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Old 7 July 2000, 10:38 AM   #2 (permalink)
David Layton
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the number is not the identification number. It is the pitch number for that particular propellor(Hence, the 'P' prefix). The number signifies the distance the propellor would move forward in a single rotation as if it were a screw and the blades were the threads. In this case, it would be 2,480 millemeters or 248 cm.