I have this under my 500X. It fits well for gaui setup but has some few weak points. 2mm Brass screws fixing to 500X body is a joke, stock servos are just not big enough for torque needed for movements, 2 of 3 servos in my mount has already burnt. I ordered few bigger different size servos from hobbyking to test which works best for tilt and roll. I think pan axis is useless in this case anyway, movements it can make is not even close what would be needed, actually imo it should have continuous pan movement to be useful so i took whole servo away and used cable ties to make it fixed. MR yaw panning with some dual rate settings can make much smoother pans. Also tilt axis movements are not even close needed, just for "fine tuning". Camera mounting plate and whole structure is not thick and strong enough so camera jitters easily when using tilt, so i took also tilt servo out of use and found it way more stabile just fixed. I think it needs many improvements and has few weaknesses but it also works as a good landing gear and lowers CG quite a lot, also makes space for carry bigger lipo. For this use it's a quite expensive part though.
I think a lot of it's weaknesses can be fixed with some mods, like bigger servos, replacing gear drive with belt for tilt axis, replacing thicker and stronger camera plate, strengthen overall configuration, also one plate of landing "ski" of mine is already broken so need to find out some fix for that too before second plate brokes when it comes much more difficult to fix. But for this price i think these things should be fixed by alware guys before starting to selling this.
Kari
