Raptor, my apologies, I did think it was BPA that posted the study not you.
Do you have the paper that you could send me, because I'm not spending $28 to read it.
I said the 110 mph stops at every mile was outside of the realm spirited street driving, not that it wasn't relevant in the study, the study said they saw better performance from the cross-drilled after several stops into doing a test of stopping from 110mph every mile. That I think is reasonable to consider outside of the realm of spirited street driving.
I found a synopsis and the synopsis brings up a lot to call it into question. Not to mention they used smaller blank rotors than they did cross-drilled. They repeated again and again that blank disc performed better at lower speeds, despite being smaller than the cross-drilled and the only high speeds the described were the GM abuse test of 110 mph to a stop and they repeated it every mile, then they saw better performance from the cross drilled, but only when they were past several of these stops every mile? There were no tow tests in the study, perhaps there was and the synopsis just omitted it?
So the synopsis is not the study, you want to send it to me, then I'll read it.
I've seen many informed engineering opinions stating why cross-drilled rotors are not better than the blank on the street, that had sound reasoning.
So that makes it my opinion. But a study I can NOT read, that makes vague claims as to its conclusions, does not convince me. No not because I know better than the engineer that conducted the study, yes, because I can't see the data, the test conditions and test methods, and just being told vaguely what the conclusions are.
I have yet to see someone do an independent test with publish results, they may be out there, and like I said, its been more than a few years since I have even looked for one, that compares blank and cross-drilled rotors under the exact same conditions. I'm not convinced, yes that's my opinion.
I wouldn't have accepted Helicopter Test results like that, of course I wouldn't have had to pay to get the study, but I also would have raised a flag when the test method and conditions stated they were going to reduce size one item to be compared, when the size has a direct affect on performance.
I did like the terms in the synopsis, which I assume are also in the study, I had forgotten the term blank rotors, to often we call blank rotors, solid rotors. But we also call none ventilated rotors, solid rotors. Solid rotors seem more applicable to me to none ventilated rotors, cause they are a solid disc of iron/mild steel. When we compare cross-drilled to none-cross drilled we often call them solid rotors, but they're ventilated, meaning they are not solid discs. I do like the use of the term blank rotors for non-crossdrilled ventilated rotors, it at least removes some of the confusion.