Current Inaccuracies with M4A2 Sherman

[=362nd_FS=RoflSeal]

Ingame the Sherman can only depress the gun -5 degrees for some reason. The real Sherman could do double that

Also the Sherman ingame revs over 4000 rpm. Max RPM for the M4A2's twin diesels were 2250. The idle speed ingame is roughly 1000 rpm when it should be 400-600rpm.

 

From TM9-731B

 

[Torrens]

Do you mean that full-load single engine has 2100 rpm max or both combined? Not sure if no-load mattters since tanks always start with full-load. Could it be that devs combined the rpm for a total of 4000? That would also make the iddle speed around 1000. Just guessing. The -5 degree depression should be fixed if that is the case.

 

 

Edited April 8, 2019 by Torrens

[Legioneod]

1 hour ago, Torrens said:

Do you mean that full-load single engine has 2100 rpm max or both combined? Not sure if no-load mattters since tanks always start with full-load. Could it be that devs combined the rpm for a total of 4000? That would also make the iddle speed around 1000. Just guessing. The -5 degree depression should be fixed if that is the case.

 

 

 

Doesn't make sense to combine them since they'd still only be running 2100 rpms max. 

Edited April 8, 2019 by Legioneod

[GunnyHighway]

On 4/7/2019 at 8:44 AM, =362nd_FS=RoflSeal said:

Ingame the Sherman can only depress the gun -5 degrees for some reason. The real Sherman could do double that

Also the Sherman ingame revs over 4000 rpm. Max RPM for the M4A2's twin diesels were 2250. The idle speed ingame is roughly 1000 rpm when it should be 400-600rpm.

 

From TM9-731B

 

Could it be that those specifications are for training only, because US vehicles are equipped with a GOVERNOR, that is disengaged in combat. Hence not wearing down engines in training situation.

[=362nd_FS=RoflSeal]

16 hours ago, Torrens said:

Do you mean that full-load single engine has 2100 rpm max or both combined? Not sure if no-load mattters since tanks always start with full-load. Could it be that devs combined the rpm for a total of 4000? That would also make the iddle speed around 1000. Just guessing. The -5 degree depression should be fixed if that is the case.

 

 

No they wouldn't be combined, it's why there are 2 tachometers

 

33 minutes ago, Ze-GunnyHighway said:

Could it be that those specifications are for training only, because US vehicles are equipped with a GOVERNOR, that is disengaged in combat. Hence not wearing down engines in training situation.

No way would an engine especially a diesel from that period survive being oversped 2x the allowed limit in the manual.

 

 

From the tank dataplate if that tank reaches 25mph at 1800 rpm, it should reach ~30 mph at 2250mph

 

If Dmitriy Loza's account is accurate that they were doing 70kph on the road to Vienna in their Shermans that would mean the engines would be revving at 3300 rpm.

 

[Han]

Negative elevation to be fixed in the next update.

 

 

"From the tank dataplate if that tank reaches 25mph at 1800 rpm, it should reach ~30 mph at 2250mph"

Wrong, 25*2250/1800=31.25 

[Fliegel]

Little detail:
The ammo inside the tank is black with white markings. That is M61 APC (APCBC) traced ammo without the HE filler (it is not M72 though, since it has caps and is partially hollow).
But the tank in-game used M61 APC with the HE filler (APCHEBC) which should be olive with yellow markings 

UK manual for Sherman
The filled projectile is painted olive-drub with yellow lettering: – "75 G Proj APC M61 with tracer."
The unfilled projectile is painted black with white lettering: – "75 G Shot (or Proj) APC M61 with tracer."

US Artillery Ammunition TM 9-1901
(page 15)
High-explosive                           Olive-drab; markings in yellow
Armor-piercing containing       Olive-drab; markings in yellow
    high-explosive
Armor-piercing without                     Black; markings in white
    explosive
...
(pages 100 and 102)
image of olive M61 fuzed and black M61 unfuzed round
the part availibel on the internet:
http://www.theshermantank.com/wp-content/uploads/75mm-M3-spec-booklet-MK-VI.pdf

 

Edited April 9, 2019 by Fliegel

[=362nd_FS=RoflSeal]

On 4/9/2019 at 8:28 AM, Han said:

Negative elevation to be fixed in the next update.

 

 

"From the tank dataplate if that tank reaches 25mph at 1800 rpm, it should reach ~30 mph at 2250mph"

Wrong, 25*2250/1800=31.25 

Must be that then as the true top speed of the M4A2.

Sherman top speeds are all over the place, you will find dataplates for A2/A3/A4 tanks where the top speeds are clearly taken from M4/M4A1 with the radial engine. It must of been done by mistake as there is no other reason. The production Shermans all had the same gear ratios and final drive ratios, so all Shermans of the same sub-variant should have the same automotive performance. There is only one exception, which is the M4A3E2 Jumbo Sherman which had a different final drive ratio to account for the greater weight and reduced the top speed