I have been in 3 different cars fitted with 3 different makes of pedal boxs and all have been dissapointing --the problem is there is not enough space to have normal operating pedals with enough leverage to get a nice pedal operation .
If I were going to design something --it would be using pull cylinders adapting the std pedal assmebly --but I,m not .i think the better answer is to fit a bias twin cylinder arrangemnt on the std servo.
did you know the std servo gives an 8.8 or 9 to 1 increase in effort + thats on top of the mechanical linkage of the pedal ,so to get that sort of advantae on a pedal box is not possible .
so with any pedal box you will have to enjoy very ,very heavy pedal pressure before it does anything most boxs only have a 5 -6 pedal ratio,and that does not make it easy to drive fast and precise ,maybe a geared type of pedal box?
so you are then into special size piston calipers to make it work
i don,t have the answer ,but i know most will not be happy with a normal pedal box .
If you are making a race car and can dump all the dash then maybe you can find enuogh space to fit a hangint type ,whicch will be much better as you can have longer pedals .
also all the untis out there do not sit anybody with long legs ,due to space limitations again.
you need 80bar of pressure at calipers by applying 4 or 5 bar of pressure to the brake pedal to get a good feel with the pedal .
just my views on the subject -up to you if you agree or disagree.
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