Robart retracts for H9 P51-d
i used the spring air 116 retracts in mine- but then i noticed the 700 series. the 700 series looke to be the same as the 116s except they are designed to take the robostruts without using those darn set screws. so doing it over again i would buy the 700 series. but the 116s are fine.
i also changed the angle of the gear in the wing so the axles are even with the wing leading edge when the planes is level. this required modifying the plastic wheel wells but that was not too hard. this makes it easier to taxi and land without having the plane nose over.
sorry no pics - some day i will get a digital camera but not yet.
ed