Motors listed are all rated at 12 volt D.C. (except where shown). Current loading varies with type. For the motor to develop full power it is essential that a power supply of at least equivalent output required.

Choice of motor depends upon type and size of model to be flown and also desired performance. Recommendations for most motors are shown. To avoid over loading a motor it is important that the propeller size is correct. The propellers listed with the motors have been purpose designed or adapted for RTP use and in each case represent the MAXIMUM permissible size.

For long motor life it is important that they are not run at maximum for more than 3 or 4 minutes without giving them at least double the flying time to cool down. All dimensions are approximate.