496 BBC RECOMMENDED PROP

Airboat propeller discussion.
Cmcintosh721
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496 BBC RECOMMENDED PROP

Postby Cmcintosh721 » Tue Nov 28, 2017 1:57 pm

I have a 496 BBC approx. 600hp with a 2.55 gear box. I have a 84 whisper tip ex and just wondering what the best prop selection would be. Trying to see if there is anything better out there.

thanks

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Deano
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Re: 496 BBC RECOMMENDED PROP

Postby Deano » Tue Nov 28, 2017 2:03 pm

First question(s) would be:
How fast do you spin it, and/or at what rpm do you get your 600 hp ?
"The suppression of uncomfortable ideas may be common in religion and politics,
but it is not the path to knowledge; it has no place in the endeavor of science."
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Cmcintosh721
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Re: 496 BBC RECOMMENDED PROP

Postby Cmcintosh721 » Tue Nov 28, 2017 3:17 pm

I want to spin the motor around 5500rpms

ladyblackwater
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Re: 496 BBC RECOMMENDED PROP

Postby ladyblackwater » Tue Nov 28, 2017 5:26 pm

You have a great combination now but you could also try a 3 blade Superwide. It all depends on what you are looking for out of your boat.
Greater love hath no man, than to lay his life down for a friend.

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I am that conservative republican your momma warned you about!

Cmcintosh721
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Re: 496 BBC RECOMMENDED PROP

Postby Cmcintosh721 » Tue Nov 28, 2017 8:50 pm

I want dry ground push more then anything. I have a bigger boat I know it will never be a rocket. It runs dry now fine, but there is always more to be had somewhere

SWAMPHUNTER45
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Re: 496 BBC RECOMMENDED PROP

Postby SWAMPHUNTER45 » Tue Nov 28, 2017 8:59 pm

Time for some "S" or Super Wide blades

Cmcintosh721
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Re: 496 BBC RECOMMENDED PROP

Postby Cmcintosh721 » Wed Nov 29, 2017 10:55 am

do the super wides push better then going to the 4 blade ex. those are my 2 options just unsure what would be best. was hoping someone had compared them

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F0zzy2
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Re: 496 BBC RECOMMENDED PROP

Postby F0zzy2 » Thu Nov 30, 2017 2:31 am

I spin 4 superwides at 1900 RPM's set on the 2 mark, it pushes my barge anywhere.
moose.jpg
21740627_10211154929883981_468751006172925388_n.jpg
18X8 Silverdollar- 580 BBC- CH-4 2.67 ratio - 4 84" S Series Blade

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kwanjangnihm
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Re: 496 BBC RECOMMENDED PROP

Postby kwanjangnihm » Thu Nov 30, 2017 4:49 am

awesome hunt/airboat photos F0zzy2 :cheers: :thumbleft: :salute:
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Deano
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Re: 496 BBC RECOMMENDED PROP

Postby Deano » Thu Nov 30, 2017 7:34 am

x 2

:thumbleft: That is BadAss on both counts. :thumbright:
"The suppression of uncomfortable ideas may be common in religion and politics,
but it is not the path to knowledge; it has no place in the endeavor of science."
- Carl Sagan

SWAMPHUNTER45
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Re: 496 BBC RECOMMENDED PROP

Postby SWAMPHUNTER45 » Thu Nov 30, 2017 9:11 am

Is that a Skip Olsen build ?

Sure looks like his work....awesome pics

ladyblackwater
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Re: 496 BBC RECOMMENDED PROP

Postby ladyblackwater » Thu Nov 30, 2017 11:35 am

Cmcintosh721 yes the Superwides are designed for more puch at lower rpm's over the EX blades. The Ex blades are great blade but they do require more RPMs to get the push out of them. I will say you will most likely lose a little on top end when going to Super wides. The best way to explain it is the EX are a all around prop, they will give you good push and good top end when needed. The Super wides are more of a work horses. It definitely takes power to spin the super wides efficiently.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

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F0zzy2
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Re: 496 BBC RECOMMENDED PROP

Postby F0zzy2 » Thu Nov 30, 2017 1:31 pm

Yes that is a skip boat with some modifications, if any of you Florida folks would like to trade a a hunt just hit me up. I’d love to ride and hunt in Florida just to see what it’s all about.
18X8 Silverdollar- 580 BBC- CH-4 2.67 ratio - 4 84" S Series Blade

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F0zzy2
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Re: 496 BBC RECOMMENDED PROP

Postby F0zzy2 » Thu Nov 30, 2017 1:31 pm

Yes that is a skip boat with some modifications, if any of you Florida folks would like to trade a a hunt just hit me up. I’d love to ride and hunt in Florida just to see what it’s all about.
18X8 Silverdollar- 580 BBC- CH-4 2.67 ratio - 4 84" S Series Blade

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WhirlWind Propellers
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Re: 496 BBC RECOMMENDED PROP

Postby WhirlWind Propellers » Thu Mar 01, 2018 6:48 pm

We did get Cmcintosh721 taken care of with an upgrade in propeller sizing. I think most of the suggestions given above were right on the money. SA members seem to know their stuff. :usa:

For his BB 496 (500HP to 600 HP) with a 2.55 reduction, I would recommend either the 3-blade Whisper Tip SW in 84" diameter or the 4-blade Whisper Tip EX in standard 79.5" diameter. And for Alaska type airboating (hunting over long distances in remote areas), the 4-blade Whisper Tip SW would have been an option. ( F0zzy2 - Those were some great hunting pics from AK. :thumbleft: :thumbleft: )

Sincerely,
Patti
:proud:

Cmcintosh721
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Re: 496 BBC RECOMMENDED PROP

Postby Cmcintosh721 » Fri Mar 02, 2018 8:18 am

thank you Patti you did an amazing job I love the 4blade EX.


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