Just in case you folks with the 29's don't read
all of the threads on this forum ...
A post about some fancy-looking brakes in a South African Su-27 led Marty (ozcan) to realise that the guys from Bay Turbines claim to be using hydraulics too, so are another possible source of info / solutions.
The thread is here:
http://www.rcuniverse.com/showthread...619#post372423
Good luck guys !
Gordonn