u/netmmm

So I have an old titanium frame for from my racing days I’m transferring from 26 to 700c. Hopefully.

It has enough clearance and I have put a carbon fork up front with flat mount for disc, the plan is to get some hydraulic/cable callipers and use some 9sp Durace STI.

My question is what to do at the back, do I get a flat mount calliper and try and fit it with an adaptor or go post mount at back and flat mount upfront. The callipers seem to be easier to buy in pairs hence the dilemma.

Phew. Any help appreciated.