MOTOR EVOLUTION 91NX EVOE0910

The Evolution .91 engine is designed to be the most powerful in its class, extremely easy to start and operate, and provide years of enjoyable service. It incorporates many unique design features, such as our SetRight™ needle valve assemblies. We've incorporated an angled needle valve to keep your fingers further from the propeller, and a new ringed piston, dual crankshaft ball bearing and keyed prop driver. Every feature is designed to ensure success with your new engine.

The engine features substantial ball bearings supporting the crankshaft and the front of the crankcase features extensive webbing to reduce crankshaft flex and ensure smooth running, whilst the deeply finned cylinder head allows extra airflow and enhanced cooling.

The Evolution .91 fits a standard .61-sized engine mount and after-market mufflers, making it easy to squeeze more power into your .61-sized airframe.

Features:

Innovative engineering allows for more power in a lighter-weight package

Smaller size and lighter weight than typical .91 displacement engines to deliver a higher power-to-weight ratio

Fits the same mounting pattern as the .61NX

Quality construction with high-tech appearance

Easy operation, low idle speed, smooth running

True chrome-plated sleeve with aluminium piston (ABC)

Set Right needle valves guarantee easy starting and great performance

Rear needle valve provides safe, easy adjustments

Dual ball bearing-supported crankshaft extends engine life and improves reliability

Includes silencer and Glow plug

Ringed piston and cylinder design allows for better control of piston expansion and more consistent performance