TAMIYA M1A2 Displaymodel

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Postby kintaroukinji » Thu Jan 24, 2019 12:01 pm

Hello everyone.
I tried assembling a lower hull (road wheel) at the beginning of remodeling the Tamiya M1A2 Abram display model to a radio control. First I sprayed a metal primer and a lacquer paint (Tamiya's light sand) to the metal lower hull. Tamiya has recently released lacquer paint, and its coating seems quite strong.

Because it is made by Tamiya, it was able to build a tightly combined structure with enough strength as RC tank without any stress. In the article of Armor modeling magazine, the black cap screw which fixes the suspension mount of the road wheel was reworked since its shape and position are completely different from the real tank, but I will not stick to that considering the strength. Although it is a part that can be seen from the outside, I will keep that part inconspicuous by painting. (It is true that I have no guts to remodel to that extent.)

In rebuilding to RC next time, I am thinking about whether to go Tamiya's full operation type or TORRO, HengLong type.

The characteristics of each will be summarized as follows.
① Tamiya full operation type
• It is possible to assemble the whole with certainty. Because it is the newest RC model, strength is sufficient.
• It has the latest gun barrel stabilizer function.
• Drive gear box is Tamiya's unique differential gear
• It is difficult to change or expand the function of my choice.
• Complete turret 360 ° turning function (slip ring), smoker function is not equipped.
• Because it is necessary to purchase Tamiya's after parts in order to make it full operation, it costs as much as it costs.

②TORRO, HengLong type
• If you are seeking reasonable sound, you need a third party sound board.
Especially since M1A2 is a turbine engine, TORRO, HengLong unit sound is completely different sound.
• Modification is necessary to fix the drive gear to the lower hull. It is necessary to prepare sprockets that match the gear box for TORRO, Heng Long, and it is necessary to check whether it matches Tamiya track.
• Easy to change, add and extend my own functions.
• It can be selected widely from the viewpoint of cost. (Commercially available general parts can be used.)

In the case of Tamiya full operation, the battery or turret control unit is designed in the turret, so it would have been impossible to use slip rings that can withstand the driving motor power.

I tried to see if the spare HengLong plastic gear fits into this lower hull.
This is a state in which the gearbox is raised with aluminum color and temporarily placed (unfixed). Centering of the drive shaft seems to be no problem. If 360 ° turret turning (slip ring) is adopted, batteries and controllers must be placed in the lower hull.

Somehow it is likely that all parts will fit within the lower hull. If you use the speaker box of the full operation kit, you only have to put the battery and the controller inside the turret.

I am worrying about which to proceed with Tamiya full operation type, TORRO, HengLong type.
Painted lower hull and road wheel
HengLong drive gearbox temporarily placed in TAMIYA lower metal hull
HengLong drive gearbox temporarily placed in TAMIYA lower metal hull
Drive shaft in lower hull
Temporary placement of speaker, battery, controller in lower hull

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Postby Eastern Front » Thu Jan 24, 2019 7:34 pm

I think you will stress those gears in those gear boxes..Look for the tamiya gearbox if you can, even though the tamiya box is plastic (like the Leopard) the design is more than adequate for the stress of RC driving, its actually a transmission..

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Postby kintaroukinji » Fri Jan 25, 2019 4:13 am

Thanks for your comment. As you say, I think that it is better to use TMAMIYA 's differential gear better quality. However, in that case, TAMIYA full operation will eventually be assembled, so it seems to be difficult to add my favorite functions. Although it is possible to introduce TAMIYA gear and a third party sound controller, it may cost very expensive. I'm very annoyed as to which way to go.

