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Clutch Mods Needed...
http://www.kawi2strokes.com/forum/viewtopic.php?f=14&t=13043
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Author:  Frank [ Tue Sep 05, 2017 5:56 pm ]
Post subject:  Clutch Mods Needed...

I brought my H2 up to the land speed races at Limestone, ME last weekend (Loring Timing Association) www.loringtiming.com. I had some aero issues with my handlebar fairing (and removed it) but the biggest problems were with the stock clutch: I kept blowing through it. The bike has been pretty heavily ported with VM38's, pipes, etc. and I couldn't get much over 120 mph w/o it slipping pretty badly.

So what is the current recommendation for clutch mods? Advice appreciated!

thanks

Author:  mraxl [ Tue Sep 05, 2017 6:08 pm ]
Post subject:  Re: Clutch Mods Needed...

Some ideas here: http://kawatriple.com/tips/clutchmod.htm

Author:  Frank [ Tue Sep 05, 2017 6:30 pm ]
Post subject:  Re: Clutch Mods Needed...

Thanks Dale. Midnight reading! :thumbup:

Author:  demus [ Wed Sep 06, 2017 5:58 am ]
Post subject:  Re: Clutch Mods Needed...

With the that kind of racing you may need a lock-up clutch to be sure the clutch is not letting you down.
I suppose rules will dictate what can and can't be used.

Author:  Frank [ Wed Sep 06, 2017 6:53 am ]
Post subject:  Re: Clutch Mods Needed...

Actually, any kind of clutch is allowed. I should have added that I use a radial bearing under the pushrod, HD springs (not sure how many but at least 3), SyTech pusher and Gear Saver lube. I haven't looked at the plates lately but it has been awhile since I've scuffed the steels. Everything works fine until it hits hard... :)

Author:  Frank [ Wed Sep 06, 2017 7:10 am ]
Post subject:  Re: Clutch Mods Needed...

Image

Author:  soflah2b [ Wed Sep 06, 2017 7:48 am ]
Post subject:  Re: Clutch Mods Needed...

I run a 15 plate conversion that works well but a lockup clutch is the best bet and then you can run light springs . i run one on my turbo bike.

Author:  Ja-Moo [ Wed Sep 06, 2017 9:59 am ]
Post subject:  Re: Clutch Mods Needed...

1000s of guys ran 120 mph plus for decades without a lock up. Do the extra plate mods with 5 springs and you should be fine. And I had a few of them "wobble" fairings myself...... ;)

Author:  demus [ Wed Sep 06, 2017 12:10 pm ]
Post subject:  Re: Clutch Mods Needed...

I got the 15 plate conversion 5 heavy springs , I weigh a lot more than anyone here I would guess, and that does matter, 90 RWHP, lots of full throttle runs and never had any clutch slip.
I also present a fairly large wind barrier.
But I also have never gone 120mph on mine yet.

Author:  Frank [ Wed Sep 06, 2017 8:13 pm ]
Post subject:  Re: Clutch Mods Needed...

I've gone 127 with this clutch setup (before current engine mods). I couldn't really test on the street where I live as speeds get too fast too quickly. Slip was worse in top two gears (I think).

After reading material in the resource section I'm confused about potential machining with the 15 plate mod. Is it still eight H2 friction plates and seven H1 steel plates with everything else left unchanged?

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