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use alien(7 posts)

use aliencollinsc
Mar 31, 2002 6:07 PM
I read the reviews and there seems to be a lot of mention of the use alien carbon post slipping down the tube. can anyone comment on this?

there is also one story of what sounds like a fairly catastrophic failure, what are your experiences with it holding up to abuse? im not a heavy guy at 150lbs, so i cant imagine id hurt it, but i'd like to know what you think about its durability.


(if the reviews are bad, anyone know where to get a 250mm Thomson cheap?)
save humanSpirito di Finocchio
Mar 31, 2002 6:30 PM
;-) Nm
re: use alienJohnG
Mar 31, 2002 6:49 PM
I've been using an alien on a LOOK frame for about 8 months now. I had some slight problem with slipage initially but none lately.

If you're worried about failure than I'd recommend the AC two piece seat post. Best damn design out there bar none.

re: use aliengwilliams
Apr 1, 2002 4:25 AM
I have been using one for about 6 months now with no problem with slipping. I weigh between 170-180 lbs and do not think I will have any problem with durability. The only problem I see is with the heads of the clamp bolts, these thing are so delicate that if you have to take the seat off a couple of times I don't see how you could avoid stripping these bolt heads. I emailed them and got a couple of extra bolts in case the ones that come with it strip.

Mine is fine after 1 year...biknben
Apr 1, 2002 7:27 AM
No slipping in my C'Dale frame. No problems at all.

My LBS drilled USE about the delicate looking bolts. USE told him that the bolts are not weight bearing and are subjected to only a fraction of the forces a typical seatpost clamp bolt might be subjected to. The clamp pieces are withstanding all the forces. Therefore they are able to use much smaller bolts.

I was intrigued when I installed the post but have nothing but positive things to say.

To the poster above that ordered extra bolts: Resist the urge to overtighten the bolts. If you're really crankin those thing you may damage the clamp or your saddle rails. The bolts may not seem tight, but that saddles not going anywhere. When I first installed the post I cranked those bolts down to what I thought was appropriate. After adjusting the seat angle a couple times I realized the clamp is much tighter than the bolts seemed to indicate.
re: use alienJekyll
Apr 1, 2002 7:39 AM
I've had mine for a year with no problems. The only thing I hate about the post is the clamp. Its not that it does not work rather that its a pain in the ass to adjust.
You should follow the installation instructions for the clamp and not over tighten the bolts.
I think USE says that the bolts should stick out about an 1/8th from the front of the clamp. I would guess that given the amount of mechanical advantage that can be applied you could pretty easily over tighten and snap them.
re: use alienJimP
Apr 1, 2002 1:13 PM
I have a 25.0mm USE carbon post that doesn't slip. The CSC-Tiscali pro team rode with the 25.0mm carbon posts last year with their Look frames without any failures. The slipping issues may be with the installation or the type of clamp used. Most frames will require a shim to fit and if that isn't the right size, you will have a slipping issue. I have my seatpost installed in an Aegis frame which has a 26.8mm seattube with an internal wedge clamp. This works well with the shim since the wedge now presses on the aluminum shim instead of the carbon seatpost.