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APC 9x4.7SF Slow-Fly Propeller
APC Slow-Fly Electric Series props offer high thrust at low RPM, and offer great value for your electric powered models. The center hole of the prop is designed to accept a reducing bushing to fit your propeller shaft. Included with the prop are 2 bushings to fit 3/16" and 6mm prop shafts.
According to the widely accepted Maximum RPM formula of 65,000/D for APC SF-Series props, the 9x4.7SF prop should not be used over 7,222 RPM.
Hub Diameter: 0.50 in.
Hub Thickness: 0.31 in.
Shaft Diameter: 1/4 in.
Product Weight: 0.32 oz.