• I decided I need gears for my winter bike, so out went the GT and to replace it I got this Trek 8500.
    It is, or at least was a pretty fancy xc bike with Shimano XT groupset etc. The bike has been ridden a lot. All the components are in quite an okay shape, but the alu/carbon seatpost was properly stuck and I had to hack it out in pieces.


    Remember to grease your seat posts, kids. Fighting with this took me 2 months of fiddling around with bikes -time, meaning approximately two evenings. There must still be some pieces of carbon fiber in the tube as I wasn't able to get a proper sized seatpost in, luckily I happened to have a proper shim to 27,2 mm.

  • The combination of carbon and aluminium must mean that you pretty much get all of the down side of both materials and pretty little of the up sides?

  • These posts were reasonably light. Also the slice of aluminium was quite thin, so it may have been more supple than a normal alu post. In this case it was also easier to hack to pieces, luckily.

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