bduffel
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- Oct 13, 2011
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I have an 87 Polar Kraft 16' with a 91' Merc 4 cylinder 40 HP ELPTO tiller motor. Boat and motor are great. Seems to struggle a bit on accelerating to plane but not bad and top speed seems OK.
Question is what is the original prop? The only markings on the aluminum prop are "20 / OR 11". The 11 could almost be "//" instead of two ones. It is a three-bladed prop.
The prop diameter is about 10 1/2" or 11" and it is aluminum.
Is there any way to measure and cipher out the pitch?
Just curious in case I want to increase the hole-shot and/or top speed; or just obtain a spare/new prop.
Thanks,
BDUFFEL
Question is what is the original prop? The only markings on the aluminum prop are "20 / OR 11". The 11 could almost be "//" instead of two ones. It is a three-bladed prop.
The prop diameter is about 10 1/2" or 11" and it is aluminum.
Is there any way to measure and cipher out the pitch?
Just curious in case I want to increase the hole-shot and/or top speed; or just obtain a spare/new prop.
Thanks,
BDUFFEL