Clutch peddle ratio?

[Swiss_Toni]

Does anyone know what the clutch peddle ratio for standard peddle box is?

Thanks, Greg

[Steve_D]

Ratio of what to what?
Hydraulic, pedal length etc.

Steve

[Swiss_Toni]

Pedal.

Or if someone can how to measure it (I think I know but I thought it was better to check.

[Swiss_Toni]

A bit of poking around and I found my own anwser.

http://www.mcleodracing.com/info/?id=5262

http://www.mpbrakes.com/uploads/documents/pedalrat...

[GTRCLIVE]

Clutch and brake pedal ratio are 3.5:1 on a std ultima. I have 5:1 now with a similar setup, so they can be modified to ease pedal pressure. You need to be careful you can still get full stroke though if you modify them.

[Swiss_Toni]

Thanks! That helps confirms my upside down in the foot well mesurements of 3.6:1!

[ezakimak]

GTRCLIVE said:

Clutch and brake pedal ratio are 3.5:1 on a std ultima. I have 5:1 now with a similar setup, so they can be modified to ease pedal pressure. You need to be careful you can still get full stroke though if you modify them.

is the higher ratio better for the heavy / larger clutch required for the V8 or is it for another reason. im trying to work out what ratio i require for the hillclimb car at the moment.



by moveing the pedal pivot on the floor plate i can get something simmilar to the ratios mentioned above. the whole floor plate moves forward and backwards on the red angle iron bars as well so that different sized drivers can be fitted - standard bag seat position and belt locations that way.

three rows of holes on the foot plate spaced at a different pitch to the holes on the red angle iron chassis brackets gives me adjustments for reach at ~5mm per set of holes - using a 10mm bolt.