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2005 R1 Clutch
scootz - 19/8/07 at 07:00 PM

I understand that it is cable-operated.

Can it be changed (easily!) to hydraulic capability?

nitram38 - 19/8/07 at 07:12 PM

Depending on your slave cylinder travel, you might have to modify your clutch lever arm length to make sure you have full pedal travel and a workable clutch.
See my thread here

yorkshire-engines - 19/8/07 at 09:40 PM

yes it can but dont use too much travel on slave cyl
it can also be made fully auto a co called flatshifter does the kit
works with a centrifuge and works well

nitram38 - 20/8/07 at 08:08 AM

quote:
Originally posted by yorkshire-engines
yes it can but dont use too much travel on slave cyl
it can also be made fully auto a co called flatshifter does the kit
works with a centrifuge and works well


You still need a clutch control for selecting 1st even with a flatshifter.
A lot of builders have used a stop on the clutch pedal to limit slave cylinder travel, leading to a short "ON, OFF" pedal with little feel.
If you work out your slave travel max and change the clutch arm to suit, then you will get a longer pedal with more feel.
Don't forget to remove the clutch arm freeplay from your calculations.

scootz - 20/8/07 at 07:51 PM

Eeek - sounds a bit technical!

I only asked as I've inherited a rather spangly Wilwood brake / clutch pedal set. Only problem is that the clutch pedal operates a 0.625 MC...

nitram38 - 20/8/07 at 09:11 PM

Then all you need do is buy a wilwood pull slave and add an arm to the clutch lever with a 67mm centre.

scootz - 21/8/07 at 10:22 AM

Sorry to be Mr Thicky, but what needs to be done at the engine end to adapt from Cable operation to Hydraulic?

nitram38 - 21/8/07 at 10:32 AM

Look at my link.
It shows the drawing of the lever.
The only difference is that I would have used an imperial rod end so that the slave did not need re-threading and just made the new lever arm have a bigger hole.
I originally made it an M6 rod end to fit the original arm, before I realised that the clutch pedal would have been too short.



[Edited on 21/8/2007 by nitram38]

scootz - 21/8/07 at 11:03 AM

Penny has dropped... thanks!