

So i was adjusting the lenght between the seat and bars. Once i was happy with the distance, i went on to tighten the bolt, so the angle and height of the seat stay fixed, but no matter how much i thightened it, it enventually would loosen again and keep moving. Has anyone else encountered this problem? The seatpost is from a 2010 (i think)
Stumpjumper comp hardtail
by Professional-Hour229
4 Comments
Sorry for bad English
Sounds like you’ve stripped the thread, would explain why the bolt is going tight then loose. You’d need a new bolt/nut
Take the bolt out and look at the threads, If they’re folded over or missing its time for a new bolt.
I’m not a huge fan of these type as they can be fiddly. I prefer the two bolt type.
The seatpost most likely has the correct torque for that bolt written on the seatpost. Or you’ll need to look it up. Either way, find out what that torque value is and use a torque wrench to achieve that amount of torque. If it doesn’t hold after that, something is damaged.