What happens if you use a non slipper clutch plate (like a stock pressure plate) on a slipper clutch?
Quote from: He Man on August 30, 2009, 07:12:09 AM
What happens if you use a non slipper clutch plate (like a stock pressure plate) on a slipper clutch?
It will no longer be a slipper.
Not sure if it will damage the ramp/spring mechanism. I would think it would.
Any idea where i could find a pressure palte for slipper clutches? They seem to be out of stock @ all our sponsors, or they just dont carry them.
Quote from: He Man on August 30, 2009, 07:21:00 AM
Any idea where i could find a pressure palte for slipper clutches? They seem to be out of stock @ all our sponsors, or they just dont carry them.
I don't, but if you remove the spring and ball bearings a stock plate should work without damage (and slipping) until you can find one.
What happened to yours?
not mine but my friends 749. It came with a stock pressure plate. When i checked out the bike before purchase the clutch was fine. then once we took it home and rode it around the block the clutch post bent... i chalked it up to bad memory and just figured i missed it.
But he keeps complaining of the clutch acting werid, jerky, delayed and making groaning noises. Of course if it wants to slip but the pressure plate is not allowing it to slip, that sounds like it could cuase those problems.
I just rang him up and he says he wants to buy a new one, theres the ebay $600 ones that are no named branded and theres the well known branded ones (STM EVR MW) that are about 900ish and hes on edge about what to buy.
Yoyodyne shows a replacement for the OEM 749R slipper.
I don't think it would work on an aftermarket unit. They're all a little different.
Personally I don't think the maintenance on a slipper is worth it for a street bike.
Im trying to convince him to go to a stock unit since i have a spare one that he can just take. They seem to chew up friction plates prety quickly.
Check all the plates before he orders a new one. The sympoms you described could just be worn and glazed plates which can be fixed for $0 in about 60 minutes.
For what it's worth, I think riding a big twin without a slipper clutch is nuts - unless all you do is commute.
Your talking about the metal plates right? They were recently replaced and the ones that came out were indeed burnt looking. the new ones have about 1,000 miles on them and they look fine.
Even when you are riding the twisties, i've never felt the need for one. but i dont ride insanely hard either.
Quote from: Norm on August 30, 2009, 08:11:03 AM
Check all the plates before he orders a new one. The sympoms you described could just be worn and glazed plates which can be fixed for $0 in about 60 minutes.
For what it's worth, I think riding a big twin without a slipper clutch is nuts - unless all you do is commute.
Each to their own.
It's really rare when I feel I need one.
Even on the track.
I feel the same about a damper too.
I know we disagree. ;)
The pressure plate doesn't house any of the components that make a slipper a slipper. Those are contained in the basket & drum (ramps/balls). The only thing that may be "special" about a slipper pressure plate is its thickness and venting (for cooling). The thickness can be adjusted for with stack height and if you run an open cover (or none at all) the venting is a non-issue. There are some mfg'ers that have a friction/damping material on the inside face of the pressure plate vs being smooth faced pressure plate material (Yoyodyne) but stack "method" could compensate for this too...
He ended up buying a brand new one from an Italian seller on ebay. for $570shipped. Ill let you guys know how it looks like when it comes.
Soo, whatcha doing with that old piece of junk? Wanna ship it to NC? You never know when you might want to have some good will in the bank around the Blue Ridge Parkway.