i was at this website http://www.rc-cam.com/microszr.htm and it shows how to transfer parts from a mini car, and put some of them in an r/c airplane. on that page somewhere, he talks about making your own actuator coils, and he wanted to make his 60 ohms, and somehow, he was able to measure the ohms so that he would know how much he had. is there any formula to measure ohms on a coil of an acuator?