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Calculating the Correct Pedal Ratio
Having the correct pedal ratio is extremely important. Anytime you are going from a manual brake set-up to power (or vice-versa) you are going to need to correct your pedal ratio. Here is a quick & dirty primer on how to do it.
pedal-ratio
THE EFFECT OF PEDAL RATIO AND BORE SIZE ON HYDRAULIC PRESSURE OUTPUT
Pedal Ratio
Bore Size
lbs input
PSI out
6:1
1 1/8
75
453
6:1
1
75
573
6:1
7/8
75
748
5:1
1 1/8
75
377
5:1
1
75
477
5:1
7/8
75
623
4:1
1 1/8
75
302
4:1
1
75
382
4:1
7/8
76
499
 
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