MAN Trucks Discussion Thread

[gfr43012]

The 16 speed ZF doesn't belong to New TGX so it won't return, however there should be a more powerful version of Tipmatic 12 30 OD with torque converter and higher gear ratio. I shared the data with devs, will see how it goes.

I'm curious what the gearbox specs are exactly.
Is it a version with only the torque converter and diff ratio amplified on the existing Tipmatic 12 30 OD?
Or is the gear ratio itself a separately manufactured version?

[Eugene]

@gfr43012 I conducted research of trucks for sale. Pretty much all heavy-haul spec TGX TG3 and TG2 (2019 model year, with same driveline as TG3) are equipped with TipMatic 12 30 OD, which is renamed ZF Traxon Torque, data sheets for it are available online. Gear ratios in it are same as basic Traxon, but there is torque converter with 1.59 ratio.
As for differential ratio, I suggested i=4.00 (usually installed on 120t GVM trucks) or 4.33 (usually installed on 250t trucks).

[gfr43012]

@gfr43012 I conducted research of trucks for sale. Pretty much all heavy-haul spec TGX TG3 and TG2 (2019 model year, with same driveline as TG3) are equipped with TipMatic 12 30 OD, which is renamed ZF Traxon Torque, data sheets for it are available online. Gear ratios in it are same as basic Traxon, but there is torque converter with 1.59 ratio.
As for differential ratio, I suggested i=4.00 (usually installed on 120t GVM trucks) or 4.33 (usually installed on 250t trucks).

I implemented a similar transmission in the game and tested it myself. The traction of the transmission was very good, but the transmission in the game made too many meaningless shifts.
Is there any possibility that this transmission will actually be added in-game?
Hopefully, these issues will be resolved if there is any further possibility.

And if this transmission isn't planned to be added to the game, this new 2020 MAN 8x4/4 tractor might be the worst truck ever in the game.

[The_SimTrucker]

I did not know that the heavy-haul spec did use a ZF with a torque converter for easy/smooth starts. That makes all the difference when starting with a heavy load uphill. So the best option would be to include a version of the ZF Traxon with the Torque module, but only for the 8x4 chassis.

Code: Select all

SiiNunit
{
accessory_transmission_data : zf_tt3021so.man.tgx_2020.transmission
{
	name: "ZF Traxon Torque Intarder"
	price: 17000
	unlock: 10
	icon: "transmission/zf_traxon"
	part_type: factory

	stall_torque_ratio: 1.59
	differential_ratio: 4.0

	ratios_reverse[0]: -12.03
	ratios_reverse[1]: -9.29
	ratios_reverse[2]: -2.64
	ratios_reverse[3]: -2.04

	ratios_forward[0]: 12.92
	ratios_forward[1]: 9.98
	ratios_forward[2]: 7.67
	ratios_forward[3]: 5.94
	ratios_forward[4]: 4.57
	ratios_forward[5]: 3.53
	ratios_forward[6]: 2.83
	ratios_forward[7]: 2.19
	ratios_forward[8]: 1.68
	ratios_forward[9]: 1.3
	ratios_forward[10]: 1.0
	ratios_forward[11]: 0.77

	retarder: 3

	conflict_with[]: "4x2.man.tgx_2020.chassis"
	conflict_with[]: "6x2_2.man.tgx_2020.chassis"
	conflict_with[]: "6x22.man.tgx_2020.chassis"
	conflict_with[]: "6x24.man.tgx_2020.chassis"
	conflict_with[]: "6x4.man.tgx_2020.chassis"
	suitable_for[]: "8x4.man.tgx_2020.chassis"

@include "sound.sui"
}
}

[alfredparker360]

It's quite surprising that this discussion thread hadn't been started yet. It seems that the ETS2 community is relatively quieter. I have to agree, the truck in the upgrade looks fantastic, and the addition of the 8x4 chassis and heavy-duty bumper is a welcome feature. The only downside mentioned in the stream is the absence of an analog dashboard, which is a bit disappointing. Nevertheless, I'm eagerly looking forward to trying it out. Personally, I'm most excited about the upcoming reworks/refreshes for the old MAN trucks. It'll be interesting to see the changes, especially considering the absence of an analog dashboard on the new MAN model.

[gfr43012]

@thesimp
Current torque converter systems have no function of skipping gears. For example, if a torque converter is attached to a 12-speed transmission, it will try to shift sequentially from 1st gear to 12th gear regardless of the actual situation. (Attempt unnecessary shifting)

And also, the ZF TraXon Torque system applied to the TGX is equipped with a "bypass" function between the torque converter and the AMT clutch based on a specific engine RPM (e.g. 1200 RPM) for a smooth and powerful start under heavy load. So, when moving heavy equipment on hills or flats
The torque converter provides a powerful and smooth start without heavy load on the clutch, after which it operates like a regular AMT transmission.

To make it easier to explain, the torque converter controls the transmission only below 1200RPM, and above that it operates like a normal AMT transmission.

So, developers will have to create and add a "bypass" function between "torque converter" and "AMT clutch" to this transmission.

And I don't see why you need to force that transmission to only apply to that 8x4/4 frame. When ZF TraXon Torque + TipMatic 12 30 OD + ZF Intertar parts are combined, the size is very large and the weight of the transmission alone is very heavy, over 300kg, but it seems to me that it can be installed on a 6x4 frame.

[J.Random]

I'm not a transmission scientist, but this whole "bypass function" sounds like mumbo-jumbo to me. TC is just decoupling engine RPM from gearbox input RPM. Engine spins the oil pump, oil pump creates pressure, pressure pushes turbine, turbine rotates the input shaft of the gearbox (or, rather, flywheel and so on). I don't think there's any specific "bypass", there's just a lockup clutch between engine- and gearbox-facing TC halves, which engages when gearbox input RPM are high enough. Even if engine RPM is a factor, I'd expect it to be just a safety feature, to prevent TC lockup when engine output and gearbox input RPMs differ too much.

[gfr43012]

@J.Random

Damn I misunderstood the meaning of "bypass".

Anyway, I'm not a transmission scientist like you, so I don't know.
But what the developers need to fix now is the sequential shifting function of the torque converter. In the current game, the torque converter is forced to sequentially shift regardless of the number of gears.
Developers just need to fix this part.

And add torque converter locking system

[NoDe31]

Developers needs to fix whole "transmission" system.. Its way to simplistic for any modern ATM or Automatic gearbox... Gear switch should not be defined by engine RPM (in engine def. file), but by amount of throttle applied and engine load as bare minimum.

[gfr43012]

It's a big job that needs to be completely fixed, and the developers will fix it at some point. You don't have to fix it right now.
What we need right now is the urgent need to add that transmission to a new truck.