SEATPOST RANT!!! Don't buy Token posts!!!
If your old post was seized in your frame are you sure there’s not some sort of corrosion inside the seat tube that stopping the new post going in properly?
Yeah there was but pretty sure it was all taken out of there, I’m not the one that did the job but I know the guys in my lbs well and trust them, they said they took loads of gunk and rust out. Its not a huge difference in diameter but still makes a difference!Posted 4 years agobungalisticSubscriber
Have you measured both your seat tube and post to make sure they are as described (both 27.2mm) it could be that the frame is wrong or both are just marginally out by a fraction.
I have a Thomson seat post (31.6mm) that fits fine in one frame but is too loose to fully tighten in another frame, both said to have 31.6mm seat tubes.Posted 4 years ago
have you actually measured the post with a micrometer?
The guys I know well in my bike shop measured the new post which is now stuck in the frame, and said the new one was 27.25. The one that came out was 27.2, haven’t measured the diameter of the inside of the frame to be sure but it is a right pain anyway! I just hate bikes sometimes 🙁 .
Aaaaaaand breath. Have you spoke to CRC?
Just did :wink:.. and posted a poor review.
Have they actually reamed the frame back to 27.2, or just tried to clean it out the oxidation?
Cleaned it out I think.Posted 4 years ago
Bottom line everyone, do not buy the Token carbon seatpost from CRC!! After much effort and help from my lbs, my old post that was seized in the frame eventually agreed to come out. I had ordered the Token one to replace it, got in in a couple of inches to realize it was 27.25 and NOT 27.2!!!! AAAARRRGH!!!! 👿 . So know the lads at the lbs will probably end up breaking the post in the process of getting it out, so that 40 quid or so down the drain and I highly doubt CRC will care at all 🙁 .. even though its an inferior product. Well Ive learnt my lesson to not buy cheap carbon posts now anyway…Posted 4 years agostumpy01Member
warton – Member
As others have said 0.5 of a mm on the post will make no difference. Your old, rusty, corroded frame is the issue.
0.05mm not 0.5mm, but yes it should make sweet FA difference. Manufacturing tolerances on it would probably be a fair bit larger than +/-50 microns.
This 0.05mm being fretted over is about the minimum diameter you will find for a human hair……perhaps the bike shop got one wedged between the seatpost & the tube while trying to install it…?Posted 4 years ago
Actually, I have two 27.0 frames that both take a 27.2 seat post. Probably a comination of slightly too big seat tube with slightly undersized seat post.
The point though is that seat post/tube measurements are far from precise and again .05mm will not be the cause of the problem.
OP’s gone very quiet though, I notice…Posted 4 years ago
Mitutoyo 536-221 Vernier Caliper, Offset Jaw, 0-150mm Range, +/-0.05mm Accuracy, 0.05mm Resolution
Whatever the answer on these is +/- 0.05mm.
For it to be exactly 27.25mm you have to let the cat out of the box I think.Posted 4 years ago
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