Quote:
Originally Posted by churchx
I'd really would like to find out WHAT really is causing differences between (almost same to my eye) rotors though :/
I guess, very few did comparisons between oem replacement rotors that (almost obviously) should be same so didn't bother, material same iron, vanes count & shape almost same, so what is the culprit? :/ If there would be any difference in finish, it should quickly equalize after heavy brake use/bedding imho.
Almost as if it might be worthwhile to test all available oem rotor options out there for maybe even more unexpected surprises and/or to know more what to expect of supposedly known products.
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I wouldn't be so sure that the metallurgy is identical. If you're willing to spend the time and money to test them out, please have at it. I've enough experience and played with it enough to know where I'll spend my money next time I'm replacing rotors.
Quote:
Originally Posted by strat61caster
Test methodology, without data for brake pressure and vehicle speed over the stop it's hard to prove that they were put through the same test. Ideally you'd have temperature of the brakes as well as the cooling air over the duration of the stop. You can then integrate that to roughly approximate how much energy was put into the brakes over the duration, quantify any cooling effects (maybe the breeze was blowing a different direction? Or no breeze at all on one night), and arrive at a thermal capacity for each option.
Far too many variables and not nearly enough data or delta between results to draw any strong conclusions from this test.
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And for the very reason what is required for "indisputable" proof to satisfy the critics who thinks that there is no difference between the rotors even when presented with data that says otherwise. But.., you're 100% right. There are too may variables in play. We'd need a machine to use exactly the same pedal pressure, test under the same exact ambient temps and conditions with exactly the same pad material that are ideally brand new for each test, with exact same applied force for the exact same duration of time.
Again.. I'm curious as well but not curious enough to invest the time effort and money to produce data that will satisfy everybody. It is what it is lmao