How can I stop the seatpost from slipping?
#27
Senior Member
Join Date: Jun 2011
Location: Sunnyvale, California
Posts: 1,180
Bikes: Bridgestone RB-1, 600, T700, MB-6 w/ Dirt Drops, MB-Zip, Bianchi Limited, Nashbar Hounder
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
But it's the 99+% bet based on what the OP posted, especially if we're talking steel frame, aluminum post. How conventional can we get for standards? And I don't recall ever dealing with any steel frame/aluminum post issues except for wrong diameter posts ever. And slippage was never a common issue with factory bikes until CF frames. Statistically, a very good bet.
There are good practices for analyzing why a post doesn't stay put in a conventional situation. Shops all have the tools and hopefully train their mechanics to follow a checklist so they don't mis-diagnose the problem.
#28
Junior Member
Some carbon gripping parts cause steel to rust.
I use this on metal posts & frames, even though it is advertised for CF parts.
It has a gritty component that improves the friction between parts so you don't need to overtighten the clamp bolt.
And yes, I would wipe out the framesaver in the area of the clamp.
https://www.tacx.com/en/products/tool...embly-compound
It has a gritty component that improves the friction between parts so you don't need to overtighten the clamp bolt.
And yes, I would wipe out the framesaver in the area of the clamp.
https://www.tacx.com/en/products/tool...embly-compound
#29
Junior Member
Some carbon gripping parts cause steel to rust.
I use this on metal posts & frames, even though it is advertised for CF parts.
It has a gritty component that improves the friction between parts so you don't need to overtighten the clamp bolt.
And yes, I would wipe out the framesaver in the area of the clamp.
https://www.tacx.com/en/products/tool...embly-compound
It has a gritty component that improves the friction between parts so you don't need to overtighten the clamp bolt.
And yes, I would wipe out the framesaver in the area of the clamp.
https://www.tacx.com/en/products/tool...embly-compound

Collar so I don't have to tighten post clamp so much. Vintage bikes to save frame at post clamp

#31
Senior Member
#32
Senior Member
Join Date: May 2008
Location: Zang's Spur, CO
Posts: 9,060
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 3068 Post(s)
Liked 4,530 Times
in
2,304 Posts
And funniest part is that my ancient post he quoted is so old that I don't even use that method anymore.
I have long since switched to using a double seatpost clamp which accomplishes the same thing as adding a single clamp above it.
I have long since switched to using a double seatpost clamp which accomplishes the same thing as adding a single clamp above it.
#33
Full Member
Join Date: Jul 2015
Location: Chicago
Posts: 275
Bikes: nothing to brag about
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 118 Post(s)
Liked 191 Times
in
111 Posts
My new aluminum Trek came with that on the seatpost and it appears to be working.
I use this on metal posts & frames, even though it is advertised for CF parts.It has a gritty component that improves the friction between parts so you don't need to overtighten the clamp bolt.
And yes, I would wipe out the framesaver in the area of the clamp.
https://www.tacx.com/en/products/tool...embly-compound
And yes, I would wipe out the framesaver in the area of the clamp.
https://www.tacx.com/en/products/tool...embly-compound
#34
Junior Member
Didn't notice the op date.. sorry.
Still, the info never dies..!!
#35
Full Member
Have a steel MTB frame, aluminum post (26.8). Even when I tighten the thing as hard as possible -- yes, I know you're not supposed to do that! -- it still slips. (I put "frame saver" in it before building it up . . . could that have anything to do with it?) I'm thinking perhaps spraying something in the seat tube, or widening that gap in the seat tube with a file. Would either of those work? Or is there something better to try?
Thread
Thread Starter
Forum
Replies
Last Post
Regulatori
Singlespeed & Fixed Gear
1
10-14-15 04:15 AM
Peyote
Bicycle Mechanics
21
07-29-12 02:40 PM