Triumphrat

tcb · 05-09-2007

For those of you who are having any crankwork done, if the clutch drive gear is removed, it MUST be welded when it is replaced. Apparently, removing it requires enough force to alter the tolerances necessary to retain it at higher RPM forces. Mine came loose at 120 MPH entering turn 8 at Willow springs last week and could have been disasterous. The wavy washer on the starter drive system broke into a bunch of pieces from the vibration and luckily didn't "get into the works" as it were. I had a shop back in Utah weld it as shown, and it held up for about 400 miles of 9,000 RPM track days this weekend. Incidentally, if you have it surface welded as I did, it has to be a very fine bead to keep from interfering with the sprag clutch assembly.

[ This message was edited by: tcb on 2007-05-09 16:43 ]

sweatmachine · 05-09-2007

thanks for posting. I'm really glad you were able to get it welded up without splitting the cases, and also glad that it didn't explode in your clutch cover.

Now tell me more about that stroker motor!

tcb · 05-09-2007

I am extremely pleased so far. Last year, even if I could corner with the 600's, they would leave me in the dust on the staights. NO MORE! I even pulled a few TL1000's this weekend at the track. Longevity will obviously be a concern, but I'm having so much fun with it, that I don't care if I have to rebuild it often. I've been running it on the rich side for the first 500 miles, and now will set it to the 13's it likes, and expect some more power. My valves didn't get here in time to put them in, so the big carbs, porting work and long duration cams aren't being utilized the way they were intended. Peak HP is reached at 7500 RPM. Will obviously move up with the better flow the 1mm over valves will supply. :-D

bonnieblackinfl · 05-09-2007

WOW, thanks for the tip! Glad to see you kept the rubber side down!

Greg

sweatmachine · 05-09-2007

what cams are you using? 790 cams?

tcb · 05-10-2007

Yes. :wink:

sweatmachine · 05-10-2007

did you find the 790 cams to be a big improvement over the 865 cams? I've been thinking about getting some 790 cams.

Did you ever run the stroker motor with the 865 cams, or only with the 790 cams?

WS · 05-10-2007

Was there an issue with balance? If so, what method was used?

tcb · 05-10-2007

I did the stroker, 13:1, HSR42's, porting, pipe change, cams, altered ignition timing all at once, so I can't comment on individual effects. Sorry. Because I left the counter balancers in and the Carillo-Wiseco combination is lighter than the stock configuration, it seems to run even smoother than before. The crank was balanced after stroking, but without rods and pistons.

sweatmachine · 05-10-2007

so I guess it's a race gas only bike...

I bet that is fun to ride! Did you get hp/tq numbers?