Originally Posted by
LarrySellerz
I ageee that the discoloration is an artifact from heating. What I disagree with is the contention that this discoloration is all over the disc and is being weared away by the rotor. It’s a very interesting Idea, but I don’t think it is happening I think the discoloration is local to that area. My gut tells me there not uniform discoloration on the rotor.
guys I would know if my saddle tilt doesnt work/is a mistake. I ride a lot, like 100 miles a week minimum just living my life on top of any recreational riding I might do. I don’t wear padded bike shorts, so it is less slippery.
Please feel free to suggest a reason, apart from being abraded off, why a piece of steel heated to the right temperature in normal air would not change color, which is such a reliable process that it has been used to color watch hands (for example) for more than 150 years.