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  Frequently Asked Questions:
Does the PAC propeller have a warranty.
The PAC propeller is covered under warranty for one year to the original purchaser. The warranty covers material and workmanship.


Can a PAC Wood or Carbon Fiber Propeller be re-pitched.
It is possible to change pitch on all of our propellers. Modification of a propeller to correct for performance conditions may included re-pitch, reducing diameter, reshape of the chord width, thinning airfoil sections or a combination of these modifications.


Do you offer other propeller paint colors, painted tips, or paint schemes.
We are pleased to offer any color or paint scheme to make your propeller unique. There will be a small fee for the material cost and additional work.


I have a propeller that works well for me, can you make a copy of this propeller.
Our CNC carving equipment has a copy function that allows us to copy other manufacture propellers. If the original company is no longer in business we will be happy to produce a copy. We require one propeller blade and can provide repairs to that blade for the copy process if necessary.


Do you have propellers in stock
We are prototype manufacture designing and producing propellers from 20 inch for the model market to 30 foot 10 bladed propellers for NASA wind tunnels. It would be difficult to keep in stock every design so we attempt stocking only common propellers. If we do not have your propeller in stock the manufacturing time usually will be 30 days with exception of high volume periods. We do have a 14 business day expedited delivery option with overtime rate 50% of the original price.


Would it be possible for you to send customers names that use your propeller on my type aircraft?
It would be beneficial that you talk with a Prince P-TIP user, however, I do not provide customer names for a couple reasons. Most customers do not want a supplier to provide contact information even though most of us like talking to other builders and are pleased to help but some don't and I have to respect these request. Another reason I personally do not ask a manufacture for customer names is, I consider the manufacture wants my money as I do yours but I feel some may be selective of the provided names to convince me to purchase. My suggestion is to go to yahoo.com and select, group, for the type aircraft and ask about our products and service. I feel you will not only receive a truthful answers but also find we manufacture a good product with great service.


Your web site is very professional. I found it easy to navigate,uncluttered, and all my questions were answered. The Propeller Wizard led me to the purchase of your Carbon Fiber P-TIP Propeller. Would you mind sharing your Web Master.
To find a company that provides a great service, listens to customers needs and is more interested in the final product than the total of the Invoice is very unheard of in today’s market. The company is Kalamazoo Software, 269-345-2564, talk to Andrew Millin he will make the web page design effortless for you. I highly recommend this company.


Do you balance the Prince P-TIP propeller.
One of the many positive responses from customers once they have flown with a Prince P-TIP propeller is how smooth the propeller operates. We static balance every propeller. The propeller is placed on a precise balancing fixture while each of the eleven layers of coating is applied. All air movement in the paint booth is switched off while the final balance takes place. You will certainly feel the smoothness flying a lightweight Wood or Carbon Fiber Prince P-TIP propeller.


How does the Prince P-TIP propeller change pitch?
The method the Prince propeller changes pitch is due to the amount of pull the propeller has. When a propeller is at high rpm and slow airspeed the forward face of the blade has the greatest pull. When the propeller reaches the designed airspeed the propeller face has zero pull. To take advantage of this condition we taper or sweep the leading edge of the Prince propeller profile. When the propeller pulls or cones forward in this high rpm slow airspeed mode the outer portion of the blades pull forward. As the blade pulls forward it will untwist the propeller and offer about 4" less pitch. The pitch will start to move back to the higher pitch carved setting as the airspeed increases. An example of the pulling forward or the proper term, Coning, can be seen on helicopters and propellers if you are looking for it. You may have noticed a helicopter rotor in static running the rotors are straight out or running horizontal, when the collective pitch is applied the blades are now in a bowl shape or coning. The blades will lessen in this coning angle as the helicopter increases in its speed and similar the Prince propeller will proceed back to the carved pitch when the aircraft speed increases.

So the Prince propeller will be designed for maximum top speed. A common fixed pitch propeller would suffer in the takeoff and climb mode but the Prince propeller will lessen in pitch and provide a better takeoff and climb and not penalize for Top Speed. Many of our customers report their Top Airspeed the same as the constant speed propeller with still great takeoff performance.


I currently fly a Sensenich propeller on my Jabiru 3300 powered Sonex and unhappy with the performance. Do you have comparison performance values for your Carbon Fiber P-TIP Propellers?
Sonex does a great job of testing all propellers prior to offering them to the customer. The customers using our propellers find the performance better.

The test results for the 54" diameter 60" pitch, Jabiru 3300 are listed below.

PRINCE/SENSENICH
*3290/3410 rpm, *176/170 mph, *27.0"/26.8" mp, takeoff roll *2790'/2910', rate of climb *1364/1324.

The Prince runs 120 RPM less, 6 MPH faster, .2" more Manifold Pressure, takeoff roll 120' less, Climb Rate 40 FPM better. At 2900 RPM the fuel flow *4.6/5.2, .6 GPH less with same EGT.


Prince Aircraft Company    Phone 419-877-5557    Fax 419-877-5564     info@PrinceAircraft.com