Key Features

• AAC design for lighter weight and increased longevity
• Reliable start-ups and easy handling
• Perfectly sized right for mid-sized aircraft

Overview

Built for horsepower, the .91 still uses the same case as the FA-65/80 but puts out a whopping 1.7 hp. Famed Radio Controlled Modeler columnist and engine guru Clarence Lee calls the .91S "a real stump puller...". Compared to popular competitors, the lightweight AAC 91S wins the power-to-weight ratio contest hands down. You will be astonished at the power, reliability and smoothness of this engine when you see it for yourself.

Specs

• Type:4-stroke
• Displacement:.91 cu in (15.0 cc)
• Bore:1.11 in (28.20 mm)
• Stroke:0.94 in (24.00 mm)
• Cylinders:Single - Chrome Plated
• Engine (Only) Weight:19.6 oz
• Crankshaft Threads:M7 x 1mm
• Benchmark Prop:14 x 6 Zinger @ 9,100
• Prop Range:12x8 - 15x6
• RPM Range:2,000 - 11,000
• Fuel:10% - 30% Synthetic
• Mounting Dimensions:116 x 60 x 117 mm
• Muffler Type:Cast
• Cylinder Type:AAC
• Carb Type:Barrel, 2 Needle Valve
• Crank Type:Ball Bearing