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loring, maine 2019 #758320 12/06/18 3:26 am
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kevin roberts Offline OP
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okay, start planning. it's here;

Quote
Loring Timing Association
15 hrs ·
2019 RACE DATES:

Maine Event - Wednesday July 10 - Sunday July 14
Due to the 75% breakage rate the 5 day event has, if we do not have 20 vehicles to run Sunday, the event will end Saturday.

Harvest Event - Thursday Aug 29 - Sunday Sept 1
As above, if we do not have 20 vehicles that can run, we will shut down Saturday.

Please plan accordingly and if you are a weekend warrior, your weekend of racing should probably start Friday.


i like that "breakage" thing. every time they try to make a five-day event, there's like nobody left at the end of day four.

they come up to me, and ask, "are you broken yet?" i say "no."

then they ask, are you going as fast as you think you can? and i say . . ."maybe . . . "

then they say, "let us know when you're broken . . ."


every day you do not take a chance is a day of your life that you will never get back.
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Re: loring, maine 2019 [Re: kevin roberts] #758341 12/06/18 12:59 pm
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I believe we're done with Maine...it's a great track but the ride is long and sooo boring...And the 650 bike did what it had to do, ....My race team partner talks about going to the ECTA one mile in Arkansas this summer , he talks about Bonneville...He talks about getting the double engine lump up to it's potential.....................


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #764602 02/05/19 6:43 pm
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i have just sent tim kelly the entry fees for july and august.

then i called up donna at the russel motel in caribou and reserved rooms, two for 6 days, and two for 5, for the two events.

then i submitted my time off request at work for all that time plus two days travel back and forth on either side, for the two events.

the warehouse is finally warming up above 35 F, so it's getting time to rebuild the race bike.

[Linked Image]


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #776809 06/19/19 1:04 am
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[Linked Image]

everything's done except for the correct sprockets, which should arrive tomorrow. i tried bouncing on the 10-3/8-inch shocks to show my lovely wife how hard the suspension was, and damned near broke my left ischium on the immovable aluminum pan. i've lost 22 pounds of fat to ride this pig, and it seems most of that came off of my over-stuffed ass. so i may go ahead and put the 11-inch shocks back on this thing just to keep from beating my brains out on the seat.

in the meantime, new tires on the girl's 2007 kawasaki:

[Linked Image]

no 130 x 16- inch rear tires are available anymore for the older ninjas with a matching front tire. so the front is a pirelli sport demon front tire, 100/90-16, and the rear tire is another pirelli sport demon front tire, this time 120/80-16 inches. 120/80-16 was the stock rear size for the previous ninjas, and the wheels were unchanged, so it should be good to go.

doing the deadman lanyard as we speak. the little ninja is a production bike, so nothing else needs to be done except taping the headlight and taking the mirrors off.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #776813 06/19/19 3:13 am
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so who's bringing what?

hmmm?


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #776831 06/19/19 10:44 am
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Still working towards getting the usual junk ready to go. Turnip is Tidy. PRT

Re: loring, maine 2019 [Re: kevin roberts] #776852 06/19/19 3:50 pm
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your stuff is never junk, and your techniques are never usual.

your hornet is not at all usual this time around, if the rumors are correct.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #776935 06/20/19 12:32 pm
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" the little ninja is a production bike, so nothing else needs to be done except taping the headlight and taking the mirrors off."

Not so fast! The rule book does not exempt production bikes from meeting all the safety requirements, unless it just changed. So axle nuts must be lock wired, battery hold down must be metal, and unvalved fuel lines must be fire-safed, etc. By the way, I still have that fire-safe shielding you gave me a couple of years ago so I'll bring it along if you (or anyone else) needs it.

Tom


Life's uncertain - go fast now!
Re: loring, maine 2019 [Re: kevin roberts] #776938 06/20/19 1:30 pm
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A test of a 2011 Ninja 250 in Cycle World claimed and instrumented top speed of 92 MPH...Are your daughters' going to run it?


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #776946 06/20/19 3:51 pm
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[Linked Image] [Linked Image]

i could only get 88 mph on the old plugs.i have a jetting kit to richen the pilots, needle position, and mains, but i think i'm out of time.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: koncretekid] #776947 06/20/19 3:54 pm
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Originally Posted by koncretekid
" the little ninja is a production bike, so nothing else needs to be done except taping the headlight and taking the mirrors off."

Not so fast! The rule book does not exempt production bikes from meeting all the safety requirements, unless it just changed. So axle nuts must be lock wired, battery hold down must be metal, and unvalved fuel lines must be fire-safed, etc. By the way, I still have that fire-safe shielding you gave me a couple of years ago so I'll bring it along if you (or anyone else) needs it.

Tom


shoot, i forgot the battery and the fuel line covers. both axles already have steel cotter pins. but it has an unvalved tank overflow/vent line.

and i have to remove the rear footpegs.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #776987 06/21/19 12:31 pm
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I just noticed that although the Production 250/4 record in the 1-1/2 mile is 107.xxx, there is no 1 mile record, so any speed will set the record. Let the girls know they don't need to set the final record on the 1st pass, so they can get used to the side winds which are sometimes present at Loring, especially between the 1 and the 1-1/2 mile traps.

Furthermore, there is no Production 350 record, and Loring generally allows bumping up to the next class, so maybe a couple of records are available. Good luck to them.

Tom

Last edited by koncretekid; 06/21/19 8:14 pm.

Life's uncertain - go fast now!
Re: loring, maine 2019 [Re: kevin roberts] #777015 06/21/19 11:20 pm
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no [***]

they'll like that


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778426 07/12/19 1:03 am
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oops

blew up my motor. damage still be assessed, but the cases are cracked open from the bottom front case bolt all the way to the jugs.

dunno whether ill have time to put another together by the end of august.

but my number one daughter worked her way up to 102 mph in the mile, and 103 in the mile and a half.

she's bouncing off the rev limiter in top gear now at 14500 rpm.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778435 07/12/19 4:13 am
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Sorry about your motor. Hope you can salvage something.


