MG151 dimensions IAR81c

SirFrancis

Airman 1st Class
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Feb 10, 2022
Hi people, I've almost completed my little IAR81c. However the kit did not have canons. You have to supply / scratch your own! So I am going to get some hypodermic needle tips, but not sure what gauge to get. Does anyone have info on diameter of MG151 barrel? ok thanks

1674201394033.png
1674201405836.png
 
I just scaled the drawing and came up with 35mm.... which is 0.49mm @ 1/72 scale. The needle on hand is 25 gauge which is 0.51mm..... so close enough for me!! woo hoo!
 
The diameter sounds correct. :thumbright:

The barrel lenght of the Mg 151/20 was 1,104 m


So ... 1,104m / 72 = 0,0153333m

0,0153333m x 100 =1,53333 cm

what is

15mm
 
The diameter sounds correct. :thumbright:

The barrel lenght of the Mg 151/20 was 1,104 m


So ... 1,104m / 72 = 0,0153333m

0,0153333m x 100 =1,53333 cm

what is

15mm
Yes but some of that will be inside the wing... the length protruding I scaled approx 11.5mm. 12.5mm looks better.
 
And drawings confirming the dimension.

IAR80_81 drawings1.jpg

the source: Suggestions to the I.A.R. series.
 
I thought I was too gash and didn't want to post that I scaled the 151/20 barrel as 30mm dia and 80cm from the end of the thick part to the muzzle.
You can probably do better with some scale photo's.

Eng
 
And drawings confirming the dimension.

View attachment 703190
the source: Suggestions to the I.A.R. series.
They're close, yours is a tiny bit longer. (That's what she said) So when I said 11.5mm but looked better at 12.5mm..... probably why..
 
In the pic attached to my post #7 the barrel is protruding almost to the front fastener on the engine cowling ( in the drawings as well ). So using your model , take a ruler and measure the distance from the wing leading edge to the fastener on the model. And you have the dimension. Nothing more to add.

IAR80_81 drawings1a.jpg
 
I thought I was too gash and didn't want to post that I scaled the 151/20 barrel as 30mm dia and 80cm from the end of the thick part to the muzzle.
You can probably do better with some scale photo's.

Eng

In the pic attached to my post #7 the barrel is protruding almost to the front fastener on the engine cowling ( in the drawings as well ). So using your model , take a ruler and measure the distance from the wing leading edge to the fastener on the model. And you have the dimension. Nothing more to add.

View attachment 703193

I scaled off your schematic and came up with 87.4cm = 12.1mm @ 1/72. LOL when I said 12.5 looked better than 11.5 my eye picked out that 1mm difference...lololol... how good is that!
 
PS on the photo i believe there will be some parallax error judging where it is against the fuselage
 
PS on the photo i believe there will be some parallax error judging where it is against the fuselage

For sure there is some of inaccuracy due to the angle the pic was taken with. But other pictures with the long barrel seen seem to confirm that dimension.

Anyway not too bad sight. :thumbright:
 

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