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Slipper Clutch Plate Q

Started by He Man, August 30, 2009, 07:12:09 AM

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He Man

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?

ducpainter

#1
August 30, 2009, 07:16:24 AM
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.
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He Man

#2
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.

ducpainter

#3
August 30, 2009, 07:28:54 AM
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?
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


He Man

#4
August 30, 2009, 07:39:09 AM
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.

ducpainter

#5
August 30, 2009, 07:50:36 AM
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.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


He Man

#6
August 30, 2009, 07:59:27 AM
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.

Norm

#7
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.

He Man

#8
August 30, 2009, 08:19:04 AM
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.

ducpainter

#9
August 30, 2009, 12:47:19 PM
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. ;)
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


hypurone

#10
August 31, 2009, 05:54:47 AM
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...
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He Man

#11
August 31, 2009, 11:39:46 AM
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.

Norm

#12
August 31, 2009, 02:37:58 PM
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.
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