I bought a new bike at the weekend (I know, Elev12k, I wasn't going to, but you know how it is. It stops here though.)
It has 531 tubing so the seatpost diameter should be 27.2 according to a learned chappy on Retrobike. But my new darling has a side to side internal seat post clamp area diameter of 27.2 and a front to back diameter of 27. I measured it as fairly as possible with some measuring caliper things.
If you have a good look at the below photo you will notice 2 things: There are a lot of washers on the bolt (the allen key hole is proper mashed up), and theres a tiny crimp or bulge at the bottom of the slot. Ergo, some monster has tightened the clamp more than the good lord intended.
It scrapes my new seatpost most horribly.
Whats the best way to open it out again? It feels like it is a reduced diameter all the way to the bottom of the slot, so just levering with a screwdriver will not do the trick(note paint chip at top of slot).
I have a feeling hammering in a stout peice of wood would help, but I'm concerned I'd never get it out again...
Any tips welcome.