Originally posted by RAM:
From "Warplanes of the Luftwaffe", ISBN 1-84013--374-5
Apart of mentioning the G10/R5...
"While the 109G6/U4 was armed with two 30-mm Mk108 underwing cannons"
And a bit later:
"the Bf109G10/U4 had provision for a belly gun pack containing two MK108 30mm guns, but this could be replaced by a non-jettisonable fuel tank know as the "inner behalter "
The book was first edited in 1994. I have the 2000 year edition. As you may understand I wont post data that only appears on one of my books but not on the rest (Jane's mentions that configuration too, but I know the reliability you give to Jane's here)
So, then, this was too an "old book"?
[This message has been edited by RAM (edited 01-30-2001).]
First of all...we were taking about Bf 109G-10/R5, right?
Well I have "Warplanes of the Luftwaffe" too (Edited by David Donald, right ?). And as I said...many new books quote old ones and misinformation lives on and this one is example of just that! It still lists Bf 109K-4 with possible MK 103 and MG151/15s

And what comes to Jane's...I know it's reputation but on WW2 planes and especially german ones I still believe these guys. Janes is good for newer stuff tho, won't deny it.
Before we go to Bf 109G-6/U4 and Bf 109G-10/U4 I'll tell you the sources these guys used while writing "Messerschmitt Bf 109 F, G,& K Series" (straight quote):
"Sources
Messerschimitt delivery plans;conversion kit delivery plans;C-Amt program;GL/C discussion minutes;Aircraft Contstruction Central Commitee discussion notes;Messerschimitt AG discussion notes;Air Division Headquarters Austria - Special Report No.2;Air Industry Austria;Aircraft Type Sheet Bf 109, Chief Technical Air Armaments,as of 1.8.1944;flight logs of test pilots and service pilots;Quartermaster-General's loss reports"
...And what does this book say about Bf 109G-6/u4...(straight quote):
"From the summer of 1943 WNF delivered a considerable number of G-6 aircraft in which the MG 151/20 engine-mounted cannon had been replaced by a 30mm MK 108; this installation received the designation G-6/U4. It is unsertain to what extent machines with Umbausatz 4 were also equipped with two additional MK 108 cannon in underwing gondolas. Minutes of the RLM discussions concerning special measures for the air defence of the Reich held on 9 August 1943 reveal that the Messerschmitt AG had been instructed to begin planning for the earliest possible change-over from the installation of Rustsatz R6 to two MK 108s. this scheme does not appear to have proceeded much beyond the planning stage however, as beyond test machines, no other production aircraft are known to have been so armed. Still, the conversion was listed in an aircraft type sheet of the Chief of Technical Air Armanents dated August 1, 1944 as G6/U6."
Conclusion: We have G6/U4 in AH and G6/U6 never entered production.
And then we have the Bf-109G-10/U4...Again, this book says (straight quote): "The stantard engine-mounted MG 151/20 cannon was in many instances replaced by a 30mm Mk 108, the installation receiving the designation U4."
I'm VERY baffled with this "belly gun pack". If you RAM or someone else have pics/drawings or anything about this I would sure love to see them...What ever this thing you quoting here is it surtainly isn't U4...
Conclusion: Messerschmitt Bf-109G-10/U4 indeed is in AH.
RAM SAID:
"Your source is wrong. The 109G10 fitted with two MG151/20 wing gondolas were the R6 rustsätze. All 109s fitted with underwing mauser 20mm gondolas, since the F series,were noted as the R6 configuration.
The R5 was the 30mm Mk108 underwing cannons field modification."
This is arguable between two sources but I still believe Prien & Rodeike's list is correct.
Prien & Rodeike's list for G-10:
U4 :MK 108 replaced MG 151/20
R2 :Rb 50/30 camera
R3 :300 litre extra fueltank
R5 :two MG 151/20 in wing gondolas
R6 :a PKS 12 single-axis autopilot which automatically controlled the aircraft's rudder, whereas the elevator and ailerons were operated manually by the pilot.
Now here comes the misinformation:
Jean-Claude Merret lists the following:
R1 ETC bombrack or 503
R2 MW 50
R3 300 litre droptank
R6 MG 151-cannons in wing gondolas
R7 BR-21 rocketlauncher tubes in the wings
R8 BSK-16 camera in the left wing
I believe Prien & Rodeike got it right because of the information of surtain finnish book called "Messerschmitt BF 109 and Germany's war economy (english translation)". Author of this book, Hannu Valtonen is the director of Finland's Aviation museum and has also done a ton of research for his many books and crushes many myths conserning Germany's economy and production during the war for example. This is a translation from that book conserning those two lists:
"It looks like the first list is more correct, since the latter is missing reconnasance version which was built without a doubt"
So, RAM I still stand behind my sources and advice you to buy Prien & Rodeike's book and to double check your sources.
1Wmaker1
Lentolaivue 34
[This message has been edited by Wmaker (edited 01-30-2001).]
[This message has been edited by Wmaker (edited 01-30-2001).]