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Re: loring, maine 2019 [Re: kevin roberts] #778451 07/12/19 9:43 am
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You're OK, I trust?
Events like that will generally not leave a lot of usable parts.

Re: loring, maine 2019 [Re: kevin roberts] #778453 07/12/19 10:45 am
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im fine

spent some time going up the side track working in the rings, then went out and did an easy run. kept it at 5000 rpm through the mile then opened it up. 95 at the mile, 126 at the mile and a half.

went backand solved a grit ptoblem in a fuel line and then lined up again. opened it up from the start and went through the mile lights at 131. the the bike began to lose power-- no noises-- so i cut the throttle. a second or two later there was a bang and i pulled the clutch and coasted in to the firetruck.

left rod end is protruding through the cases without a cap. gearbox and primary seem okay. no idea about the cams. obviously there was a seizure of som3thing, but ill have to take it apart to see what.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778456 07/12/19 11:35 am
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what make of rod?


beerchug
Re: loring, maine 2019 [Re: Allan Gill] #778458 07/12/19 12:04 pm
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MAP

the rod broke after the motor tightened up.

lubrication issue, im pretty sure


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778459 07/12/19 12:14 pm
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Kevin do you run an oil pressure gauge? It sounds like it ran out of oil in the crank. If it was wide open and running on both and started to slow and lose power, it may have been the bearing in the offending rod grabbing. If it just let go it wouldn't lose power or start to slow first, just go bang, or start to knock then bang. The thing is probably pretty loud to hear slight noises.


My son's 750 A65 has an oil tank I made, and if it isn't pretty full and you accelerate hard enough the oil surges away from the pickup point, it did this to me a few weeks ago and I was gassing it and it started to slow like having a brake on, I backed off saw the gage reading zero and stopped. Let it idle till the pressure came back. Crank and rods were ok and I just put a new set of shells in it. And welded a plate in the tank to trap the oil near the pickup which seems to work.


Great riding from your daughter. Are you allowed to change gearing on the 250?


mark
Re: loring, maine 2019 [Re: kevin roberts] #778460 07/12/19 12:36 pm
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Kevin sent me a text yesterday with a photo of the carnage.. If it's ok I'll post it......From his description over the phone it does sound like a bearing spun ,got red hot, welded itself to the crank and tore off the rod cap...MAP steel rods have an excellent reputation so a rod failure by itself is not likely..Oil pressure gauges are nice to check before the run, but at 130 plus MPH on these old lumps, with your helmet pushed into upper fork yoke,vision blurred by vibration,seeing the gauge isn't an option ...


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #778461 07/12/19 12:40 pm
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OUCH...


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Re: loring, maine 2019 [Re: Hillbilly bike] #778462 07/12/19 12:59 pm
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Hill Billy, yea I wouldn't expect it to have an oil gauge, I'd have one and a shift light rather than a tach. I was looking at his oil tank in the photo a couple of days ago wondering how that shape worked under hard acceleration seeing what I'd just been dealing with. Plus it seemed fine on his easy run compared to the blow up run when he ' opened it up from the start' if that's first gear, that's the greatest G force available to move the oil in the tank, once it cavitates the pump it will not pick it up any time soon. It's worth being sure that's not the cause, otherwise it could happen again.


mark
Re: loring, maine 2019 [Re: kevin roberts] #778464 07/12/19 1:10 pm
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Mark, last year Kevin ran probably a dozen flat out runs with the same set up....


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #778465 07/12/19 1:11 pm
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Kevin there are a few brands that do 130/ 90 x 16 rear tyres which would gear the 250 up a bit if you are stuck with the stock gearing.


Hillbilly I know Kevin has run it before, but more Gs with the take off and less oil level in the tank is what gave us a problem, and if another cause doesn't become apparent it's worth considering. Obviously there are other things that may have caused it.

Last edited by Mark Parker; 07/12/19 1:27 pm.

mark
Re: loring, maine 2019 [Re: kevin roberts] #778467 07/12/19 1:29 pm
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You don't have duct tape in the tool box????


laughing


Never underestimate the human ability to elevate stupid to a whole new level!.
Re: loring, maine 2019 [Re: kevin roberts] #778470 07/12/19 2:36 pm
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lol

[Linked Image]

[Linked Image]

[Linked Image]


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778471 07/12/19 2:48 pm
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the MAP rod itself didnt break. clearly the final straw was the cap coming adrift, but what led to it is still up for question.

ARP bolts, torqued to 0.0045. but these were the same bolts i started with some 70 runs ago. perhaps i exceeded their design expectations by not throwing them away earlier.

or if it spun a rod bearing and welded the big end up, it could have been that that tore the cap off.

other tom looked at it and suggezted seeing whether there were threads left in the rod from the bolts. that would provide some useful information.

Last edited by kevin roberts; 07/12/19 3:00 pm.

every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778473 07/12/19 2:59 pm
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Well, that brings back some bad memories.


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Re: loring, maine 2019 [Re: kevin roberts] #778474 07/12/19 3:11 pm
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[Linked Image]


but in the meantime the number one daughter did great

ill catch up here in a bit. we re eating breakfast. rain outside so we ll be going to the course to see if pushrod tom is there


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: Mark Parker] #778478 07/12/19 3:38 pm
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Originally Posted by Mark Parker

Great riding from your daughter. Are you allowed to change gearing on the 250?



no oil pressure gauge, mark. but there will be one from now on. there was no knocking from the bottom end at any time before it let go.

ill see about a smaller sprocket on the little ninja. if the girl can reach the rev limiter on a flat then clearly theres a bit of torque still available. ill put in the jetting kit too, one size bigger pilots, mains, and a shim under the needle.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778504 07/12/19 10:28 pm
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managed to save the rod cap, anyway

[Linked Image]

[Linked Image]


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778507 07/12/19 11:02 pm
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the fire down below


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #778508 07/12/19 11:10 pm
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It doesn't look like the rod was hot.


mark
Re: loring, maine 2019 [Re: kevin roberts] #778512 07/13/19 12:17 am
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Stinking rotten luck Kevin, i know exactly how you feel but it's all part of the game.

