Hi Frank yes it is. John I have built an interceptor 400. the servos are two different types two are Hi tech 55 and I have forgotten the other two however they are metal gears. the ESC is a 40amp skywalker, the motor is a 3500kv 330 out runner with 13 tooth pinion. the main gear is 138 tooth. the gyro is acer-lab G100. Power is supplied by 2200mah 15c 3 cell lipo I have also installed an alien command thermal stabalisation unit. Thanks Frank, thanks John the more help I get the better. Its been a long time since I did any electrical mechanical engineering until very recently so feel a little out of depth here although the chap in the model shop said that all seemed ok as he had owned and flown a couple of heli's but pure experience is hard to come by.