K2 / Proflex Riders Group
General => Tech Forum => Topic started by: Carbonman1 on August 03, 2004, 03:50:19 am
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Hey All,
after years of flawless service my Oz frame has developed a loose seat post. What repairs have worked and what hasn't? Thanks in advance.
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Had the same problem though as well as coming loose it had also cracked (same happened to sprucey's) so had a new insert made,after thoughly cleaning up the parts I reassembled using loctite 648, being a liquid you get better coverage than using an epoxy resin which tends to be pushed back out as you assemble it (it did for me when I tried it), haven't had a problem since.
Simon.
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Since mine hasn't come out yet, (just rocking a bit and creaking) I guess I should try to extract it. What type of glue did they use upon assembly? I don't want to rip any "teeth" out of it if the original was epoxy. A complete separation would have made it easier, if not more frightening.
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You will have to remove it for a proper repair,when mine was removed it didn't appear to of been epoxyed in from origional I just tried it as a repair as at the time its all I had to hand,
To remove mine I just kept lubeing it with WD40 or similar and at the same time rocking it from side to side and back and forth until it got to the point I could twist it,once I could twist it I just twisted and pulled until it came out undamaged (apart from the crack it had already developed).
Some form of soft jaws in a vice will help, gently clamp the exposed part of the insert in the soft jaws with the frame inverted and then you can rock and twist the frame giving you more leverage and area for you to work with,they do come out quite easy once they've started to move,with the loctite you'll have a permant fix in no time.
Simon.
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as i recall, and not to contradict anything said here, the seatposts were originally epoxied in - i had at one time the name and manufacture of the epoxy, including the pink epoxy used for the bb, but long since lost it with the change in computers.
if you can wiggle the post insert out, perhaps by clamping down the seatpost with the clamp tightend down, you'll be able to reinsert with a good adhesive. i'd follow simons recommendations.
we've have on this forum, dropouts come undone from the easton carbon, cleaned up, reinserted and epoxied in place - and still going strong.
i can only imagine that with the aging of our components and the use of identical adhesives, we should all be on the lookout as it may not be a matter of if, but when it will happen
just a few thoughts
OP
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I managed to remove the post completely by tightening the post clamp and giving it a good twist. After cleaning everything up I reinserted the tube.
The loctite did the trick--good as new! Thanks for the tips. Of course after what OP says, I guess I really should look over the CF interfaces.
I'm still slightly shaken after witnessing a friend's carbon spoked Spinergy front wheel fail at speed--very ugly...only scrapes, bruises and a five mile walk back. The next day my post started working loose. WTF? Fortunately, the post problem is a metal glued to metal thang; no problem with the carbon--but still....I'll be watching...
later