FREQUENTLY ASKED QUESTIONS

Q: How can I place an Order? Can I purchase/pay online?
A: There are several ways to place an order. You can fill out our Online Order Form , email us at info@powerfin.com, or give us a call during our business hours at 435-627-0942. Our online shopping cart option is under construction. We plan on having the option to purchase/pay online up and running shortly!
Q: What is the recommended pitch setting?
A: Many factors will affect the starting pitch setting at the tip. The ideal pitch is 11-14 degrees, however, anything in the range of 6-18 degrees is acceptable on most applications. For example: assuming an ideal setup, start at 14 degrees and go from there based on your max static RPM keeping in mind that you will likely pickup about 100-500 RPM in the air.
Q: What is the propper torque for my assembly?
A: For our 'B', 'C', and 'F' model propellers, the torque specification is 175-in/lb on all bolts. For our smaller 'E' model propeller, the torque specification is 125-in/lb on all bolts. 
*Note* It is very important to store your torque wrench properly! When a torque wrench is in regular use it does not need to be wound back. However, when storing a torque wrench for an extended period of time, users should always wind it down to the minimum scale setting but never to zero. A fully loaded torque wrench, left in storage for a long period, can cause a 'set' in the spring, causing it to weaken over time. This can lead to over torquing your bolts.
Q: What is the expected lifespan of a POWERFIN Prop?
A: There are many variables that contribute to the life of a propeller. Flying environment, proper care/storage, maintenence, flight hours, all play a major role. If your propeller is properly maintaned and taken care of, it should last a very, very long time. We would ask that you send your prop in and allow us to inspect it for fatigue after 10 years of use.
Q: How do I properly care for my POWERFIN Prop?
A: The propeller is one of the most important parts of your aircraft and it should be treated as such. An in-flight prop failure is one of the worst possible cenarios to encounter. To avoid such a cenario, we recommend doing a full pre-flight inspection of your prop before EVERY flight. Check your blades for chips, dents, delamination, stress fractures, or any other signs of fatigue. Never fly with a damaged prop or one that you feel may be unsafe. When in doubt, give us a call and we would be happy to go over your questions over the phone. You can also send your prop to us for a full prop servicing which includes, minor damage repair, buffing/cleaning, weighing/balancing, and new leading edge tape.

Maintain your leading edge! If you are using leading edge tape, replace it often. When your tape begins to show signs of abrasive wear and tear, pealing, cracking, etc. replace it with new strips. Leading edge tape can't do its job if it has been worn through. If you are using our cermaic leading edge or if you develop chips in your leading edge, you can easily repair them with one of our repair kits or send your blades to us for repair.

Keep your blades clean! Bug guts are highly acidic and unfortunately, unavoidable. Left alone, the guts will eventually cause pitting in your POWERFIN blade's sexy finish. We recommend cleaning your blades with a soft rag and acetone after every flight to remove bug guts. Another great way to keep your blades looking new is to apply a spray-on car wax to your blades. The wax will act as a barrier between the blade and the bug guts. After flying the bug guts can be easily wiped clean and a new coat of wax applied.
Q: Are POWERFIN Propellers ASTM Compliant?
A: Yes! Our propellers have gone through the necessary testing required in ASTM standard 2506. ASTM documentation is kept on file and is available upon request. Beginning in 2017 all POWERFIN Propeller hubs come standard with our ASTM certification engraved on the hub face.
If you have any additional questions not addressed in our FAQs, please don't hesitate to give us a call and we'll do our best to help you out!