Author Topic: Model Airboat Build  (Read 17192 times)

Offline Bernd

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Model Airboat Build
« on: August 23, 2009, 08:45:58 PM »
I'm going to revive one of my old projects. I'll explain a bit why later. I'm waiting for some pics a freind took of my model boating activity this past weekend.

I had joined an rc airboat forum before I joined here and started a swamp boat build. I stoped about half way through becasue of a present I recieved one Christmas. All the explanations will have to wait until I recieve those pics from my freind.

So here's what I started. I have it as one of my web pages. I just haven't made it public yet. So without further babbeling here's the page: http://www.kingstonemodeleng.com/ModelAirboat/airboat.htm

Bernd

Updated to new web site page,
« Last Edit: August 26, 2009, 09:32:26 PM by Bernd »
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Offline rleete

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Re: Model Airboat Build
« Reply #1 on: August 24, 2009, 08:08:33 AM »
Bugger.  I've already read all the pages on your site.  No fair posting this until you have more!
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Offline Bernd

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Re: Model Airboat Build
« Reply #2 on: August 24, 2009, 08:40:08 AM »
Bugger.  I've already read all the pages on your site.  No fair posting this until you have more!

OK, how'd you find that one?  :scratch: I hadn't made it public.

You been snooping around my web site?  :lol:

After this past weekend I've had the "boat bug" bite me again. So many bugs and no way to keep them off of me.  :proj: :ddb: :proj: :ddb:

Bernd
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Offline rleete

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Re: Model Airboat Build
« Reply #3 on: August 24, 2009, 09:03:52 AM »
You been snooping around my web site? 

Of course.  Know your enemy, and all that.   :bugeye:

A friend of mine had a very cheap version back in the mid 70's.  Blow molded hull, and Cox .049 engine.  We abused it daily for a couple of weeks, until the hull gave out.  I couldn't begin to count the number of times we ran it into some solid object, repaired the damage and ran it again.  I'll bet not one part of the original balsawood structure remained when we were done with it.  It ended up having more glue & tape than plastic on the hull.
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Offline Bernd

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Re: Model Airboat Build
« Reply #4 on: August 31, 2009, 09:03:40 AM »
While this boat is in the building stages I get to keep my enthusiasim up by running my speed boat that my Dad had bought me a couple of X-mas's ago.

To run it in I had hooked up a water coolant system so I could run it in the gagrage. After about the 3rd tank of fuel the motor went south with a busted con rod. So I ordered new ones and it took over a year to finally get them. So at the begining of this August I got the con rods, installed them in the motor and I took it up to the River with me.

I did get out for one run. Came in about about 1/4 throttle and promptly hit the dock putting a nice dent in the nose of the boat. Then the follwoing day I got a chance to run several tanks through the engine and I got her all tuned up and running pretty good. A freind took lots of pictures of that run, They're posted below. Sorry no vids yet.

This past weekend I helped my freind get his boat going. His wound up with nose damge to. I got a couple of good runs in untill I flpped it over and soaked eavrything inside. It's not all water proof. So I got her going again but the the radio was conking out on me. Luckly the boat turned and came back toward me at idyl. Unfortunatly not being able to control it it hit a rock and took out falf of the plastic prop. So that ended my fun for the day. It was also getting pretty windy.

So it's off to the hobby shop and hopefully they'll have some props.

And here are a few pics.

















And that's for now. More to come later.

Bernd
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Offline Bernd

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Re: Model Airboat Build
« Reply #5 on: August 04, 2010, 08:18:59 PM »
I'm going to revive this thread with a couple of new pics.

Some of you may remember me mentioning that my dad had passed on. Well I guess I'm going to be the owner of his "toys" meaning airplanes, steam engines and steam powered boats, plus a few other things related to home machine shops.

Anyway I was over to the house today to see how mom is doing and I desided to take a quick look in the shop for an engine for this air boat. I know he has several engines laying around. Well I found two. You be the judge of which one I should use.  :coffee:





that's a Webra .61. Now if you think I need more power, how about this one.  :bugeye:





Peoblem is, I don't know the engines size. There are no markings on the engine at all to idetify the maker or size. All I know is that the prop is a 20" X 8".

Here's a couple more, comparing the size of the two engines.





Here's a comparison with a double A battery and six inch scale stood up next to the bigger engine.



Actually the Webra .61 is way to big for this boat. The boat needs an engine in the .40 range. Looks like I'll be building a bigger boat for that larger engine or should I say, "building bigger boats for those engines".

Looks like I'm up to 204 projects now, but who's counting?  :lol:

Bernd
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Offline Brass_Machine

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Re: Model Airboat Build
« Reply #6 on: August 04, 2010, 09:57:20 PM »
No replacement for displacement Bernd  :smart:

**unless you add forced induction!  :med:

 :lol: :lol:

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Offline Bernd

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Re: Model Airboat Build
« Reply #7 on: August 04, 2010, 11:42:03 PM »
Ya Eric, that maybe so, but I think I'd need to add wings to the boat. It be just to fast and top heavy. Probably would be more in the water than on top of the water,  :lol:

Bernd
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Offline Stilldrillin

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Re: Model Airboat Build
« Reply #8 on: August 05, 2010, 04:15:43 AM »
Wow Bernd!

Those engines are quite something.....  :bugeye:

I've not given such things a thought for some 50yrs. When an ED Racer 2.5cc was the one to have...... Or, a Taplin twin.

