O.S. Engine 55AX  [OSMG0556]

Increase displacement in your 40-size model the simple method: just drop in a 55AX motor! You'll enjoy more horsepower for swinging larger props ?X which means improved 3D, accuracy and sport flying. On top of that, there's no modifications required!

Mounts into the bolt pattern for a 46AX.

A diagonally-placed needle eliminates the need for a remote needle valve.

The 5-sided, angular mind design appears great and notably increases area area for better cooling.

Specs:

• Stock Number: OSMG0556
• 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: 1.75 hp @ 16,000 rpm
• Body weight: 14.3 oz (404 g)
• Includes: #8 glow plug, 40J carburetor, energy Box E-3070 muffler
• Suggested Props: 12x7, 12x8, 13x6, 13x7