I know you don't want to hear suggestions from idiots like me at this time but a simple mod
i did was to just use a 20lb oil pressure switch which operated a relay that shut off the ignition.
A small button on the handlebars allowed it to be over-ridden when starting.
I know you run a mag but a tiny 9v battery would be enough to operate the relay, the contacts
of which could be wired across the points.
I drove to Phillip Island the first time i raced (or actually didn't race) there and blew up on the
first lap of the race. It was a long 1800km drive back home..........
At least the mod may help minimise the damage.

Re: loring, maine 2019 [Re: kevin roberts] #778519 07/13/19 2:17 am
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nick, thanks for the suggestion. that seems like a better solution than an oil gauge i can't see, or maybe an additional safeguard if i put the oil gauge in anyway.. wouldn't be hard to plumb it into the ARD cover, which has a port for the oil pressure sender. it would be easy to use a relay to ground the magneto.

but here's another piece of the puzzle.

the first run i came back to the line with the bike misfiring. looked down and the left carb was leaking from a dirty float bowl seat, a lot, dripping out the bellmouth. took it back to the pits and cleaned the seat, blew out some mung from the inlet, and then tested the fuel flow. no flow. why no fuel flow.

i looked and the left tank was empty. i had used up 2.5 litres of fuel in one run and the return road because the carb was overflowing.

fixed the inlet problem, re-filled the tank, and went out and idled a good long while, then ran and blew up.

i'm wondering whether the leaking fuel either scoured the left cylinder, diluted the oil, or maybe even hydraulically-locked the motor at TDC once on the first run, and then the weakened motor blew on the second.

so i opened up the sump and drained out a tablespoon of remaining oil. no fuel in the sump, no smell of fuel in the oil tank or the stuff on the sump.

dunno. got to open it up and look.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: Mark Parker] #778539 07/13/19 9:54 am
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Originally Posted by Mark Parker
It doesn't look like the rod was hot.


A hillbillyism meaning it went to hell,it's all f****dup...

Last edited by Allan Gill; 07/13/19 4:47 pm. Reason: Edit for the swear... it’s a family site sorry.

79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #778542 07/13/19 10:34 am
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Kevin does have a Lowbrow round tank mounted crosswise in the frame, so oil starvation may be less of a problem than stock tank? Also, accelerating from the mile to the mile-and-a-half would not be severe. Never-the-less, it could be loss of oil pressure.

Kevin didn't mention it, but bits of aluminum specs on his spark plug, so maybe another clue.

Tom

P.S. Not to take away from Kevin's disaster, but I came home early after the Bridgestone went 114.5 mph but started slowing down - - losing spark I think, so not serious.

Last edited by koncretekid; 07/13/19 10:47 am.

Life's uncertain - go fast now!
Re: loring, maine 2019 [Re: kevin roberts] #778543 07/13/19 10:48 am
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The rod shows no sign of heat from a seizure. If you lost oil pressure the rod would be discolored from the heat.

Re: loring, maine 2019 [Re: kevin roberts] #778546 07/13/19 12:17 pm
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nope. the rod shows no signs of heat.

i'm thinking i should have just changed out the rod bolts. the rod end stcking out of the motor still has half a bolt in it.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778547 07/13/19 12:37 pm
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Originally Posted by kevin roberts
nope. the rod shows no signs of heat.

maybe i should have just changed out the rod bolts. the rod end stcking out of the motor still has half a bolt in it.

Do you really think a 3/8 ARP rod bolt wll fail in about 100 miles of full throttle use considering the rpm and HP of the engine?.


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #778552 07/13/19 3:02 pm
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no, thats why i didnt change them.

but if i had changed them, i wouldnt be wondering now.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778553 07/13/19 3:06 pm
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pushrod tom and mike are here and just ran tbe turbo BSA. 142 in tbe mile, then 94 in the mile and a half.

dont know yet why they slowed down.

tbe number two dsughter juzt ran 99in the mile and a half

Last edited by kevin roberts; 07/14/19 12:18 am.

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Re: loring, maine 2019 [Re: Hillbilly bike] #778563 07/13/19 5:06 pm
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Originally Posted by Hillbilly bike
Originally Posted by kevin roberts
nope. the rod shows no signs of heat.

maybe i should have just changed out the rod bolts. the rod end stcking out of the motor still has half a bolt in it.

Do you really think a 3/8 ARP rod bolt wll fail in about 100 miles of full throttle use considering the rpm and HP of the engine?.


It depends (I’m no metalogist) but if your original use set the rod bolt at a certain elastic point, then through stress and heat cycles that amount of stretch becomes its new unstrech point (plastic point) then you stretch the bolt again then you would have doubled the original stretch of the bolt. If you blue printed the original engine the you could have calculated if the bolts needed changing or not.

Maybe I’m talking out of my ass, all the rods I’ve fitted have been to a torque setting, not a stretch value, so I’ve never measured them. Perhaps I aught to, but I’d have certainly looked at it in that way had it been my own build.

Had the problem been detonation, running lean, then I would have expected the rod to break nearer to the pin.

Had there been fuel in the oil it would have hummed something chronic in the oil tank, the fuel would also have worsened the break point of the oil, not only thinning its viscosity but also reducing its ability to reform its
Molecules properly.

A tear down will give you more info hopefully and maybe the pump just crapped out.


beerchug
Re: loring, maine 2019 [Re: kevin roberts] #778565 07/13/19 5:52 pm
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Originally Posted by kevin roberts
no, thats why i didnt change them.

but if i had changed them, i wouldnt be wondering now.



Seeing lots of broken rods from V8 car racers,It's not all that uncommon for the rod bolts to shear and the cap ripped off during high rpm failures..The forged steel H beam rod is very strong so the bolts may be the weak link... Send a photo to Marino at MAP, he might be interested..


