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Thanks - I believe they're 7x9 oval rails (it's a specialized romin saddle). Would you be able to elaborate on the clamp characteristics that suit these rails?
Cupcakes-
Would you be able to elaborate on the clamp characteristics that suit these rails?
If the clamping bolt(s) move(s) the two halves of the clamp together along an axis orthogonal to a plane bisecting both rails, you might not need new clamping parts. Anything else and you almost certainly will. Which post are you using/planning to use?
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Avoid 3T posts, even with the oval rail kit. They don't seem to fit well, and you need to take a dremel to the rail clamp for it to work.
gbj_tester
Philip_J_Fry
Depends which carbon rails. 7mm round ones fit most seat posts, some people suggest you should avoid short rail clamps, excessive overhang and sharp edges, but you should already be avoiding those things regardless of rail material. Many carbon rails are oval 7mm×9mm, which will be fine with some clamp designs but either need special clamping parts or won't work at all with others.