![]() ![]() A number of propellers were built in the early forties under military contract using the year of contract as the first digits of the design number. Sensenich props are stamped with a number known as a drawing or design number. The logic of the drawing number sequence is the first number is the length in inches, the middle letters designate the engine and the final digits are the pitch.įor example, a 72CK is a 72 inch prop for a Continental engine and has a pitch of 44 inches. There are a few exceptions to this logic. ![]() The table below is arranged in drawing number order. Locate the drawing number in the left column then read across to locate the aircraft and engine combination the prop was designed to be used on. This is a fairly large page it may be easier to locate your prop by using the search or find tools of your web browser. To my knowledge Sensenich is the only manufacturer for which we have been able to correlate serial numbers with approximate date of manufacture. #SENSENICH WOOD PROPELLER SERIAL NUMBERS SERIAL NUMBERS# Rearwin Skyranger Stinson 10, 10S, HW Piper J 3 C 75 Duster.
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