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gretsch

27.0 Thomson seatpost keeps slipping in 27.0 old steel frame. don't think the grease is excessive, don't think i'm under torquing the seatpost clamp lug.

suggestions on anti-slip measures? carbon assembly paste stuff? torque harder? some sort of seatpost collar suitable for lugged frame?

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Heldring in reply to @gretsch

Are you sure the frame takes a 27? Could be that it originally was 27.2, could be due too grease/dirt buildup inside the tube or somebody clamped it too hard before you?

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gretsch in reply to @Heldring

pretty sure. 27.2 wouldn't go near it. will double check and give it all a good clean up, but assuming that isn't the issue?

it will be slipping about a cm or two over the course of 3/4 short commutes (3 miles or so each way)

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