Morris Mini Motors conversion Kit: https://www.morrisminimotors.com/conv...

Instruction manual OS Gemini: http://www.osengines.co.jp/english/l...

Specification:

Bore: 1.09 in (27.7mm)
Carb Type: Rotary, 2 needle with choke valve extension
Crankshaft Threads: 5/1624
Cylinders: Twin
Displacement: 0.809 cu in (13.26 cc) x2
HP: 2.0 hp @ 10,000 rpm
Height: 3.15 in (80mm)
Length: 4.72 in (120mm) from backplate to front of the drive washer
Plug Type: (2) Type F glow plugs
Prop Range: 15 x 8 20 x 6
RPM Range: 2,000 10,000 rpm
Recommended Fuel: Glow fuel with at least 16% lubricant content
Stroke: 0.866 in (22.0mm)
Total Weight: 2.43 lb (1.10 kg),38.8 g (1,100g)
Type: Twin cylinder 4stroke airplane engine
Width: 7.72 in (196mm)