Clutch power assist?
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Subject Author Date
Clutch power assist? Robert Roland 07-10-2008
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Posted by Robert Roland on July 10, 2008, 10:26 am
I have an old injury in my left wrist that causes pain when I use the
clutch a lot. Stop-and-go traffic is particularly bad.

Is there any way to make the clutch lighter to operate?

My clutch is hydraulic (1996 CBR1000F).
--
RoRo


Posted by . on July 10, 2008, 11:06 am

> Is there any way to make the clutch lighter to operate?

1. A longer clutch lever is the simplest solution. You have to move
the lever further do release the clutch

2. Lighter/slightly shorter clutch springs might work, but you could
have clutch slippage.

3. You could alter the hydraulic pressure ratio by juggling relative
diameters of master cylinder and slave cylinder. Brake master
cylinders have two common diameter pistons, 9/16" and 5/8" inch, I
dunno what the diameter of the clutch master cylinder piston is.

4. You could remove the master cylinder from the handlebar and
relocate it
somewhere else. Then you could use a cable type clutch lever that
operates a "mouse trap" device with an over center spring that gives a
mechanical advantage once the spring is moved to a certain point.
"Mouse traps" were used with old Harleys and Indians when they were
converted from foot-operated clutch to hand operated clutch.

5. Move the clutch master cylinder to the right hand side of the
motorcycle
and operate the lever with your foot.


Posted by Who Me? on July 10, 2008, 11:58 am


> Is there any way to make the clutch lighter to operate?
>

It would take some practice to get it right and.....might be hard on the
transmission if you don't but.......you could shift (kinda) like the drag
racers do with a kill switch instead of the clutch.

Except for the 1-2, 2-1 transition, some people are able to make the rest of
the shifts, in both directions, without the clutch at all. Going UP is
fairly easy; coming back down is a little touchy.



Posted by The Older Gentleman on July 10, 2008, 3:04 pm

> I have an old injury in my left wrist that causes pain when I use the
> clutch a lot. Stop-and-go traffic is particularly bad.
>
> Is there any way to make the clutch lighter to operate?
>
> My clutch is hydraulic (1996 CBR1000F).

Experiment with a different m/cylinder and lever combo.


--
BMW K1100LT Ducati 750SS Yamaha XT600E Honda CB400F MZ TS250/1
chateau dot murray at idnet dot com
"What you're proposing to do will involve a lot of time
and hassle for no tangible benefit."

Posted by on July 14, 2008, 9:21 pm
Depending on your finances, maybe get the Yamaha FJR AE, it's
clutchless, so to speak.
Bg

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