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Postby kintaroukinji » Fri Feb 15, 2019 8:13 am

Tamiya M1A2 Abrams display model makes radio control possible.
For the time being, I confirmed by temporary wiring to see how far it works with TORRO's RX18 controller. Turret turning is OK. I removed the motor from the unnecessary HengLong turret turning unit and incorporated it as Tamiya's original recoil system as a barrel recoil motor, but since it has no stopper it can not be used as it is. Anyway, I plan to operate the gun barrel lifting and recoil with the servo using the sound board. Since the sound is also from RX 18, it is not a turbine engine sound, and the sound quality is not so good either. The speaker will eventually be installed in the lower hull.
DSC_1315 _544.JPG
DSC_1315 _544.JPG (82.08 KiB) Viewed 436 times
DSC_1316_01.JPG (83.23 KiB) Viewed 436 times

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Postby kintaroukinji » Wed Mar 13, 2019 4:16 am

I got a sprocket wheel from "MatoToys" to match the axle of HengLong  drive gear. The painted one on the left is of Tamiya, but the hole in the wheel has not penetrated. The right one has a hole exactly like a real tank. As this part is visible from the outside, I think whether it is important about the details whether this hole penetrates or not.
What I was most interested in was whether this Sprocket fit Tamiya's genuine track, but it matched without problems. I can not judge whether it will match if I do not finally check the driving performance, but for the time being, I feel relieved.

I installed the USM-HL-2 sound board and the TORRO RX18, but as a basic concept, remodeling is limited within the range where it is easy to remodel Tamiya genuine full operation.
Wiring was done as follows.

In Tamiya full operation, tail lights and headlights can be switched to blackout (BO) headlights, BO brake lights, BO taillights, etc. in various ways so-called camouflage mode, but this USM-HL-2 is also possible with the "light switching function". Lifting of the main gun was also possible with servo control by this boad.

Temporarily, I installed these for operation function check. The servo for main gun lifting is a old servo that was used in RC helicopter. It is about 30 years old, but works well.
All except the battery are in the lower hull.  The main switch has not been fixed yet and is left floating.

In addition to the coaxial machine gun, I am planning to make the CROWS on the turret also able to emit light.


It would be fine if TAMIYA full operation unit could be added to the machine gun light emission function, but I think it is impossible for me.
Sprocket wheel TAMIYA(left) and MATO(right)
DSC_1324_01.JPG (66.03 KiB) Viewed 221 times
DSC_1329_01.JPG (87.1 KiB) Viewed 221 times
Wiring diagam
DSC_配線1330_01.JPG (86.22 KiB) Viewed 221 times
TORRO RX18, USM-HL-2, speaker, and output terminal in Lowe hull
DSC_1327_01.JPG (87.67 KiB) Viewed 221 times
Gun lifting unit, barrel recoil unit, turret rotating unit, and main switch
DSC_1332_01.JPG (74.45 KiB) Viewed 221 times

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Postby c.rainford73 » Wed Mar 13, 2019 7:27 am

You are making great progress. Following along :thumbup:
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Postby kintaroukinji » Sun Mar 17, 2019 2:40 am

Tank you very much.

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Postby HERMAN BIX » Sun Mar 17, 2019 10:28 am

Certainly making all the dots join together Sir. :thumbup:
Over all, would you say that converting a static to an RC model is the best option ?
Or would you go with getting an RC version (of any brand) and detailing it to suit if you had your time again ?
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Postby kintaroukinji » Mon Mar 18, 2019 4:43 pm

I do not always think that converting a static model is the best option. Each person has different ways of enjoying model assembly. As for me, I think that simply assembling the RC assembly kit according to the manufacturer's instructions is not very interesting. With regard to this TAMIYA 1/16 ABRAMS kit, of course, simply assembling the genuine full operation as directed by the manufacturer will be the most reliable as the final RC finished product. That's because the manufacturer designed this kit for the most reliable finish.
Currently I will convert this display model to radio control with BEIER-Electronic's soundmodule (using TORRO's RX18). Of course TAMIYA's genuine full operation system is also very attractive, but it is easier and cheaper to use a third party soundboard while taking advantage of the quality of this model to add my favorite function . For example, it is easier to add CROWS to flash the MG, or to enable 360 ​​degree turret rotation with a slip ring. It seems more fun to modificate this kit as I like, than just assembling the default spec RC model. However, after I enjoyed this modification enough, I may purchase the necessary TAMIYA parts in the future, and make this a genuine full operation.

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