... the tiebar or loop). You then need to fix the body to the underside of the baseboard. Glue might work well but 4 screws judiciously placed around the body and screwed into the baseboard will do the job. Don't forget to snip off the excess wire. One end of the underbaseboard arm has a hole for connection to your means of operation, whilst the other end will operate a micro-switch (not supplied) if you need it. I'll see if I can add a photo later today. Attachment: attach_1268_1564_actuator.jpg 356 posted: 12 Dec 2011 11:05 from: Stephen Freeman Lots on this on RMweb again but basically you need a servo control board (various sources) and suitable servos (Towerpro 9g SG90s). LSWRArt wrote: Interesting idea? What do you need to operate R/C servo motors? Looking on the web it seems you normally use pulse width modulation in a model aircraft, so are you using a multi-channel aircraft controller, or is there a simpler solution, as you only need 2 positions ...