Thanks for the kind words Gamera.
The gear/motor combos were something I bought from eBay, a few bucks tops. The LEDs were on a simple flasher circuit. The only issue is the tight space, so the LEDs had to be those tiny SMD and the nacelle interiors had to be ground down as well as some of the gearbox housing (brass).
In terms of painting, it was real simple, a pencil, some shades of white/grey Vallejo and a few oversprays of transparent green and yellow mixed in Future, then mixed in Matt varnish to get a haze.