Dusty
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| posted on 15/4/06 at 04:53 PM |
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Clutch Pedal Leverage
Just changed to floor mounted pedal box with cable operated clutch, type 9 box. Current clutch pedal leverage ratio is 3:1 and it's far too
heavy.
Suggestions please for a more sensible ratio.
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DIY Si
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| posted on 15/4/06 at 04:57 PM |
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4:1, 5:1...... Depends upon what you consider too heavy really. Try 4:1 then just keep going up, if poss, to something that feels right for you.
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indykid
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| posted on 15/4/06 at 05:03 PM |
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new cable?
the indy has about 3:1 clutch ratio, and i'd never have deemed mine 'heavy'
heavier than a tin top, but then you'd expect that imho.
tom
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bimbleuk
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| posted on 15/4/06 at 07:15 PM |
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The clutch type will make a difference too. My setup has a type 9 box and a Toyota clutch. The pedal ratio is 4:1.
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planetester
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| posted on 15/4/06 at 08:37 PM |
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Remember the higher the ratio , the more pedal travel you need for the same release arm movement
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Dusty
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| posted on 15/4/06 at 08:47 PM |
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I would like 7/1 but can't extend the footwell to the radiator to get enough range.
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auzziejim
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| posted on 15/4/06 at 08:58 PM |
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quote:
Originally posted by Dusty
I would like 7/1 but can't extend the footwell to the radiator to get enough range.
or your leg 
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Dusty
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| posted on 15/4/06 at 09:14 PM |
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Pedal is 150mm long so 35mm arm length will give a ratio of 4.3:1, 30% decrease in cable pulled and 30% less effort. (I think. Not brilliant at
maths.)
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