The O.S. Max .46AX ABL BB Model Airplane Engine with Muffler. Is suited for a variety of R/C aircraft including trainer, sports, aerobatic, and scale type airplanes.

FEATURES:

• Redesigned remote needle holder is separate bracket, not part of the backplate
• Advanced Bi-Metallic Liner. This process uses a double layer of plating material, which helps the metal bond to the cylinder for durability.
• More precise fit between the piston and the sleeve for better compression and longer life.
• Side exhaust
• Newly designed Power Box muffler with squared-off shape
• 40G Carburetor
• Ball bearing-supported crankshaft
• TWO-YEAR limited warranty

INCLUDES: O.S. Max .46AX ABL BB model airplane engine with muffler, A3 glow plug, 2+ inch (57mm) section of tubing for remote needle, two 3mm x 35mm cap head muffler screws, warranty sheet, decal sheet, and illustrated instruction manual.

REQUIRES: Fuel containing 5%-20% nitromethane with at least 16% lubricant.

SPECS:
Displacement: 0.455 cu in (7.45cc)
Bore: 0.866" (22mm)
Stroke: 0.772" (19.6mm)
Practical RPM: 2000-17000
Power Output: 1.65ps/16000 RPM
Weight: 13.2oz (375g) without muffler
Weight: 17.2oz (489g) with muffler
Recommended Propellers: 10.5x6, 11x6-8, 12x6-7, use 10x6 for break-in
Crankshaft Size: 1/4-28

NEEDLE SETTINGS: High Speed Needle: 1+ to 2 turns Out from closed position, per page 18 of manual.
Low Speed Needle (aka: Mixture Control Valve): Close the throttle rotor gradually from the fully opened position until it is just fully closed. (Do not turn further.) Then screw in the Mixture Control Screw until it stops. Now unscrew the Mixture Control Screw approx. 3/4 turn. This is the basic position, per page 23 of manual.

OS .46 AX Engine Manual