Krupp-Daimler KD-I Geschützkraftwagen 19 mit 7,7 cm Flak L/27

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I would like to suggest the KD-I Geschützkraftwagen 19 mit 7,7 cm Flak L/27 one of quite a lot of WW1 SPAAG
As a weaker alternative to the KD-I 7,7 cm Flak 16 L/35

The history behind it is a long path, starting in WW1 in 1918 going till somewhere befor or even in WW2.

In 1918 on basis of the KD-1 Artilleriezugmaschine (Artillery tractor) (from 1917 to 1918 were 1.159 produced) was the KD-I Geschützkraftwagen 19 build by equipping it with the 7,7 cm Flak L/27 (Used at that time the same ammo as the 7,7 cm FK 96 L/27 with about 465m/s) which was made in the beginning to mobilize the 7,7 cm Flak L/27 for anti aircraft and anti balloon usage, beeing able to escape enemy artillery fire, while also beeing effectively used as an mobile anti tank platform beeing able to quickly react to enemy attacks of Tanks. The Vehicle was regarded highly by the Reichswehr for its high usability as AA and AT vehicle, beeing even kept after the War.

Overall not just the L/27 guns were used, the ammo of 7,7 cm was chosen so enemy captured equipment such as french 75 and russian 76,2 mm guns could and were drilled out to accept german ammo, which even a wide range of different guns were mounted on these vehicles from L/27 to L/35.
As well as the more powerfull Fk 16 L/35, which is mainly just a longer barrle with 545m/s instead of “just” 465m/s.

Overall there were quite a lot of different guns and mountings used on them such as as above mentioned drilled out french and russian guns, but also going further than simple Sockellafetten going as far as mounting shields and even big turret arrays, which in this case i suggest the L/27 with gunshield.

Why i would like to see this vehicle? Old stuff can take a grip in game, but is still underrepresented and this is one of the vehicles which are actually quite good and will be quite usable (notice characteristics of the truck and gun below) Bringing an quite good Gun on a mobile chassis with similar playstyle ot the italian 100mm gun, but with greater effeciveness, otherwise the gun (essencially a 7,7 cm FK 16 L/35) would also have no place in game as it was not mounted on other vehicles to my knowlege while it is also historically relevant in beeing the starting point of the stronger AT weapons for the german army in WW1, beeing also used as close combat AT guns.

As well as beein a viable AA and AT vehicle in a possible WW1-Interwar 1939 Mode.

The 7,7 cm Flak L/27 and 7,7 cm Flak L/35 are identical in construction, however only differentiate in barrle length, which is only slightly visible, rule of thumb, is if the Recoil cylinder assebly is as long as the barrle its propably L/27, if longer its L/35. Also often the L/35s recoil cylinder looks thinner with vertical rings around it, while the L/27s is a smooth rounded Cast piece.


Pictures:(Click to show)

https://www.youtube.com/watch?v=OD78GFDwHzE

(NOTE: These are both L/27 and L/35 guns, as both were used on the vehicle!)



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The Gun:

7,7 cm Flak L/27

7,7 cm about 12-15 rpm -5 °(or -8°) to +75° and 360° traverse

60 rounds of ammo across different containers around the flatbed and in the vehicle sides.

Ammo: There are 6 rounds.

(Note: Amatol could also have a 1,26x TnTa.)


Ammo:(Click to show)

AP:


K.Gr. 15 m.P. (Aphe (No Tracer)) 6,85 kg 230g Fp.02 470m/s 52mm/10m penetration

Screenshot 2023-07-26 185616
Screenshot 2024-07-26 150837
Screenshot 2024-08-05 184523
Screenshot 2024-08-05 182821
Screenshot 2024-08-05 182953


K.Gr. 15 m.P. m.L. (Aphe) 7 kg 230g Fp.02 465m/s 52mm/10m penetration

Screenshot 2023-07-26 184846


K.Gr.16 (Saphe (No Tracer)) 6,25 kg 700g Amatol 480m/s 30+mm/10m(Historical 20mm/600m)