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: koncretekid] #778586 07/14/19 12:17 am
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Originally Posted by koncretekid

P.S. Not to take away from Kevin's disaster, but I came home early after the Bridgestone went 114.5 mph but started slowing down - - losing spark I think, so not serious.



and you did put a fairing on it after all and it looks beautiful. i didn't have time to take pictures.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: Hillbilly bike] #778587 07/14/19 12:28 am
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Originally Posted by Hillbilly bike
Originally Posted by kevin roberts
no, thats why i didnt change them.

but if i had changed them, i wouldnt be wondering now.



Seeing lots of broken rods from V8 car racers,It's not all that uncommon for the rod bolts to shear and the cap ripped off during high rpm failures..The forged steel H beam rod is very strong so the bolts may be the weak link... Send a photo to Marino at MAP, he might be interested..



marino is retiring. or trying to. but i'll send pictures anyway. he knows more than me about it. no matter what, the ARP bolts will get thrown away every tear down from now on.

in the meantime i'm trying to assess whether i can build a motor in one hour per evening in six weeks. i'm assuming that nothing inside is salvageable, so i'll need crank, rods, pistons, cams, maybe lifters and tappet blocks, jugs and i dunno about the head yet.

i have a stock crank and cases sitting in the shop. the gearbox, primary, and timing side on the blown motor appear to be fine. if i give up on high compression, i can use MAP's 10.5 to 1 piston kits and won't have to wait on piston machining and a lot of hand work.

then i'll have to tune the new assembly from scratch. but maybe i can do it.


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Re: loring, maine 2019 [Re: kevin roberts] #778589 07/14/19 12:34 am
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but in the meantime, both the girls did 101 in the mile and one did 103 in the mile and a half on the little kawasaki.

sensational. they were a big hit at the track, too.

[Linked Image]



every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778592 07/14/19 12:46 am
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If someone's taking bets.......... the crank's ok so my money is on piston seizure drive side.

Re: loring, maine 2019 [Re: kevin roberts] #778593 07/14/19 12:59 am
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So, Kevin, Looks like the 'Battle of the Twins' will have to be rescheduled. Hopefully next year. I got lots of work to do X2. Maybe a head gasket on the turbo. Mike coasted through the mile at 142 but by babying it made it back to the pits under power........mostly. Despite that we still had fun. Cheers, PRT

Re: loring, maine 2019 [Re: pushrod tom] #778595 07/14/19 1:08 am
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get that hornet out.

i want to see what youve done.


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Re: loring, maine 2019 [Re: kevin roberts] #778618 07/14/19 10:29 am
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Originally Posted by kevin roberts
but in the meantime, both the girls did 101 in the mile and one did 103 in the mile and a half on the little kawasaki.

sensational. they were a big hit at the track, too.



Bragging rights - - the boys won't have anything on them!


Life's uncertain - go fast now!
Re: loring, maine 2019 [Re: koncretekid] #778620 07/14/19 10:45 am
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Originally Posted by koncretekid
Originally Posted by kevin roberts
but in the meantime, both the girls did 101 in the mile and one did 103 in the mile and a half on the little kawasaki.

sensational. they were a big hit at the track, too.



Bragging rights - - the boys won't have anything on them!


Great!

Kevin, when you have a chance, please tell us again what bikes "the girls" are running and how they performed, have they run in competion before, their riding experience would be interesting to hear.

Thanks,


Kurt

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Re: loring, maine 2019 [Re: kurt fischer] #778622 07/14/19 11:52 am
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kurt, theyre both running the same machine, a 2007 ninja 250 in the pure production class-- completely stock. both have had DOT rider training courses, and both have a couple of hours on a dirt bike.

the 18 year old has never ridden a bike on the street before, and the 20-year old has taken the kawasaki out on the public road about twice. i took them out to a local airstrip to let them get up to 30 mph or so to see what its like, and they took themselves to a local parking lot to practice once before we left, because the younger had never ridden the ninja. but they both spent the first day on loring's test track going up and down, so they were more or less comfortable when they started racing.

neither has any experience at competition. this was the first time. everybody was helpful.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #778627 07/14/19 1:47 pm
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Originally Posted by kevin roberts
kurt, theyre both running the same machine, a 2007 ninja 250 in the pure production class-- completely stock. both have had DOT rider training courses, and both have a couple of hours on a dirt bike.

the 18 year old has never ridden a bike on the street before, and the 20-year old has taken the kawasaki out on the public road about twice. i took them out to a local airstrip to let them get up to 30 mph or so to see what its like, and they took themselves to a local parking lot to practice once before we left, because the younger had never ridden the ninja. but they both spent the first day on loring's test track going up and down, so they were more or less comfortable when they started racing.

neither has any experience at competition. this was the first time. everybody was helpful.


Sensational!


Kurt

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Re: loring, maine 2019 [Re: kurt fischer] #778636 07/14/19 5:21 pm
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That's some great speed runs by the young ladies...Probably faster than most of the old Brit stuff on this site...And they have the paper to prove it thumbsup


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: Allan Gill] #778681 07/15/19 2:00 am
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Originally Posted by Allan Gill
Originally Posted by Hillbilly bike
Originally Posted by kevin roberts
nope. the rod shows no signs of heat.

maybe i should have just changed out the rod bolts. the rod end stcking out of the motor still has half a bolt in it.

Do you really think a 3/8 ARP rod bolt wll fail in about 100 miles of full throttle use considering the rpm and HP of the engine?.


It depends (I’m no metalogist) but if your original use set the rod bolt at a certain elastic point, then through stress and heat cycles that amount of stretch becomes its new unstrech point (plastic point) then you stretch the bolt again then you would have doubled the original stretch of the bolt. If you blue printed the original engine the you could have calculated if the bolts needed changing or not.

Maybe I’m talking out of my ass, all the rods I’ve fitted have been to a torque setting, not a stretch value, so I’ve never measured them. Perhaps I aught to, but I’d have certainly looked at it in that way had it been my own build.

