Noticed play in the cranks. Seems to mainly come from the bottom bracket end caps/nuts and the threads on the frame.
Wondering what’s causing this? Is it as simple as a loose bracket ? Or could my threads be stripped?
Are my bottom bracket threads stripped?
byu/RuntheFlats inbikewrench
by RuntheFlats
5 Comments
It’s probably just loose. But there’s no way to tell without trying to tighten the BB or inspecting the threads.
Nothing wrong with the threads there. Bearings are worn out. Replace the BB
Before you ride the bike again, pull the BB and clean and grease the shell, then torque the BB back in properly and reinstall the cranks. The threads are likely still viable for now, but on aluminum shells you don’t want to play games with this.
i will check for any cracks in the frame around the BB area.
It might be a cracked bottom bracket cup. In that case it should certainly be replaced. It could be difficult to remove it if the splines for the tool are damaged.