With Lg.K.Z.m.V., also available as pure HE with E.K.Z. 16/23 fuze (see below under HE)
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HE:


K.Gr. 15 (He-TF (No Tracer)) 7,1 kg 380g amatol or 270g Pieric acid 465m/s

(TNTa for the Pieric Acid In Game x1,1, IRL x1,2, for the Amatol x1,26)
Screenshot 2023-07-26 184237
Screenshot 2024-08-05 184353
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K.Gr.16 (He-TF (No Tracer)) 6,25 kg 700g Amatol 480m/s

With E.K.Z. 16/23, also available as SAHPE with the Lg.K.Z.m.V. (see above under AP)
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Screenshot 2024-08-05 182722
Screenshot 2024-08-05 183025


L.F.K.Gr. (He-TF (No Tracer)) 7,18 kg 930g amatol (1,172 kg TnTa) 465m/s

(Pieric Acid ig x1,1=770g, IRL x1,2=840g) other fillers are 700g Pieric acid or 820g amatol with 75g Pieric acid.
Screenshot 2023-07-26 184253
Screenshot 2024-08-05 184450


Utility:


Kt. (Canister Shot (No Tracer)) 6,65 kg Steel/Leadballs 475m/s

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F.Schr.96 (umg.) (Shrapnell-TF (No Tracer)) 7 kg 0,1 kg Blackpowder 465m/s

Works like a Crude WW1 AHEAD round, with a timed fuze mid flight ejecting the Steel/Leadballs, against Infantry and planes.
Filling of x300 10g Lead Balls or 220 Steel Balls (with steel balls 6,85 kg)
Some incendary effect by the pitch around the balls.
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Screenshot 2024-07-26 201036
Screenshot 2024-07-26 201049


Br.Schr.Gr. (Incendary Shrapnell-TF (No Tracer)) 6,8 kg 0,167 kg Blackpowder 470m/s

6 Rows of 5 Segments of Incendary Pellets, Made of Bariumnitrate-Magnesium-Resin of 13g each.
Works like a Crude WW1 AHEAD round, with a timed fuze mid flight ejecting the Incendary Pellets onto the Airtarget.
Screenshot 2024-08-09 205639


K.Gr.16 (N) (Smoke (No Tracer)) 6,25 kg 0,4 kg Fp.02 and 0,1 kg Smoke mixture 480m/s

Screenshot 2024-08-05 182733
Screenshot 2024-08-05 183007



Vehicle: Artillerie-Kraftzugmaschine Krupp-Daimler 100 PS

Weight: 8000 kg

Length: 6265 mm

Width: 2170 mm

Height: 2860 mm

Axle articulation: 30°

Engine: 4 or 6 cylinder 100 HP/74kw engine

Speed: 8 gears forward with 65 kmph (conflicting sources, going from 36 kmph with 10t attached load to 65 kmph)

3 reverse gears to 8,5 kmph

Wheelbase: 3750mm

Ground clearance: 400mm

Turning radius: 6,5m

Crew: for this vehicle in game somewhere between 6-10

Armor: around the Hull 3-4mm (wow so thick, will deflect some small he rounds and rifle bullets from afar, nothing more)
Gun shield: 14,5 mm

I am sorry for errors and slight missalingements, its just so old.

Source: DMG stellt erste Exemplare der Artillerie-Kraftzugmaschine K.D.I. fertig

Notes on German Shells, 2nd Edition
Geschoßringbuch Band I
Munition der FK 16
Das Gerät der Artillerie vor, in und nach dem Weltkrieg
Encyclopaedia of the German Army in the 20th Century
Vom Einzelschuss zur Feuerwalze: der Wettlauf zwischen Technik und Taktik im Ersten Weltkrieg
Deutsche Artillerie 1934-1945
Weapons of the Third Reich An Encyclopedic Survey of All Small arms, Artillery and Special Weapons of the German Land Forces 1939-1945
German Explosive Ordanance Projectiles and Projectile Fuzes Chapter 5

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