Search found 147 matches

by WaterWalker
Sat Apr 13, 2013 9:17 pm
Forum: Airboat Tech
Topic: 1st Ever airboat engine...
Replies: 61
Views: 4388

Re: 1st Ever airboat engine...

To my knowledge there is no existing airboat engine. Sure there are great engines that have been adapted to successfully work on airboats, but they have derived from aircraft, automotive, and generators. If some of the best engine builders and specialists in the airboat industry like Jr. Jurnigan, ...
by WaterWalker
Sat Apr 13, 2013 8:45 am
Forum: Airboat Tech
Topic: 1st Ever airboat engine...
Replies: 61
Views: 4388

Re: 1st Ever airboat engine...

You'll spend a Million Dollars before the first casting is made. :shock: You'll need to recover the engineering, CAD, R&D and production cost...and finally make a profit. :scratch: Airboaters are frugal (cheap). :lol: The Japs and Chinks (or some other airboater) will steal it, make it cheaper ...
by WaterWalker
Fri Apr 12, 2013 10:03 pm
Forum: Airboat Tech
Topic: 1st Ever airboat engine...
Replies: 61
Views: 4388

Re: 1st Ever airboat engine...

April 12, 2013 Lake Wales, Florida OK, let’s take a run at an optimal engine designed from its beginning as an efficient airboat engine. Say we are to start designing it today and have it ready to install in 2015. Because there are many types and sizes of airboats we should pick an average use patte...
by WaterWalker
Thu Mar 28, 2013 3:07 pm
Forum: Airboat Talk
Topic: Logic Pathway to a Champion Airboat Build
Replies: 8
Views: 2149

Logic Pathway to a Champion Airboat Build

March 28, 2013 Lake Wales, Florida A Logical pathway of choices toward your perfect airboat starting with “a clean sheet of paper”. Begin by defining your personal preferences and mission for your new boat. Choices might include your expected running area, racing? riding? number of passengers? Then ...
by WaterWalker
Wed Mar 27, 2013 3:28 pm
Forum: Airboat Tech
Topic: Bonding Polymer
Replies: 78
Views: 13765

Re: Bonding Polymer

Depends on the shape. For hard chines you can put the UHMW in a press brake and form it. Otherwise about 30psi of vacuum will suck it down to the hull. I've got some pictures and will post some ASAP. Banana Boat: Interesting and important post. Shane: I saw your Vapor Hull with its bonded polymer b...
by WaterWalker
Thu Mar 07, 2013 9:20 am
Forum: Airboat Talk
Topic: COWBOY HAD A WITTLE BURFDAY YESTERDAY
Replies: 18
Views: 1821

Re: COWBOY HAD A WITTLE BURFDAY YESTERDAY

Yes, "Happy Healthly Birthday" Cowboy.

Birthdays are healthly, I have noticed that those who have the most of them live the longest. So have many more.

David Wine
by WaterWalker
Tue Feb 12, 2013 9:27 am
Forum: High Performance Talk
Topic: Ron's EcoCruse 127
Replies: 432
Views: 58274

Re: Ron's EcoCruse 127

I have had my eye on a Zenith STOL 701/750/850 for a few years now. All I see it needs is some affordable HP. Whitebear: I'd be carefull about choosing a Zenith homebuilt. My nephew up in Canada built one (a STOL) with his son awhile back. He got into trouble with it at high altitude. Above about t...
by WaterWalker
Fri Aug 31, 2012 3:23 pm
Forum: Airboat Tech
Topic: David Wine, Where are you?
Replies: 34
Views: 5707

Re: David Wine, Where are you?

David,,, I am going to put a 500 Caddy on my boat 13.6 x 7,6 Panther,,, What prop would you suggest??? Thanks in adcance,,, Cowboy Rock,,, :drunken: :rebel: :old_glory: August 31, 2012 David,,, I am going to put a 500 Caddy on my boat 13.6 x 7,6 Panther,,, What prop would you suggest??? Thanks in a...
by WaterWalker
Thu Aug 30, 2012 12:15 pm
Forum: Airboat Tech
Topic: David Wine, Where are you?
Replies: 34
Views: 5707

David Wine, Where are you?

