althebike wrote:When I was looking for a bag, for my carbon SP I was met with a sharp intake of breath with any metal clamping, and so I brought an alpkit that uses velcro, I have been told this is fine, the proof is in the pudding of course, if a prev.poster broke an alloy post, maybe it is not the material that is the key issue.
I've broken alloy posts (plural) and suspect an SQR clamp/bag played a part in one. But I'd say it would be wise to be cautious about clamping to any thin walled tube, of any material. And it would be daft to do it in a way that scratches the post, because that weakens it.