Wrong interior for M1 Abrams

[majDegurechaff]

The New detailed interior for the M1A1 is wrong in several regards. several pages in the maintenance and trouble shoot manual proves this. (links to both is provided at the end) there is already a issue reported, please go support it: Community Bug Reporting System .

First the new battery Pack in the right rear of the hull is not the normal battery, it is the backup battery when the engine is off. the normal power is supplied by a alternator in the power pack. therefor it makes no since that it’s destruction would lead to the vehicle loosing power.

on the same page, the in game “APU” in the middle of the basket is the slipring (a system that allows piping to enter the turret from the hull).

Second, the giant hydraulic pump in the left rear of the hull is also not present on the real tank.

in the preceding two diagrams the main hydraulic pump is pointed to be in the power pack, right on the engine. Also on the two proceeding two diagrams, it is visible that the engine doesn’t have the protruding green box on the left side. The Abrams also have two hydraulic pumps one in the power pack and one on the hull floor below the turret, only one need to work for the system hydraulics.

Third, the batteries at the front of the hull shouldn’t be modelled. The flatter bit is the power disruption box, and not a battery (no other MBT have is modelled by the way, the Russian MBT don’t even have batteries).

the taller bit is the hull network box, also not a battery, it controls data of systems and electronics in the hull of the tank, not the turret. (the turret have its own network box)

On the topic of which, the FCS modules should also be reduced in size to just the bit around the Gunner and the TC. The box on the loader side of the turret is TNB (turret network box). This controls data of systems in the turret, and is not a part of the FCS. Same with the box in the centre front of the basket, its a electronics rack and same as above, not a part of the FCS.

fourth, the elevation drive is wrong. while there is a elevation servo in the in game location, the actual drive is located above it as demonstrated below. Therefor, I don’t think it fair to have both the elevation dive and the servo mechanism count as the elevation drive.

Lastly, the blue box below the turret ring is the traverse servo mechanism. As the actual traverse drive is already modelled above it, I don’t think its fair to model the servo for the same system. also the bottom of the basket and the post at the rear left of the basket should have not should have no hit box, as they are both just inert metal on the real tank. it is also debatable if the post at the front left of the turret should have a hit box as it is just a hydraulic accumulator on the real tank.

sources:
M1 matnance guide: Tank, Combat, Full Tracked, 105-mm Gun, M1 (2350-01-061-2445) General Abrams Turret, Organizational Maintenance Manual - Google Play Books
ORGANIZATIONAL TROUBLESHOOTING MANUAL VOLUME II PART 1 OF 3: https://www.military-references.com/wp-content/uploads/books/tanks/usa/m1_abrams/M1_Abrams_Turret_Organizational_Troubleshhoting_Vol_II_Part_1_TM_9-2350-255-20-2-2-1_1984.pdf
Combat, Full-tracked, 105-MM Gun, M1 (2350-01-061-2445) General Abrams, Hull: content/uploads/books/tanks/usa/m1_abrams/M1_Abrams_Hull_Troubleshhoting_Manual_TM_9-2350-255-20-1-2-1.pdf

Tank, Combat, Full Tracked, 105-mm Gun, M1 (2350-01-061-2445) General Abrams Turret: Organizational Maintenance Manual, Volume 3: https://play.google.com/store/books/details?id=kwIYAAAAYAAJ&rdid=book-kwIYAAAAYAAJ&rdot=1

[MeanBROSofD72805]

Bug report it

[majDegurechaff]

here is the link to the issue: Community Bug Reporting System

[Exocetta]

quibbles:

@majDegurechaff

battery Pack in the right rear of the hull is not the normal battery

It is the “normal” batteries. Destruction of them will cause the tank to go into “protected mode”, which isn’t meaningful in terms of a game.

@majDegurechaff

the giant hydraulic pump in the left rear of the hull is also not present on the real tank.

That is the hydraulic reservoir, if it is damaged the tank will quickly lose hyd. power.

@majDegurechaff

the engine doesn’t have the protruding green box on the left side.

That is the engine air intake filter box. Rather necessary.

@majDegurechaff

batteries at the front of the hull shouldn’t be modelled. The flatter bit is the power disruption box, and not a battery

Both the Hull Distribution Box and Hull Network Box, acts “like a battery” in that damage to it will cut electrical power and cause the tank to go into protected mode and lose precision gunnery (manual mode).

@majDegurechaff

The box on the loader side of the turret is TNB (turret network box). This controls data of systems in the turret, and is not a part of the FCS.

