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.
USA - Domestic orders
All orders of $40 or more are eligible for FREE shipping service.
Flat shipping fee of $5.49 is available for all other domestic orders.
$13.99 Flat rate shipping to Canada.
$17.99 Flat rate shipping worldwide to more than 200 countries.
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We strive to keep all our products in stock and perform shipping usually within the same or next business day*. During national holidays we might experience some delay in dispatch. You will receive an automatic confirmation e-mail when your order is shipped. We do domestic and international deliveries via our partners:
Delivery time is calculated based on the expected transit time provided by the carrier. Flat rate shipping is fulfilled via USPS First Class mail with usual transit time of 1 to 3 business days* for domestic orders and 7 to 21 business days* for international orders.
* Delivery time cannot be guaranteed.
3MR Series 3-Blade Performance 0737 Black Multi-Rotor Propeller - Tractor/ CCW
Designed for VTOL drones and slow flier airplanes, the 3MR series is optimized for performance and outstanding efficiency in hover and forward flight. The MR propellers are the perfect choice for long flight missions or super stable video recording.
3MR propellers are manufactured from Glass Fiber Reinforced Composite for strength and durability.
All MR Propellers are Factory-Balanced
|Propeller diameter||7" / 177.8 mm|
|Propeller pitch||3.7" / 94 mm|
|Shaft diameter||5 mm (adjustable via adaptor rings**)|
|Hub thickness||8 mm|
0.25 oz / 7.1 g
0.81 oz / 23 g
|Direction of rotation||CCW/Tractor|
|Material||Glass Fiber R Composite|
** adaptor rings sold separately here