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DMR make hinged clamps for mounting chain devices and bottle cages. 3 different sizes and there is a 31.8mm which should be perfect. Easy job to retro-fit an existing QR lever and bolt I reckon? Part Number: DMR-CLP-286 Alternatively here is something from a different application that would probably work. You might be able to contact the company for a ...


Typically, for an aluminum post you align the gaps. For a carbon post you turn the clamp 180 degrees from the gap in the seattube to minimize the chance of crimping the seatpost. Some manufacturers have their own recommendations, but they're typically in line with what the aforementioned guidelines.


Sounds like a perfect use for a "wedge" seat post. Animal bikes has one, other companies might make longer ones. You'd need to get a Pivotal seat to go with it.


Since you already modified the frame a lot, I would go further and modify it again by welding two "ears" where you could attach a real quick release, something like the picture shown below: Another possibility would be to use a (cheap?) steel clamp which you could bend open, then wrap around the frame and put the quick release through. Steel will probably ...


Aligning the gaps will allow the clamp to compress the tube a little better, therefore reducing the amount of tension needed from the clamp to hold the seat post in. And less tension means a longer life for your seat post clamp. Now, there's the issue of which way your clamp lever faces if you use a quick release clamp. Most have it facing backwards so it ...


0.2mm on seatpost clamp will make no difference! The tolerence is small maybe 1-2mm. a 0.2mm difference is pretty much how far the clamp moves when you tighten the binder! maybe even more. Youll see how far it moves when you take the binder off the frame and tighten it a little. the clamp goes smaller basically clamping down. so in practice it clamps the ...


Figured this one out after a bit of work. If you look from the back side, you will see that there is a gap in the metal. This is to allow compression to clamp the seat tightly. Put the clamp on the frame of the bike, and if there is a quick release, tighten the nut hand tight. Then put the seat at the right level, facing the right direction, and close the ...

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