Answer to DDSBC recent post 8-30-12 David Wine, Where are you? Never fear, I’m still here. For fun, this morning I am going to imagine that I am that propeller that you want to spin and get thrust from to push your new (to you) airboat. If you want the most thrust from me you will have to treat me n...
by WaterWalker
Tue Aug 28, 2012 3:04 pm
Forum: Prop Talk
Topic: 360s. Surprising forces are exerted.
Replies: 18
Views: 2740

Re: 360s. Surprising forces are exerted.

Glades cat: Question: Which prop rotation and direction of turn combination causes uplift or down force, as when executing a 180 maneuver? Looking from the rear of the airboat; a left turn with a left hand rotating prop will push the bow downward. As Whitebear mentions, you can check it out with you...
by WaterWalker
Tue Aug 28, 2012 1:03 pm
Forum: Prop Talk
Topic: 360s. Surprising forces are exerted.
Replies: 18
Views: 2740

360s. Surprising forces are exerted.

360s. Surprising forces are exerted. Tremendous gyroscopic forces result from rapid 360 maneuvers in a typical airboat with the prop at high power and RPMs. Ok that sounds impressive but how can one compare that to and understand how much forces and to where they are applied. My ramblings that follo...
by WaterWalker
Tue Jul 31, 2012 2:04 pm
Forum: Prop Talk
Topic: Plum runs his first new Signature prop.
Replies: 19
Views: 2518

Plum runs his first new Signature prop.

Plum runs his first new Signature prop. :cheers: Plum has just joined an elite very small group of people that has both personally built his own hollow carbon composite airboat propeller set and run it on his own personal airboat. Last weekend, Plum completed an extended test with his new Signature ...
by WaterWalker
Sun Jul 29, 2012 5:21 pm
Forum: Airboat Tech
Topic: airboat size to carry weight ratio ?
Replies: 19
Views: 2906

Re: airboat size to carry weight ratio ?

congressman wrote:Fresh water is just shy of 62.5 pounds per cubic foot.
Oops; Late in the evening, my memory failed me. I should have looked it up. You are correct and thanks. the math still works the same way just insert the correct 62.5 lbs.

Water Walker
by WaterWalker
Sat Jul 28, 2012 11:50 pm
Forum: Airboat Tech
Topic: airboat size to carry weight ratio ?
Replies: 19
Views: 2906

Re: airboat size to carry weight ratio ?

does anyone know the formula to calculate how much weight a air boat hull can hold with out sinking ???? Sure: Take the average width of your hull (say 7 feet) times the average length (say 13 feet) and multiply by the maximum depth into the water that you dare to displace (say about 8 inches max) ...
by WaterWalker
Wed May 23, 2012 9:42 pm
Forum: Airboat Talk
Topic: “Need a few Good People”, Announcement by Water Walker Props
Replies: 51
Views: 4994

“Need a few Good People”, Announcement by Water Walker Props

May 22, 2012 “Need a few good people”, an Announcement by Water Walker Props. The production of Water Walker propellers for airboats is being moved to Lake Wales, Florida. The move is currently in progress with loaded (molds & stuff) semi trucks and trailers traveling to arrive there about June ...
by WaterWalker
Tue May 22, 2012 9:18 am
Forum: Airboat Tech
Topic: Bubbles to reduce friction.
Replies: 53
Views: 4349

Re: Bubbles to reduce friction.

Back to the future: http://www.google.com/patents/US5025745?printsec=drawing#v=onepage&q&f=false Check out the above link to a US patent filed twenty years ago that fully describes air as bubbles being injected under an airboat hull. A full functioning prototype airboat hull was built and te...
by WaterWalker
Tue May 15, 2012 11:46 pm
Forum: Airboat Talk
Topic: A program to produce cheap Av Gas from Algae
Replies: 7
Views: 710

