This is a engine that I do like. The sound it makes resembles
the II-world war attack planes. It starts very easily, the pump system is very reliable, and the quality
is excellent!
 
 
 
 

Specifications (as far as I know) is as follows:

Piston size:
Stroke:
Displacement:    50cc
Power:              4.8 Bhp
RPM:               1.200 -> 8.000
Propeller:         20-8 / 20-10
Fuel:                16% nitro
Weight:
Size: