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How much change 1.81 to 1.65?

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How much change 1.81 to 1.65?

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Old 04-18-2009 | 05:44 PM
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offshorefisher
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Default How much change 1.81 to 1.65?
Just found a deal on a pair of 1.65 Bravo 2 X drives. How much will dropping down from my 1.81s change my wot rpm and how much will I have to prop down? Thanks for any input.
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Old 04-19-2009 | 10:31 AM
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what pitch and rpm are you running with the 1.81's ???
what are you getting for speed.???
if you can tell us these #'s we could give you an Idea.
Larry
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Old 04-19-2009 | 11:15 AM
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offshorefisher
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Originally Posted by hoozeyurdaddy
what pitch and rpm are you running with the 1.81's ???
what are you getting for speed.???
if you can tell us these #'s we could give you an Idea.
Larry
Getting about 26knots with the 1.81s at 3400rpms with heavy cupped 21pitch three blade ss Powertechs.
Thanks guys.
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