A program to produce cheap Av Gas from Algae

5/15/12 A program to produce cheap Av Gas from Algae Our “Dear Leader” stated recently that gasoline could be developed cheaply from algae. I was thinking that the liberal component of the upcoming national election that desperately needs to win the swing state of Florida might support such a projec...
by WaterWalker
Tue May 15, 2012 7:29 pm
Forum: Airboat Tech
Topic: A White Paper on “Direct Drive Automotive Airboats”
Replies: 39
Views: 7748

Re: A White Paper on “Direct Drive Automotive Airboats”

So please explain to me why you can't buy a prop that is capable of turning 4000+ rpm's?? Uhairball: Let me take a shot at explaining an answer to your question. I passed over it earlier on this post but lets give it a try. An O-540 would typically swing a 72" prop and I would assume an automo...
by WaterWalker
Mon May 14, 2012 5:08 pm
Forum: Airboat Tech
Topic: A White Paper on “Direct Drive Automotive Airboats”
Replies: 39
Views: 7748

Re: A White Paper on “Direct Drive Automotive Airboats”

BigDaddy: You have “walked me back” a bit about aircraft engines. Of course, as I said, “there will likely always be aircraft engines on airboats”. My first airboat was a commissioned aluminum 8’ X 16’ Combee built boat on an Alumitec hull with a Lycoming O-540 angle valve engine and a wood prop. Al...
by WaterWalker
Sun May 13, 2012 1:32 pm
Forum: Airboat Tech
Topic: A White Paper on “Direct Drive Automotive Airboats”
Replies: 39
Views: 7748

A White Paper on “Direct Drive Automotive Airboats”

May 13, 2012 A White Paper on “Direct Drive Automotive Airboats” There has lately been several threads on the Southern Airboat Internet Site about GM LS engine powered “Direct Drive” airboat applications with a stated purpose of competing with the Aircraft style Flat Opposed large displacement engin...
by WaterWalker
Thu Apr 19, 2012 11:53 am
Forum: Airboat Talk
Topic: Plumcrazy won't bring my boat back.
Replies: 28
Views: 3072

Plumcrazy won't bring my boat back.

I'm heading out to fly over Lake Arbuckle this morning to look for him if I can get clearance to fly in the restricted Avon Park Bombing Range that covers the lake. Plum ask's "what's more fun than an airboat?". This would come close if I can remenber which way to push the stick. http://i1...
by WaterWalker
Thu Apr 19, 2012 12:40 am
Forum: Airboat Talk
Topic: kissimmee Clean up
Replies: 100
Views: 8173

Re: kissimmee Clean up

Open letter to plum: 4-19-12 Plum: You should listen to biggun about the Budweiser boat flying. Here are some facts. The Concept boat hull has a well shaped air assist bottom that underlies a “lifting body” total shape (which is like a long airfoil). It is meant to raise a good portion of the weight...
by WaterWalker
Tue Apr 10, 2012 11:58 am
Forum: Prop Talk
Topic: Figuring prop tip speed
Replies: 12
Views: 3957

Re: Figuring prop tip speed

Prop Tip Speeds April 10th 2012 C1gator and others that have replied; You reference me in your post so I will respond with some thoughts. First about this quote from one of your responses; “The tips of a propeller do not produce lift, only drag, and as the tip speed increases, drag increases - i.e. ...
by WaterWalker
Thu Mar 29, 2012 8:26 pm
Forum: Airboat Talk
Topic: Forwarded to me by Burt Rutan
Replies: 1
Views: 426

Forwarded to me by Burt Rutan

Beyond ones capacity to just 'make up'? Begin forwarded message: “This is what democracy looks like Mr. President, Hope and Change Muslim Brotherhood style - and now you want to give them $1.5 Billion? November elections may be too late to end this travesty of a US presidency, this brotherhood with ...
by WaterWalker
Tue Mar 27, 2012 12:18 pm
Forum: Airboat Tech
Topic: Flow straightener
Replies: 54
Views: 4121

Re: Flow straightener

Skinnypockets: Thanks for the querry. No, everything that can be invented is already invented, so say the Luddites, is not true. However new real jewels are hard to find, that's true. Rotating shrouds have several enemies. First is centrifigual forces. Say many thousands of pounds of outward forces ...

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