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91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine 91NX Single Cylinder Glow Engine
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Key Features

  • 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 engine
  • Smooth operation that's easy to tune
  • Dual ball-bearing support for longer engine life

Overview

The Evolution® .91NX single-cylinder, 2-stroke glow engine is revolutionary for modelers who demand the most of their engines. This engine provides the performance of a .91-size engine in the case size of a .61-class engine, allowing you to put more power into smaller aircraft. The awesome power of the .91NX engines makes it possible to add a higher level of performance versatility to your .61-, .75- or .91-size airplanes, so that your 3D maneuvers have more punch and warbird strafing runs can reach speeds faster than you imagined possible.

Evolution glow engines are engineered for hands-on modelers who believe there's no replacement for displacement. Their awesome power-to-weight ratios and smooth operation make any flying experience, be it 3D, sport or scale, the best it can be.

Benchmark Prop: 14 x 7 @ 10,700 rpm
Bore: 1.09 in (27.8mm)
Crankshaft Threads: 5/16 x 24
Cylinder Type: Ringed – steel liner
Cylinders: Single
Displacement: 0.91 cu. in. (15.00 cc)
Engine (Only) Weight: 15.3 oz (435 g)
Muffler Type: Expansion chamber
Muffler Weight: 4.7 oz (135 g)
Oil Type & Content: 16–18% oil
Plug Type: GP1 plug
Prop Range: 13 x 7 - 15 x 6
RPM Range: 2,000 - 15,000 rpm
Recommended Fuel: 10–30% Nitro
Stroke: 0.98 in (24.9mm)
Total Weight: 20.0 oz (570 g)

Parts Listing

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Optional Accessories

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Manuals

FAQs

Product Support Tips

Product Support

Technical questions about this Evolution Engines product should be directed to Horizon Hobby's Product Support Department:

Horizon Hobby, LLC.
ATTN: Product Support

2904 Research Road
Champaign, IL 61822


To place a Horizon Hobby Support Inquiry please visit our Inquiry Form Support Phone:(877) 504-0233
Fax:(217) 355-1552

Sales Support

If you would like to purchase this product, please go to the Store Locator or contact the Horizon Hobby Consumer Sales Department:

Horizon Hobby, LLC.
ATTN: Consumer Sales

2904 Research Road
Champaign, IL 61822
Email: Sales Phone:(800) 338-4639
Fax:(217) 355-1552