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Seatpost Clamp Replacement

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Seatpost Clamp Replacement

Old 11-21-15, 07:38 PM
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kmcrawford111
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Seatpost Clamp Replacement

Hello everyone,

The split-style Seatpost clamp on my Specialized Roubaix broke in one section a few months ago. I have a Salsa clamp to replace it (as recommended by the machanic who built the bike), which is 32.0 mm and lip-lock type; the original is 32.6 which seems to be unique to Specialized and hard to find, and problematic due to the split design. I can get the Salsa to fit on the frame, but only after spreading it open slightly. Unfortunately the Seatpost doesn't fit with the clamp on - at least not easily.

My main concern is damaging the frame. Is it a bad idea to use this clamp? The idea I have to possibly allow the Salsa clamp to work was to sand down the seatpost just a little. I weigh 180 lbs., and intend to keep the bike long-term. I also thought sanding the clamp down (on the inside) may get the job done. Are these bad ideas? I'd be OK with using an original part, but I can't find one anywhere, and it may break like the first one (from normal use) anyway. The bike is used heavily.

Advice? Thank you very much.
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Old 11-21-15, 08:00 PM
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A few thoughts- there are many versions Roubaixs over the years. Some indication to which you have... The first try is to get the selling shop get another. Seat clamps often have some slop to their dimensions. Carbon frames can need more specific camps then metal fames use, but since we don't yet know the actual bike yet... Andy.
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Old 11-21-15, 08:17 PM
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kmcrawford111
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Originally Posted by Andrew R Stewart View Post
A few thoughts- there are many versions Roubaixs over the years. Some indication to which you have... The first try is to get the selling shop get another. Seat clamps often have some slop to their dimensions. Carbon frames can need more specific camps then metal fames use, but since we don't yet know the actual bike yet... Andy.
Thank you sir. My Roubaix is a 2013 Elite model. I believe it has the "SL2" frame, Carbon 8R. The Seatpost is also carbon. Unfortunately the shop no longer exists.
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Old 11-21-15, 09:52 PM
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Originally Posted by kmcrawford111 View Post
Thank you sir. My Roubaix is a 2013 Elite model. I believe it has the "SL2" frame, Carbon 8R. The Seatpost is also carbon. Unfortunately the shop no longer exists.
Have you tried to contact Specialized directly? They should be able to direct you to a source for the clamp or even send you one at no charge. This link is to Specialized's customer service either by e-mail or phone:

Specialized Bicycle Components
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Old 11-22-15, 07:14 AM
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Originally Posted by kmcrawford111 View Post
The idea I have to possibly allow the Salsa clamp to work was to sand down the seatpost just a little.
I would suggest opening up the clamp, rather than sanding down the post. There will be less material to remove from the clamp, and clamping down on a too-small post is likely to damage the frame. Shimming a larger clamp would also work but be less elegant. The suggestion to contact the manufacturer is the best approach.

Did you try a Web search? This Seatpost Clamp Ultralight for Bikes was the first hit on "32.6 seatpost clamp".
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Old 11-22-15, 11:42 AM
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If the clamp Band is a separate part why not get a replacement from Your Specialized bike brand dealer ?
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