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Old 05-22-2002, 11:52 PM   #10
Scooby Specialist
Member#: 16215
Join Date: Mar 2002
Location: In a place with no laws, just "guidlines"
2002 WR WRX wagon


Originally posted by Jon Bogert
Wow, great stuff!

But, is equation 2 for the whole car? How do you account for different effective rotor diameters front and rear?
I hate you! Good question.

Yes it is for the whole car.

Use the fronts as this will have the most work to do.

Nothing is perfect, but this gives you a very good estimate.

For instance if you use larger rear tires then it's friction coefficient will be different, but it's small enough to ignore.

Also the weight of the car is total weight including any aero down force you produce at max velocity of the car and you and fuel and etc......

Just keep in mind that the MC does not effect the stopping distance, just the pedal effort and stroke.

Which means that once you get a bore diameter and then calculate the stroke from the volume requirement you can increase or decrease bore as long as you go in the other direction with stroke. Simply you can trade effort for stroke or visa versa.
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