vw addict

Very confused here, sick of the punishment of a aluminum seatpost in my CAAD 8 so I went out to the garage this morning to change it out. I have 2 other 27.2 carbon posts from other frames so i decided to stick one in. Neither will fit, I mean they go in, but not without A LOT of effort, and I can't get either of them in farther than a couple cm. I slid the carbon wrapped aluminum post back in, it goes in fairly easily, does take a tiny bit of pressure. What is going on here? I cleaned out the seattube before trying, could the carbon posts be slightly swollen from the high humidity here?

U.V.

your sure your frame isn't 27.0 ?

vw addict

Positive, the post that came out was 27.2. Also that would make it the only 27.0 seattube CAAD8 frame that Cannondale ever made.

vw addict

anyone have some advice?

bradtx

vw addict, While I don't buy into the humidity idea, it's still a possibility. Put one of the carbon seatposts into the freezer over night and see how that goes... the reverse of heating a ring gear to fit a carrier.

Brad

vw addict

only problem is I don't want to it to swell back up and get stuck in the frame.

U.V.

so you've measured both?

Nick Bain

my shot-in-the-dark guess is that some of the resin material came off the original seat post (if it is carbon wrapped like mine) through electrolosis and bonded to the inside of the frame.