ssanddemon Posted May 31, 2006 Report Share Posted May 31, 2006 Wondering what the big power guys are doing to keep the clutch from heating up massively on hillclimbs in the dunes, short of a lockup. Mine is going from 1/16-1/8" free play at the grip lever to like 1". Gotta adjust 'er up, but when shee cools down, the adjustment comes back and it's too tight. Doesn't seem to be slipping one bit, just massive heat on the launch, sometimes I'm fanning in the real (Oregon) wet stuff. I'm thinking that the steels are warping from the heat; had it apart for a new basket a few weeks ago, and they were a bit blue then, probably real dark now since I just built some more power into her and shee's heating the clutch up more than before. I have a new set of steels to go with my existing toomey fibers, but I want to get it figured out before changing out the old steels. I have the springs at half toomey and half stock (which just about kills my arm) and have been running JD-20 tractor oil. I am thinking of trying a good grade of ATF, but I don't think it protects the gears as well. Since I like to change the trans oil a lot, I don't want to spend $8 a quart on the foo-foo stuff; but I will if I need to. Obviously, a lockout is the next step, but I would like to keep the motor at this level for now- moneywise. Any suggestions? Quote Link to comment Share on other sites More sharing options...
ssanddemon Posted June 2, 2006 Author Report Share Posted June 2, 2006 Bump? No help? Quote Link to comment Share on other sites More sharing options...
Rustbag Posted June 2, 2006 Report Share Posted June 2, 2006 I know u said "short of a lock up", but that's prolly what u need. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted June 2, 2006 Report Share Posted June 2, 2006 I don't think you "need' a lockup... Try a heavier clutch setup, thicker plates, and stiffer springs. How old is your clutch cable, could it be stretching too? Bluing plates means its heating up...heating up is caused by not enough friction. I'd try thicker steels and stiffer springs. With your mods, you don't need all 6HD springs. I'd bet 3 stock and 3HD would be fine. Quote Link to comment Share on other sites More sharing options...
ssanddemon Posted June 2, 2006 Author Report Share Posted June 2, 2006 Thanks for the replies... Unfortunately, I am already running 3 and 3 springs (or is it 4&4? can't remember) and it's a brutal pull tho I like the idea of a new cable. The more I dwell on this, the more it seems that it's gotta be slipping; because all I ever do is dump the clutch to get going anyway- no reason to feather it, just boom & go. So for it to really heat up, I would need many launches in a row. Not just one, a steep climb under power and a gooey- feeling lever at the top of the hill. Power is enuff on this bike, if it were slipping just a little, I'd most likely never feel it. Well, I know the frictions are good because I looked at em 2 weeks ago. Guess it's time to put in the new steels and start using all the toomey springs, much as my arm hates the idea. Lockup is probably gonna be next. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted June 2, 2006 Report Share Posted June 2, 2006 (edited) Unless you're pulling 70 +HP....3 and 3 should be enough....(if you've got 4 and 4...there's your problem... ) Not to sound like a jerk...if you have a trail port and your mods, you're probably not close to there... I got Jeff's kit from FAST last year. Beat the tar out of mine last year. When I ordered my Cub from Jeff this spring...asked him about replacing the clutch, too...and he said it should be fine. I did get a new basket, inner and outer...though. I have about 15 to 20 runs on the dyno with this motor, and the clutch doesn't slip at all. Nothing abuses a clutch like a brake dyno... If you don't have one already, get the EZ pull lever, perch and new cable. My buddies stocker 98 has the oe clutch in her...(just fried it...finally... ) and I put the EZ pull lever and new cable on from Magic. It literally is as easy as a brand new 125 MXer... It's almost scary how easy it is, and needless to say when we ride with buds, they pull his clutch lever and then sit back with disgust and jealousy.....quite funny actually. You do have the parking brake removed, etc, right? Edited June 2, 2006 by dajogejr Quote Link to comment Share on other sites More sharing options...
ssanddemon Posted June 2, 2006 Author Report Share Posted June 2, 2006 Yep, all the BS is removed... I call it a trail port because I did it myself; raised the exhausts about 4 mm, widened about 2mm on either side. Knife-edged and narrowed the intake seperators and put a good pebbled surface on the tracts as well. Case matched cyls, cut head, V. F. 3s etc. from my sig. I want to get it on the dyno at Twister in a couple of weeks to have them eyeball my setup and give me some more power ideas, but it runs 320-330 mains depending on the outside temp, 30 pilots and 7 degree timing. I only know that my other shee with Fatties, K&Ns and Noss with 21s should be about 45 horses. It runs neck and neck with piped 450s, so this sounds about right. This one with the clutch issue has massively more than that, pulls two gears higher up the same dune and gets white knuckles and "oh shit" from other guys who have ridden it; wheelies in 6th gear in the sand; I really have no idea what the hp is tho. Got a set of ASV C-5 levers and a new clutch cable coming soon, I'm gonna see how bad the pull is with all the Toomey springs and see if the problem goes away. I have heard good things about Jeff's clutch, if my curent setup is intolerable, I am gonna get one. Quote Link to comment Share on other sites More sharing options...
ssanddemon Posted June 4, 2006 Author Report Share Posted June 4, 2006 Got the new ASV lever setup installed today, but the cable is backordered. Still, a huge improvement over previous clutch pull with the orginal lever setup. With a new cable, I think the pull will be maneageable with all the Toomey springs in there. Quote Link to comment Share on other sites More sharing options...
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