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Let's say you want to build a 20ft. modern submarine out of wood....

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  • Member since
    January, 2006
  • From: NW Washington
Let's say you want to build a 20ft. modern submarine out of wood....
Posted by dirkpitt77 on Wednesday, August 15, 2012 3:14 PM

   So, the other day my box fan broke. Looking at the blades, I suddenly realized-"hey, I could take that off and make a submarine propeller!". Then I realized, I'd have to build one heck of a big sub model to fit the scale of the prop.  So, I started daydreaming about building a huge sub model out of wood.

Where would I start though?  How would you go about this? Thoughts?

  Chris

    "Some say the alien didn't die in the crash.  It survived and drank whiskey and played poker with the locals 'til the Texas Rangers caught wind of it and shot it dead."

  • Member since
    April, 2005
  • From: Piscataway, NJ!
Posted by wing_nut on Wednesday, August 15, 2012 3:42 PM

I would start by looking at the way a balsa fuselage is put together for an RC plane.  Formers, stringers and sheeting to cover.

Marc  

  • Member since
    July, 2004
  • From: Sunny So. Cal... The OC
Posted by stikpusher on Wednesday, August 15, 2012 4:13 PM

Buckets, tubes, planter pots, paper mache

 

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N is for NO SURVIVORS...

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  • Member since
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  • From: Lowell City, Mars
Posted by Cadet Chuck on Wednesday, August 15, 2012 6:33 PM

I don't believe I would try something like that....

Computer, did we bring batteries?.....Computer?

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  • From: Rothesay, NB Canada
Posted by VanceCrozier on Wednesday, August 15, 2012 6:50 PM

I'd start by buying a house with a 2-car garage...

On the bench: Airfix 1/72 Wildcat; Airfix 1/72 Vampire T11; Airfix 1/72 Fouga Magister

  • Member since
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  • From: Lowell City, Mars
Posted by Cadet Chuck on Wednesday, August 15, 2012 8:11 PM

No, three car garage....

Computer, did we bring batteries?.....Computer?

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  • From: T-34 Hunting
Posted by TheWildChild on Sunday, August 19, 2012 12:28 AM

LOL the way you worded it, it reminds me of a crazy sales pitch you would hear in a comedy, something you would say with a "you are going to think im crazy, but just go with me on this" look lol Yes . i saw a thread somewhere online, cant remember where though, of a man who did something similar.... he built a 1:1 Tiger 1 turret out of wood..... perhaps finding the thread (Google should help) would offer you a good idea of where to start?

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Whats next? Aircraft for Ground Attack Group Build

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Posted by Compressorman on Sunday, August 19, 2012 7:42 AM

You build a model ship hull by finding cross sections for specific sections of the hull. You will need quite a few of them, the more the better. They are placed on a keel of some sort. This will kind of look like a snake skeleton with the keel being the spine and the hull cross sections as ribs. You will then fill between the sections with something, foam perhaps. And then carve away everything until your foam matches nicely to the cross sections. Hope this made sense

Chris

  • Member since
    November, 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Monday, August 20, 2012 10:07 AM

I agree with someone else who said make it like an RC airplane, only NOT out of balsa.  That thing will have so much buoyancy anyway that you should use hardwood- even so you'd need a ton (literally) of ballast.  If you want a modern sub, I'd make it out of a piece of the largest sewer pipe you can find. For an older sub, you need a fancier structure, with ribs, longerons and sheeting. You'd need a very big lathe for some of the lathe work you'd need.  And of course a very large trailer to take it to the lake.

Don Stauffer in Minnesota

  • Member since
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  • From: T-34 Hunting
Posted by TheWildChild on Monday, August 20, 2012 12:50 PM

and also, i recall a documentary on Pearl Harbor, where they were testing a picture to see what was in the water near battleship row by building a scale midget sub and placing it in a lake roughly scale to Pearl, took pictures from the scale distance, etc, etc to test the the whole "did a midget sub really make it into Pearl" thing, they build a scale midget sub that was close to 15-20 feet, and covered the build pretty good if i remember right.... if you  can dig that up it may help too.

1/35 XM77  "Sledgehammer", 1964 Chevy Impala Derby Car

Whats next? Aircraft for Ground Attack Group Build

"I dont just tackle to make a play, I tackle to break your will." -Ray Lewis

"In the end, we're all just chalk lines on the concrete, drawn only to be washed away"- 5 Finger Death Punch

"Ahh, my old enemy.......STAIRS"- Po, Kung Fu Panda

  • Member since
    September, 2011
  • From: Medford, OR
Posted by OMCUSNR on Friday, August 24, 2012 5:41 PM

Don,

That size "sewer pipe" can get pretty spendy, pretty fast.  For a 20' hull, you'd be looking at about a 36" dia pipe to get close to an LA class SSN.  What you might find in that size would be HDPE, most of which is corrugated.  You  can get some smooth wall, though.   www.plasticpipe.org/.../high_density_polyethylene_pipe_systems.pdf

Sanitary lines usually are ASTM 3034 PVC, and are mostly under 15".  HDPE is used for storm systems, and in the last 10 years has pretty much replaced Corrugated Metal Pipe (CMP) or RCP (Reinforced Concrete) due to cost & ease of installation.

