Originally Posted by
noneofyourbusiness
For high speed flight, what keeps the x2 type design going straight forward, if the main rotors are canted to offset prop reaction torque?
The cant itself will be largely irrelevant for straight flight because it is only relative to the fuselage. The only small effect would probably result from slightly increased drag of the rotors on the side where the rotors need to produce a bit more lift to counter the torque. On the other hand you will have a drag force on the opposite side resulting from the fuselage being displaced to the opposite side by the torque and the resulting cant.
But realistically this will be negligeable and be easily countered with a tiny bit of crab.