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Seatpost clamps?

Old 10-04-16, 06:45 AM
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Seatpost clamps?

The bolt in my seatbolt clamp is getting all worn out, to the point I can't tighten it enough. I know I can get a new bolt but I may just get a better, more robust clamp while I'm at it. This is for a hybrid/weekend warrior Fuji Traverse. The clamp says 4N.m and the inside diameter of my seat tube is 31.6.

Any favorites out there I should be targeting or ones to avoid?

Thanks for any input.
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Old 10-04-16, 06:49 AM
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4N.m is the torque you should tighten the clamp bolt to. The ID of the seat tube is immaterial, the OD is the dimension you must match. Surly sells good stainless steel seat post clamps.
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Old 10-04-16, 06:56 AM
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Thanks again for your excellent advice HillRider,

I'm not sure on the OD of the post. I guess I'll measure it. As for the torque, I've been hand tightening it, but not over tight. I'll start torquing it to spec with my new one.

Edit: It looks like I'll need a 34.9mm collar.

Last edited by MrWasabi; 10-04-16 at 07:06 AM.
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Old 10-04-16, 09:02 AM
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Seat post matches seat tube ID ... Band clamp matches seat tube OD.
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Old 10-04-16, 09:55 AM
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I like Surly constrictor seatpost clamps.
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Old 10-04-16, 10:06 AM
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Thanks.

I can't find the Surly in 34.9mm. I don't think they make them in that size. Any others to consider?
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Old 10-04-16, 10:26 AM
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Originally Posted by MrWasabi
Thanks.

I can't find the Surly in 34.9mm. I don't think they make them in that size. Any others to consider?
Salsa?
Really just about anything will work. I prefer the versions with a nut that pivots to put less stress on the clamp.

Are you looking for QR or non-QR?

Also, you may want to consider using assembly paste to add some friction.
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Old 10-04-16, 10:31 AM
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Thanks, I'll check the Salsa out. I'd prefer non-QR as once I get my seat in place, I don't see me adjusting it. Are QR clamps generally less reliable? I know that theft can be an issue.
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Old 10-04-16, 12:25 PM
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Salsa and Surly are 2 brands, both owned by QBP, made in Taiwan, For them.

theft a concern ? Pitlock! https://www.pitlock.de/en/shop/pitlo...erschluss.html

Plus ; https://www.pitlock.de/en/shop/quick...en/set-06.html German company.





'/,

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Old 10-04-16, 12:31 PM
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Thanks Bob,

Those Pitlocks look good but I'm not too worried about seat/post theft if I go with the non QR clamp.
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Old 10-04-16, 12:48 PM
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Universal cycles has a Big inventory and will ship https://www.universalcycles.com/shop...p?category=167

Salsa Lip lock uses a round barrel-nut so it stays in alignment with the bolt as its tightened .

https://www.universalcycles.com/shop...3&category=167

Very Many Bike Shops have wholesale QBP accounts for small parts , make friends with your LBS.




'/,
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Old 10-04-16, 02:18 PM
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Originally Posted by MrWasabi
Thanks, I'll check the Salsa out. I'd prefer non-QR as once I get my seat in place, I don't see me adjusting it. Are QR clamps generally less reliable? I know that theft can be an issue.
Although a seat post was a VERY tight fit in an old MTB frame after I had it powder coated, it would still slip down a bit when I put a seat binder bolt on instead of a QR. A QR has a more direct clamp action, so I had to go back to that. I was using the bike as a commuter and went with Hal Ruzal's method (look him up on YouTube) of a chunk of old chain to secure the seat.
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Old 10-05-16, 08:52 PM
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Update on my clamp quest. I went with the Box Helix fixed clamp. It's light, not obnoxiously big and has titanium hardware. The QR version is cool but again I don't think it would be better for my needs over the fixed.

Box Helix Fixed Seat Post Clamp > Components > Seatposts > Seatpost Clamps | Jenson USA
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