Not many hours on it yet, only about 10, got it flying this year, its still a work in progress. They are quite an impressive little helicopter. The best part is how nice the controls respond and how easy it is to fly. I have the 2cyl 2 stroke variety and motor vibration is the machines biggest downside, still working on that.Gday Gary how do you like the mosquito mate? Do you have many hours on it so far?