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Any advice on a slipping seatpost please?,its an alloy frame/post ,ive broke 3 clamps now over tightening,
its doing my head in now
thanks
Put a bit of grease on it and some sand/soil/dust/something for friction.
Thomson post?
check the internal diameter of the seat tube - vernier calipers are ideal
check the diameter of your current seat post - should be engraved or etched at the bottom
check the external diameter of the seat tube (using calipers), and the internal diameter of the seat clamp (often engraved on base or body)
they all need to match (i.e. 27.2mm seat tube needs 27.2mm seat post)
if they don't match, get the right diameter seat post and the right seat clamp
if they do match, this can be a tolerance issue with your frame, or some seat clamps are just poorly made and tend to snap over time (bolt bananas)
A quick fix can be fibre grip (carbon assembly paste), but this will only help a small problem with tolerance
You can try a shim made from something very thin like a red bull can, this often works quite well
New bike time
Check this first. If it is then it's a fairly easy fix.Thomson post?
Shim made out of beer can or similar. And also - a [url= http://amzn.to/1Vzqggj ]KCNC seat post grip[/url].
Carbon fibre assembly paste, fixed mine (Ali frame Ali post)
Them kcnc seatpost grips are available for under a fiver if you have a google.
Thanks for the replies, managed to cadge some carbon paste, so im going to give that try when i get home.
cheers