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Hand-operated vs. Pedal clutch cylinder
xico_ze54 - 12/3/07 at 12:01 PM

when changing the hand-operated clutch master cylinder from a bike to pedal operated in a car, wich is the ideal bore of the master cylinder to be used? the engine in focus is a '94 CBR1000.

cheers
Amadeu

BenB - 12/3/07 at 12:37 PM

If you've got the hand-operated set-up why not keep it? Replace the squeeze grip with a lever arm and attach to clutch pedal....

xico_ze54 - 12/3/07 at 01:13 PM

in my case I have not the hand operated set up. so I get to find some way to put on a new master cylinder, but wich size?

xico_ze54 - 12/3/07 at 01:45 PM

quote:
Originally posted by CaLviNx
Hi

another way round it could be to use a standard single outlet clutch master cylinder & a mini slave cylinder and take out the bike slave cylinder and put in the mini one and play with the ratios to get the pedal "feel" and throw to what you want it to be.


the problem still is: wich bore?
for brakes I intend to use 0.75 & 0.65 from Willwood (as I used in my first Locost), but for clutch I've no idea.

G.Man - 12/3/07 at 01:51 PM

Or you could keep a hand operated clutch

xico_ze54 - 12/3/07 at 02:08 PM

quote:
Originally posted by G.Man
Or you could keep a hand operated clutch



look some posts above: I haven't that piece.

OX - 12/3/07 at 02:11 PM

you could use any rear brake master cylinder off a honda ,yamaha ,triumph or suzuki


Description
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G.Man - 12/3/07 at 02:30 PM

quote:
Originally posted by xico_ze54
quote:
Originally posted by G.Man
Or you could keep a hand operated clutch



look some posts above: I haven't that piece.


Yes but if you are buying parts anyway, then what does it matter?

xico_ze54 - 12/3/07 at 03:43 PM

quote:
Originally posted by G.Man
quote:
Originally posted by xico_ze54
quote:
Originally posted by G.Man
Or you could keep a hand operated clutch



look some posts above: I haven't that piece.


Yes but if you are buying parts anyway, then what does it matter?


thanks all for solutions presented, but for me its easier to pick a master cylinder near the range of the brake ones, for instance a Willwood model.

it's hard for me look arround for motorcycle salvages. In the end the time spent doesn't pay off.

It's more pratical for me buy three new cylinders, 2 for the brakes and 1 for the clutch.

bennjamin - 22/6/16 at 10:10 PM

Bumping this one up

Looking and reusing the hand clutch off a salvaged bike - and hopefully some sort of quickshifter -

Something I haven't worked out is this - is driving a BEC like riding a motorbike in that you use the clutch for idle , low speed manouvering and can shift clutch less the rest ?
In my mind a hand clutch seems silly and dangerous for everything above 1st gear ?

40inches - 23/6/16 at 02:29 PM

quote:
Originally posted by bennjamin
Bumping this one up

Looking and reusing the hand clutch off a salvaged bike - and hopefully some sort of quickshifter -

Something I haven't worked out is this - is driving a BEC like riding a motorbike in that you use the clutch for idle , low speed manouvering and can shift clutch less the rest ?
In my mind a hand clutch seems silly and dangerous for everything above 1st gear ?


I think the premise was to use the hand cylinder for the foot clutch pedal.
Clutchless up change ok with practise, clutch for down changes.