How to Make an Oil Free Switch - aircraft modelling tips

Some useful aircraft modelling tips

Engine exhaust, with its oil content, is the enemy of all things electronic. Receivers, servos, and batteries are always on the inside of the airplane—the switch should be as well. The photos show a way.

1. Materials needed include: a piece of V8-inch by 3/4-inch plywood the same length as the inside width of the fuselage; some V8-inch by Y16-inch balsa; a short length of inner nyrod, and a 6-inch length of /16-inch wire.

2. Measure the location of the mounting holes on the switch as well as the size and location of the slide window. For best accuracy, measure holes from the corresponding sides rather than from the centers.



3. To make the switch mount, lay out the switch, as measured, at the center of the V8-inch plywood. In the picture, the three dots in the center mark the middle and sides of the switch slide window.

4. Cut and drill the plywood switch mount. The switch window can be done most easily by drilling holes at opposite ends of the cutout, then finishing the opening with a razor knife using a #11 blade.

5. Drill a 432-inch hole through both fuselage sides 6-inch above the intended location of the switch mount plate. /32inch is the size hole that fits inner nyrod.

source: Model Airplane News, December 1987