Prince Carbon Fibre Propellers United Kingdom
Carbon Fibre P-Tip £1500
Two carbon fibre propellers made by Prince Aircraft, Ohio. Both are flange diameter 7”, bolt circle diameter 4.75”, 6 bolts 0.5” diameter, lug diameter 0.75”, centering boss 2.25” deep (suit approx 180-200hp Lycoming 360). Both are virtually brand new, used only for engine runs with about 3 hours total on each and both in excellent condition. The propellers are designed to reduce pitch at low airframe speed and high rpm and relax to the stated coarser pitch at cruise speeds and rpm. Avoid the price, weight and complexity of a VP propeller. Possible to try before you buy. Check out the Prince website for more details http://www.princeaircraft.com/carbon.aspx . Prop A is 74” diameter and 78” pitch, colour black, Prop B is 72” diameter and 70” pitch, colour black with yellow tips.
At the cruise, Prop A is designed to give 173mph (150knots) at 2350rpm and Prop B 155mph (135knots) at 2350rpm. These values depend upon airframe design (whether retractable, airframe overall drag profile etc).
Original price for both was approximately £2500; for sale at £1500 each or offers.