-
I tried that before, and wasn't massively impressed by the breaking power. The brakes were possibly a bit fucked/ set up badly though.
@mind_maze didn't think of that, it's 2x only isn't it, and a different cable pull to 11sp
-
Yeah it's a bit confusing... new shimano 10 speed (Tiagra and GRX) use the same actuation ratio for the rear derailleur as 11 speed, so you can use an 11 speed mech if you like... but this means that the cable pull of the levers are different to the old 10 speed.
So one option would be GRX 10 speed levers, GRX 11 speed long-cage rear derailleur, wide range 10 speed cassette (e.g. Deore) (but double check that!)
If your open to cable/hydro brakes that opens a lot of opportunities. 10spd 1x 36T x 11-48 microshift using trp hy/rd brakes..