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Re: mail-order LSR
[Re: kevin roberts]
#724495
02/06/18 2:34 pm
02/06/18 2:34 pm
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Joined: Oct 2012
Posts: 4,324 Running from demons in WNY
Hillbilly bike
BritBike Forum member
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BritBike Forum member
Joined: Oct 2012
Posts: 4,324
Running from demons in WNY
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Kevin, what lift figures are you using before and after maximum lift to get the lobe center? If not already, use .100 instead of .040 that you may be using?
I take off bike parts until it doesn't function, then put on just enough so it functions
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Re: mail-order LSR
[Re: kevin roberts]
#725265
02/12/18 1:26 am
02/12/18 1:26 am
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
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DOPE
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lol, are you in the district she's running in? i try to stay in the background. i did her website, but anonymously https://www.shawnarobertsforcongress2018.org/i can't get decent video of her. maybe when she talks at the quaker school this week. give me a reference to the newspaper article and i'll put it on the website. she was on television news yesterday, i think. i'm not sure, as we don't own a television set.
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: mail-order LSR
[Re: Hillbilly bike]
#725754
02/15/18 11:19 pm
02/15/18 11:19 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
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DOPE
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OP

DOPE
Joined: Dec 2013
Posts: 4,758
ohio, usa
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Kevin, what lift figures are you using before and after maximum lift to get the lobe center? If not already, use .100 instead of .040 that you may be using? okay, took it very slow and serious, and wobbled the cam nose back and forth 0.100 to either side, which was surely enough. the cam centerlines that gave me 128 mph are at 101.5 degrees for the intake, and 104 degrees for the exhaust. both advanced a bit from what i wanted by a degree or so. megacycle reccommends starting out with 103 and 105 for this cam. i'll be cranking these back to 104 and 107 before i clay them again, based on some good advice. one keyway ought to give me 104 on the intake, and another keyway on the exhaust might do 106.5. could get even closer if they're not cut accurately. who knows?
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: mail-order LSR
[Re: Mike Baker]
#725820
02/16/18 5:26 pm
02/16/18 5:26 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
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DOPE
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ohio, usa
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Those are the numbers I've gotten on my race bike, Kev. It pulls hard coming out of corners and keeps making power till I roll out of the throttle. Might be interesting to mark the camwheels at different timing numbers so you could quickly change timing at the track and just see what more torque or more top end will do for your best speed. i'd love to try that, but i may still be messing with intake and exhaust length. i was faztest with 38- inch pipes, 1 5/8 in diameter. if i change cam tiing tbat may no longer work. ditto carbs, right now theyre on the shortest stubs i have, but i can move them out 5 inches, 4 inches and 3 inches
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: mail-order LSR
[Re: Hillbilly bike]
#725821
02/16/18 5:29 pm
02/16/18 5:29 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
OP

DOPE
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OP

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Joined: Dec 2013
Posts: 4,758
ohio, usa
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105-107 on my bike got the Kewpie Doll i'll settle for that little piece of paper. have to see where tbe keyways turn up.
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: mail-order LSR
[Re: kevin roberts]
#736218
05/22/18 7:34 pm
05/22/18 7:34 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
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DOPE
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Joined: Dec 2013
Posts: 4,758
ohio, usa
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okay, time to get serious. i'm almost done with the preparations! ![[Linked Image]](https://i.imgur.com/457tBOwl.jpg) the gearbox leak that troubled me at loring turned out to likely be due to the bolts backing off that held th einner gearbox on. there's a hole that needs helicoil, as well. ![[Linked Image]](https://i.imgur.com/QOQwaa2l.jpg) i had some problems with the machine staying in gear, but i'll shim up the spring a bit. the actual gear dogs on the transmission looked fine, just rounded over a bit right on the noses. i think my problem was just the very awkard shift linkage, which i'm going to simplify this time around. ![[Linked Image]](https://i.imgur.com/aIJOkwWl.jpg) i'm not planning on changing clearances for the cam. the bronze tappet blocks that i filed and shimmed up ought to be okay, using a copper base gasket. i give up some some compression and quench, but the extra plugs should help with that: ![[Linked Image]](https://i.imgur.com/apVzKU5l.jpg) pistons look fine as well, light scoring from no air cleaners, but that's all: ![[Linked Image]](https://i.imgur.com/qUmCzEal.jpg) i'll be changing the cam timing from 101.5/104 centerlines to around 104/107. should be okay, but i'll clay the pistons again to make sure. megacycle reccommends 103/105 to start out. then all i have to do is put the pieces back together: ![[Linked Image]](https://i.imgur.com/WhcVmS2l.jpg) and put it in: ![[Linked Image]](https://i.imgur.com/89HRWdRl.jpg)
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: mail-order LSR
[Re: kevin roberts]
#736235
05/22/18 9:20 pm
05/22/18 9:20 pm
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Joined: Oct 2012
Posts: 4,324 Running from demons in WNY
Hillbilly bike
BritBike Forum member
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BritBike Forum member
Joined: Oct 2012
Posts: 4,324
Running from demons in WNY
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The pistons on my bike looked worse that yours...I carefully removed the rings and keep them in order..Then wiped the pistons with a dry green scrubbie..Cleaned all the parts..reinstalled the rings in the same order...The bores had some scratches that more or less came out with a few strokes of a bottle brush hone.. What type/brand rings on your engine's pistons? I use the gas nitrided nodular iron rings that come with the MAP pistons..
I take off bike parts until it doesn't function, then put on just enough so it functions
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Re: mail-order LSR
[Re: kevin roberts]
#736262
05/22/18 11:39 pm
05/22/18 11:39 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
OP

