Please post pictures of the hull of your airboat.  
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All Forums >> RC Boats >> RC Boats General Discussion >> Please post pictures of the hull of your airboat.
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Please post pictures of the hull of your airboat. - 7/8/2003 8:46:33 AM   
rsieminski



Posts: 1406
Joined: 4/24/2002
From: Sarasota, FL, USA
Status: offline 		I built one out of a body board for my kids, 4,12,and 13. The 4 y/o gets a kick out of it, but the 12 and 13 y/o need a little more than 1/3 throttle to keep their attention. Any more juice and it porpoises up and down in the front. It goes better in the grass than in the water. I attribute this to the hull, uh I mean body board being totally flat. Sooooo, i'm going to build another, and want hull design ideas. Just a pic will do.
Thanks,
--Rick


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Please post pictures of the hull of your airboat. - 8/21/2003 11:47:39 PM   
gvs


 

Posts: 12
Joined: 6/23/2003
From: linköping, SWEDEN
Status: offline 		A pict of my hull, just painted...

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Please post pictures of the hull of your airboat. - 8/22/2003 12:00:36 AM   
rsieminski



Posts: 1406
Joined: 4/24/2002
From: Sarasota, FL, USA
Status: offline 		Is that flat or does it have taper on the bottom?


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Please post pictures of the hull of your airboat. - 8/22/2003 2:23:16 AM   
gvs


 

Posts: 12
Joined: 6/23/2003
From: linköping, SWEDEN
Status: offline 		it´s flat and made of fiberglas

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Please post pictures of the hull of your airboat. - 8/22/2003 12:35:06 PM   
WA8INZ


 

Posts: 45
Joined: 12/27/2002
From: Hazel Green, AZ,
Status: offline 		How do you post pictures in this forum?. I just scratch build a 43"x18" airboat and would like to see what the boat folk thought about it. Thanks in advance for your help.

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Please post pictures of the hull of your airboat. - 8/23/2003 7:06:35 PM   
gvs


 

Posts: 12
Joined: 6/23/2003
From: linköping, SWEDEN
Status: offline 		Just use the "Attach file" otion at the end of the post reply page.
There are some limitations about file size and so, you´ll find the info in the post reply page.

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       Post #: 6

RE: Please post pictures of the hull of your airboat. - 9/10/2003 2:52:34 AM   
brother



Posts: 119
Joined: 5/25/2003
From: Winlock, WA, USA
Status: offline 		Hey rsieminski, Try moving your CG forward; I built an airboat from scratch and made sure it had angled sides. It also does great on grass but I had trouble getting it to come up on plane. I had to move the CG back to take weight off the front. Sounds like your problem is the opposite of mine. Brother

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       Post #: 7

RE: Please post pictures of the hull of your airboat. - 11/12/2003 3:12:13 PM   
TERBObob



Posts: 3174
Joined: 1/12/2003
From: Oelwein, IA, USA
Status: offline 		I also built a scratch built , but plan on using it for the snow . Shes 36 long , 29 wide , 2 1/2 deep , running a 32CC Ryboi swinging a 16/10 3 blade pusher prop . In reguards to your question , I think you should state what type of engine you are using , since this will make a difference in size of boat , and also what you plan on using it for . The same design for water does not do as well on ground , or snow and vice versa .
My friend has 4 airboats he built and all are smaller and all running nitro . ( also smaller props as well )
The largest he has is a 4 cycle 80 which can not keep up with my Ryboi , on the water , or grass . ( FTR - the complete package weighs in at just over 20 pounds whereas his weighs a mere 13 . But then again , he only has that lightweight nitro motor also - LOL )
We have currently only run them on the grass and water , but awaiting the "white" stuff to hit the ground.
Also , if your CG is ok , then try adjusting the attitude of your prop , try lowering the attack angle a bit . ( make the prop angle face more down towards the front of the boat . This will stop the "lift" effect ( porpoising ) that you are getting . Do it a LITTLE at a time till you get her to stay level while full bore .

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RE: Please post pictures of the hull of your airboat. - 11/12/2003 4:17:24 PM   
WA8INZ


 

Posts: 45
Joined: 12/27/2002
From: Hazel Green, AZ,
Status: offline 		I have no pictures of the inside of the hull, what you see on my website is it (Sorry).

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RE: Please post pictures of the hull of your airboat. - 11/16/2003 6:08:39 PM   
Wile E. Coyote



Posts: 105
Joined: 3/12/2003
From: milan, ITALY
Status: offline 		Here is my airboat, O.S. 46 powered.
Great acceleration and good top speed

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RE: Please post pictures of the hull of your airboat. - 11/21/2003 3:07:49 PM   
pro27


 

Posts: 1154
Joined: 9/29/2003
From: Plainfield, WI, USA
Status: offline 		Here are some pics of some of my smaller airboats.

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RE: Please post pictures of the hull of your airboat. - 11/21/2003 3:13:52 PM   
pro27


 

Posts: 1154
Joined: 9/29/2003
From: Plainfield, WI, USA
Status: offline 		My Dumas Swamp Buggy powered with a MDS .18.

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RE: Please post pictures of the hull of your airboat. - 11/21/2003 3:17:25 PM   
pro27


 

Posts: 1154
Joined: 9/29/2003
From: Plainfield, WI, USA
Status: offline 		My Aqua Craft Air Force with a MDS Pro .40.

I have other boats, but no pictures at this time.

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RE: Please post pictures of the hull of your airboat. - 11/21/2003 10:41:24 PM   
rsieminski



Posts: 1406
Joined: 4/24/2002
From: Sarasota, FL, USA
Status: offline 		Great looking airboats!!!
I'm working on one now, off and on. I'm to the point where I need to put the supports to mount the engine, but I need to know here it should balance. I don't know wheather this is most important in ref to the all flat part or the whole thing. This is going to be a .40 sized hull. Could you guys post where the cg is in reference to the front, and then in ref to the flat part of the hull.
Thanks,
--Rick


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RE: Please post pictures of the hull of your airboat. - 11/21/2003 10:50:47 PM   
rclooney



Posts: 447
Joined: 3/11/2003
From: southport, UNITED KINGDOM
Status: offline 		do airboats scoop air under them to create lift? if so, keep of water!

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RE: Please post pictures of the hull of your airboat. - 11/22/2003 3:16:13 AM   
TERBObob



Posts: 3174
Joined: 1/12/2003
From: Oelwein, IA, USA
Status: offline 		CG of any boat is figured on where it balances out at . Doesn't matter about the flat spot or whatever . The CG is for the entire boat .
Scoop air under them to create lift ? no ..... they get on plane just as a normal boat does ( normal meaning a prop driven one ) .
( actually , after seeing a LOT of different air boats , it makes me actually wonder how many out there actually DO get on plane - )
Tomorrow , if it is not too windy out , I will video tape some action of mine and post a link here .
( homemade hull running a Ryboi 32 CC modded to the max , bored carb , swinging a 16x10 3 blade pusher prop )

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RE: Please post pictures of the hull of your airboat. - 11/22/2003 3:53:35 AM   
pro27


 

Posts: 1154
Joined: 9/29/2003
From: Plainfield, WI, USA
Status: offline
quote:

ORIGINAL: Wile E. Coyote

Here is my airboat, O.S. 46 powered.
Great acceleration and good top speed


I tried a design about 10 years ago that had the motor up front. It was a complete failure.
But then I didn't expect it to work.
Imagine if you will, an airplane fuselage, minus the rudder and stab, attach widely spaced floats
and then add the largest motor you had. It went straight just fine but would not turn worth a damn.

It would be interesting to hear how yours is set up and how well it turns.


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