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alp's 200mph pre-unit triumph #691828 04/15/17 8:01 pm
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kevin roberts Online Confused OP
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if anybody can do it, he can.

https://www.facebook.com/alpracingd...3045/978200035616289/?type=3&theater

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]


can anybody identify this front tire? i found the wheel in a harley catalog once, it's 17 inches. (. . . and $1700!!!!)

[Linked Image]


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: alp's 200mph pre-unit triumph [Re: kevin roberts] #691842 04/15/17 9:21 pm
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konon Online Content
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He sure knows how to work aluminum. Hope it gets him through the air wall, and to 200 MPH


1968 BSA Firebird
1200 HD
XS 1100
1972 Rickman 125
Re: alp's 200mph pre-unit triumph [Re: konon] #691867 04/16/17 12:16 am
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My LSR Triumphs are like stone axes in comparison...


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #691970 04/16/17 9:47 pm
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He has done a phenomenal job with this new bike from building the chassis to the excellent hand formed body work. I really do hope he makes the 200mph club.


1955 BSA Bantam D1 Plunger
1956 BSA A10RR Street and LSR Bike
1961 BSA C15S
1966 BSA spitfire
1969 Triumph T100C
1970 Triumph TR6R
1970 Triumph TR6C
1972 BSA Lightning LSR Bike
1974 Triumph T150V
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #696925 05/31/17 3:54 am
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mangold Offline
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Originally Posted by kevin roberts


[Linked Image]


can anybody identify this front tire? i found the wheel in a harley catalog once, it's 17 inches. (. . . and $1700!!!!)

[Linked Image]


Pretty sure it's a Goodyear "front runner" usually seen on the front wheels of drag cars.

Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #699580 06/25/17 6:16 pm
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reverb Offline
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...just watched a clip from Born free 9 where you see this bike finished; a few seconds but looks fantastic.

At about minute 11.

https://www.youtube.com/watch?v=7oJ69c_WR9E

Re: alp's 200mph pre-unit triumph [Re: reverb] #699582 06/25/17 7:02 pm
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Originally Posted by reverb
...just watched a clip from Born free 9 where you see this bike finished; a few seconds but looks fantastic.

At about minute 11.

https://www.youtube.com/watch?v=7oJ69c_WR9E


I'm waiting to see how he sits on (or in) it smile


Kurt

-- Don't believe everything you think.
Re: alp's 200mph pre-unit triumph [Re: kurt fischer] #699587 06/25/17 7:44 pm
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Originally Posted by kurt fischer
Originally Posted by reverb
...just watched a clip from Born free 9 where you see this bike finished; a few seconds but looks fantastic.

At about minute 11.

https://www.youtube.com/watch?v=7oJ69c_WR9E


I'm waiting to see how he sits on (or in) it smile



Imagine kneeling and sitting down on your heels.


God rides a Triumph but wishes it was a Norton.
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #699600 06/25/17 11:26 pm
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Lovely sheet metalwork. One question though, how does the engine get cooling air ? It appears to be shrouded off completely.

Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #699604 06/26/17 12:00 am
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born free 9 at 10:54

he's got the head reversed:

[Linked Image]


every day you do not take a chance is a day of your life that you will never get back.
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #699626 06/26/17 4:08 am
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...is like seating on a possible time bomb.

Re: alp's 200mph pre-unit triumph [Re: bon] #699646 06/26/17 11:15 am
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"One question though, how does the engine get cooling air ? It appears to be shrouded off completely."

Some people at Bonneville running methanol claim they need no additional cooling required due to the evaporative cooling effect of the fuel. I suspect it is the same with nitro - especially when you're only going to be running the thing for a minute or two.

"Imagine kneeling and sitting down on your heels"

If I did that, not only would I need two people to get me started, - - my stops would be like Artie on Laugh-in!

"...is like seating on a possible time bomb." I'll ditto that.

Tom


Life's uncertain - go fast now!
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #699650 06/26/17 12:51 pm
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Originally Posted by kevin roberts
born free 9 at 10:54

he's got the head reversed:



It may be because of available space or "Ram Air" to the carbs or for cooling.....Back in the 1920's engineers figured out that radial air cooled aircraft engines had less problems when cooling air passed over the intake before the exhaust......Look at a photo of a Vincent engine..However, modern light plane engines don't follow this rule.... Plenty of very high power air cooled modern bike engines have the exhausts in front...