DOPE
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OP

DOPE
Joined: Dec 2013
Posts: 4,758
ohio, usa
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i remember your pistons. nice to have asphalt to run on, even though we have shorter tracks than the salt and dirt people. i can only imagine what the bores would look like running on the dirt at el mirage-- that's all clay and silica. i have JE pistons that ed valicutt shaped for me from blanks at what i regard as horrifying expense, and i used the rings that came with them. they're marked "JE" with a "made in japan" origin, and typical asian packaging. ![[Linked Image]](https://i.imgur.com/10CJJQdl.jpg) ![[Linked Image]](https://i.imgur.com/AOThD0Ul.jpg) ^^^these are from my spare pistons, because JE would only do four at a time, so i still have two brand new ones to look at. bores still look pretty good, but i'll do a light scotchbrite on those and the pistons. i think i have about 50 miles on the motor, all told, with probably 25 of those WFO.
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: mail-order LSR
[Re: Rich B]
#736301
05/23/18 11:53 am
05/23/18 11:53 am
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
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DOPE
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OP

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Joined: Dec 2013
Posts: 4,758
ohio, usa
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Hey kevin, your name was in the local paper......their was an article about your wife’s political campaign. I was disappointed.....article said “her husband Kevin is a truck driver.” Not a word about LSR : eek hey she won the primary election, so its on for november. if she wins that one, then she has to go find a place to live in washington. she says she's going to loring in july, too busy in the campaign for the fall races.
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: mail-order LSR
[Re: kevin roberts]
#736462
05/24/18 8:45 pm
05/24/18 8:45 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
OP

DOPE
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OP

DOPE
Joined: Dec 2013
Posts: 4,758
ohio, usa
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the district is 18 counties, 7 hours top to bottom, and larger than the state of connecticutt. district 6, in blue: ![[Linked Image]](https://i.imgur.com/DSIuzKpl.png) it was gerrymandered for the republicans, and so now the democrats are itching for the chance to gerrymander it for themselves. for you non-yanks, this state is about 225 miles east to west.
Last edited by kevin roberts; 05/25/18 12:01 am.
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: mail-order LSR
[Re: Rich B]
#736618
05/26/18 5:07 pm
05/26/18 5:07 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
OP

DOPE
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OP

DOPE
Joined: Dec 2013
Posts: 4,758
ohio, usa
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You interested in doing a lap of T-County? It is possible to virtually ride the perimeter of the county on paved, gravel and in a few cases dirt roads. Maps out to about 250+ miles.
And don’t forget, OVBSAOC next weekend
shoot, i'd love to get the commando out. . the triumph is currently unpresentabl, and the thunderclone sprung a leak from the bbottom of tbe tank. has it been a year since ovbsaoc? im off sunday. maybe i,ll be tbete.
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: mail-order LSR
[Re: kevin roberts]
#737007
05/29/18 11:27 pm
05/29/18 11:27 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
OP

