Panzer IV Universe - Technical Data

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Technical Data

Page 2 of 3

Physical Characteristics

	A	B	C	D	E	F1	F2	G	H	J

Combat weight (metric tons)	18	18.5	=	20	22	22.3	23.6	=	25	=
Crew	5	=	=	=	=	=	=	=	=	=
Overall length (mm.)	5920	=	=	=	=	=	6630	6630, 7020	7020	=
Overall width, basic (mm.)	2830	=	=	2840	=	2880	=	=	=	=
Overall width, w/aprons (mm.)	n/a	=	=	=	=	=	=	3330	=	3300
Overall width, w/eastern tracks (mm.)	n/a	=	=	=	=	=	3206	=	=	=
Overall height (mm.)	2680	=	=	=	=	=	=	=	=	=
Turret ring diameter	1600	=	=	=	=	=	=	=	=	=

Late production Ausf. G featured the longer L/48 main gun, hence the two overall lengths.

The source used for the turret ring diameter lists the measurement as the "diameter of turret ring"^STT15-p8. Another source gives the "circular opening...cut into the superstructure roof to carry the turret ring" as 1680 mm^P4V-p21 and yet another lists the "turret ring" as 1650 mm^GTWW2-p196.

^{Other Sources:} ^GTWW2-p196 ^{P4V-p21,72,154-157} ^STT15-p8 ^{TRACT4-p18-58}

Power

	A	B	C early	C late	D	E	F1	F2	G	H	J

Engine, Maybach	HL 108 TR	HL 120 TR	HL 120 TR	HL 120 TRM	=	=	=	=	=	=	=
Cylinders	60° V12	=	=	=	=	=	=	=	=	=	=
Bore x stroke (mm.)	100x115	105x115	=	=	=	=	=	=	=	=	=
Compression ratio	6.5:1	=	=	=	=	=	=	=	=	=	=
Coolant	Water	=	=	=	=	=	=	=	=	=	=
Fuel	Gasoline	=	=	=	=	=	=	=	=	=	=
Fuel pumps	Solex x2	mechanical x2	=	mech. x2, elec. x1	=	=	=	=	=	=	=
Carburetors	Solex 40 JFF II x2	=	=	=	=	=	=	=	=	=	=
Displacement (cc.)	10838	11867	=	=	=	=	=	=	=	=	=
RPM, normal/max.	2600/3000	=	=	=	=	=	=	=	=	=	=
Power at normal/max. RPM (HP)	230/250	265/300	=	=	=	=	=	=	=	=	=
Engine efficiency at normal RPM (HP/l.)	21.22	22.33	=	=	=	=	=	=	=	=	=
Power to weight ratio at normal RPM (HP/metric tons)	12.8	14.3	=	?	13.3	12.0	11.9	11.2	=	10.6	=
Fuel capacity (l.)	139+109+205=453	470 (3 tanks)	=	=	140+110+220=470	=	470 (3 tanks)	=	=	=	470 (3 tanks), 680 (4 tanks)
Auxiliary engine	DKW	DKW PZW 600	=	=	=	DKW ZW 500	=	=	=	=	n/a
Generators, Bosch	GQL 300/12-900 x2	GTLN 600/12-1500 x2	=	=	=	=	=	=	=	=	=
Batteries	6-volt 105 Ah x4	=	=	=	=	=	12-volt 105 Ah x4	=	=	=	=
Starter, Bosch	BNG 4/24 CRS 178	BNG 4/24	=	=	=	=	=	=	=	=	=

The first 40 Ausf. C were produced with the HL 120 TR engine (Ausf. C "early", chassis numbers 80301-80340). The next 100 chassis were built with a new version of the Maybach HL 120, the TRM (80341-80440). The TRM featured an improved ignition system.

At least one source indicates that the Ausf. A featured the same 470 liter fuel capacity as later models^TRACT4-p18. Perhaps the sizes of the tanks were increased at some point during Ausf. A production.

The Ausf. J was to have its auxiliary motor replaced by a forth gas tank. This tank, however, was omitted during early production (even though the auxiliary motor and generator were already being left out). This was due to lack of supplies. The tanks were first installed in tanks completed in early July 1944 starting with chassis 91501. In early August leaks were found so the tanks were again omitted starting with chassis 91949 until reliable tanks were received in September. The 470 liter Ausf. J figure is based on the assumption that those Ausf. J produced without the spare tank retained the Ausf. H tank sizes.

