HI
the retracts while not the sturdiest seem to hold up quite well. I fly off a grass patch
without problems but like I said changing the wheels and putting a bit of glass
cloth round the u/c mounts helpS. They are still ok after about 50 odd flights.Also
the retract servo has to have a good throw with wide arms a metal gear one is
ideal. you will have to cut a hole in the bottom of the wing and mount it from
below if its the size mine is .you can just see it on the pics. I have covered it with a plastic
cowling

FLY WELL