Michigan Mountain Biking Association
Thomson sent me a replacement post that was more toward nominal diameter and my slipping problems went away
meangreen wrote:Thomson sent me a replacement post that was more toward nominal diameter and my slipping problems went away
But if the post measures OK, I would go with a beefier clamp like a salsa lip-lock/thompson etc.
Kampfire wrote:I'll take home my calipers from work and measure. The tolerance from Thomson's website say +0.0/-0.03mm. Thats crazy tight!
I had a Niner RDO Carbon seatpost on it when I first bought the bike. It lasted all of about 3 months and cracked right at the seat clamp. It slipped and creaked as well.
Kampfire wrote:I have the 400mm seatpost. I'll double check that as well. I'm thinking I have about 50mm left before the max line.
Kampfire wrote:OK, here are the measurements my 31.6mm seat post. I did 3 sets of measurements. Top about 50mm below the saddle. At the clamp point and at the base of the post. X is parallel with the frame and Y is parallel with the handlebar.
Top: X: 31.67mm Y:31.68mm
Clamp: X: 31.30mm Y: 32.01mm
Bottom: X: 31.52mm Y: 31.56mm
*Measurements taken with Mitutoyo digital caliper.
So obviously the clamp has ovaled the seatpost. Looking at the bottom measurement it may appear the seatpost was undersized from the factory?
Users browsing this forum: Bing [Bot] and 1 guest