Braking Pedal Forces

[Superfumi]

Hi,

Just interested know what sort of pedal force people are designing with for lockup to occur. Books I have read suggest a pedal force of about 450 N corresponding to a 1g stop. But these are for road cars, I cant find any figures for race cars, I assume you would exert a larger force when racing. Also, what maximum tyre-road coefficient of friction can I expect out of a set of Hoosier R-25's?

Cheers

[Superfumi]

Hi,

Just interested know what sort of pedal force people are designing with for lockup to occur. Books I have read suggest a pedal force of about 450 N corresponding to a 1g stop. But these are for road cars, I cant find any figures for race cars, I assume you would exert a larger force when racing. Also, what maximum tyre-road coefficient of friction can I expect out of a set of Hoosier R-25's?

Cheers

[Marc Jaxa-Rozen]

Hi-

Check out the mailing list archive (http://www.escribe.com/automotive/misc/formulasae/), there were a few interesting discussions about this in the past.

About 100 pounds per G seems to be in the ballpark.