Had the problem been detonation, running lean, then I would have expected the rod to break nearer to the pin.

Had there been fuel in the oil it would have hummed something chronic in the oil tank, the fuel would also have worsened the break point of the oil, not only thinning its viscosity but also reducing its ability to reform its
Molecules properly.

A tear down will give you more info hopefully and maybe the pump just crapped out.


allan, youre right about rod ztretch over time. the idea behind the stretch gauge is to stretch the bolt within its elastic region so that normal loads during running (at TDC) keep sufficient tension on the bolt, neither too much nor too little.

as i understand it.

but over time the bolt unavoidably stretches and ARP specifies a limjt beyond which the bolt must be tossed. ive tried measuring the bolts with a micrometer with flat anvils and its hard to get the same number twice. lazt teardown they were well within specs, as near as i could determine, but this timevi 5hrew up my hands and stretched them again. no longer.

a helpful suggeztion from a brit at loring was to uze a thread measuring micrometer with pointy anvils. but throwing them away might be cheaper.


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Re: loring, maine 2019 [Re: kevin roberts] #778701 07/15/19 10:30 am
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Think about that 3/8 rod bolt on the MAP rod....Although not exactly a fair comparison, Chevy V8 rods use a 3/8 bolt in a much heavier rod and piston assembly with individual cylinders making twice as much power at similar RPM as a Triumph and it's very rare for the bolt to fail.... uness the bolt was defective or you grossly over torqued it, I don't believe you did, the fault must be elsewhere, like an event that suddenly grossly overloaded the rod and snapped off the cap..


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #778702 07/15/19 10:57 am
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2 cents worth.....Seems there were some events on the failed side before the failure.Wonder if they're all tied together?
On ARP bolts- I have the same rods in my race bike. I followed all the installation instructions, torqued to spec, and also measured. As I recall all 4 bolts stretched to different lengths. One didn't stretch at all at the specified torque. Called ARP asking what is it? Torque or stretch? They told me to just torque them. 2 1/2 seasons on, all is good.
Had another motor self destruct I suspect because a re-used stock rod bolt that had been overstretched in a previous life.
I won't reuse rod bolts anymore.
Maybe this is a sign for you to come racing with me. We could find a place for the girl's Ninja too.

Re: loring, maine 2019 [Re: kevin roberts] #778703 07/15/19 11:01 am
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I do them by torque, gave up trying to measure with a normal flat ended micrometer. A friend of mine builds race engines and I asked him about measuring stretch, (he often uses similar type rods,) he said he does them to torque.


The alloy rods in my 883 with Norton crank have bigger bolts than the lighter MAP A65 steel rods and torque to 50/55ftlb into the alloy cap. They didn't come with bolt stretch instructions, just torque settings.

MAP say torqueing by stretch for their rods is a better method, but looking up what that type of mic looks like shows it with a really easily read dial indicator with pointy ends to fit into the bolt.


Kevin you may get an idea of exactly what caused it when you pull it down. See if both bolts sheared and where the ends are in the rod.


mark
Re: loring, maine 2019 [Re: Mike Baker] #778714 07/15/19 2:19 pm
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[quote=Mike Baker]I followed all the installation instructions, torqued to spec, and also measured. As I recall all 4 bolts stretched to different lengths. One didn't stretch at all at the specified torque. Called ARP asking what is it? Torque or stretch? They told me to just torque them./quote]


Interesting that, not all bolts are equal! be interesting to know what the achieved torque was for it to get to the desired stretch, whilst the bolt might still be fine, the other end where its threaded into might not. That might have been the fail point and not the bolts!!

I have been fitting thunder rods since 2013, im on my 3 (and a half) sets with different engines, the latest batch are using a brand different to ARP, not sure who from memory but will look again when I get the motor back.


beerchug
Re: loring, maine 2019 [Re: Mike Baker] #778718 07/15/19 4:07 pm
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Originally Posted by Mike Baker
Maybe this is a sign for you to come racing with me. We could find a place for the girl's Ninja too.


I am trying to get Kevin to bring the clan to a race with me, where he can see the mortal remains of a 450 Honda or similar after the axle breaks off the crank at 13,000 RPM. Or the rod breaks...it ain't pretty


eek

laughing


Never underestimate the human ability to elevate stupid to a whole new level!.
Re: loring, maine 2019 [Re: kevin roberts] #778721 07/15/19 5:15 pm
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from LTA's FB page:
[Linked Image]

I heard tell something about "riding a slow bike fast" ...

Here's one near me, $1000 obro:
http://www.nestreetriders.com/forum/f14/kawasaki-ex250-92559.html?s=ef4975c0d10fa6967deb42063ea862e0


Kurt

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Re: loring, maine 2019 [Re: kurt fischer] #778723 07/15/19 5:19 pm
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Originally Posted by kurt fischer


I heard tell something about "riding a slow bike fast" ...


Typical stock 650 Brit twin should fit that description...LOL


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: Hillbilly bike] #778725 07/15/19 5:23 pm
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Originally Posted by Hillbilly bike
Originally Posted by kurt fischer


I heard tell something about "riding a slow bike fast" ...


Typical stock 650 Brit twin should fit that description...LOL


When it come to my vintage Brit bikes, it's a matter of riding a slow bike ... slow.
#irideslow


Kurt

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Re: loring, maine 2019 [Re: kevin roberts] #779057 07/18/19 6:31 pm
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BTW, LTA have posted lots more pics on their FB page, including several more of the Ninja 250, PRT's BSA, a Norton, and a triple. I can copy and re-post for FB boycotters if there's any interest

Didn't see any of kevin's blown (and I don't mean supercharged) Triumph..


