Tuesday, September 22, 2009

Searched for the best way to connect the motor to the ESC. The most commonly used connection is the high amp rated bullet connectors, commonly found at RC retailers. A cursory search through Jameco, Mouser, Digikey did not find any suitable replacements. A similar issue with the connection from the battery to the ESC. The battery uses a bullet connector of undetermined size. To route power from one battery to four ESCs will require a separate adapter to be made. Suitable cable can be found in the back cabinets. A commonly used 2 pin connector used with RC equipment is the Dean’s connector. Ordered a pair of both from an online retailer, but will continue to search for cheaper alternatives.
Ran through the size calculations again. Maintaining a vehicle diameter of 750 mm. The rotor blades have a radius of 127 mm and a diameter of 254 mm. The wires from the motor have a length of 70 mm. The wires from the ESC to the motor are 114 mm. Placing the motor at a blades radius from the edge puts the motor at 248 mm from the center. The wires from the motor and the ESC places the ESC at 66 mm from the center of the vehicle. The wires from the ESC to a power source is 100 mm long, and the wires from the ESC to the control source is 215 mm long, both are sufficiently long enough that no extension cable is necessary for wiring.
Placed several orders for components: DX6i Transmitter/Receiver, 4x TowerPro Brushless Outrunner motors, 4x Turnigy Plush 12 A ESC, Zippy Flightmax 4000mAh 3S1P 20C, several connectors, and a set of metric tools. Components from Sparkfun Electronics currently out of stock, but expected to be in soon.

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