OMPHobby M4 Max RC Helicopter Frame Motor ESC Servo Combo Kit

Fantastic

I've been flying this helicopter for over a month, the build was very straight forward and the quality is fantastic. I took a chance buying a kit from an unknown (to me) manufacturer and I'm not disappointed. Great kit, great value.

Very Good

My kit had a screw for the tail servo arm that was the wrong thread pitch. The kit also had main blades that were unbalanced which was strange. (Buddy RC sorted that out promptly though.) Other than that it went together well and like other OMPs they are relatively easy to work on if you crash. I would recommend the PNP kit to beginners who only sort of know what they are doing and want a combo kit to make building it a little simpler. This heli is MUCH easier and more forgiving to fly than the OMP M2. I wish I had bought this sooner. After flying other craft, to me this heli feels more like a stretched 380 than a true 420 size. The canopy and canopy mounts are delicate so be careful and use oil on the mounts. The RT blades are wide and give a lot of collective and cyclic authority. The downside is that it bogs the direct drive motor a bit more than you might expect. Be careful not to have your rates and cyclic limit too high or you will definitely stall the blades in a tight turn. However, probably because of the blades, this heli works well with low rotor RPMs. It lends itself more to fast and smooth flying than smack 3D. Realistic flight time is something like 5 minutes unless you are doing full throttle tic-tocs then it's more like 3 (on the OMP batteries). I don't know how you can get 15 minutes unless maybe you only hover and run really low rotor speeds with high collective. Definitely use batteries with a high C rate (70C or better), the peak currents can be higher than a belt or gear drive and the motor might bog more with lower C rate batteries.

Nice Heli

Good design, easy to build, flys well when paired with Spektrum SRXL2 receiver and Ikon2 FBL unit.