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #699659 06/26/17 2:22 pm
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konon Online Content
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I believe the head reversal is for the exhaust design he wanted.


1968 BSA Firebird
1200 HD
XS 1100
1972 Rickman 125
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #722960 01/23/18 5:40 am
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Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #723018 01/23/18 4:54 pm
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kevin roberts Online Confused OP
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couldn't pause the video easily. but:

new leathers and helmet. look like bates: $$$. same dirty old boots.
kibblewhite patch-- pushrods? tappet blocks? springs, valves?
klotz patch
webcam patch. what cam? his own grind?
stock crank. cut for cam clearance.
old cases, not those british new ones he's been using. why is that?
MAP rods . . .

what else?

still don't know the tires.

i couldn't figure out the riding position for the longest time, until it came to me a week or so ago, looking at his skeleton. that is a genuinely new idea. how does he brake? the rear brake must be functional.

only an oil pressure gauge on the left clip. he's back to running without a tach again, apparently.

rear sprocket is tiny-- 30-something. he's relying on the torque from the nitro to get him up there.

Last edited by kevin roberts; 01/23/18 5:13 pm.

every day you do not take a chance is a day of your life that you will never get back.
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #723055 01/23/18 11:49 pm
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Alp told me Web grinds the cam to his specs...Going fast is all in details...


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #723272 01/26/18 1:12 am
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compare alp's machine and effort to ack attack's bolivia run in 2010, at 394 mph



i'd ride either, but given the restriction of one or the other, i'd choose alp's. not to diminish the ack attack effort, it's just what they're doing isn't as interesting to me.

bolivia has a much longer stretch of intact course than anything in north america except edwards, which is off-limits.


every day you do not take a chance is a day of your life that you will never get back.
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #723277 01/26/18 2:21 am
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Alp has done some very interesting design. Hilborn port fuel injection. The carbs act as air throttless at speed. They are jetted as he starts the bike on methanol for a few minutes with some QD lines. No float bowls, just gravity feed to the carb. Then switches to nitro and takes off.

Oil is total loss. It runs through the engine into a waste tank. It is part of the cooling system because no air comes through the front.

He had wobbles on three out of four runs but mostly due to ruts in the track. Not an issue. He is softening the fork and had he known the salt was this bad he would have built it with rear suspension.

The front fender and the seating position got SCTA approval. SCTA was concerned that it was a dustbin fairing.

David

Last edited by David Dunfey; 01/26/18 2:22 am.
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #723280 01/26/18 2:33 am
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it's no more a dustbin than any of the streamliners.

but i suppose in a partial class it does bring back bad memories for some people even older than me.


every day you do not take a chance is a day of your life that you will never get back.
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #723306 01/26/18 11:28 am
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Nitromethane needs an air fuel ratio of about 2-1 compared to about 12-1 for gasoline at full throttle..So the fuel tank becomes the float bowl so to speak...He may use total waste oil because of the fuel dilution ?


79 T140D, 96 900M Ducati ,2001 Sportster....On a bike you can out run the demons..
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #724895 02/09/18 5:02 pm
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Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #724968 02/10/18 4:05 am
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[Linked Image]
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Last edited by kevin roberts; 02/10/18 4:21 am.

every day you do not take a chance is a day of your life that you will never get back.
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #724969 02/10/18 4:08 am
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air shifter
cable-operated brake-- that was one i couldn't figure out
asymetric handlebars


a lot of thought went into this. and money. those airbrushed cutaway paintings will run two grand apiece.

notice the differences between the early and the later frames.

Last edited by kevin roberts; 02/10/18 4:14 am.

every day you do not take a chance is a day of your life that you will never get back.
Re: alp's 200mph pre-unit triumph [Re: kevin roberts] #725080 02/10/18 9:37 pm
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Beautiful Bike, beautiful renderings, but looks hard to ride. Alp has plenty of years left to figure out the rest.
Tom


Life's uncertain - go fast now!
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