I've had that problem with several frames, and I have used either blue
Loctite or the fiber gel developed for carbon fiber components, and
both products stopped the slipping, at least with careful tightening
of the sp collars.
On one frame with a seatpost collar instead of integrated sp clamp, I
replaced the first rather delicate clamp with a sturdier one, which
let me clamp the post with a bit more, and it turns out sufficient,
force.
I've also found that some seatposts marked as having the same diameter
are micrometrically smaller than others, enough to cause slipping in
some frames.
On Thu, Sep 9, 2021 at 1:40 PM Alex K <
ack...@gmail.com> wrote:
>
> Anybody else have issues with their seat post slipping on their Clem H or any other Rivs? This is driving me crazy. I am infatuated with this bike. Favorite ride of all time. I have a perfect 30 mile SF-Marin Headlands-SF loop that keeps me sane. What is driving me insane however is that my seat post slips down about 1-1.5 inches every time I ride this ride, which involves quite a lot of fire trail. I have cleaned the inside of the seat tube, I have applied friction grease, I changed the seat bolt and greased and regressed it. I have heard that maybe a Coke can might work as a shim, but I'd rather resolve the issue without hodging and podging. Any thoughts? Advice? Commiseration? Thanks all. I've ridden on a Kalloy and a Thomson seat post, and it doesn't matter which seat post I use, there is slippage.
> Alex
>
-----------------------------------------------------------------------
Patrick Moore
Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum