Quote:
Originally Posted by strat61caster
Not really, you'd just need accurate data to eliminate the variables you can't control and focus on the physics of what's actually happening: kinetic energy to heat, brake pressure would have just been a nice to have to verify consistency and in hindsight not terribly relevant.
Speed, temperature over time at a couple different locations and some hand wavey math would probably get the job done pretty well and bore 95% of the readers to death. :P
I mostly posted that to try and calm down @ churchx your data is totally reasonable and I'm glad you did it. As always people will draw what conclusions they will.
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I dont think he questioned the testing methods or results, but rather why there is a difference in the results between something that is supposedly the same lumps of metal and should have no difference in performance.
While the minor difference between the 100-0 test may or may not be explained away by the lack of precise control of the pressure I put on the brake pedal, and as similar as these rotors seem to be there are differences that don't seem like they'd be a big deal. There may be things about them different that is worth considering. One had anti-rust coating, the other doesn't. The castings are very similar but definitely not identical. The base metal used is probably not from the same foundry and there's probably differences in the composition of the metal. All of these things may contribute to the heat retention or dissipation characteristics.
I'm not willing to invest any more time to investigate further than I've already. If someone else would like to do so I would be glad. Otherwise... "it is what it is.. "
