Electric Only - 7x4 Propeller
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 $25 or more are eligible for FREE shipping service.
Flat shipping fee of $4.95 is available for all other domestic orders.
International FREE delivery (DHL 2-5 business days*)
We deliver our products internationally all over the world. For exact shipping cost calculation, please make your selection of products and start the checkout process. In case there is no shipping method available for your country, please contact us here.
Depending on the local regulations in your country, additional import taxes and fees might be applicable. For more information, please contact your local customs office.
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 is not guaranteed.
RETURN / EXCHANGE
At Windsor Propeller we value very much our customers. If you are not fully satisfied with your purchase, please contact us over e-mail, phone or via our website contact form to arrange a return or exchange of your purchase. You can return any product within 30 days from purchase. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in its original packaging.
To complete your return, please contact us to receive a Return Authorization Number. Always attach the RA number to the package returned. Once your return is received and inspected, we will notify you over e-mail. If the refund is approved, a credit will automatically be applied to your credit card or original method of payment. Please allow up to 21 days for the amount to be processed.
Shipping costs are non-refundable. If you receive a refund, the cost of the shipping will be deducted from your refund. Windsor Propeller is not responsible for the cost of return shipping. Customers are urged to hold proof of postage as we are not responsible for returns lost by courier or post office.
We only replace items if they are defective or damaged. If you need to exchange product for the same item, please contact us.
Electric Only Series
Electric Only Series is dedicated exclusively to electric motor r/c airplanes and multi rotors. Features wide, thin under-cambered blades for optimum lift, flight duration and power draw. Tractor and pusher props available for twin engine airplanes. Made of Glass Fiber Reinforced Composite.
|Propeller diameter||7" / 178mm|
|Propeller pitch||4" / 102mm|
|Hub thickness||3/8" / 9.5mm|
|Shaft diameter||1/4" / 6.35mm **|
|Propeller Weight||0.26oz / 7.4g|
|Direction of rotation||Normal / Tractor|
|Material||Glass Fiber R Composite|
* prepared for versatile shaft diameters. For more information check the shaft diameter guide here