In the document C01004916300 on JACAR there is an interesting table of characteristics of the submachine gun without a model designation. But in terms of characteristics it is very similar to Nambu Model II.
Caliber - 8 mm
Overall length - 630 mm
Weight - 3 kg
Muzzle velocity - 334 m/s Rate of fire - 750 rounds/min
Automatic - free bolt
Magazine - box 30 rounds (200 g)
Effective range - 300 m
I still haven’t figured out the weight of the Nambu Model II, but I also haven’t seen any original JACAR documents or Japanese literature that list a submachine gun as having a 600rpm rate of fire, because 600rpm is the rate of fire of the Nambu Model I (yes, the rate of fire that the Nambu Model I currently has is a mistake).
In general, I think it is possible to increase the rate of fire of the Nambu Model II to 750 rpm (if you have other information, please share it), the rate of fire of the Nambu Model I should also be increased to 600 rpm.
Type 2b early SMG had pneumatic buffer which limited the rate if fire to 500-600RPM
Type 2b late SMG removed this which would mean it would achieve the full rate of fire of 750RPM
Caliber - 8 mm
Overall length - 630 mm
Weight - 3 kg
Muzzle velocity - 334 m/s Rate of fire - 750 rounds/min
Automatic - free bolt
Magazine - box 30 rounds (200 g)
Effective range - 300 m
The gun overall length is too short to be type 1 or type 2 smg and its too light
In document A03032152900 I assume the Nambu Model 2 is also described and the weight with an empty 50-round magazine is taken into account, and there it is equal to 3.5 kg (most likely it is the Nambu Model 2 due to the time - December 1938).
The document number C13071087600 on JACAR clearly describes the Model 1 (since it is from 1935, it is too early for a Model 2 test report), and it gives a weight with an empty magazine of 3.4 kg.
At the same time, the length of Model 1 is 620 mm, in principle, the length of 630 mm for Model 2 sounds more or less plausible, if these are not exact values.
In theory, the Model 2 is a Model 1 with a wooden fore-end, which should significantly increase the weight, but according to the documents it has hardly changed, I think this is because the Model 2 had a lighter bolt, which is why the Model 2 has almost no increase in weight and has an increased rate of fire.
Type 2 has 5 different firing settings right?
What if one of the settings was ‘high rate’ which increased the rate of fire to 750rpm instead of the standard 500-600?
What other standard settings, this is a prototype, there was no standard and non-standard settings. It is obvious that Nambu 2 was made on the basis of Nambu 1 and has the same principle of automation, during the tests of Nambu 1, the rate of fire was specially measured at maximum and minimum rates of fire, and it turned out to be 600 rpm and 400 rpm respectively (I threw the document on Nambu 1 above), in the case of presumably Nambu 2 we have exactly 750 rpm, which is more than the maximum possible 600 rpm for Nambu 1. It is obvious that 750 rpm are possible at maximum settings.
damn even the S1-100, MP28 rate of fire is wrong
Both should be like 600RPM
With fixed rate of fire the japanese SMG line would have to go like this lol
BR I
C96 Full Auto - (900-1000RPM, 10 round mag)
T.A Model 1928 - (only single or double round bursts, 18 rounds)
BR II
Type 2A - (420RPM)
S1-100 - (500RPM)
BR III
SIG 1920 - (600RPM)
Type 100/40 - (700RPM)
Type 2B / early - (750RPM)
BR IV
Type 100/44 - (800-900RPM)
Type 2B / late - (750RPM)
BR V
T.A Model 1927 Drum - (1200RPM, 50 rounds)
:::
Premiums
C96 Full Auto 20 mag - BR II - (900-1000RPM) [Gold Order Weapon]
MP28 - BR III - (600RPM) [Premium Squad]
Type 1 SMG - BR III - (500-600RPM) [Gold Weapon]
T.A Model 1927 Box - BR IV (1200RPM, 30 rounds) [Gold Order]