Kurt

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Re: loring, maine 2019 [Re: kevin roberts] #779077 07/18/19 10:07 pm
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what a trip that was.

i hated to blow up, but it meant i could ignore my own program and focus on getting my daughters into the hot box with nothing hanging off or missing.

the number-one girl will be the first name in the first class in the record book: OHC, P/P, 250/4. right on the very top.

i'm going back in august, hopefully with the triumph, but if not, i'll run something else. the old morgo, or tony's buell. the number two son was really helpful on this trip, and deserves a chance to shine all by himself. if he tops his sister's speed, she'll be pissed at him forever. he might do it, too, because i just bought a 43-tooth sprocket to replace the 45, and maybe that will keep the rev limiter far enough away to go a little faster. if the wind is right.

it's all in being there, in just doing it. there was a 10 to 15 mph tailwind all day, after i was broken. i was crying, but i'll be back, and so will the wind, eventually. you have to buy a ticket to play the game.

the BSA triple is up to 148 mph now. i didn't keep track of the professor's nortons, but he bypassed the speed limiter on his MV Augusta and got to 189. that is a beautiful bike that he got for $5000, saving something like ten grand.

the steam bike was there, some mad max contraption with a 1905 stanley steamer power unit somewhere under the fairing. went 80-something, i think. it was the one that broke the record at maxton that had stood for 90 years or so. had trouble stopping because the rider has two levers on the handlebars that are actually throttles, and forgot what they were. so when he squeezed them to stop he just went faster. oops.


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Re: loring, maine 2019 [Re: kevin roberts] #782901 08/28/19 8:18 pm
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well, the over-long cam bearings prevented me from bringing the triumph back to maine. it's sitting on the bench with the degree wheel on the crank. that close.

but i'm here in maine for the august meet, with the 1200cc buell. 1078 miles since yesterday morning. got here about two in the afternoon.

anybody else going to be here?


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Re: loring, maine 2019 [Re: kevin roberts] #782928 08/28/19 11:01 pm
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Did you bring chief mate Starbuck and the Ninja 250?


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Re: loring, maine 2019 [Re: kevin roberts] #782935 08/29/19 12:02 am
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no, sadly.

starbuck and both the girls have just started school, and i won't race the ninja on the (very unlikely) chance that i would take the P/P 250/4 record away from my daughter, at 103 mph. i'm trying to get them all back at the next event, and maybe get the number one son to set aside his education and come out as well.

they don't even have a class listed for P/P 100/4, so if i bring the little 1971 honda CL/100 scrambler pit bike, it would set a record if i pushed it. it goes 30 or 40 mph, i think.


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Re: loring, maine 2019 [Re: kevin roberts] #782937 08/29/19 12:22 am
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We need to get those girls to a circle track race, run almost every weekend within a few hours of home.....


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Re: loring, maine 2019 [Re: Rich B] #782977 08/29/19 10:45 am
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Originally Posted by Rich B
We need to get those girls to a circle track race, run almost every weekend within a few hours of home.....


You could tell them about Shayna Texter
https://shaynatexter.com/


Kurt

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Re: loring, maine 2019 [Re: kurt fischer] #782990 08/29/19 1:33 pm
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Yes I could. Shayna is a great story. And there are a few other young ladies working their way through the ranks.

I was at the Amateur Nationals a month or so ago talking to a friend who has been around flat track as long as I have. We were talking about in our misspent youth seeing a lady racer was a big deal. Now, it seems common.

There are lots of fast young ladies that go fast and turn left....


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Re: loring, maine 2019 [Re: kevin roberts] #783031 08/30/19 12:53 am
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i'd love to. i've never seen any kind of oval or circle track event.

maybe i can figure something out


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Re: loring, maine 2019 [Re: kevin roberts] #783033 08/30/19 12:56 am
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rain the first day.

no runs.

got through safety with only a minor glitch. in the rule book, you don't have to have a steering damper until the class record passes 150mph. but in the old rules, the limit was 125. since i'm working in the 135 mph range, there was some question about my lack of a damper until we compared rule books and saw the update.

but then it was wet all day

[Linked Image from i.imgur.com]

supposed to be better tomorrow

this buell is not as comfortable as the T120. on that bike i use the passenger peg mounts, so there is room to stretch out a bit. on this sport bike chassis, i'm squeezed up pretty tight. hard to get a good tuck when i,m curled up that way.

Last edited by kevin roberts; 08/30/19 12:58 am.

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Re: loring, maine 2019 [Re: kevin roberts] #783058 08/30/19 11:11 am
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Pretty small crowd. Hope you get some more people there.
Holidays can be a tough time to hold a race event. This year was the third time I raced New Jersey. Memorial Day weekend. Compared to the previous 2 non holiday races there, there were significantly fewer participants.

Re: loring, maine 2019 [Re: kevin roberts] #783059 08/30/19 11:59 am
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Kevin, I predict 139 mph, do not not disappoint,lol..


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: Mike Baker] #783060 08/30/19 12:05 pm
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i believe theyve had 40 registrants.

theres never very many. they limit it to 80 at tbe main event in july. it means you can run without long waits.

at ECTA in ohio i would run, and then get in line behind 150 people. id wait around two hours, pushing the machine up and working on it in the line.

at bonneville speed week you can wait from 0730 until 1530 to run one time, and thats it for the day.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: Hillbilly bike] #783061 08/30/19 12:18 pm
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Originally Posted by Hillbilly bike
Kevin, I predict 139 mph, do not not disappoint,lol..



air density is 105 percent. ive seen 108 here before. 7 mph crosswind.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #783099 08/30/19 11:22 pm
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more people showed up for friday:

[Linked Image from i.imgur.com]

and i got five runs today.

changed the plugs in the buell and went on out. RAD was about 105, temperature was 60.5 F, 3 mph tailwind that changed to a gusty crosswind as the day went on.

the firest run showed me immediately that the 30-tooth pulley was too big. the bike accelerated well but wouldn't pull to redline in 4th gear (there are five). so the first run i went through the lights in fourth at 123/126. then a back up run using the top gear gave me 128/129. not very good. so i went back to the pits and changed out the front pulley. it's super easy on this machine, because you don't have a clutch in the way

[Linked Image from i.imgur.com]

i have three-- a 26, 28, and the 30. so i took the 30 out and put the 28 in

[Linked Image from i.imgur.com]

the next two runs were an immediate improvement, at 130/132. so i said, well, maybe i can do a bit better, so i upped the man jet two sizes from 160 to 170.

