Bianchi carbon seatpost...stuck...KIN ELLL !!!!!
Beware everyone out there, i had it out last year, all seemed fine...6 months later, not a chance of it moving.
Ive been soaking it with WD for a couple weeks now, no joy.
Ive been as brutal as i can be by hand, no joy.
Took it to work today and upended the bike, clamped the top of the seatpost in a large vice....and pull, swing, lever, twist.
Nothing for 5 minutes, not a squeek. Then there was a crack, then the sound of two components jarring together like a machine gun. Another 10 minutes of levering (seriously, 10 minutes is a long time) and it so slowly started to come.
Once out, a look down the seat tube and you can see a scab of corrosion just below the clamp slot. Scraped it out and its that white furry stuff. Drill, slotted rod and some emery tape and 'reamed' it all out.
Copious amounts of coppaslip applied, now re-assembled.
Having drilled the downtube boss the other night, now ive got to tap it out to 5mm. I have taps, but no way of getting it securely held to drive it in ( because of the space, or lack of it). Normal tap wrench is too big.
1/4 drive 4.5mm socket and extension, ground the square base of the tap gently away until it sat securely in the socket...bobs yer uncle...boss now tapped out.
Cranks off, chainrings removed and thoroughly cleaned..
All done today while at work...well if ive got to be there (oh and copious amounts of tea drank as well)