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TOPIC: Re:Why do rear rotor bolts rust? Forum Tools Post New Topic Show latest posts Rules

#1017935 Lifeguard (User) Alright everybody out of the pool. Platinum Boarder Posts: 1108 Re:Why do rear rotor bolts rust? 7 Months ago   Well see that's the weird thing as I don't have anything else rusting anywhere except the rear rotor bolts. Both front and rear rotor bolts have stainless rotors they pass through and then attach to aluminum hubs I believe. So dissimilar metals maybe but the fronts don't seem to rust at all. Heat? I bel8teve that the front rotors would get mch hotter than the rear since it is used much more at least by me anyway.   Logged     Last Edit: 2017/07/24 20:29 By Lifeguard.   The usefulness of a cup is in its emptiness-Bruce Lee   The administrator has disabled public write access. #1017951 ctkog (User) Expert Boarder Posts: 523 Re:Why do rear rotor bolts rust? 7 Months ago   Pretty sure at least my rear bolts are a different material than my fronts. I have a small rare earth magnet that slams against the rear bolt heads, but only lightly against the fronts. So something is different. But who cares just take them out clean them up and install them with a light coat of rust inhibitive grease and keep riding!!.   Logged     ---------- NOTHING STRAIGHTENS MY HEAD OUT BETTER THAN AN ENTIRELY CROOKED ROAD-----------   The administrator has disabled public write access. #1017979 G_Conway (User) ScrewBird Platinum Boarder Posts: 1121 Re:Why do rear rotor bolts rust? 7 Months ago   Just a guess, but is it possible that the hot material from the brake pads is being deposited on the screws, and that is what is causing the rust.   Logged     Gerry   The administrator has disabled public write access. #1017987 Littlebull (User) Junior Boarder Posts: 124 Re:Why do rear rotor bolts rust? 7 Months ago   Lifegaurd, Not sure how you cleaned the bolts before use. If you wire brush them with a steel brush you will get some transfer to the stainless from the brush. If you have a stainless wire brush and have used it on mild steel you will get transfer to the stainless brush. The brush would then deposit the mild steel to your stainless when used on stainless. The same thing could be possible I would think of tool steel from the tools used to tighten said stainless fasteners. There are different grades of stainless that would be more magnetic than others due to content. The post that mentioned brake dust could make sense if your front and rear pads have been made from different materials. Good luck, Littlebull   Logged     The administrator has disabled public write access.

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