The largest engine in the FX series boasts impressive bhp for its compact external dimensions. Its 'porting' has been optimised for low RPM's and is quite happy turning big props on a scale model or low diameter/high-pitch props on a pattern aircraft. The 'ringed' piston on this size of engine allows easy starting and has a forgiving nature when it comes to 'tuning' the main needle for optimum performance.

Specifications
Displacement	26.23cc 1.604cu. in.
Bore	33.6mm 1.323in.
Stroke	29.6mm 1.165cu. in.
Power Output	3.7 / 9000 (BHP/RPM)
RPM	1800 - 10000
Weight	925g

Specification
Propeller Range: 15x13-14 16x12-14 17x12-13 18x8-10 20x8