RC 1/16 Sherman T31 Demolition tank - LMCQ11 Build

This section is for you to give a commentary / build log of your Tamiya tank. Remember - lots of pictures please!

Postby lmcq11 » Thu Mar 31, 2022 6:10 pm

Hi,

Time to start a new project. This one will be easier than the past few builds, it will be a Tamiya M4A3E8 Sherman conversion.

Here is the Sherman T31 Demolition tank prototype that i want to reproduce in 1/16 with RC features. I am guessing someone in the US Army was jealous of the Sturmtiger and wanted a tank that could do something similar.

The main turret armament is composed of two revolver type T94 7.2 inch rocket launchers in the side pods that can hold 5 rounds each, with 20 more rockets stored in the turret and that can be reloaded from inside the vehicle. The rocket launcher pods can elevate. There is a dummy and fixed 155mm gun pointing forward to make it look more scary. There is a total of 3 ball mounted Browning M1919 machine guns, and a Browning M2 on the commander's cupula. It's impressive.

Capture1.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture1.JPG (88.73 KiB) Viewed 1217 times


Notice the holes for the rocket back blasts and back door for reloading.

Capture3.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture3.JPG (93.63 KiB) Viewed 1217 times


The TC has a late Sherman style cupola.

Capture4.JPG
RC 1/16 Sherman T31 Demolition tank - Build


It came too late to be produced during the war and after some technical issues were found during trials at Aberdeen regarding the rocket revolving basket mechanism, the project was cancelled and the unique prototype was sadly destroyed.

Capture5.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture5.JPG (94.29 KiB) Viewed 1217 times


The tank was armed with thirty T-37 demolition rockets, a modification of a naval anti-submarine rocket. It had a range of 212 meters.

Capture6.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture6.JPG (41.1 KiB) Viewed 1217 times


I do not want to repro the prototype as is, i prefer a "what if" production vehicle. To make it even more impressive, i also plan to equip the vehicle with an M1A1 bulldozer blade.

Capture6a.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture6a.JPG (47.52 KiB) Viewed 1217 times


Capture6b.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture6b.JPG (61.26 KiB) Viewed 1217 times


Because of the M4E3E8 HVSS suspension, the M1A1 blade is wider than the M1 and has a different mount.

Capture7.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture8.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture8.JPG (65.43 KiB) Viewed 1217 times


For the conversion, i will use an old Tamiya M4A3E8 HVSS that i built as a young man in the early 1990s and kept on the shelve ever since. I always found the small turret with the 105mm gun to be simplistic and quite unimpressive. I already converted two of these Tamiya Shermans to the 76mm turret with the Nick Aguilar conversion, i need something new.

Capture9.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Continuing on following post.
Last edited by lmcq11 on Sun Apr 24, 2022 7:19 pm, edited 3 times in total.
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby lmcq11 » Thu Mar 31, 2022 6:21 pm

The old turret will be discarded.

Capture10.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Looking inside, the old Tamiya has a decent gearbox, but the T-01 board only allows the tank to be driven around, it has no turret or other functions. There are people that still pay $500 for these on eBay.

Capture11.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture12.JPG
RC 1/16 Sherman T31 Demolition tank - Build


For the build, i will be helped by the BoldDivision 1/35 resin conversion kit to extrapolate shapes and dimensions for 1/16 scale.

Capture13.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Resin parts are well casted.

Capture14.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The model is simple and the core components can be built in less that 90 minutes, minus the fragile details that can be avoided for the 1/16 build as reference.

Capture15.JPG
RC 1/16 Sherman T31 Demolition tank - Build


It comes with Master M1919 metal gun barrels, a nice touch. A third one for the hull mg would have been nice though for consistency.

Capture16.JPG
RC 1/16 Sherman T31 Demolition tank - Build


A 1/35 kit is excellent to study, and see where there could also be some issues to correct for the 1/16 build. I am noticing the rocket barrels seems a bit too small in diameter.

Capture17.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture18.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture18.JPG (73.09 KiB) Viewed 1212 times


Capture19.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture19.JPG (77.12 KiB) Viewed 1212 times


Continuing on following post
Last edited by lmcq11 on Thu Mar 31, 2022 6:38 pm, edited 2 times in total.
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby lmcq11 » Thu Mar 31, 2022 6:32 pm

Capture20.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture20.JPG (73.76 KiB) Viewed 1211 times


Capture21.JPG
RC 1/16 Sherman T31 Demolition tank - Build


This is the Vandra M1 bulldozer 1/16 resin conversion kit. As usual, it comes with issues. Notice how the spade is warped and has a broken section.

