450 3-Cylinder Radial Dual Plug: HH

Specifications?
Type: 4-Stroke
Displacement: 4.25 cu in (75cc)
Bore: 34mm (1.33 in)
Stroke: 27.6mm (1.08 in)
Cylinders: Three
Engine (Only) Weight: 99 oz
Crankshaft Threads: M10x1.25
Benchmark Prop: 22x12 @ 7 000 rpm
Prop Range: 21x10 - 24x10
RPM Range: 1 200 - 8 000
Fuel: 10% - 30% Nitro - Synthetic
Mounting Dimensions: 200mm x 250mm
Muffler Type: Pipe
Cylinder Type: AAC
Carb Type: Barrel Two Needle Valves
Crank Type: Ball Bearing