DOPE
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OP

DOPE
Joined: Dec 2013
Posts: 4,758
ohio, usa
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okay, got the new 10-over rod shell bearings from ed vallicutt. (the guy that made my crankshaft had an "oops," (his words), so we started at 10 over.) carefully removed the piston rings and set them aside, pegged and taped so they stay in the right place. then i took the rod bolts out. i'd measured them all before i assembled this crank, and the limit for ARP distortion is 0.001 inches. i'll look into them in a bit. ![[Linked Image]](https://i.imgur.com/HXYQH3ml.png) then i took out the shells to look over. looked kind of nasty- some striations from debris on the shells, probably dirt from the used oil tank that i thought i'd flushed out thoroughly when i originally ran this machine two seasons ago and didn't use an oil filter: ![[Linked Image]](https://i.imgur.com/oLqYhCul.png) ![[Linked Image]](https://i.imgur.com/BVXR1H8l.png) ^^^they're hard to see, but there some needle-point scratches in the top layer of the bearing that look like there were a few pieces of micro-grit that were pumped into the bearing space. the crank itself is fine, way harder than the shells, and there are no marks at all on the journals. what bothered me more were the little gray spots on the surface. i have an old dissecting microscope i look at stuff with (i used to be a paleontologist, and i can't help myself when i see something that might have fossils in it), so i put the cap under the lens, first at a magnification of 7x, then closer up at 40x: ![[Linked Image]](https://i.imgur.com/8dsBrGvl.png) ![[Linked Image]](https://i.imgur.com/3p6APYXl.png) this view is almost all the way across the shell at 7x: ![[Linked Image]](https://i.imgur.com/lTxCzVVl.png) this one is 40x. hard to focus on a curved shell: ![[Linked Image]](https://i.imgur.com/AVfzdrCl.png) and this one is also at 40x: ![[Linked Image]](https://i.imgur.com/53BK8x3l.png) at first i thought the bearing surface was flaking away in tiny specks, and then the loose metal traveled a bit along the surface and then gets smeared into the metal again. there are both holes in the surface and smeared lumps on top of it. but then i saw that some of the striations have a little black speck at the end of the groove, and there are similar black specks embedded here and there. maybe i just didn't clean that oil tank well enough. i'm not using it now, as i swapped it for a chopper oil tank from lowbrow that would give me more carburetor clearance. i mentioned earlier that this motor has about 50 miles on it, 25 of them wide open for forty or fifty seconds at 7000 rpm, and one run where i went through the lights at 8000 in third. i don't remember the make of these bearings (got them from ed), but the new ones he sent me are american made, and come in this box with a tiger logo: ![[Linked Image]](https://i.imgur.com/kzPy1pVl.jpg) ![[Linked Image]](https://i.imgur.com/jgouiZ2l.jpg) all this was just the right rod. the left one looks to have fewer scratches, but maybe more flaking. i'll take a look at that one in a bit. lol it was lots easier to take pictures through a microscope back when i had access to a leica on top of a high-zoot zeiss, and a darkroom to boot. this 1930's Bausch & Lomb and my telephone camera are pretty hokey, but they do give me something to work with.
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: mail-order LSR
[Re: kevin roberts]
#737124
05/30/18 8:43 pm
05/30/18 8:43 pm
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Joined: Dec 2013
Posts: 4,758 ohio, usa
kevin roberts
OP

DOPE
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OP

DOPE
Joined: Dec 2013
Posts: 4,758
ohio, usa
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new bearing shells were very different under 60x: ![[Linked Image]](https://i.imgur.com/BTY74jql.png) and the ARP rod bolts all checked out at within specs. ARP allows 0.001 stretch before you replace, and three of these were all within 0.0003. the worst was 0.0005 or so, but that could have been my clunky measuring. ![[Linked Image]](https://i.imgur.com/5jRiXfTl.png) using a micrometer isn't the best way to do this, because you're measuring on a not-particularly even surface on the end of the bolt, but i consistently measured within 0.0002 on repeated measurements, so i figured that was good enough to detect a thousandths. the stretch gauge centers on the dimples on each end of the bolt, but i don't have pointy anvils for the micrometer yet. i've run out of time, so i'll torque the rod caps tomorrow. right now i'm just catching moments here and there.
every day you do not take a chance is a day of your life that you will never get back.
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