Brian Whatcott wrote:

Here's my fantasy design. Two tiny motorbike master cylinders, one on
each rudder pedal, and one slave cylinder on a horn each side of the
nose wheel.
Then the wheel could rotate and retract, and the hose pipes from brake
flexibles, would just flex. (Difficult to make this light enough, I
imagine.)

Brian W

I kinda suspect it would take a LOT more fluid flow than a brake master
could deliver - and a lot of pressure too.