127/128.

no dice. as usual, tony's tuning was spot on. so i put the leaner jet back in and set up for the morning. this event has been very slow for some reason. only 5 runs on days when i usually can get 10. but then again, i'm pretty laid back about this event. tomorrow we're supposed to have a tail wind, and i'll see what i can do with that before i take the muffler offand mess with the jetting again.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #783101 08/30/19 11:26 pm
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and kyle malenky showed up and did 136 on his altered unit 650:

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

beautiful bike, and fast. 131 in the mile i think, and then 136 in the mile point five.

[Linked Image from i.imgur.com]

he runs in a different class than i do, so my records still stand, but his machine is now the fastest non-boosted british 650 on gasoline.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #783102 08/30/19 11:32 pm
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Speeds are interesting, The Buell has about 20 more HP that your race Triumph and a lot more torque...So it shows how much the air drag on an open frame bike is reduced by lowering, removing parts and riders position..
Is the engine below 6700 rpm?
The Buell should be a smoothie at 130 mph


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #783103 08/30/19 11:32 pm
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and there's lots of other interesting things running

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

and british cycle supply is right there with whatever you need.

[Linked Image from i.imgur.com]



every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: Hillbilly bike] #783107 08/31/19 12:54 am
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Originally Posted by Hillbilly bike
Speeds are interesting, The Buell has about 20 more HP that your race Triumph and a lot more torque...So it shows how much the air drag on an open frame bike is reduced by lowering, removing parts and riders position..
Is the engine below 6700 rpm?
The Buell should be a smoothie at 130 mph


it's certainly air drag. the buell's stock bars put my elbows way out in the wind, and i can't get my head down. it sits right there more or less on top of the tank. plus the stock pegs are way forward for doing this stuff.

on the triumph my head is behind the triple tree, my elbows are right into my sides, and my feet are about 12 inches farther back. running the triumph over 130 mph is not tiring at all-- the riding position puts me in line with the wind. on the buell at the same speed i'm hanging on for dear life trying to get my arms in close to my body and banging my helmet into stuff trying to get it down to the side. plus that flat aluminum plate i sit on on the triumph is way more comfortable than the buell padded seat. my butt is beat to death on the buell after each run.

with the 28 tooth pulley i forgot to look at the tach to see where i was, and i haven't done the math to be able to calculate it on gear ratios and tire circumference. i'll watch the tach tomorrow in the morning. the rev limiter cuts in at an indicated 6900.

to make the buell faster, it needs clip ons to get my hands in, rear sets to put my feet way back, lowering, and then stripping stuff off like turn signals and headlights, and fender extensions, and so on. it could be done. i'm at 130/132 on a street-legal bike with lights and a license plate, and the records are only 133/135. this particular machine has the motor to be comepetitive. all it needs is some severe treatment in aerodynamics.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #783141 08/31/19 10:25 am
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I'm pretty sure there's a soft limiter that comes on at 6700 rpm...I used to sense it as a slight dip in the acceleration....The Jetting I chose for the HSR Mikuni was recomended by the Bad Weather Bikers" Buell website...but on the lean side..
.
I talked to my ride a few days ago and he is all for Bonneville next year, the later all bike met, not Speed Week...Of course that means he wants to ride a bike and have nothing to do with prep work,lol...


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #783144 08/31/19 11:00 am
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Thanks for the reports K. That Malinky bike is cool! And he didn't have to get it all salty. PRT

Re: loring, maine 2019 [Re: kevin roberts] #783146 08/31/19 12:30 pm
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The Malinkys are serious about building fast Triumphs and deserve the credit. I met them at "World of Speed" two years ago with Alp, of course. I believe that Kyle was having bachelor party at Speed Weeks this year, so I presume that is his new wife in your photo.

His brother Tyler crashed and broke his arm at Speed Weeks at something like 127 mph when he hit rutted up salt churned up by the cars and went into a speed wobble. As I looked at the run logs from Speed Weeks on the SCTA website, I noticed that very few vehicles actually got thru the 2nd mile.

I'm heading to "World of Speed" in September with both the APS-PG 600cc BSA and the M-PG 250cc Triumph. By-the-way, Kyle's new record is still not the fastest normally aspirated 650cc pushrod bike on gasoline, unless you don't count my partial streamliner - - just saying!

Tom


Life's uncertain - go fast now!
Re: loring, maine 2019 [Re: koncretekid] #783186 08/31/19 11:24 pm
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Sometimes ya just gotta keep things straight! Best of luck out there OT!! PRT

PS Workin to get my junk back together and ready for some speed at next years meet.

Re: loring, maine 2019 [Re: koncretekid] #783188 09/01/19 1:01 am
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Originally Posted by koncretekid

By-the-way, Kyle's new record is still not the fastest normally aspirated 650cc pushrod bike on gasoline, unless you don't count my partial streamliner - - just saying!

