M-113A1 Medium Recon Vehicle - Australian Army 1980s - build

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lmcq11
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by lmcq11 »

The AFV-Model drive gearbox is installed after removal of some resin at the front in order to align the holes as much as possible.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Continuing with the hull buildup with home made parts without interlocking joints.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
New hull sides are created, each made of 2 plasticard layers that are glued together, with the right thickness for both. The inner layer is made about 1.5mm shorter at the top and front to reproduce the support groove for the roof and glacis.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Comparison of the Ludwig and newly created part.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Notice the important groove for the roof and glacis support.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Buildup of the M113 hull is well under way.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture25.JPG (68.54 KiB) Viewed 4431 times
The Ludwig glacis is used and dry fitted, this part is a left over from the M-113A2 build where I replaced it with the Verlinden Glacis. It will not be glued but will be held in place with magnets.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Continuing on following post.
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lmcq11
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by lmcq11 »

Frontal view
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Roof support groove recreated using the 2 layers of plasticard glued together.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture30.JPG (76.64 KiB) Viewed 4430 times
The rear of the M-113, with its huge opening ramp that can be easily open and close with a servo, is crying from some interior details.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture31.JPG (94.82 KiB) Viewed 4430 times
The vision for the model is a partial interior, with rotating turret basket and lighting, up to the engine bulkhead at the front.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Regards, Louis
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43rdRecceReg
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by 43rdRecceReg »

:clap: :D
"Get your facts first, and then you can distort them as much as you please"- Mark Twain.
Niels jansen
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by Niels jansen »

Great job.
I will follow your tread because my ypr 765 has the same undercarriage with roadwheels etc.
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lmcq11
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by lmcq11 »

Thank you !

The engine maintenance hatch and grills have been built.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
As the driver's hatch need to be repositioned to the left and the periscope holes filled up because they have the wrong shape and position, I opted to replace the section completely.

M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture2.JPG (76.16 KiB) Viewed 4310 times
The left grill needs to be reworked to be accurate, references needed. As there were 80,000 M113 built, there are also some variations.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
For the headlights, Mato Sherman headlights were modified, they are of the right size.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
And installed once the right location has been determined using the 1/35 kit.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture5.JPG (97.62 KiB) Viewed 4310 times
The guards are made of thick brass strips and plastic. Notice the AFV-Model US hooks from the MLRS offering, they are a perfect match for the M113. This is a good investment as these hooks are difficult to scratch build and can be purchased for a few Euros. M1x4 bolts are used to hold them in place.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Also notice the AFV-Model MLRS low visibility light on the left, mounted on a copper tube.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Headlights on the left side
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Wires are going through the glacis and are barely visible.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Engine grills and exhaust
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Continuing on following post
Last edited by lmcq11 on Fri Dec 06, 2019 1:39 am, edited 3 times in total.
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lmcq11
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by lmcq11 »

Overview of the model today. The MRV will have a trim vane with a floating device that will hide most of the lower glacis.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Showing here the top of the AFV-Club 1/35 M113 MRV that is used as reference.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
In preparation for the turret construction and mounting, a new top has been made without the pre-drilled holes. The driver's hatch will also have a different opening device.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Regards,
Louis
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BarryC
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by BarryC »

Another modelling adventure brought to us by "Louis the Magnificent"! :clap:
Looks like another show stopper Louis! :thumbup: :thumbup:

Barry
"Details make perfection, and perfection is not a detail."
Leonardo Da Vinci
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lmcq11
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by lmcq11 »

Thanks Barry but just "Louis the Builder" would do fine.

Continuing with the build. With the delivery of the Henntec Idler adjuster and the Mato Stug III gearboxes, I have concentrated on the running gear.