HTH,

Reid

Grumman Iron Works Fan.

"Don't sweat the small stuff.  And.... it's ALL small stuff, until you hear INCOMING!!!!!!"

  • Member since
    August, 2012
Posted by Winetanker on Friday, August 24, 2012 8:22 PM

TheWildChild

and also, i recall a documentary on Pearl Harbor, where they were testing a picture to see what was in the water near battleship row by building a scale midget sub and placing it in a lake roughly scale to Pearl, took pictures from the scale distance, etc, etc to test the the whole "did a midget sub really make it into Pearl" thing, they build a scale midget sub that was close to 15-20 feet, and covered the build pretty good if i remember right.... if you  can dig that up it may help too.

I saw that too....I think it was one the Military Channel...

You could probably use OSB board for the formers, and 2x2's for the stringers.

For the covering.....aluminum???????? 

....working my way up the airbrush learning curve......

  • Member since
    August, 2005
  • From: Mansfield, TX
Posted by EdGrune on Saturday, August 25, 2012 8:18 AM

In a chapter of "Building Model Warships of the Iron and Steel Eras" edited by Peter Beisheim,  Stephen Henninger describes his scratchbuild of the 12-foot long (1:100) scale USS Enterprise CVAN-65 which is now on display at the Smithsonian's Air & Space Museum.

He used particleboard (chipboard) for the keel and frames and skinned the hull with 1/16 birch plywood.

He chose the particleboard because it was economical, stable, strong, and available worldwide.   He built three halves of the hull while he was deployed by NASA to ground tracking stations in South America and Africa.   He completed the first half during and following his first assignment then packed it away when he went on his second.   He finished the aft half, then with more time on station and nothing to do he rebuild the forward half.   When he was returning home he had to further break the hull into three-foot sections to fit into space available in the shipping container for his other household goods.

He describes using 10 4'x8' sheets of 1/2-inch particle board to make the frames of the first two halves and dulling several bandsaw blades during the seven day process.  The frames were aligned on a steel rod at a spacing of 2.83 inches and faired by eye.

  • Member since
    March, 2016
Posted by ardvark002 on Tuesday, April 12, 2016 10:06 PM
ed. if you get this.how about large drain pipe. i used my old box fan blade to convert my propane int the yellow submarine.
  • Member since
    September, 2012
Posted by GMorrison on Tuesday, April 12, 2016 11:16 PM

Surely you remember, right next to the ads for Sea Monkeys...

  • Member since
    June, 2014
  • From: New Braunfels , Texas
Posted by Tanker - Builder on Friday, April 15, 2016 1:41 PM

Hey " G "

    Is that you in the sub ? Yeah , I remember those things .If you remember there was for a while on one of the pages nearby an ad for your own spaceship too .Pretty much the same idea !  T.B.

  • Member since
    August, 2014
  • From: Willamette Valley, Oregon
Posted by goldhammer on Friday, April 15, 2016 1:52 PM

At one time I thought of doing an 18-20 foot Gato for a couple of lakes around here......would have rattled the bejeepers out of the fishermen trolling to surface alongside.....  Just way to involved for my abilities, even to do a surface only version.

  • Member since
    July, 2014
  • From: Meridian, ID
Posted by modelcrazy on Friday, April 15, 2016 4:09 PM

Winetanker

 

 
TheWildChild

and also, i recall a documentary on Pearl Harbor, where they were testing a picture to see what was in the water near battleship row by building a scale midget sub and placing it in a lake roughly scale to Pearl, took pictures from the scale distance, etc, etc to test the the whole "did a midget sub really make it into Pearl" thing, they build a scale midget sub that was close to 15-20 feet, and covered the build pretty good if i remember right.... if you  can dig that up it may help too.

 

 

 

 

I saw that too....I think it was one the Military Channel...

You could probably use OSB board for the formers, and 2x2's for the stringers.

For the covering.....aluminum???????? 

 

Mysteries of Pearl Harbor was the name of the show.

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Posted by 7474 on Sunday, May 29, 2016 1:24 PM

I had started working on a sub as a basis for a ROV and another one to haul things to an island in the river that I go swiming in (for sodas and snacks and other things I didn't want to get wet). Built a rib and stringer frame, foam between the ribs, sanded until it was shapped, then covered in fiberglass. After lots of filler, sanding and painting I had my subs.

  • Member since
    June, 2014
  • From: New Braunfels , Texas
Posted by Tanker - Builder on Monday, May 30, 2016 2:34 PM

Well;

   Talk about teasing boaters , try to imagine this ,0630 am . Nice green metallic bassboat , two fishermen . Made a hell of a wake in a no wake zone to get where they were . Along comes a Flower Class 1/72 scale Corvette .

   Fitted with trainable fire nozzles that worked . Surprised , getting shot by water from a model boat .You can bet they were ! Moved away from there slowly , constantly being harassed by these little water nozzles on this little boat . Tried to ram it twice , No Dice ! , and never came back either .        T.B.

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