Walter , I don't post much on RCU these days, but, since I have built and flown and still have a Mig 29 , here goes:

I binned the original hydraulics, (pump , accumulator and electronic controller) they don't work reliably enough to be called airworthy, although Andreas blamed my lack of knowledge of hydraulic systems for my problems.

Mine flew with the South African ( they couldn't get the original system to work either ) Omega system but the pump output is such that actuation speeds of the gear is rather slower than I would like.

I now have a new Hausl pump and valves and this winter, I will get my Mig airworthy again, (using two PST 1300s, exceptionally reliable engines, with Weatronic radio which makes setup much easier) BUT using air for power except on the MLG. The hydraulic downlock on my Mig is achieved by closing Festo valves in the hyd line, actuated by the ECU. you don't absolutely NEED the latest, self locking, cylinders using this principle.

I have replaced the twin JR 8411 servos on each stab with a single JR 6301 servo which gives more than the torque of twin 8411s with half the chance of failure.

I concur with Graphix about CARF service on the Mig, I spent a huge amount of time, money and effort working out the bugs and getting mine airborne, but zero help from AG, never, ever again.

A shame really, it is a MOST impressive model and is a *****cat to fly and mine WILL fly again.

David Gladwin.