RC gear

http://diydrones.com/profiles/blogs/mode-switch-setup-for-turnigy-1

http://blog.ponoko.com/2010/11/16/ten-rules-for-maker-businesses-by-wireds-chris-anderson-%E2%80%94-rule-1/

Fuses and wire thickness
If the wires are to thin, they will heat up and burn out the electric motor. The motor will become gradually hotter. A fuse in this case won't help because it only triggers on an overcurrent. A thermal measurement device would pick up on this