R/C Airboat Prop

A general, non-powerplant specific, discussion on airboat technology, ie., hulls, rigging, polymer, etc..
baggedsuperduty
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R/C Airboat Prop

Post by baggedsuperduty » Mon Feb 13, 2012 10:01 am

Not sure which section to put this in but im looking for a four blade prop for my 52cc airboat engine. Got the aluminum hull built but now need the prop so i can do the cage and all. The recommended prop size is 20"x10" and i need a pusher prop. I was thinking about going with a 4 blade and drop the size a little bit. Let me know if you know anything. Thanks in advance
15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

Big Block Glock
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Re: R/C Airboat Prop

Post by Big Block Glock » Mon Feb 13, 2012 10:38 am

http://www.aircraftinternational.com/Pr ... Props.aspx

Here's the place for Carbon Fiber Pusher Propellers in the sizes your looking for. I use 20" and 22" myself. :cheers: :proud: :florida: :rebel: :rebel: :rebel: :rebel:
14x8 JB 350, 2:12 Rotator, 2-Blade 80" Water Walker Maximus

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:)
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Re: R/C Airboat Prop

Post by :) » Mon Feb 13, 2012 11:27 am

The recommended prop size is for a 2 blade configuration more than likely. If u got to say 3 blade u subtract a inch in lenth and add a pitch number. I've never had any luck with the 3 blades on mine. Seems to bog it down, mine love the 2 bladfe props. Of course I'm running a 32 on mine too.
14 ft Combee. 4 seater, BPE 383 sb chevy, 2.09 stinger, 3 blade ww stump puller.
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big3country8
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Re: R/C Airboat Prop

Post by big3country8 » Mon Feb 13, 2012 11:54 am

I always ran master airscrew 3 blade pushers on mine and they make them up to a 20 I think.
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12' clendenin aluminum step with poly, 418 waterthunder, 2.68 OX, 9 blade saber, ATF rigged, nitrous outlet,, buttrax custom seats.

baggedsuperduty
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Re: R/C Airboat Prop

Post by baggedsuperduty » Mon Feb 13, 2012 12:04 pm

Well id like to run like a 4 blade so that i can go down to say an 18" x whatever i guess a 8. Reason for that is the motor is going to stick so far up in the boat and it doesnt really look proportional.
15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

baggedsuperduty
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Re: R/C Airboat Prop

Post by baggedsuperduty » Mon Feb 13, 2012 12:06 pm

:) wrote:The recommended prop size is for a 2 blade configuration more than likely. If u got to say 3 blade u subtract a inch in lenth and add a pitch number. I've never had any luck with the 3 blades on mine. Seems to bog it down, mine love the 2 bladfe props. Of course I'm running a 32 on mine too.

Ok so the recommended prop sizes are for a 2 blade and it says 20x8, 20x10 or larger. So if i wanted a three or four blade and was going to go with the middle prop which is 20x10 what size of a 3 and a 4 should i get?
15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

baggedsuperduty
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Re: R/C Airboat Prop

Post by baggedsuperduty » Mon Feb 13, 2012 12:12 pm

15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

big3country8
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Re: R/C Airboat Prop

Post by big3country8 » Mon Feb 13, 2012 12:33 pm

I always ran smaller nitro motors. I had a .91 os with a tuned pipe and I'd run a 16-7 3 blade to lug it a Lil or 14-7 3 blade to twist it up. Not sure on the bigger motors.
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12' clendenin aluminum step with poly, 418 waterthunder, 2.68 OX, 9 blade saber, ATF rigged, nitrous outlet,, buttrax custom seats.

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Big Casino
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Re: R/C Airboat Prop

Post by Big Casino » Mon Feb 13, 2012 12:51 pm

WOW!!! these things have sure come a long way from the ol' "Cox 0.49" days ......
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aherr520
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Re: R/C Airboat Prop

Post by aherr520 » Mon Feb 13, 2012 8:02 pm

I built an aluminum hull for my .60 size about 12 years ago and still never finished it, I think I need to get on the ball and do it
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Crazy Frog
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Re: R/C Airboat Prop

Post by Crazy Frog » Mon Feb 13, 2012 8:12 pm

A 4 blade pusher in that size is a rare bird...I have stacked 2 two blade props with some success...keep the same diameter and knock the pitch in half on each!

