I've used this servo in my 1/8 buggy and now in my 1/10 Yeti (7.5lbs). It has no problem turning the wheels in either vehicle. Speed is actually pretty good too and much better than most rtr servos. It has a nice aluminum heatsink case but so far it hasn't gotten warm at all. I have run it with a Hobbywing sc8 and Castle SV2 and both esc's can power it with no problem from their internal bec. No brownouts or glitching. Servo uses a 25t spline like Futaba, Savox, etc. If the gears continue to hold up to my abusive driving style, then this servo is quite a good deal. (Posted on 1/16/2016)
Opened servos for inspection and found the wiring to be adequately potted. Servos center well and consistently and are surprisingly quiet in operation. Mounted 5 of them in a 30cc Raven and all have worked without a hitch while setting up the model and during initial flights. So far, so good and I wil purchase more. Thanks VH!