I guess things have moved on a little since then....  ::)

Thanks for showing!  :thumbup:

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Offline rleete

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Re: Model Airboat Build
« Reply #9 on: August 05, 2010, 09:14:53 AM »
Second one is a Quadra.  Popular with 1/4 scale moddlers.
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Offline Bernd

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Re: Model Airboat Build
« Reply #10 on: August 05, 2010, 09:36:37 AM »
Second one is a Quadra.  Popular with 1/4 scale moddlers.

Never thought of it as a 1/4 scale motor. Thanks Roger.

Bernd
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Offline radfordc

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Re: Model Airboat Build
« Reply #11 on: August 06, 2010, 02:12:11 PM »
Definitely not a Quadra http://quadraengines.com/Engines.pdf

Also not a Zenoah.  Could be a Sachs?

Charlie

Offline PTsideshow

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Re: Model Airboat Build
« Reply #12 on: August 14, 2010, 08:32:15 PM »
Can't help on the ident, I'm a 2 stroke weed wacker engine kind of guy. I have a 1/6 scale off road buggy with a 25cc wacker type engine in it. They call the buggies ankle breakers, at 30 pounds and doing 40 miles an hour. It can do some damage, if it hits you. I have been thinking of doing an air boat for another wacker engine I have laying around.

Looks like you are going to have a couple of great boats.
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Offline Bernd

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Re: Model Airboat Build
« Reply #13 on: August 16, 2010, 09:14:03 AM »
PT,

I've got a couple of wacker engines laying around too. I'd like to build a bigger air boat. When I saw the above big engine my dad had, I thought, Ah ha, got a big engine to build one.  :ddb:  :ddb:

Bernd
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Offline johnbaz

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Re: Model Airboat Build
« Reply #14 on: November 06, 2010, 03:56:23 PM »
Crikey!!!


That does dwarf the 10cc engine a bit :bugeye:


I have some aeroplanes in the loft (and i think a couple of boats too) but i think 10cc is the largest engine, though there's one up there that someone designed and built themselves, that has a large engine in it, i think from memory it has around a 72" wingspan...

I hope we'll see the 'bigger' airboat when you finish it :nrocks:


John :beer:

Offline Bernd

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Re: Model Airboat Build
« Reply #15 on: November 06, 2010, 09:56:55 PM »
I hope we'll see the 'bigger' airboat when you finish it :nrocks:


John :beer:


Well, at the rate I pick up new projects and start them you'll turn blue first if you held your breath.  :lol:  Honest ask any of the other memebers that know me.  :clap:

Right now my biggest project is getting the house finished that I started back in 1997 and told the wife I'd have it done in 7 to 10 years. I'm a bit behind schedule. :coffee:

I do see the light at the end of the tunnel though, but I think it's a freight train, there's a distinctive roar I hear....... or it could be the wife yelling at me again to get going and finish the house.  ::)

Bernd
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Offline Scuba1

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Re: Model Airboat Build
« Reply #16 on: March 19, 2011, 04:23:10 PM »
That looks like a Titan ZG28 to me and is way to much oomph for that little balsa construction.  But for a bigger boat I would use the Titan as is will be easier toplace the fuel tank in the boat as they have a carb that will suck up the fuel from down in the tank /// on the webra black head that is not as simple and it will lean out as the fuel level drops.
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Offline Bernd

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Re: Model Airboat Build
« Reply #17 on: March 20, 2011, 10:26:49 AM »
I wasn't planning on putting it on that boat. I'd build something much bigger. But thanks for the guess as to what that engine might be.

Unfortunaley the boat bug has died for now and all boat items sit idle for the time being. But I'm sure someday that bug will bite again.  :D

Bernd
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Offline HS93

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Re: Model Airboat Build
« Reply #18 on: March 31, 2011, 07:41:45 AM »


this may intrest you how a chap does it hear, oh and the camera was 99p plus postage and the size of a key fob, they work great

the hull is a simple springer.


http://www.youtube.com/watch?v=PRKD7ZPvt5Y

http://www.youtube.com/watch?v=_DRqfTjgVBQ&feature=mfu_in_order&list=UL

Peter
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Offline Bernd

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Re: Model Airboat Build
« Reply #19 on: March 31, 2011, 08:42:30 AM »
That's neat Peter. Thanks for posting that.

Kinda'  :poke: the bug a little. The next step on the boat is scratch building the motor drives. Why, because they are out of one of those battery powered kiddie car's.

Still need to work through a health issue before I can get back full time to all my projects.

Bernd

P.S. Thanks for keeping on  :poke: to see how the project is going.  :)

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Offline dsquire

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Re: Model Airboat Build
« Reply #20 on: March 31, 2011, 01:43:21 PM »


this may intrest you how a chap does it hear, oh and the camera was 99p plus postage and the size of a key fob, they work great

the hull is a simple springer.

.....

Peter

Peter

Thanks for posting the 2 video's. It is getting me interested and thinking (that can be dangerous).  :doh:  I would be interested in learning more about that rescue boat and about the camera etc. Do you have a link that I could follow.  :D :D

Cheers  :beer:

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Offline HS93

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Re: Model Airboat Build
« Reply #21 on: March 31, 2011, 02:29:54 PM »
If you go to this site there is a section on the type of boat he has just taped the camera on and fitted a shelf bracket with a cheap brushless motor.

http://www.modelboatmayhem.co.uk/forum/index.php?board=95.0
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Offline j45on

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