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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 08-14-07, 07:01 AM   #1
JamesGoodman
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Jamis Sputnik Seat/Post/Bolt Question

My seat seems to be dropping slowly but surely as I ride. The bike is two weeks old.

Do I need to be much more brutal than I have been on the bolt, or do I need to replace the bolt with a better part? Or is this a question that can't be answer without looking at the bike.
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Old 08-14-07, 09:43 AM   #2
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I would try tightening it more. Maybe try tightening it on the opposite side you've been tightening.
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Old 08-14-07, 09:50 AM   #3
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get some fine grit sandpaper (500'ish) and rough up the surface of the inside of the seat-tube and seatpost where it drops into the tube slightly. That will help them grip better. Don't over tighten the bolt.

Seatpost slippage is common on a new bike, like yours.
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Old 08-14-07, 11:29 AM   #4
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Thanks much for the advice.

I will get some sandpaper this afternoon. When I removed the seatpost from the seattube in preparation, I noticed that there is a ton of thick white grease on the tube. Taking that off should help as well, I assume. I am happy to know that I should not go nuts trying to tighten it.
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Old 08-14-07, 11:49 AM   #5
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Originally Posted by JamesGoodman View Post
Thanks much for the advice.

I will get some sandpaper this afternoon. When I removed the seatpost from the seattube in preparation, I noticed that there is a ton of thick white grease on the tube. Taking that off should help as well, I assume. I am happy to know that I should not go nuts trying to tighten it.


Ya, the grease will do it. I bought a Jamis road frame in the spring and noticed the seatpost tube was greased, on a carbon frame. I thought it odd but once you clean it out it would be fine. If you still get slippage use some sandpaper.
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