Anyone re-bonded the seat tube insert on a carbon?

[Carbon_Kiwi]

just noticed i have a little bit of movement, and was wondering if anyone knows the best way to go about fixing it???

[Scott]

Check the files and how to here.  After it's fixed make sure the post fits snugly-my American Classic 27.2 was small so I added a shim from a beer can-good beer for an Oz-and took up the gap so that the clamp wouldn't deform the sleeve and pop the adhesion of current epoxy.

[epac]

how did that happen


                              ......peace [smiley=nod.gif]

[Carbon_Kiwi]

hey buddy,
i don't know, i just noticed it today - it's nothing major and easily fixed i'm sure  
there's just a wee tiny bit of rotational movement.
i thought it was the seatpost - but on closer inspection it was the whole thing   [smiley=worry.gif]
it rides like a dream though - beautiful  
managed to get the chain ring/bb thing sorted, but i am gonna get new rings [22,32,42 or 22,34,44] so i can pop my better/lighter/narrower ti bb back in and improve the chainline.
have had some full on stares riding it today  
anyway - how's that razor coming on  

[Oz-SUB]

Carbon Kiwi

This happened to me last summer when on a technical single track in some woods my pedal caught some high roots and tipped me downhill into a big patch of stinging nettles!  Yes I did have shorts on and short sleeved top!  Tried to get up once with the bike on top of me and fell back into the nettles!!!!  My legs and arms swelled up from the thousand or so stings.  Yes, it did hurt.

Anyway, I had knocked my saddle which started the rotational movement, which got progressivly worse.  I searched the Web to see if anyone else had had this problem, and good ol Google came up with this website (well the old one then), thats how I came to be here.

Anyway, I bit the bullet and took the sleeve out.  This is best done with the saddle and seat tube firmly clamped to the sleeve (as if for normal riding).  You can then use the saddle as the lever back and forth whilst pulling, and eventually the sleeve will come out.

I then cleaned up the sleeve and inside the carbon seat tube, and used Araldite epoxy smeared on both the sleeve and insdie the carbon.  One hour later (although I suggest leaving it for 24 hours) bonded fine with no further problems since.

Hope this gives you the confidence to go and do it.

Happy Oz riding

Oz-SUB

[numbnuts]

It's not the same bike or part, but I just rebonded my swingarm/driveside dropout on my Evo with some $3 stuff that I got from my local gas station. One of those "steel" epoxy 2 part kits. I haven't tested yet but it looks rock solid. Tomorrow I am going to go nuts with drop--offs and general riding mayhem, I'll let you know how it holds up. The key with epoxy is to ensure the surfaces are super clean, I used a paint thinner, and a little sanding helps. Also try and use a product with a long [24hr] curing time, supposed to be stronger than the 5min stuff.

[Carbon_Kiwi]

Oz-Sub,
ouch! that sounds like it was REALLY painful!  
ok - i'm gonna go to the hardware store 2day and check out the epoxy they have on sale.
then i'll take it from there  
thanks for sharing your info.
went for my 1st decent ride on her today, foresty fire-roads, she rides like a dream - and no alloy creaking noises! - yipee!!  

[Carbon_Kiwi]

ok - i've done it. it's been bonding [so far] for 18 hours...  

success!!   [smiley=nod.gif]