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The Madsen cannon were also advertised as being available with belt feeds, mainly for the aviation market.
OK, getting off topic here, but Jessen developed a concept for using automatic rifles (the original Madsen gun) in 1912! Developing the Fire Team It appears to be the earliest concept of using a "fire team," although it's a bit more like MG teams as part of a very small MG platoon perhaps, and clearly inspired by skirmishers.This is from a DIS publication dated 1946: "Automatic Standard Arms of Modern Warfare Vol XI: Madsen Arms during the World War 1939-1045 and after 1945" by Colonel Halvor Jessen.
That's clearly heavily airbrushed. Any idea if that's supposed to be a .30 MG barrel also sticking out of the wing?
I still wonder if it was possible to mount wing MGs in addition to the cannon (with reduced ammo for both, no doubt), or if it was possible to retrofit wing guns if you removed the cannon. The Thais do seem to have removed the cannon after the Japanese invasion/Japanese alliance.
"muzzle brake"Unfortunately it is not. But it is a good example of the Madsen 20mm gun. IMHO, the difference between the 20mm and the 23 mm guns can be seen in the pics below. There is the gun pod with the Madsen 23mm mounted to the XP-36F. The gun seems to have the longer perforated jacket of the barrel. So the distance between the front of the barrel cover and the nozzle
I'm confused. Are you saying that all three of the pictures below are 23mm? Or is the middle one supposed to be 20mm? Or, does the middle photo show the aircraft being serviced with the muzzle brake and barrel jacked removed?is smaller than for the 20mm gun. What is more there is something looking like the fastening with small and shorth pipes ( screws ) at the front of the barrel jacket.
Those are set-screws for the barrel jacket. However, I can't find any photos of a 20mm Madsen with set-screws there.View attachment 640557
View attachment 640558
and closse-up shot of the gun pod ...
View attachment 640564
and the 23mm Madsen gun ...
View attachment 640560
Contrary to that, the Curtiss Hawk 75N displayed in the museum has the gun exactly looking as the 20mm gun of the Danish Fokker D.XXI. Although the barrels don't have the nozzles ( are removed for some reason )
it can be noticed that the distance between the front of the barrel jacket and the thread for the nozzle is larger than for the 23mm gun. And of course the barrel cover doesn't have the small pipes or screws at the front.
and a close-up shot ...
View attachment 640563
The source of all images: the internet
"muzzle brake"
I'm confused. Are you saying that all three of the pictures below are 23mm? Or is the middle one supposed to be 20mm? Or, does the middle photo show the aircraft being serviced with the muzzle brake and barrel jacked removed?
I think the Thai cannon are 20mm, unless there's particularly strong evidence otherwise.
I got what you were saying. If you look at the 20mm in a variety of mounts, you'll see that what you've labeled as "different distance" varies tremendously. There are also barrel shrouds (jackets) with different numbers of ports, so Madsen manufactured a variety of shrouds.
I noticed the apparent lack of a casing ejection slot as well, but I haven't been able to find a photo that shows the inboard sides of the pods, etc., so it's vaguely possible that we're missing something.I think the same. What is more the pods seem not to be the original ones. In all pic both with the XP-36F and D.XXI it can be noticed that there were inspection panels, etc... Those in the museum seem to be without any of a such hatches and appertures. Also these used for the XP-36F and those seen in the blurry images of the RTAF Hawks seem to be more streamlined.