sliding seatpost

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Chuckles1981
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Joined: Thu May 15, 2008 8:21 am
Location: Sydney

sliding seatpost

Postby Chuckles1981 » Tue May 20, 2008 12:36 pm

anyone have any tips advice on fixing a sliding seatpost???
when i go over hard bump it happens :x
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Trek 7.5 FX
Jamis Ranger 3.0

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LuckyPierre
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Location: Canberra, ACT

Postby LuckyPierre » Tue May 20, 2008 12:42 pm

road v off-road?
quick release v bolt?
carbon v alloy?
Litespeed Classic - 3Al/2.5V titanium tube set, Record 9-speed groupset, Open Corsa Evo CX
Alchemy Diablo - Columbus Zonal tubing, Ultegra 9-speed groupset, UltraGatorskins
Gitane Rocks T1 - U6 tubing, Deore/XT groupset, CrossMarks

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Chuckles1981
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Joined: Thu May 15, 2008 8:21 am
Location: Sydney

Postby Chuckles1981 » Tue May 20, 2008 2:27 pm

its an MTB on clamps and its alloy
NOW

Trek 7.5 FX

Jamis Ranger 3.0



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Giant Trance X1

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tallywhacker
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Location: Perth

Postby tallywhacker » Tue May 20, 2008 2:29 pm

blue loctite between the seatpost and seat tube before tightening. Leave it to dry overnight.

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Shard
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Joined: Mon Mar 31, 2008 8:52 am
Location: Melbourne

Postby Shard » Tue May 20, 2008 3:43 pm

If it's 1-2mm too small try wrapping a cut coke can (cylinder bit) around the bit being clamped, that should keep it in place.

Shard

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winona_rider
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Location: Brisbane

Postby winona_rider » Tue May 20, 2008 9:01 pm

don't tell anyone i told you this...but some packing tape once or twice around does the trick. BUT! you gotta clean it out and replace the tape every 2 or 3 weeks depending on how often you ride.
in saying this i STRESS i got sick of this pretty quick and bought a seat post 0.2 mm thicker for 10 bucks and it has been freakin awsm. werd

alchemist
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Joined: Thu May 17, 2007 6:59 pm

Postby alchemist » Tue May 20, 2008 9:28 pm

Chuckles1981 wrote:its an MTB on clamps and its alloy


Not a Scott is it?

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LuckyPierre
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Joined: Fri Jul 14, 2006 4:37 pm
Location: Canberra, ACT

Postby LuckyPierre » Thu May 22, 2008 9:34 am

The big tip underlying the responses so far is - check that you've got the right size seat post - 0.2mm makes a big difference, especially for quick release clamps.
Litespeed Classic - 3Al/2.5V titanium tube set, Record 9-speed groupset, Open Corsa Evo CX
Alchemy Diablo - Columbus Zonal tubing, Ultegra 9-speed groupset, UltraGatorskins
Gitane Rocks T1 - U6 tubing, Deore/XT groupset, CrossMarks

twowheels
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Location: Perth

Postby twowheels » Fri May 23, 2008 6:55 pm

Could be the contoured plastic shim/washer that the QR clamps onto has split, like my plastic one did. Kept retightening the thing before I realised what had happened.

I replaced mine with a metal shim/washer from an old brake assembly, the little part that make sthe brake sit "flat" on the brake bridge or fork ... hasn't slipped since.

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