Latest Weight Weenie Foolishness ti brake bolts

[Hindmost]

As I was going to sleep last night I realled the image of the all-thread used to make the brake bolt. I realized that the aluminum calipers would now pivot on the threaded portion of the shaft and thought that was not a good design decision. This morning I read the recent posts and also now see that the bending stresses are put into the threaded portion of the shaft. (It's weird the mental energy one can put into something one is not vested in.)

[unterhausen]

with proper preload and good thread form, it's no big deal to have all thread. But all thread is often not cut well.

[Mark McM]

Originally Posted by unterhausen

with proper preload and good thread form, it's no big deal to have all thread. But all thread is often not cut well.

There have been some brakes which used full threaded titanium bolts, such as the Cane Creek BR200SL (and early ultra-light single pivot brake). I've got these brakes on two bikes, one of which has been in use for over 20 years. They've performed as well as any other single pivot brake. I've not heard of any problems with the bolt on these brakes breaking. The bolt used is a standard industrial bolt, so it may used rolled threads, or at least well made cut threads.