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Scratchbuilding a 'Nam era, Program IV, Armored Troop Carrier, "Tango" boat

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  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Wednesday, May 20, 2020 8:39 PM

Oh, I know, but sometimes I wonder if I've got horses or beavers! Incidently, I'm adding electrics to the fence this summer.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    October 2019
  • From: New Braunfels, Texas
Posted by Tanker-Builder on Friday, May 22, 2020 4:58 PM

That'll do one of two things. It'll Send someone off, or totally ruin their day!

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Friday, May 22, 2020 8:48 PM

It's just a single wire with enough current to tingle and persuade .  .  .

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Sunday, May 31, 2020 11:46 AM

Well, alrighty then, All of the RC components are basically in and functional. Motors run independently and electronically tied together, both forward and astern. Rudders work, and my masthead and port and starboard running lights work. I still have to figure out how I want to put in the stern light, as I'm not installing the mine sweeping apparatus yet. I'm thinking a stern closed chock with the light on top of it .  .  . not sure though. Can't find any pictures that show that type of arrangement. 

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    September 2012
Posted by GMorrison on Sunday, May 31, 2020 12:05 PM

HooYah Deep Sea
 .  .  . not sure though. Can't find any pictures that show that type of arrangement. 
 

Brian,

You sure are right about that. Reminds me of how there are a lot of photos of steam locomotives from the front 3/4, but try to find one from the rear.

The rear view T boat photos I could find were (A) grainy, and (B) most have what looks like a fold down grating across the central part of the transom top edge. Cleats towards each rear corner.

Bunch of civilian ones, same viewpoint issue. I found one good photo of the stern of a LCM out of the water, but it was an online bankruptcy auction and the fittings were all stripped.

Fairly common practice would be to put the light on a little staff. 

Sorry, no help. I really like the project you are doing. Test tank was great. I assume she needed ballast.

 

Bill

 

Modeling is an excuse to buy books

 

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Sunday, May 31, 2020 3:11 PM

As for ballast, when she is done, she will sit light. Unfortunately there are some leaks that I can't get to for repair without pulling the armor back off. I should have done the float testing much earlier in the project. Therefore, I will be running the boat sitting a bit higher in the water than spec. As she sat in the operational test pond, there was over 25lbs. of weight in there beyond the weight of the boat itself.

My plan for today is actually casting at least 26, one pound ingots that will sit in the inner bottom. That way I can spread them out and get the hull trimmed correctly.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Thursday, July 2, 2020 11:04 AM

So, with the ballast issue taken care of, we move on. One of the things that has concerned me through this whole project is the lack of 1/12 scale pieces /parts. Through help, I found 1/12 scale .50 BMG bodies from Shapeways, but unfortunately they are for PT boats and of the wrong configuration for 'Nam era boats. None-the-less, I will probably use them. Again, with help, I am trying to get barrels made; (the correct model) and then looking at getting several cast in bronze or some other metal, using the lost wax process. As for the 20mm, I will scratchbuild it using brass tubing. That part is already started.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Sunday, September 6, 2020 7:31 PM

So, here we are, several months later, still waiting on production of barrels for the .50 caliber machine guns. It is a bit of a process so that's half of the problem. Unfortunately, the only complete 1/12 scale Browning M2 heavy barrel out there is the Tomytec kit, and I need something a bit more substantial. 

So, between the 3d stuff and the kit, the plan is to get one gun completed and then try some lost wax brass casting and manufacture several of them for this boat and possibly others. We will see. I'll keep you all posted.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    August 2020
  • From: Lakes Entrance, Victoria, Australia.
Posted by Dodgy on Monday, September 7, 2020 3:29 AM

Wow! What a project. Looking fantastic. I haven't the nerve to try scratch building, too much math and hard thinking involved. Its also been a great thread to read. I am looking forward to seeing the finished project.

