The Propeller Diameter is equal to the diameter of a circle drawn by the propeller tips during rotation. For 2 blade propellers the diameter is equal to the length of the propeller from tip to tip. For 3 and more blades, the diameter can be derived by 2x the length of the single blade (from tip to center).
The Pitch is defined as the distance the propeller would travel forward in one revolution if it was moving through a soft solid (like a screw through wood).
Normal (N) - Tractor
Reverse (R) - Pusher
also known as P-type, direction of rotation is established when a propeller is rotating clockwise (CW), as seen by an outside observer standing in front of the propeller and looking at it.
The shaft diameter is equal to the size of the orifice at the center of the propeller where the motor shaft is connected. Since shaft diameters differ from engine to engine, some propellers are manufactured with 2 shaft diameters (pre-drilled on the back) for easy adaptation. Some propellers, as the 3 Blade and Electric Only Series, include Adaptor Ring Sleeves which can adjust the the shaft diameter to several inch or mm sizes.
The Hub Thickness is usually used to determine the necessary engine shaft length so there is enough space for connecting the propeller and the cap or the spinner.
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11x7 3-Blade Propellers for Model R/C Airplanes
3 blade model airplane propellers specially developed for the most demanding hobby professionals. Great performance and scale look both for electric motors and glow engines. Carefully crafted from Glass Fiber Reinforced Composite. Available in sizes 5" to 16".
|Propeller diameter||11" / 279mm|
|Propeller pitch||7" / 178mm|
|Hub thickness||9/16" / 14.3mm|
|Shaft diameter||1/4" / 6.35mm **|
|Propeller Weight||1.23oz / 34.9g|
|Direction of rotation||Normal / Tractor|
|Material||Glass Fiber R Composite|
Awesome upgrade for various airplanes as the Horizon Hobby Turbo Timber, Night Timber, E-Flite Air Tractor, F6F Hellcat, Telemaster 40, Big Balsa Tiger Moth and many more mid-size airplanes with 11" propeller diameter.
* prepared for versatile shaft diameters. For more information check the shaft diameter guide here