I greased the crank bolts but maybe I should have used thread locker?
No, you should have used a torque wrench. Crank bolts stay tight and keep the cranks on if they are tightened properly to start with.
if they are tightened properly to start with.
And if they're not already damaged.
@Emyr started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
No, you should have used a torque wrench. Crank bolts stay tight and keep the cranks on if they are tightened properly to start with.