Thread: Brake bias
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Old 6th December 2011, 17:52
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Mike

Regards the brakes.

At one stage during the build of my Cabrio I was agonising on the merits of a disc rear end over drum rear end setup. I had an interesting conversation with Pete Morris (moc bmw cabrio tech rep) on the subject.

When he put his car through SVA he found the brake bias was right on the limit, ie borderline that the rear brakes would lock up before the front. He was running standard Sierra disc all round with the standard Sierra servo which gives substatially more boost than a Metro servo.

It may be interesting to compare the specs of the dual servo to the specs of the standard Sierra servo, if the dual is giving more boost, maybe a bias would be needed when running disc all round. I gues it would be less of a problem with a drum backend. I guess the only true way to test it would be to run a car with the modified brake setup on a rolling road brake tester as used for IVA.

John
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