I long to live in a world where chickens can cross the road without having their motives questioned

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Monday, September 7, 2020 9:10 PM

As if it were not already obvious, one of the things I've learned by building this beast, is to take great care in what scale you work in. The boat itself was not the issue, the issue come in procuring accessories, as in 'the guns' and peripherals (helm, fittings, etc.). 1/12 scale is real short of things like this, especially if you're looking for metal parts and such.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    September 2012
Posted by GMorrison on Tuesday, September 8, 2020 10:24 AM

If you thought she should sail, you could attach a removable weighted keel for pond patrols.

Wonderful project.

 

Bill

Modeling is an excuse to buy books

 

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Tuesday, September 8, 2020 10:58 AM

Oh she sails all right, but takes 25+ lbs. of ballast. The weight resides in the inner bottom below the tank decking. Actually runs pretty good; I can walk her sideways like a real LCM-6, but with all the side armor and tankage space, she's a bit of a pig. Still fun. 

As I was saying, I just need to finish up on her armament and a little more side bar armor and she'll be done.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    September 2010
Posted by retdfeuerwehr on Sunday, September 13, 2020 1:52 PM
HooYah, I see you're in Central Oregon...I'm in Albany. I truly hope you and your family haven't been adversely affected by our wildfires. I retired from San Diego Fire-Rescue after 31 years and I've never seen anything like this. Stay safe, my friend.
  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Sunday, September 13, 2020 10:01 PM

Thanks for the concern; we are well away from the fires (Powell Butte, between Bend and Prineville), just dealing with the smoke right now. Been heavy for the past two days but starting to clear a bit today, which unfortunately means that the wind is not favoring the firefighters again.

When were you in SoCal; I was there from 1988 - 2008, and some time earlier than that. Saw a good number of fires there, but lived near Imperial beach so I was fairly clear of most of them.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    October 2019
  • From: Dayton, Ohio USA
Posted by minitanker on Monday, September 14, 2020 8:01 AM

Fantastic job. My older brother helped build some "unsinkables" in San Diego during the conflict.

  • Member since
    August 2014
  • From: Willamette Valley, Oregon
Posted by goldhammer on Monday, September 14, 2020 11:18 PM

Have a guy in Powell Butte I serve with on a BLM advisory council.  He works at the museum in Prineville.  Has written 3 books on place names in central part of the state

If local history intrigues you, he's the man.

 

Been buried in smoke for a week, with at least a couple more days at least. With the wind shift and die down at least they can start to cut lines on this side of Beachie and holiday.

  • Member since
    October 2019
  • From: New Braunfels, Texas
Posted by Tanker-Builder on Saturday, October 17, 2020 2:22 PM

I Have an idea;

       I did this with my 1/96 scale Canadian Corvette . I too, had a leakage problem after the build was 90% finished. Soooo! I took some resin and mixed it thin. Then I turned the vessel every which way but loose. It took one Quart of clear resin, But the whole inside was adequately coated to stop these pesky leaks.Plus I didn't have to take anything off the hull

 I used two lead plates ( Or the equivelant, in bendable plate form). 20# and the rest was a Motorcycle 12 volt gel cell turned on it's side to ride lower in the hull inside it's waterproof box, with all the radio gear in a tray above it. There were plugs that went from the servos to the box. She rides at the designed waterline with a war loadout! 

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Sunday, October 18, 2020 4:05 PM

Here she is, ballasted, sitting slightly deeper than spec. At this point she didn't leak, so I'm calling it good to go.

And below is the ballast configuration. The ingots vary from 14.5 to 16 ounces, so that's about 20 pounds total.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Sunday, October 18, 2020 4:54 PM

TB, as the photo shows, your hull sealing method wouldn't really be effective on this hull. The 'nooks and crannies' that make english muffins so great for holding butter or jam, would play hell on getting resin to flow, especially behind the side walls of the well deck. I could go through three cans of resin and still not seal up the hull.

I do thank you for the suggestion, as I am open to fixes of my screw-ups. As I said before in this thread, prior to starting this project, it had been literally decades since I'd built a wood, RC intended hull, and this one is my very first scratchbuild, ever. So, end result, it goes at the head of the list as to "Lessons Learned".

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

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