So I have this 70s road bike that I'm converting to a commuter. It had old Weinmann center-pulls on them and while they look awesome, they're pretty bendy. I ordered these long reach Zitto calipers from AliExpress and they came with the new recessed mount style. I have no problem at all drilling the front hole in the fork bigger but the rear situation is kinda weird. This frame doesn't have a tube as a rear brake mount but rather some sheet metal. The old calipers had grooves on the mounting point, which interlocked with the grooves on the flat mount. There's nothing on the new brake types that increases the friction, so I worry that the calipers can turn left and right and eventually get loose.
Looking at the rear brake mount on the frame, I can see there are two other holes above the brake mount hole. I guess I could 3D print/ machine/macguyver a part that interlocks with the stars and prevents the brake from turning, but that seems sketchy as well.
Let's hear your ideas 🙂
by Intelligent_Judge407
4 Comments
Yes, but I would replace the nut with a regular hex nut.
You could use star washers, those are commonly used to prevent things from rotating.
Regarding the Weinmann calipers, did you consider replacing the pads? They should be good enough for a commuter, might just need new pads.
wait, is this how i am supposed to clamp by bike on my stand? i clamp to the seatpost..
edit: grammar
The whole caliper pivots at the bolt that holds it on, right? There shouldn’t be much torsional force on it from the caliper during operation.Â
As long as the bolt is done up to spec I’m not worried about it coming loose. Ride it for a while and check it if you’re worried.
I am pretty sure I would feel the caliper coming loose if it happened, due to unexpected brake feel/clunk on braking.Â