Phil Wood freewheel hubs, solved the bent axle issue, so Did Roger Durham's Bullseye hubs.. have used both..
Ive been fine touring for a decade + on 6 speed 14~ 34, and 13~34t freewheels friction shifting, wider spacing makes it simple.
And, in swapping my old <C> hub wheels , to a new 130 frame , the Wheels of Boulder axles seem to be less brittle hardened,
than Tulio C's were..
...