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Ok so after reading through this whole thread I am still a little confused as to what the actual equations are used for. I know how to get the answers but why? Am I using those to get the figures for the stock setup compared to proposed setup? I am just unsure. In particular the purpose of the area of a circle and effective radius of a rotor? I did the math for both stock and proposed. What does it mean if the stock are of a circle is 6.78inches and the propsed is 7.06inches? Same with the Effective radius? Stock is 5.07 and proposed is 6.23. I just don't know. Also are there any braking books out there that are a must read? I am in Kuwait right now and will be returning back to the states within the next 2 weeks so if there are any recommended readings out there please share.
Go here, read it all, and use the excel:
http://www.pirate4x4.com/tech/billavista/Brakes/
The purpose of the math is to determine how much braking force you need and what balance you need. The usable brake torque is determined how much grip your tires have with the road surface (coefficient of friction between tires and surface). You can calculate the force needed by the caliper, and the master cylinder needed to produce that force. The diameter of the rotor determines the leverage.
The brake bias needed changes through the 'curve'. Assuming a 54/46 (f/r) weight bias when static in my duster, a .1 G braking even will require very close to a 55/45 ideal bias. It will change, ending up at a 75/25 ideal bias at a 1.3 G braking event. You need to calculate weight transfer at different G braking events.
Does that help?
-'02 Dodge Viper Ex-World Challenge racecar
-'73 Duster, 6.1 based 392 hilborn hemi, tko600, full floater rear 9", Hellwig custom bars, viper brakes, built for road course
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