Seat post sliding

gbsahne001

Any ideas why the seat post (CF) on the CX keeps sliding down? the post retaining collar is tightened as much as I dare bearing in mind the CF post and yet it still keeps losing it's position.

davis

You've got assembly paste in there, right?

gbsahne001

davis wrote:

You've got assembly paste in there, right?

OK. what's assembly paste?

Edit: quick google and I see a solution, thanks

DF33

Wot used to run down the leg of the unwell at school in the big hall.

davis

gbsahne wrote:

davis wrote:

You've got assembly paste in there, right?

OK. what's assembly paste?

Edit: quick google and I see a solution, thanks

The theory goes that you should get carbon-specific stuff:

http://www.wiggle.co.uk/finish-line-fiber-grip-assembly-gel-450g-tub/

The reality is that it's hugely overpriced gunk. If I recall correctly it's a grease of some sort with little particles of schmutter in to create the grip effect. Frankly that tub would last forever, which makes it less extortionate.

The Rookie

Evans do a tube that contains about 100g, can't recall what I paid.

godders1

The tube's 50g (costs about £8-9). A 450g tub would be excessive for most people. I've built a bike (CF pin, steerer and bars) and used it for a CF pin in another bike and still have loads left in my tube.

gbsahne001

Godders1 wrote:

The tube's 50g (costs about £8-9). A 450g tub would be excessive for most people. I've built a bike (CF pin, steerer and bars) and used it for a CF pin in another bike and still have loads left in my tube.

£6.25 with Parker, only downside is you need to make up a £20 order to get free shipping, but as the wife's away, that's not really an issue

team47b

Assembly paste...

DF33 wrote:

Wot used to run down the leg of the unwell at school in the big hall.

They use this? :shock:

gbsahne001

assembly paste, hasn't cured the problem I suspect the seat clamp's dead; new one ordered and we'll see if this helps.

rolf_f

Just fill the seat tube with gravel until the seat post sits at the correct height! Easy!

gbsahne001

Rolf F wrote:

Just fill the seat tube with gravel until the seat post sits at the correct height! Easy!

wonder whether expanding foam would work?

Yossie

Freakin' amateurs. Thanks for wasting his time. Gravel and expanding foam. Yeah, right.

Weld it on. Its the only answer. Or fill the frame with steel - gravel and SEF will both compress after a while.

HTH

Y

magibob

I've got a couple of jubilee clips on mine.

Wish I'd thought of using gravel, would have saved me a fortune!

Andy

mudcow007

cant you just drill through your seat tube an put a nut an bolt, if your worried about weight just use a nice titanium bolt?

problem solved

billyballs

These reply,s are class, i like a good laugh. on a serious note if it,s a quick release clamp i cured mine by putting a small amount of lube in the moving patr of the clamp , this lets you tighten the clamp up a bit more, also line up the open part of the clamp with the slot on the down tube . worked for me. as a last resort go with the gravel as sand will run out the drain hole under the bottom bracket if there is one.

gbsahne001

Fitted one of these




and in 1000miles it's not moved.