This is the OS Engines 55AX .55 ABL glow engine, with 40J carburetor and included OS E3070 Muffler. Increase displacement in your 40-size model the easy way: just drop in a 55AX engine! You'll enjoy more horsepower for swinging bigger props ?which means improved 3D, precision and sport flying. Best of all, there's no modifications required!
Features:
- Mounts directly into the bolt pattern for a 46AX.
- A diagonally-placed needle eliminates the need for a remote needle valve.The 5-sided, angular head design looks great and significantly increases surface area for better cooling.
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: 1.75 hp @ 16,000 rpm
- Weight: 14.3 oz (404 g)
- Recommended Props: 12x7, 12x8, 13x6, 13x7
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