I want to put a rack on my Cotic X - it is theframe without the rack mounts. Does have unused canti brake bosses but I think a seatpost clamp adapter will work best for me. Thinking about a Tubus Disco rack (light, strong, cheapish)
I need something like this:
but for a 27.2mm seatpost, Cotic says the clamp must be 29.8 or 30mm. Really struggling to find one in this size - they are either 31.8 or 34.9mm. Anyone here know where to find one?