Design with two power switches.One at the front for airplanes and one at the back for a helicopter. 

It easily starts 80 cc gas engines.

Very high quality and performance.

The gear of 6:1 gives a very high torgue.

Super light weight with carbon fiber material. Weight is only 1.45kg.

Specifications:

 

Voltage:  12V-18V

Recommended Battery:   12V 7AH lead-acid battery, or 3S/ 3000MAH 20C (or above) Lipo

Working Current:   30A

Working RPM:   1000rpm