That isn’t really true as damage to it will disable the FCS (ref the “Golden BB” RPG hit on the TNB that temporarily KO’ed an M1).

@majDegurechaff

don’t think it fair to have both the elevation dive and the servo mechanism count as the elevation drive.

Damage to one disables both.

@majDegurechaff

post at the rear left of the basket should have not should have no hit box, as they are both just inert metal on the real tank.

They support the turret floor and everything attached to it. Damage to them will allow the Turret Monster to wreck havoc if the turret is traversed and quickly stop traverse.
The hydraulic accumulator is important because it accumulates the hydraulic.

Source: 8 years as a M1 turret mechanic.

The modelling for the M1 is pretty good. What you should be complaining about is that some (andweknowwhotheyare) are still NOT modelled in as much detail (yet?)

[Mihaly_Mister_x]

good work dude!

[BOMBAY9997042-live]

One problem… that’s the wrong abrams… that’s for the 105 m1 and they have only changed the m1a1 afaik

[majDegurechaff]

I’m sure you know a lot more about the Abrams than me (I had only read over some maintenance manuals lol). a lot of these components are just labelled as their most central part or component, so only the part that’s named, or just the component itself should be included. such as the engine just being the engine, the intake filter itself is not a part of the power producing part, so shouldn’t be included. (no other MBTs have this in game) The hydraulic pump should just be the pump itself, not including other components such as the fluid reservoir. Same with the FCS should just be the computer itself etc… not that realistic, but I’m sure all MBT in the world are lined with components they wouldn’t work without, not to mention all the wiring these components have. all of which is simplified for better gameplay. To me at least, having to aim before you fire sounds better than just mouse over the target, and clicking somewhere near centre mass to guarantee a disabling shot. Also on the topic of which, there is also a great deal of double standards in game, no Russian MBTs have batteries or pumps, their components all are just the core component, and their mechanical autoloaders doesn’t block traverse, where as a inert basket do.

[Exocetta]

IRL modern MBTs are extremely “system dense”, as in any penetrating hit is going to cause bad things to happen.
Gaijin has said that they are in the process of… “moduleizing” other vehicle models as well, to include the T-xx tanks. They just can’t/aren’t rolling them all out at the same time. Which is arguably the bigger bad choice.

[majDegurechaff]

I would still like to ask though, Is the hydraulic reservoir not too big? its taking up the hull and bending the plating between crew compartment and engine compartment backwards, I recall seeing that plating be flat in the images on M1 hulls being assembled.

Also some more technical questions: If the either one of the network box is damaged, can the crew not switch the FCS to emergency mode and control the gun directly, skipping the sending commands to NB part?
and even if all above system fails, can the crew not always hand crank the turret and elevation, while manually charge the firing pin of the main gun with the master blaster?

[PantherBait]

You know… that picture shows inner bulkheads around the turret basket and electronics that aren’t present on the tank in game.

[majDegurechaff]

what do you mean? In game, there are currently only bulkheads around the two front fuel tanks.

[Exocetta]

Power runs to the HDB to the TNB to various systems. It takes down anything that requires electricity. I can’t remember if you still have hydraulic power or not. But yes, the tank can still be fought in manual “degraded” mode. But it will be like in game when the “battery” runs down.

[PantherBait]

The real life picture shows internal bulkheads on the sides of the crew compartement, which isnt present ingame

Hopefully that makes more sense. My bad.

[majDegurechaff]

Thank you for your insights. Although the “degraded” mode is still better than not being able to turn the turret at all, as it is currently in game.

[Exocetta]

Those are the hull side and rear bulkhead to the left of picture. The scalloped area are cast steel cutouts to make room for the turret ring.

[PantherBait]

Looks like its closer in than the outer wall would be. But to each their own.

[Exocetta]

Its a trick of the light. The outer diameter of the turret race overhangs the tracks a little bit.

[PantherBait]

Got it.

[Exocetta]

@majDegurechaff

“degraded” mode is still better than not being able to turn the turret at all, as it is currently in game

That is true. There is your reportable bug. GLWT vs. Gaijin. lol

[majDegurechaff]

that’s the turret ring extending over the side of the hull, the additional bulkheads would only generate more shrapnel anyway. As the turret basket is implemented right now (only initial shrapnel and the penetrator itself could damage it), it would be better if the front bulkheads around the fuel tanks were removed. That way after a penetration of the front slope, the initial shrapnel would have disappeared before reaching the basket, and not be re-generated by the fuel tank bulkheads.