I was considering rolling my own magnetic actuator for a light indoor RC aircraft. On youtube someone made a spool that came apart. He rolled the “magnet wire” onto the spool. Then added PVA glue. As he disassembled the spool he added more glue. He ended up with a stiff coil of just wire and glue. Very light.
What sort of resistance should I aim for? I want to use “1s” so 3.4-4.2v If I drive it with a PWM, probably at 100Hz ish, will the inductance dominate or can I just use ohms law? On a news group they were talking 25 - 50 Ohms but it was not clear if they were using pwm and at what frequency.
I will place a magnet in the coil and this will turn and move the control surface. Do you think I should drive it using alternating field so 50% is centred or use an on off approach where 0% is the middle and polarity is reversed to go from moving up to moving down? The control surface will be floppy but I think it will tend to centre, rather than droop, during flight from the air as it moves.
I may try and print a spool that disassembles with a shaft to fit in a drill/driver/Dremel. I may even try and print a very light spool and leave the wire on it. It will be slightly heavier but could be easier to mount and repair, etc.