Originally Posted by
terrymorse
Years ago, I did some thermal testing of white vs black helmets under simulated sunlight.
With air moving at 5mph, the white helmet was 1.5ºF above ambient.
Under the same conditions, the black helmet was 2.5ºF above ambient.
Conclusion: As long as the air is moving even slightly, the white-black temperature difference is not significant.
Doesn't your test show the black helmet 66% hotter than the white one? That seems significant...
I mostly wear white shoes, and they are cooler than black, IMO, but any benefit is less than other considerations i.e. fit, style, etc.. Black shorts are clearly hotter, but I won't be wearing white ones for a couple of reasons.