OS ENGINES O.S. MAX 46AX 2 Inc Silencer L-OS15490
Stock code L-OS15490Brand OS ENGINES
Available for same day despatch Mon–Fri if ordered before 2pm, when possible
As the replacement for the high-performance 46FX, it's no wonder that the .46 AX shares many of its features. The raw power. A remote needle valve. Mounting bolt patterns. A balanced "D"-cut crankshaft supported by dual bearings. CNC-machining for the piston and other parts. And the same exclusive ABL cylinder liner that has made FX reliability a byword. The new carburettor has been refined further to make adjustments more precise and throttling even more progressive. But all the same, the 46AX is a different – and better – engine. Why? Because times change and technology advances. And because O.S. uses the best of both to make a good engine a better engine.
ABL (Advanced Bimetallic Liner) uses two O.S.-developed alloys to provide durable barrier between the brass liner and piston.
- Features the 46FX's durable ABL (Advanced Bimetallic Liner) plating, as well as a new design that automatically centers, levels and seats the head during re-replacement. Head snugs down with only four screws – not six.
- Subtly tapered low-end needle eliminates surging at transition, ensuring exceptionally smooth, consistent throttle control from idle to top speed.
- Redesigned liner ports and a ball-milled inlet port minimize turbulence during fuel/air mixing, making combustion and power output more predictable.
- New high-speed needle bracket simplifies horizontal/vertical mounting – and can be replaced in just minutes.
- Minimizes vibration-induced "creep" and re-sets with a ratchet spring on the high-speed needle and O-ring seals on both needles. A simple rotor guide screw replaces the throttle stop screw – and eliminates spring-related movement.
- Includes a new low-noise E-3070 muffler and 2-year limited warranty protection.
- Includes a lock nut and longer crankshaft with more thread length, for better prop nut engagement and greater pilot safety.
| Displacement (cu in) | 0.455 (7.5cc) |
| Bore | 0.866 (22.0 mm) ) |
| Stroke | 0.772 (19.6mm) |
| RPM | 2,500-17,000 |
| Output (HP@rpm) | 1.65 @ 16,000 |
| Weigh w/muffler (oz) | 17.2 (489 g) |
| Recommended Props | 10.5x6 11x6-8, 12x6-7 |
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