Capture22.JPG
RC 1/16 Sherman T31 Demolition tank - Build


30 seconds in the microwave does fix the warping.

Capture23.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture23.JPG (79.84 KiB) Viewed 1211 times


Capture24.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The M1A1 mounts will need to be scratch built. God knows what else will need to be redone.

Capture25.JPG
RC 1/16 Sherman T31 Demolition tank - Build


As i need the wider M1A1 bulldozer because of the HVSS suspension and tracks, i need to convert it by adding 2.28mm in width to the blade.

Capture26.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Machine gun accessories.

Capture27.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Time to use my new Elmod Fusion Pro. As a builder, electronics are not my specialty and i have been using Clark boards for years. It looks a bit complicated but i will figure it out.

Capture28.JPG
RC 1/16 Sherman T31 Demolition tank - Build


This is it, the build is starting.

Regards, Louis
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby tankme » Fri Apr 01, 2022 8:28 am

That is definitely not your ordinary subject for a build. I'm sure you will make that ugly machine look great... :)

tankme
Staff Sergeant
 
Posts: 941
Joined: Tue Oct 31, 2017 4:51 pm
Location: Elgin, TX

Postby Kaczor » Fri Apr 01, 2022 8:43 am

Interesting project. Shermans have some crazy versions ;)
phpBB [video]
User avatar
Kaczor
Staff Sergeant
 
Posts: 982
Joined: Fri May 18, 2018 9:58 am
Location: Ciechanow, Poland

Postby HERMAN BIX » Fri Apr 01, 2022 11:56 am

I just cant get past how "out-there" it is !!
Great concept, possibly ahead of its time, but God !! :wtf: What a hideous looking AFV 8O
I get that form-follows-function, but its juuuuuust uuuuugly !!!

That aside, cant think of a better reason to convert a boring 105 Sherman to something with a bit of "ring-a-ding-ding"!! ;)
User avatar
HERMAN BIX
Colonel
 
Posts: 8446
Joined: Sun Jan 12, 2014 1:15 am
Location: Gold Coast,Australia

Postby EAO » Fri Apr 01, 2022 4:05 pm

Louis,

That is one butt ugly tank! It looks almost Russian in the shape of the turret! Will be interesting to see how you handle the build. I've seen Kaczor's video before, but it still blows my mind! I guess it speaks of the solidness of the chassis to be able to come up with so many alien configurations!

Also, totally blown away by your "microwave modeling" skills! If I tried that the microwave would need replacing and the house would smell like a scorched cat! 8O :wtf: :haha:

Cheers,
Eric.
User avatar
EAO
Warrant Officer 2nd Class
 
Posts: 1154
Joined: Sun May 10, 2020 5:29 pm
Location: Central Missouri, U.S. of A.

Postby Herr Dr. Professor » Sat Apr 02, 2022 7:46 pm

Among the dozen or so Sherman books I have, I do not recall seeing that hilarious beast! I'd bet it's in some book, but I just missed it. Well, I am a bit run down (not COVID) and its snowing like crazy, so it's time for a lazy book search tonight. Meanwhile, you will up to your usual magic. This will be an absolute blast to see, Louis!
User avatar
Herr Dr. Professor
Warrant Officer 2nd Class
 
Posts: 1381
Joined: Mon Apr 22, 2019 10:48 pm
Location: Southern Wisconsin USA

Postby lmcq11 » Sun Apr 03, 2022 10:57 pm

Hi everyone,

Thank you all for the encouragements. Yeah, it's not pretty but its impressive, that why i decided to build it. I already built most of the pretty Sherman based vehicles.. so this is what i am down to in order to keep interest in the M4. I like this one because the armament is really special.

The T31 should be seen as an American attempt to create a US KV-2 and Sturmtiger equivalent. If the war had lasted longer and it had been produced, it would have given amazing firepower support to the US troops.

Starting with the turret, i selected a cheap Heng Long turret base for modifications, keeping my Tamiya 105mm turret intact, just in case i decide to reuse it one day.

Capture.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The Heng Long turret base just need two roundels to adapt it to the Tamiya upper hull. One to fit the turret ring of the hull as shown below, and one overlayed roundel over the lips to hold the turret in place for a smooth rotation.