^{Other Sources:} ^{P4V-p31,32,154-157} ^PT1-p280 ^{TRACT4-p14-56}

Delivery of Power

	A	B	C	D	E	F1	F2	G	H	J

Axle ratio	1:4	1:3.23	=	=	=	=	=	=	=	=
Clutch, dry 3-plate	?	=	=	F&S La 120/HDA	=	=	=	=	=	=
Drive sprocket	front	=	=	=	=	=	=	=	=	=
Speeds, forward/reverse	5/1	6/1	=	=	=	=	=	=	=	=
Transmission, Synchron	ZF SSG 75	ZF SSG 76	=	=	=	=	=	=	=	=

^Sources: ^P4V-p154-157 ^PT1-p280 ^{TRACT4-p14-56}

Performance

	A	B	C	D	E	F1	F2	G	H	J

Maximum speed (km./hr.)	32.4	42	=	=	42	=	42	=	38	=
Fuel efficiency, on road (l./100 km.)	318	330	=	250	=	=	=	=	=	=
Fuel efficiency, off road (l./100 km.)	500	=	=	350	=	=	=	=	=	=
Range, on road (km.)	142	142	=	188	=	=	=	=	=	188, 272
Range, off road (km.)	91	94	=	134	=	=	=	=	=	134, 194
Steering ratio	1:1.48	=	=	=	=	1:1.43	=	=	=	=
Turning radius (m.)	5.92	=	=	=	=	=	=	=	=	=
Ground pressure (kg./sq. cm.)	0.68	0.77	=	0.83	0.91	0.88	0.93	=	0.89	=
Fording depth (mm.)	800	=	=	1000	=	=	=	=	1200	=
Ground clearance (mm.)	400	=	=	=	=	=	=	=	=	=
Step (mm.)	600	600	=	=	=	=	=	=	=	=
Trench Crossing (mm.)	2300	2300	=	=	2300	=	=	=	=	=
Climbing	30°	30°	=	=	=	=	=	=	=	=

Few sources agree on performance data. Much of this is due to differences in testing parameters.

Speed data come from recent Jentz work^{TRACT4-p14-56}. Compared with those from other sources, his are consistently the highest numbers.

Fuel efficiency data come from Spielberger^P4V-p154-157. These are higher than those from von Senger und Etterlin^{GTWW2-p196-199}. They are also more complete (including off-road) and were published more recently. In any case, these figures should be taken lightly as common sense dictates that they would have changed more often as power-to-weight ratios decreased from one version to the next.

Range is calculated using the formula:

capacity / efficiency x 100

where capacity is in liters and efficiency is in liters per 100 kilometers. Ausf. J range varied depending on the presence of the forth fuel tank.

Steering ratio and ground pressure are from Jentz ^{TRACT4-p14-56}.

Fording depth is from Spielberger^P4V-p154-157 which is in agreement with Senger und Etterlin^{GTWW2-p196-199}.

Most sources list Ausf. A step capability as 600 mm. Spielberger, however, reports 710 mm.^P4V-p154 This may have been a design specification as opposed to actual capability of the final product. In any case, there is no apparent physical difference between the Ausf. A and Ausf. B that would account for a difference in this capability.

There is also disagreement over trench crossing capability. Jentz's numbers were chosen since they are the only ones that are the same for every version^{TRACT4-p14-56}. This makes sense as the center of gravity probably didn't change significantly from one Ausf. to the next. If anything, the center of gravity moved steadily forward as later versions were made with longer guns and thicker frontal armor, but no one source's figures reflect this.

Climbing figures are also from Jentz^{TRACT4-p14-56}. Other sources give higher numbers for Ausf. A. Since the factors that influence climbing varied considerably from one version to the next, it's likely that the climbing capability also varied. Although all sources agree from the Ausf. B onward, the 30° given here should only be treated as an estimate.

^{Other Sources:} ^{AP3-p2,8,14,18,28,36,45,52,64,80} ^{GTWW2-p196-199} ^P4V-p154-157 ^PT1-p280 ^{TRACT4-p14-56}

Suspension

	A	B	C	D	E	F1	F2	G	H	J

Roadwheels (per side)	8, with 2 tires each	=	=	=	=	=	=	=	=	=
Return rollers (per side)	4	=	=	=	=	=	=	=	=	3 or 4
Tire material	rubber	=	=	=	=	=	=	=	=	rubber or steal
Suspension	Leaf spring	=	=	=	=	=	=	=	=	=
Tire diameter/width (mm.)	470/75	=	=	=	=	470/90	=	=	=	=
Lubrication	High pressure	=	=	=	=	=	=	=	=	=
Brake system	Krupp	=	=	=	=	=	=	=	=	=
Brake effects	Drive wheels	=	=	=	=	=	=	=	=	=
Brake operation	Mechanical	=	=	=	=	=	=	=	=	=
Brake type	External	=	=	=	=	=	=	=	=	=
Track, dry pin	Kgs. 6110/380/120	=	=	=	Kgs. 6111/380/120	Kgs. 61/400/120	=	=	=	=
Links per track	99	=	=	=	=	=	=	=	=	=
Track shoe width (mm.)	360	=	=	=	=	380	=	=	=	=
Track pin width (mm.)	380	=	=	=	=	400	=	=	=	=
Track width w/eastern tracks (mm.)	n/a	=	=	=	=	560	=	=	=	=
Track base (mm.)	2390	=	=	=	=	2460	=	=	=	=
Track base w/eastern tracks (mm.)	n/a	=	=	=	=	2610	=	=	=	=
Track contact (mm.)	3520	=	=	=	=	3520	=	=	=	=

Spielberger and von Senger und Etterlin report 101 links per track through Ausf. E^P4V-p154-157 ^{GTWW2-p196-199}. Photographic evidence and all other sources indicate that there were 99 links on most, if not all, of these earlier versions.