I got to give it to Guido, his HennTec idler adjusters are unbreakable. This is not ideal for scratch building because I need to take them apart and modify to adapt to the subject. This is a No14 Panther adjuster that I just cut in half in order to mount on the reduced size of the M113.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
This is the AFV-Model M113 Idler wheel, with its two (provided) ball bearings and a M4x12 metal pin available on eBay for a few pennies and used as an axle. It turns like a charm.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
I installed it like that, first with its central brass reinforcement but later removed as it is in the way of the interior floor. Its really not needed on a small M113.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
The hex bolt for the arm adjustment is accessible from a groove at the bottom.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
This is a Mato Stug III gearbox that I removed the drive axle. The fact that it is retained with gears can be easily unlocked from the main shaft by hex bolts is wonderful for scratch building. A new drive axle arrangement with the required length is designed and prepared from available material.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
A new shaft of 4mm in very thick brass is made to fit the AFV-Model sprocket. As the ball bearing on the Mato gearbox are 5mm, a thin aluminum 5mm spacer tube is used to bridge the gap and goes on top of the brass axle in the gearbox. And in similar fashion as the Mato axle, holes for the hex bolt are drilled to provide a good anchor for the gears on the axle. I had earlier purchased a true 4mm metal axle rod to use but I do not know what kind of material it is made of because it is so strong that I could not even create a scratch on it with my best metal blade. So, I had to go with plan B which is a very solid 4mm and thick brass tube, it should do well.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
The new shaft is mounted on the gearbox and tested for weaknesses.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Change in plans. I earlier thought I could only do a partial interior with the Mato gearboxes, I mean without the driver's position. However, because I ordered 2 pairs of gearboxes from MatoMart in order to get the free shipping, I tried many options and I realised that if I use two right side gears, I could position them in a way to free the driver's area and get everything enclosed in the normal engine area of the M113. This is how the gearbox are installed. So now, this M113 MRV will have a full crew compartment interior.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Notice the shaft extension for the right sprocket running through the front of the driver's position, in similar fashion as the real thing. An inner 5mm flanged ball bearing is keeping things aligned.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
The height and glacis angle of the M113 allows for unusual gearbox installations and mounting arrangement. After my third M113, I think I finally found the optimal gearbox and installation for those modellers wishing to build the interior.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Continuing on following post
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lmcq11
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by lmcq11 »

The position of the gearbox is tightly calculated, thoroughly tested and the Dremel was used in two places to remove material from the metal gearbox mount in order to fit.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
To facilitate the running of the sprocket with its axle at the bottom of the hull, it is essential to get the maximum elevation possible for the gearbox to clear the torsion blades of the first road wheel, and without gears sticking out of the hull.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Everything needs to be calculated for a tight fit.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
This is now a gearbox maintenance hatch, convenient.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
AFV-Model M113 sprockets are installed.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture14.JPG (99.84 KiB) Viewed 4234 times
Assembling the AFV-Model M113 tracks requires patience. In general, the casting is good and there are some rejects but AFV-Model provides a lot of spares, which is great. Cutting these pins to the proper length and giving the end point some strength is the main issue here.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Test fitting of the newly created tracks is as expected, both tracks and sprockets run like a pig. Some links are too loose, sprocket teeth are too sharp, they also need oil. The tracks are taken off and reworked.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Detail views of the AFV-Model M113 tracks and sprockets, without their rubber pads that will be installed at the end of the build.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Regards, Louis
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lmcq11
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Re: M-113A1 Medium Recon Vehicle - Australian Army 1980s - b

Post by lmcq11 »

Hi,

On this build, every interior millimeter counts. Some room was grinded into the wall panel so that the gearbox screws can fit inside and providing a couple of extra mm for the driver's position.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Starting the interior. The driver area is still missing a few mm in width but it will look ok from the rear ramp. This is the maximum I could get.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
The building of a RC model with interior needs its own standard. While most RC fans like to have their electronics and wires cleanly laid out with strong gearboxes and huge speakers, the focus of this model is to pack as many RC features as possible while aiming for the most accurate model exterior and interior.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
This is my third M113 so the general layout of the basic interior is no surprise, however, building the Scorpion turret basket, rotation device, ammo racks and supporting equipment will be a totally new experience. Unlike a tank, the regular M113 is a battle taxi so once it is built, it can only be driven around with stops to open the rear ramp to show the interior. The M113 FSV is a combat vehicle. Operating the turret within a fully detailed interior, viewable from a large lowered ramp really combines both worlds.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture4.JPG (95.55 KiB) Viewed 4200 times
Dusty opeations
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture5.JPG (96.63 KiB) Viewed 4200 times
I had to cheat a bit to fit the TK40 on the side panel, the rear bulkhead was pushed out to the rear by a few mm.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
This will be the general planned layout of the electronics. A Clark TK40 on the left panel, Flysky received at the bottom of the rear bulkhead, the battery will be on a tray above the receiver, the rear ramp opening servo will be in front of the driver's area with a push rod towards the rear, and a small HL speaker will be inside the fuel tank at the rear on the right. Remaining free space on the front left will be used for the switch, volume control and battery connector. The front glacis and roof will be held in place with magnets, providing full access to everything.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Its important for the roof to be well supported by the bulkhead and the I beam crossing the rear of the driver's position.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Capture8.JPG (84.26 KiB) Viewed 4200 times
The tracks were reworked by re-tightening every link, then a drop of superglue into each pin end point and a thorough filing of any pin residue outside of the track did the trick. I also rounded the corners of the sprocket teeth with a file. The tracks are now strait, looking good and stable.
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
M-113 M113 M-113A1 MRV 1/16 RC Scorpion Turret Australian Army build
Next step, I will put the hull aside for a while and build the turret because I am really curious how my plan for the turret rotation system will work out.

Regards, Louis
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