O.S. 55 AX

SPECIFICATIONS:

Displacement: 0.545 cu in (9 cc)
Bore: 0.91 in (23 mm)
Stroke: 0.85 in (21.5 mm)
Practical rpm: 2,000-17,000
Output: 1.68 hp @ 16,000 rpm
Weight: 
    14.3 oz (404 g) w/o muffler
    18.52 oz (525 g) w/ muffler
Includes: #8 glow plug, E-3071 Power Box muffler & needle valve extension
Recommended Props: 11×6, 11×7, 12×6, 12×7, 12×8 & 13×6