Ritterview

I have a K-Edge on my BMC half-bike, and it works well. I contacted K-Edge to ask them about a version for a triple, for use on a Calfee tandem. The rep replied they are working on a triple version. He wanted to know the seat tube diameter for the Calfee, and I didn't know.



For Campy, the K-Edge would work with the braze-on, but not the clamp-on front derailleur. Calfee uses clamp-on. Calfee doesn't drill into their tubing, but adheres carbon limpet bolts, as depicted below. I wonder if this could or should be done to use a braze-on FD?