Capture2.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The T31 turret structure needs a round flat base like this.

Capture3.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The cast turret core is done in 1.5mm plasticard in a few hours of work. Its shape is quite simplistic with flat areas, few angles and rounded corners.

Capture4.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The frontal area is completed. The back is left open until the elevation system is in place. Because the turret will have no recoil system, the electronics inside will be very simple, one servo for elevation and large LEDs on the rocket launcher tubes.

Capture5.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture6.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The turret structure is deposited on the base to check things out. You can already see the turret shape similarities between the T31 and the Russian KV-2. If the T31 had been armed with a large caliber howitzer instead of side rocket launcher pods, the resemblance would have been striking.

Capture7.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Next step, the rocket launcher pods and the elevation system.

Regards, Louis
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby B_Man » Tue Apr 05, 2022 1:52 am

That is a very interesting subject Louis and not something I have come across before. When I saw the date you started the thread I assumed it was an elaborate April Fools. :D
User avatar
B_Man
Corporal
 
Posts: 445
Joined: Fri Apr 03, 2009 1:23 pm
Location: Yass, NSW, Australia

Postby lmcq11 » Wed Apr 06, 2022 5:28 pm

B_Man wrote:That is a very interesting subject Louis and not something I have come across before. When I saw the date you started the thread I assumed it was an elaborate April Fools.

It's a vehicle i noticed in the 1/35 scale hobby world and it should be pretty unique in 1/16 scale RC. I like to build 1/16 models i have not seen before.

This post is for the rocket pod structure.

The base of the pods.

Capture.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Armed with 14mm outside diameter aluminum tubing, and matching the 7.2 inch rocket calibre on the inside. The installation of the pods needs to be done before the pods are enclosed.

Capture2.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Pod elevation is manually tested for integration, looking good.

Capture3JPG.JPG
RC 1/16 Sherman T31 Demolition tank - Build


For rocket tube flash, i created 4 bundles of three 5mm LEDs, white for the front, yellow at the rear of the tube.

Capture4.JPG
RC 1/16 Sherman T31 Demolition tank - Build


LEDs and wiring installed, and tested.

Capture5.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Servo elevation system for the central shaft is created with a simple design.

Capture6.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Pods are installed and firmly attached to the central shaft.

Capture7.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Central shaft and LED wiring are pre-positioned for the enclosure of the pods.

Capture8.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture8.JPG (88.03 KiB) Viewed 948 times


The pods are enclosed in two steps, bottom first and then top, with drying time in between.

Capture9.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The 1/16 turret core shape compares well to the 1/35 kit.

Capture10.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Continuing on following post
Last edited by lmcq11 on Wed Apr 06, 2022 5:38 pm, edited 2 times in total.
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby lmcq11 » Wed Apr 06, 2022 5:34 pm

Once the elevation servo will be installed and electronics tested, i will be able to complete the rear of the turret.

Capture11.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Depositing the T31 turret on the Sherman hull for a first good look of the basic shapes of the vehicle.

Capture12.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Maximum rocket pods elevation.

Capture13.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Minimum rocket pods elevation.

Capture14.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Frontal view.

Capture15.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Side views.

Capture16.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture17.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture17.JPG (93.89 KiB) Viewed 948 times


Next step is to reproduce the cast metal effect, and add the various details on the turret structure as seen on the 1/35 kit and reference pictures.

Capture18.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Regards, Louis
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby Ecam » Wed Apr 06, 2022 6:08 pm

I'm so impressed with your speed! Do you sleep? And still the work is excellent. Keep it up.
User avatar
Ecam
Corporal
 
Posts: 278
Joined: Sun Jul 13, 2014 6:30 pm
Location: Lake of the Ozarks, USA

Postby lmcq11 » Wed Apr 06, 2022 10:42 pm

Ecam wrote:I'm so impressed with your speed! Do you sleep? And still the work is excellent. Keep it up.

Retired guy, I do modelling for about 3 hours per day, sometimes a bit more if I am in the middle of something tricky.
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby BarryC » Thu Apr 07, 2022 12:45 am

Ecam wrote:I'm so impressed with your speed! Do you sleep? And still the work is excellent. Keep it up.


