RC de Havilland DHC-2 Beaver 1/4 scale

This is the story of the struggle to get the right engine for my 1/4 scale Beaver. After many calculations and 38 years of experience I nailed it in my 3rd attempt... Well done wise man... Evangelos 5 cyl radial144cc specifications: Bore:35mm Stroke:30mm Weight 4.2Kg Prop 30x10 at 5500rpm CM6 Spark Plugs with CH Ignition