Had this a few times now..... is there a cure ???
what have others done....?
Bike Forum
[closed]
seatpost slippage ?
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Posted 1 year ago #
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I swapped the seat clamp for a cheap brand-x one from CRC.
Posted 1 year ago # -
if it is shiny black it will stop when the black stuff wears off.
Hope qr by any chance?Posted 1 year ago # -
is your seat clamp Hope by any chance. i have had this with several hope seatclamps and once swapped for something that you can actually tighten the seatpost doesnt move!
Posted 1 year ago # -
Posted 1 year ago #
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carbon grip stopped mine, thomson post ally frame
Posted 1 year ago # -
not a hope seat clamp but a gt clamp
as it happens the hope clamp on my other bike is great no probs at all
Posted 1 year ago # -
Salsa clamps are the only ones that work for me.
Posted 1 year ago # -
mine was (is) a hope
Posted 1 year ago # -
Had an Avalanche with the same problem last week, was able to fit a 27.4 post in the frame so it was obviously a bit loose to be gripping properly, also found the plastic bushing in the GT qr had worn away leading to extra lever friction when trying to clamp.
Posted 1 year ago # -
does the carbon stuff work in steel frames ? ( my Thomson post is a bit prone to slipping, not on a qr, bolt up, but I have to set the bolt so tight I worry about stripping it)
Posted 1 year ago # -
I had the same prob, changed to a Spank seat clamp and no more slipping.
Posted 1 year ago # -
http://www.effettomariposa.com/carbogrip_en.html
Effeto claim that:
It is basically a special high-molecular weight silicone resin that, sprayed on a bicycle part before assembling it, polymerizes (in a time ranging from 3 to 5 minutes) into a grippy surface with the following characteristics:
prevents part slippage and the dangerous, normal reaction when a seatpost or handlebar slip at the recommended torque value: overtorqueing the bolts!Posted 1 year ago # -
I had it with the terrible Bontrager clamp that came on my Trek 8k, and then with the Hope QR that I replaced it with - now I have a Hope Bolt Clamp and it doesn't slip at all. I get the impression that the Hope bolted clamp could crush the seattube and the seatpost if I kept tightening it.
Posted 1 year ago # -
so whats the thoughts on whether the carbon stuff will work with a Thomson post in a steel frame ? I can't see why not, but don't want to splash a tenner if it won't...
cheers
Posted 1 year ago # -
The carbon grease made mine a little better(thomson in ally with hope qr), changing from hope qr to hope non qr solved it.
Posted 1 year ago # -
Thomson seat post is my cure. I bought a second hand singlespeed the other year with one and it was great. Now I have a Thomson on every bike, as other seatposts just slip or bend.
With a Thomson in my hardtail I rode 5 days with a big rucksack and a seatpost mount rack across the Cairngorms and the post didn't move a mm. Literally, as I had marked it with a pen at the idea height. Don't need to do up the clamp so tight you have to knock it open again with a large rock, either.
A tiny bit of grease in the frame when it's new and then immediately wipe it all out again.
Posted 1 year ago # -
just applied some carbon grease, so will see how it goes. post certainly felt tighter going in and the bolt was creaking when nipping up, so here's hoping -)
(Thomson post in steel frame with bolt up clamp)
Posted 1 year ago # -
Unlike Scootash, the Thomson I had just would not stay in the right place and I was glad to see the back of it. The Ritchey one I have now is fine now the gloss finish has worn off.
Posted 1 year ago #
Topic Closed
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