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Re: R/C Airboat Prop

Post by :) » Mon Feb 13, 2012 8:34 pm

If it says 20x10 and u want 4 blade u would go like 18x12-13. Something like that. I use masterairscrew props too.
14 ft Combee. 4 seater, BPE 383 sb chevy, 2.09 stinger, 3 blade ww stump puller.
"When the people fear their government, there is tyranny; when the government fears the people, there is liberty." Thomas Jefferson

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Re: R/C Airboat Prop

Post by :) » Mon Feb 13, 2012 8:36 pm

They r not that expensive, I'd get 3-4 and try them all..
14 ft Combee. 4 seater, BPE 383 sb chevy, 2.09 stinger, 3 blade ww stump puller.
"When the people fear their government, there is tyranny; when the government fears the people, there is liberty." Thomas Jefferson

baggedsuperduty
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Re: R/C Airboat Prop

Post by baggedsuperduty » Tue Feb 14, 2012 12:04 am

:) wrote:They r not that expensive, I'd get 3-4 and try them all..
Well i ordered a 20x10 3 blade from the website that someone posted above so i guess ill see how that goes. Where do you get yours from?
15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

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Crazy Frog
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Re: R/C Airboat Prop

Post by Crazy Frog » Tue Feb 14, 2012 7:46 am

What ever u do...don't use a woodie around the kids...they can't take the water abuse! I know when we run MABA races..the Woodies are not allowed!!...I have seen the 3 blade composite blades come a part too! :salute:

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Re: R/C Airboat Prop

Post by gary » Wed Feb 15, 2012 2:19 pm

Can you guys post up pics of your rc airboats? :cheers:

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Crazy Frog
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Re: R/C Airboat Prop

Post by Crazy Frog » Wed Feb 15, 2012 3:41 pm

I have some in my S/A gallery under CrazyFroghttp://www.southernairboat.com/photopos ... hp/cat/722

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ptr34
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Re: R/C Airboat Prop

Post by ptr34 » Wed Feb 15, 2012 6:27 pm

I run a 16x10 3blade master aircrew on my 50cc twin. Did what u said and it wouldnt turn i good
Image
Image
Last edited by ptr34 on Wed Feb 15, 2012 7:13 pm, edited 1 time in total.
if u don't run dry .then should have gotten a bassboat
tons videos on YouTube ptr34

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ptr34
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Re: R/C Airboat Prop

Post by ptr34 » Wed Feb 15, 2012 6:30 pm

Got a 5 blade prop I built that I will sell u.15x7
Image
if u don't run dry .then should have gotten a bassboat
tons videos on YouTube ptr34

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Re: R/C Airboat Prop

Post by Big Block Glock » Fri Feb 17, 2012 1:02 pm

Here are my Carbon Fiber Propellers. The 2-Blade is a 22x10, the 3-Blade is a 20x10
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14x8 JB 350, 2:12 Rotator, 2-Blade 80" Water Walker Maximus

baggedsuperduty
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Re: R/C Airboat Prop

Post by baggedsuperduty » Sun Feb 19, 2012 7:57 pm

ptr34 wrote:Got a 5 blade prop I built that I will sell u.15x7
Image
How much do you want to sell it for???
15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

baggedsuperduty
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Re: R/C Airboat Prop

Post by baggedsuperduty » Sun Feb 19, 2012 8:00 pm

Ok im having a major brain fart!!! I ordered a pusher prop but it dont seem like it will be spinning the right direction. So with the motor facing towards the back of the boat like a normal airboat do i need a pusher or a tractor?
15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

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ptr34
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Re: R/C Airboat Prop

Post by ptr34 » Sun Feb 19, 2012 10:57 pm

U need a pusher. 30 for 5 blade
if u don't run dry .then should have gotten a bassboat
tons videos on YouTube ptr34

baggedsuperduty
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Re: R/C Airboat Prop

Post by baggedsuperduty » Mon Feb 20, 2012 12:22 am

ptr34 wrote:U need a pusher. 30 for 5 blade

man for some reason it just dont look right. i guess ill have to study it some more, maybe i just got too much on my mind. I havent started the engine yet but im assuming when looking at it from the back of the boat its going to spinning counter clockwise and it seems that the prop is going to be blowing the wind the wrong direction. I bet they sent me the wrong one even though i ordered the right one.

So about your prop..... have you used it yet? Ill but it if its legit....you take paypal and can you ship it?
15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

baggedsuperduty
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Posts: 103
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Re: R/C Airboat Prop

Post by baggedsuperduty » Mon Feb 20, 2012 12:24 am

ptr34 wrote:U need a pusher. 30 for 5 blade

just dont think it will be the right size for my motor because mine calls for a 20x10 or larger for a 2 blade. what you think? i see you work for a company that knows there s**t!!!
15x8 dyna-marine vapor boat with turbo'd ls2
14x8 jw with a cammed 500 caddy swingin a 72" whirl wind wisper tip built by me, my dad, and a good buddy

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