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How can I stop the seatpost from slipping?

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How can I stop the seatpost from slipping?

Old 04-20-13, 12:15 PM
  #26  
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Mine never slipped when i did not weigh 199#, 30 years ago..
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Old 04-20-13, 12:47 PM
  #27  
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Originally Posted by dscheidt
Assumes facts not in evidence. It's the way to bet, but it's not a sure bet.
Nothing is ever a "sure" bet. Hey, I know. I'm married. LOL!

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.
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Old 10-21-22, 08:15 AM
  #28  
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Some carbon gripping parts cause steel to rust.

Originally Posted by Shimagnolo
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
I was trying to find a way whereby I didn't have to tighten seat post clamps so much fearing for frame damage on vintage frame. I tried paste and found it rusted the steel. My go-to solution is a collar or two or more to help the clamp so I don't have to tighten so much.
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Old 10-21-22, 08:22 AM
  #29  
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Some carbon gripping parts cause steel to rust.

Originally Posted by Shimagnolo
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
I was trying to find a way whereby I didn't have to tighten seat post clamps so much fearing for frame damage on vintage frame. I tried paste and found it rusted the steel. My go-to solution is a collar or two or more to help the clamp so I don't have to tighten so much.


Collar so I don't have to tighten post clamp so much. Vintage bikes to save frame at post clamp
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Old 10-21-22, 09:00 AM
  #30  
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Necro thread.
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Old 10-21-22, 11:03 AM
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Originally Posted by Inusuit
Necro thread.
Indeed. Been dormant over 9 1/2 years.

I'd guess that's probably not a record for a BF thread before being "zombied", but I really don't know.

Last edited by Hondo6; 10-21-22 at 11:10 AM.
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Old 10-21-22, 12:01 PM
  #32  
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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.
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Old 10-21-22, 12:25 PM
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My new aluminum Trek came with that on the seatpost and it appears to be working.

Originally Posted by Shimagnolo
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
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Old 10-23-22, 08:58 PM
  #34  
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Didn't notice the op date.. sorry.

Still, the info never dies..!!
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Old 10-24-22, 02:43 PM
  #35  
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Originally Posted by pakossa
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?
something ain't right here. either your seatpost is the wrong size - take a good pair of digital calipers and measure the inside diameter of your seat tube to make sure - or there is something kerfluey with your binder. may want to take it to a shop if you're 100% sure you have the correct seatpost diameter.
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