big boat big block

Airboat propeller discussion.
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big boat big block

Postby BWXSTREAM » Mon May 01, 2017 8:02 pm

i have a 20 foot boat estimated wight around 5000 a three blade 82" whirlwind super wide on a century drive 2;1 and a 572 bbc stock can any one tell me the pitch to rpm i should be running to get up on pad with 2000 lbs of fish in the hull after tournament? i can only get it up to 4000 rpm now and it has a hard time getting up the blades are pitched a ways past setting C in the A B C options after 100 fish she just plows and dosnt get planed out

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Re: big boat big block

Postby OLD MAN JONES » Tue May 02, 2017 6:18 pm

You need to take some pitch out of the prop and let it turn 4,500 at the motor. you will notice a substantial increase in top end thrust
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Re: big boat big block

Postby pipedog » Tue May 02, 2017 8:12 pm

Just curious, what kind of fish are you catching??
Palm Beach open hull 13'9" with 6.0 F.I. LS - Ox Box and a 3bld "R"

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Re: big boat big block

Postby kwanjangnihm » Tue May 02, 2017 9:04 pm

pipedog wrote:Just curious, what kind of fish are you catching??

is this your boat?
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