Track width is a source of confusion. Some sources determine what they call "track width" by measuring the track's shoe and others by measuring its pin. The pin extends beyond the inside and outside surfaces of the shoe by a total of 20 mm.

Eastern tracks (Ostketten) are listed here as though use began with the Ausf. F1. These special tracks weren't in wide use until 1944, so, in practice, they may not have been used on versions prior to Ausf. F2 or G. In any case, the Ausf. F1 was newly designed to accommodate these tracks and there is a good chance this earlier version was at least test fitted with them at one time or another.

Few sources agree on track base (measurement from center of one track to center of the other). The differences, however, have all been exactly 10 mm. Perhaps some are measuring from the center of the pins and others from the center of the shoes. Figures in the table above were taken from Jentz^{TRACT4-p14-56} except for Ausf. D and E which are from von Senger und Etterlin.

von Senger und Etterlin is the only source I have that gives a width for the eastern tracks. Track base should be calculated as follows:

2460 mm. regular track base + 560 mm. eastern track width - 400 mm. regular track width - 10 mm. outer pin extension

The outer pin extension is subtracted because the east tracks extend beyond this and so make it irrelevant. von Senger und Etterlin also gives a track base that's adjusted for the eastern tracks, but this measurement is 2620 mm. I suspect that this figure was calculated and that no adjustment was made for the outer pin extension (i.e. 2460 + 560 - 400 = 2620). Spielberger gives an adjusted track base of 2650, but no adjusted track width.^{GTWW2-p196-199} ^P4V-p154-157

Measurements from Jentz were used for track contact as they were the only ones that were the same for each version. They also agree with von Senger und Etterlin.^{GTWW2-p196-199} ^{TRACT4-p14-56}

^{Other Sources:} ^{GTWW2-p196-199} ^P4V-p154-157 ^PT1-p280 ^STT07-p8 ^{TRACT4-p14-56}

Armor Thickness (mm.) / Angle

	A	B	C	D	E	F1	F2	G	H	J

Hull front, upper (glacis)	10/72°	20/72°	=	=	=	=	=	=	20/70°	=
Hull front, middle (nose)	14.5/14°	30/14°	=	30*/14°	50/14°	50*/14°	=	30+50/14°	80*/12°	80/12°
Hull front, lower	14.5/61°	20/61°	=	=	30/61°	=	=	=	30/60°	=
Hull sides, front and rear	14.5/0°	=	=	20/0°	=	30*/0°	=	=	=	=
Hull sides, middle	14.5/0°	=	=	20+20/0°	=	30*/0°	=	=	=	=
Hull rear, upper	14.5/10°	=	=	20/10°	=	=	=	=	=	=
Hull rear, lower	10/74°	=	=	14.5/74°	=	=	=	=	=	=
Hull bottom (belly)	8/90°	=	=	10/90°	=	=	=	=	=	=
Superstructure front, vertical	14.5/9°	30/9°	=	30+30/9°	=	50*/9°	=	30+50/9°	80*/9°	80/9°
Superstructure sides, front	14.5/0°	=	=	20+20/0°	=	30*/0°	=	=	=	=
Superstructure sides, rear	10/35°	10/33°	=	20/10°	=	=	=	=	=	=
Superstructure rear	14.5/10°	=	=	20/10°	=	=	=	=	=	=
Superstructure top, front	11/85°-90°	=	=	=	=	=	=	=	=	=
Superstructure top, rear (engine cover)	10/88°	=	=	=	=	=	=	=	=	=
Turret front	16/10°	30/10°	=	=	=	50*/10°	=	=	=	50/10
Turret sides	14.5/25°	=	=	20/25°	20/24°	30*/25°	=	=	=	=
Turret rear	14.5/0-25°	14.5/0-27°	=	20/0-25°	20/14-26°	30/14-26°	=	=	30/16-24°	=
Turret top, front	10/83°	=	=	=	=	10/84°	=	=	16/84°	=
Turret top, rear	10/90°	=	=	=	=	=	=	=	25/90°	=
Gun mantelet	16/round	30/round	=	35/0-30°	=	50*/0-30°	=	=	=	50/0-30°
Cupola front and sides	14.5/0°	30-80/0°	=	=	30-95/0°	=	=	=	30-100/0°	=
Cupola top	8/90°	=	=	=	=	=	=	=	=	=

*Face hardened plates

Rolled armor used for all versions.

Preference given to data from Jentz. Plate thickness tolerance: -0% - +5%. The last 68 Ausf. D were produced with 50 mm. armor on the lower hull front. Some early Ausf. G were produced without the added 30 mm. of frontal armor. Late Ausf. J were produced without face hardened armor and the superstructure roof was thickened to 16 mm.^{TRACT4-p14-56}

^{Other Sources:} ^{AP3-p2,8,14,18,28,36,45,52,64,80} ^P4V-p154-157 ^PT1-p280 ^{TRACT4-p14-56}

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