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Seat post clamp cycle life

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Seat post clamp cycle life

Old 05-30-10, 10:52 AM
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Seat post clamp cycle life

I have a home made rack that I use to transport my bike inside my Legacy wagon. It only fits if I take the seat off. I wonder if there is a limit to how many times you can loosen and tighten a seatpost clamp before you get some sort of metal fatigue at the clamp area the frame. Forever? I like using this but if it is going to ruin my new frame, I will buy a roof rack.
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Old 05-30-10, 11:00 AM
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lets just say they last a long time. they are only 15-20 bucks if you break it anyways
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Old 05-30-10, 11:09 AM
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Warning: using your bike in any way will put stress on the frame. If you're concerned about damaging your bike, perhaps you're better off hanging it on the wall and explaining that it's an art piece.

You are putting more stress on your seat tube and clamp when you are riding it, unless you are torquing your seat clamp shut with an impact wrench. Chances are, you're going to have something else fail before that part of your frame does, IF it does, or by that time you'll be in the market for a new bike anyways.

Last edited by coffeecake; 05-30-10 at 11:25 AM. Reason: added reassurance
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Old 05-30-10, 11:11 AM
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The most likely part to break is the bolt and they are cheap and easy to replace. I assume your bike has welded-on ears at the top of the seat tube. If so and you haven't tightened the bolt so tight as to distort these ears they should tolerate many removals/reinstallations. If you have a removable seatpost clamp band, you are golden as they are very easy to replace.
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