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Title: Lighter Clutch Pull - Spring Removal Post by: junior varsity on June 29, 2008, 01:19:36 PM I'm looking for a definitive answer, I searched for awhile and found no hard-fast rule regarding 4 spring clutches:
I have a 1999 Monster 900 - It has a few things done to it, and is for road going only (no track). I would like to lighten the clutch the 'free' way. I already have an Evolutione Slave Cyl. There is no real reason, other than tinkering and knowing there are people out there that do this. What are the disadvantages, if any, of removing two opposing springs from my standard dry clutch and running with only 4 springs. I have seen slipper clutches with similar design. I already have the silghtly heavier duty stainless springs so I feel a loss of strength wouldn't be as significant as it would be with the stock springs. Since the motor is not a 999R or 1098 motor, I don't feel that it would require all 6 springs. Six Springs to Four Springs? Thoughts? Title: Re: Lighter Clutch Pull - Spring Removal Post by: stopintime on June 29, 2008, 02:55:11 PM The definitive answer must be: try it.
If you experience slippage, go back. If not - success [thumbsup] (just thoughts from reading about it - from a wet clutch looser ;)) Title: Re: Lighter Clutch Pull - Spring Removal Post by: Slide Panda on June 29, 2008, 03:04:40 PM You probably won't have any issues. Hell moto wheels even sells a pressure plate that can *only* use 4 springs. A '99 900 while fun isn't the most powerful thing going and 4 stiff springs is probably enough to keep the stack nice and ticght.
Title: Re: Lighter Clutch Pull - Spring Removal Post by: junior varsity on June 30, 2008, 06:01:53 AM Seems to work after a 100 mi "test ride" yesterday. I did some harder downshifting and acceleration to see if anything felt out of place. So far, nothing (aside from a far lighter clutch pull).
Title: Re: Lighter Clutch Pull - Spring Removal Post by: brad black on July 01, 2008, 01:57:04 AM i don't understand why people need such proding to try this, but that's just folks i guess.
if your bike has a 3 phase alt (99 should) then it also should have the 1.84:1 ratio primary drive gears. this reduces the load on the clutch 8% compared to a 2:1 primary drive gear bike. clutches work on spring seat pressure too, not spring rate. the spring rate itself is part of seat pressure, but not all of it. softer springs with more preload will give you the same seat pressure for the clamping load, but will be softer on the lever. you just need to make sure they don't coil bind. |