Amelvin,
The easiest and best way to control the motor is with an ESC (Electronic Speed Control), it plugs into the throttle channel on your receiver and also plugs into your motor and battery. It controls the speed of the motor just like a glow plane throttle and also supplies the receiver with power from the battery. The battery that powers the motor is likley the only battery you will have on board your plane. There are situations were some one might require a separate battery for the radio but this is not one of them. The circuit in the ESC that supplies you radio with power is called a BEC (Battery Eliminator Circuit), this will supply a constant voltage to your receiver. When the battery voltage drops to a preprogrammed level the ESC will cut power to your motor but continue to supply power to yor radio for landing. ESC come with a variety of functions and have price tags to match. I would recommend you stick with a well known name instead of going with the lower end stuff to start. Castle Creations makes good stuff and a lot of people have used them with good results. They also have a great service department and look after there customers well should you have a problem. When buying an ESC make sure you get the right one for your motor. What I mean by that is, if your motor is a brushless motor you will need a brushless speed control, if not then a brushed speed control is what you need. Also, when choosing a speed control you need to know how many amps you are going to be pulling through it from the battery to the motor. The harder the motor is working (a big prop vs. a small prop) the more amps it will draw/pull from the battery. The instructions that came with your motor should tell you what range of speed control you will need. If not chec the web for your motor and specifications for with different props and different battery sizes.
Hope this helps. If you have any more questions, fire away, I will do my best to answer them.
__________________
Ted LeBlanc
|