Electric Flight in Australia

 

Where do I locate all this gear in my aircraft?

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Bolt your motor to the front former. The former is usually made of 3mm ply and fixed in securely with epoxy. Most Japanese (and German) motors are fixed with short 3mm bolts. Add a hardwood wedge under the rear of the motor to help take the strain of hard landings – ouch!

Fit your controller directly behind the motor so as to keep the wire cable as short as possible. If possible move the controller out of the path of your battery pack or else it will be wiped out in the event of an accident. Some fliers place the controller in the canopy, or servo tape it to the underside of the hatch.

Move your motor pack around (with everything else in place) until you achieve the correct centre of gravity. Epoxy a solid former in front of your motor pack to help restrain the pack (3mm ply). Some securing system is required to prevent movement during flight, even if it is simply packed around with foam. Many cunning systems are used to locate the motor pack, so here is a chance for you to use your ingenuity.

Receiver and flight pack should be behind the motor battery pack, again to avoid damage in the event of an accident. This means at the rear of the area under the wing, or even in the tail boom of the aircraft. Note - you must have the receiver as far away from the controller as possible to avoid interference. The receiver and battery pack can be located in any suitable way – one way is to stick the receiver and battery pack together with double-sided tape (if you are using a very small battery pack), and then stick the lot to the fuselage floor or side, again with double-sided tape. Maybe you can make a compartment for these components and wedge them in with soft packing, adding a screwed on ply strap across the top to retain the lot.

Sometimes, because of the space restrictions, the receiver and flight pack may have to go behind the servos. Maybe only the servos will fit under the wing and the Rx and battery may have to be placed in the rear of the fuselage with access through a hatch. This may also be desirable to help achieve the correct balance. The flight pack is usually small (typically 110 mAh or 270 mAh) to help keep the weight down.

Servos are usually mini-servos and will have to go two abreast with pushrod cables running down each fuselage side, sometimes routed around the Rx and Flight Pack.

Peter Pine, PO Box 324, Pottsville Beach NSW 2489
Phone (02) 6676 1437 • Fax (02) 6676 2831
E-mail: ppine@northnet.com.au