I have always marveled at his ability to accomplish great work in such a seemly brief period of time.
:O
Barry
User avatar
BarryC
Warrant Officer 1st Class
 
Posts: 2235
Joined: Sun Jan 03, 2016 12:43 pm
Location: Savannah, GA. USA

Postby B_Man » Thu Apr 07, 2022 1:56 am

BarryC wrote:
Ecam wrote:I'm so impressed with your speed! Do you sleep? And still the work is excellent. Keep it up.


I have always marveled at his ability to accomplish great work in such a seemly brief period of time.
:O
Barry


Me too. Ive been plugging away at some basic photo etch detail on the rear of a jagdpanther for months now and I'm still not quite finished :haha: . I'm looking forward to being retired one day and having a some free time on my hands.
User avatar
B_Man
Corporal
 
Posts: 445
Joined: Fri Apr 03, 2009 1:23 pm
Location: Yass, NSW, Australia

Postby EAO » Fri Apr 08, 2022 9:00 pm

Pure magic, Louis! Blown away...again! :crazy: :clap: :thumbup:

Cheers,
Eric.
User avatar
EAO
Warrant Officer 2nd Class
 
Posts: 1154
Joined: Sun May 10, 2020 5:29 pm
Location: Central Missouri, U.S. of A.

Postby lmcq11 » Mon Apr 11, 2022 9:50 pm

Thank you Ecam, Barry, Bman and Eric !

Hi everyone, continuing with the build. Here is the turret, almost complete, except the M2 machine gun and the antenna mounts.

Elevation servo is installed and tested. It is a simple design but very efficient, strong and smooth. Elevation is assigned to independent channel and VRB Knob on the remote.

Capture1.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The heavy cast metal effect is done with Testors putty, put on by unevenly massaging the plastic surface with putty using a finger. After drying, the surface is sanded, providing this uneven heavy cast metal effect that i personally appreciate and seen in references.

Capture2.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture3.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The G sprue of the Tamiya M-26 Pershing kit, purchase separately at Axel, is providing some goodies, such as the commander's cupola and M2 mount.

Capture4.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The base seen in reference is done using roundels created with a roundel cutter.

Capture5.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The cupola and the back doors are installed.

Capture6.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Here with M2 machine gun mount and other details added to the top.

Capture7.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The rocket launchers have a uneven contour section, not sure how to call it. The basic material is 2 layers of 4mm thick plasticard glued together, then the basic shape is carved with the Dremel.

Capture8.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Then extensively polished with a hand file, the last ring is added on top and thoroughly finetuned before installing on the rocket pods with the remaining details.

Capture9.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Basic shapes for the periscope. The fragile periscope guards have not been done yet.

Capture10.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Continuing on following post.
Last edited by lmcq11 on Mon Apr 11, 2022 10:01 pm, edited 3 times in total.
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby lmcq11 » Mon Apr 11, 2022 9:57 pm

Capture10a.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The material for the ball mount for the Browning M1919 machine guns is done with overlaid plastic tube glued together, then shaped with Dremel and finetuned with nail files.

Capture11.JPG
RC 1/16 Sherman T31 Demolition tank - Build


The tips of the Aber M1919 brass barrel are modified to accept a fibre optic through a brass tube and then armed with a 5mm yellow LED.

Capture12.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Capture12.JPG (52.02 KiB) Viewed 806 times


The ball mounted machine guns and the dummy 155mm barrel are installed.

Capture13.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture14.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture15.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Overview of the mostly completed turret.

Capture15a.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture16.JPG
RC 1/16 Sherman T31 Demolition tank - Build


At maximum elevation.

Capture17.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture18.JPG
RC 1/16 Sherman T31 Demolition tank - Build
Last edited by lmcq11 on Mon Apr 11, 2022 10:04 pm, edited 1 time in total.
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Postby lmcq11 » Mon Apr 11, 2022 9:59 pm

A few more pictures.

Capture19.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture20.JPG
RC 1/16 Sherman T31 Demolition tank - Build


Capture21.JPG
RC 1/16 Sherman T31 Demolition tank - Build


That's it for now. Next step, the Sherman hull and the M1A1 bulldozer blade.

Regards, Louis
User avatar
lmcq11
Warrant Officer 1st Class
 
Posts: 2066
Joined: Mon Dec 19, 2016 8:42 pm
Location: Quebec, Canada

Next

Return to Tamiya Builds

Who is online

Users browsing this forum: No registered users and 1 guest