Tom


that thing of yours is faster than everybody. i still don't know where you get the horsepower to do that.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #783190 09/01/19 2:01 am
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there weren't no tail wind. cross wind, hard, all day. sometimes a head wind.

i just could not get the buell to match the speeds from the day before. i put the 160 main jet back in the morning, and didn't go fast. all day i tried different jets, air filter on, air filter off, different riding positions, drained the fuel and tried a fresh can, took out the new plugs and put in newer plugs. unhooked the electric vacuum advance switch and plugged the manifold port. the bike went slower and slower, by the 11th run at the end of the day the machine would accelerate hard up to around 100 mph, then taper off at around 118. it will pull to redline happily in lower gears, and will do 6900 in fourth by about the mile, at 117 where yesterday it was doing 130. wouldn't pull to redline in top, stopped at about 5900.

it doesn't misfire, it has clean carburation. just does not have speed above 118 today. the petcocks appear to flow a lot of fuel. maybe there's a restriction in the fuel line to the carb. i didn't take it off to blow out. was going to check the timing to see whether it had slipped but ran out of time. some of the mile point five speeds are slower than the mile, which points to fuel.

went up to the starter at the end of the day and told her, this is my last run. took off, and then before the mile the bike faltered . . .

holy [***], i thought, i've fucked another motor. it died, then caught, and i throttled down and took the short exit and the bike died. oh no.

it would turn with the starter, but wouldn't run. then it began to catch, so i said at least there's some sort of ignition. but it would it just start and die.

then i looked down on the left, and saw that the ignition key had vibrated to the off position.

turned it on, and the bike fired right up. went to the line and the starter said, couldn't resist, huh?

so i did one more 117/118 and called it quits.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #783211 09/01/19 10:35 am
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I'd go over the ignition system very carefully. Your symptoms sound exactly what happens when my batteries start to fail, but I run total loss so with insufficient amperage available, the motor can't pull high rpm under a load. Look at the coils or replace them if you have spares, look for a bad ground , especially the frame to the motor, look closely at the fuses and the fuse holder. If you can get it started, pull at each and every wired connection. In fact, try running new grounds and new ignition wire, even bypassing the switches (which you cannot legally do on the race course, but you can on the other runway).

As far as the fuel system goes, make sure that the gas tank vent is clear. You might have to remove the fuel valve from the tank, as that can get clogged. Of course, a compression check will eliminate the possibility of something more serious.

Yesterday I took a ride on my '69 T100S which I had rebuilt 20 years ago. I resurrected it and everything seemed up to snuff. Long story short, I got about 30 miles out and it seized. All the oil had been spewed over the back of the bike due to a loose hose on the rocker box feed line. But when I got the bike home, it turned over nicely. Checked the compression and it was low on the left side. I added one quart of oil and it barely showed on the dip stick.

But I had no ignition?? Turned out the original fuse holder in which I had put a 1/4" round piece of aluminum, and added a modern fuse at the battery, was only making intermittent connection. I could wiggle it and the lights would go on and off. Just to show how a bad connection can be frustrating.

Put the plugs back in and kicked it over with the ignition off till the idiot light went off indicating at least some oil pressure, turned the ignition back on and kicked it over and it started on the first kick (shut it off immediately). I'm still into a rebuild, but maybe not as serious as I thought.


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Re: loring, maine 2019 [Re: kevin roberts] #783212 09/01/19 10:43 am
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Originally Posted by kevin roberts
Originally Posted by koncretekid

By-the-way, Kyle's new record is still not the fastest normally aspirated 650cc pushrod bike on gasoline, unless you don't count my partial streamliner - - just saying!

Tom


that thing of yours is faster than everybody. i still don't know where you get the horsepower to do that.

Some speed is in the fairing, has it been run with no fairing? ... You notice Kevin, Lowbow and mine are all clustered from 133-135....If all three lined up at the same time so weather conditions are not a factor...It might be even closer...or not...
I'm pleased that Kevin, especially because he rides the bike, and my self who both have just hillbilly mechanical skills and limited knowledge have gone this fast...


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: Hillbilly bike] #783213 09/01/19 11:53 am
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Without the fairing, 130 mph. It's not the hp, it's the aerodynamics. You guys have way more hp than I do!


Life's uncertain - go fast now!
Re: loring, maine 2019 [Re: koncretekid] #783220 09/01/19 2:48 pm
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Originally Posted by koncretekid
Without the fairing, 130 mph. It's not the hp, it's the aerodynamics. You guys have way more hp than I do!

Well, your engine makes impressive power for what it is...

As always the winds at Loring are a factor...You can start off the line with no wind and then catch a head or tail wind before the speed traps..But it's part of the game for all competitors.....


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: Hillbilly bike] #783243 09/01/19 11:41 pm
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Originally Posted by Hillbilly bike

I'm pleased that Kevin, especially because he rides the bike, and my self who both have just hillbilly mechanical skills and limited knowledge have gone this fast...


lol

its so hillbilly where i live that the possums all play banjo


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #783245 09/02/19 12:03 am
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tom, i wonder if that loose ignition switch is making the ignition part-time?

there is no indication of anything wrong mechanically. its like it runs out of fuel or out of spark. not hard to check.

hard to test tho. i aint about to see if it will do 132 again on my two-lanes.


every day you do not take a chance is a day of your life that you will never get back.
Re: loring, maine 2019 [Re: kevin roberts] #783283 09/02/19 3:44 pm
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Kevin,
I didn't mention it, but even fuses are known to work part time even though cracked. So replace or bypass that as well.
Tom


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Re: loring, maine 2019 [Re: kevin roberts] #783288 09/02/19 4:17 pm
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Bent over the fuel tank at 120 mph with the roar from the wind, engine noise and your heart pumping it's not always easy to feel a steady misfire....Oh, the Buell used to have a random misfire issue at low speeds when I first got it... I traced it to the side stand safety electrical switch...I bypassed it...Maybe it has come loose..I also believe the clutch lever interlock is bypassed....And check the coil primary wires..The gov;t didn't want riders starting the bike without the clutch pulled or riding off with the side stand down...


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: loring, maine 2019 [Re: kevin roberts] #783314 09/02/19 10:08 pm
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i have an MPS kill switch wired into the coil primary feed. i put dialectric grease into it at some point in the event because it was raining, but cant remember when. i don't like the idea of interrupting the hot wire with a switch, but the kills on the buell and the kawasaki all run all the primary current to the coils through their contacts anyway.

i'm finally home-- 780 miles yesterday, and 390 today. listening to the coyotes singing at the moment.

i'll go over all the electrics in the next few days with a meter as well. i'm certain it's something simple-- if i was wearing something out, it would have slowed down over successive runs. but friday it was fast, and saturday it was slow.

go figure.

[Linked Image from i.imgur.com]


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