This is a Master Airscrew Injection-Molded Fiberglass-Filled Nylon Propeller.|
The Classic Prop is Designed to Look Scale on Piper Cubs and
Similar Aircraft from the 1930s and '40s.
NASA Airfoils and Constant-Pitch Designs enable this Propeller to
deliver more Thrust at Lower RPM.
The Latest in Engineering Technology used for this Updated Design.
Lower Noise and Accurate Balance
Available in a Wide Array of Sizes to Suit Every Application.
Propeller is totally fuel-proof.
The Blades have an Elliptical Planform with rounded tips
One Black 12.5x5.5" (31x13cm) fiberglass/nylon propeller
Hole Diameter: .25" (6.4mm) approx.
Propeller Diameter: 12.5"
Propeller Pitch: 5.5"
Depending on the engine crankshaft size, the propeller may need to
be reamed to a larger size using GPMQ5005 (SAE) or
Four-stroke engines are typically higher torque engines and should
use the larger props indicated in the range.
Recommended prop ranges will vary depending on your particular engine
The Chart below represents average prop usage and should be used as
Only a General Guideline. Always refer to the manufacturer's
instructions included with your engine.
Engine Size 2-Stroke 4-Stroke
.049-.051 5.5x4, 5.5x4.5, 6x3, 6x3.5, 6x4 N/A
.09 -.10 7x4, 7x5, 7x6 N/A
.15 7x6, 8x4, 8x5, 8x6, 8x7 N/A
.20 -.25 8x6, 8x7, 9x4, 9x5 9x4, 9x5, 9x6, 9x7
.29 -.35 9x6, 9x7, 9x8, 9.5x6, 10x4, 10x5, 10x6 N/A rmb 8/30/06
.40 9.5x6, 10x4, 10x5, 10x6, 10x8, 10x9 11x6,12x6
.45 -.50 10x8, 10x9, 11x4, 11x5, 11x6, 11x7, 11x7.5 N/A
.60 11x5, 11x6, 11x7, 11x7.5, 11x8, 11x9 11x8,11x9,12x6,13x6
.71 -.80 12x6, 12x8, 13x6, 13x8, 13x10, 14x8 N/A
.90 13x6, 13x8, 13x10, 14x6, 14x8 11x9,12x8,14x6
1.08 14x8, 14x10, 15x8, 16x6 N/A
1.20 14x8, 15x8, 16x6 14x8,15x8,15x10,16x8
1.5 16x8, 16x10, 18x6, 18x8 N/A
1.8 18x8, 18x10, 20x6, 20x8 N/A
2.1 20x8, 20x10 N/A
2.7 -3.0 22x8, 22x10, 22x12, 24x8, 24x10, 24x12 N/A