Quote:
Originally Posted by sickmint79
i don't know if one of those was another of my articles before i had the blog (it was on kinja) - in any case i am transparent and showing you the numbers and calculators i used to arrive at my conclusions, it would be interesting to read someone else's article which shows different conclusions and how they arrived at them.
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The issue I saw was using the overall diameter of the rotor. Effective diameter would be where the center of the pistons are. Short of measuring that, you could probably get very close by taking the pad height and then subtracting half plus a mm or two from the OD of the rotor.
I suppose using OD is somewhat close, in reality pushes the bias forward, because the ED on the rear, with smaller pistons and shorter pads, is actually closer to the outside of the rotor compared to the front. It would also be less accurate comparing a bbk with big rotors and smaller pistons.
An old legacy guy has a brake math spreadsheet with the effective diameters of a lot of stock brakes. I have been meaning to make some modifications to it with some aftermarket stuff and more cars.
http://www.main.experiencetherave.co.../brakemath.xls