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<blockquote data-quote="airshot" data-source="post: 501973" data-attributes="member: 1183"><p>First number is diameter, second number is pitch. When you reduce pitch, rpm goes up, as long as you don't exceed the max rpm recomendation for your motor your good. If to much pitch is used then the motor does not reach max rpm and it is overworked and puts excess strain on your motor. This is why a tach should be used to get the best pitch for your boat/ motor combo.</p></blockquote><p></p>
[QUOTE="airshot, post: 501973, member: 1183"] First number is diameter, second number is pitch. When you reduce pitch, rpm goes up, as long as you don't exceed the max rpm recomendation for your motor your good. If to much pitch is used then the motor does not reach max rpm and it is overworked and puts excess strain on your motor. This is why a tach should be used to get the best pitch for your boat/ motor combo. [/QUOTE]
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