Author Topic: Mk108 (Read 376 times)

MANDOBLE · « **on:** March 14, 2001, 11:42:00 AM »

In these BBS a lot has been discused about 151/20, but very little about Mk108. Any of you have good info about this gun? Ammo types, projectile trajectores, different muzzle vels, ROFs, durability, range, subtypes (if there were any) etc...
And the fidelity of 108 implementation in AH.

Sturm · « **Reply #1 on:** March 14, 2001, 12:18:00 PM »

what more can you say about it? Its a big slug and it hits like a horse. Rather low muzzle velocity high ROF, only used 1 type of ammunition, no armor penetration despite round size. Also known as the pnuematic Hammer from the noise it makes. Was the stepping stone do to its light weight and compact size, if you compare it to a 103 your comparing a VW "small VW" to a Mercedes. It had a short range as well, many LW pilots reported they would come under fire for sometime before they could fire the 30mm. I believe 400 meters was max effectiveness, but I don't have any books in front of me to give you any more data right now.

Tony Williams · « **Reply #2 on:** March 14, 2001, 03:49:00 PM »

330g M-Geschoss, contained 75g or 85g HE according to type, muzzle velocity 505 m/s, rate of fire 600-650 rpm. (MK 103 fired same projectiles at 860 m/s, but at 420 rpm).

Tony Williams
Author: Rapid Fire - The Development of Automatic Cannon, Heavy Machine Guns and their Ammunition for Armies, Navies and Air Forces.
Details on my military gun and ammunition website: http://www.users.globalnet.co.uk/~autogun/

GRUNHERZ · « **Reply #3 on:** March 14, 2001, 06:29:00 PM »

British post war test showed that a single Mk108 30mm shell would cut a Spitfire literaly in half. Basically they fired one about half way between cockpit and tail, and the plane was cut clean in half.

Its a really funny picture too.

brady · « **Reply #4 on:** March 14, 2001, 07:08:00 PM »

http://visi.net/~djohnson/armament/mk108.html

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[This message has been edited by brady (edited 03-14-2001).]

Vermillion · « **Reply #5 on:** March 14, 2001, 08:15:00 PM »

Nice site Brady, thanks for the link. Thats one I hadn't seen before.

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Vermillion
**MOL**, Men of Leisure

jihad · « **Reply #6 on:** March 14, 2001, 08:34:00 PM »

Quote

Originally posted by GRUNHERZ:
British post war test showed that a single Mk108 30mm shell would cut a Spitfire literaly in half. Basically they fired one about half way between cockpit and tail, and the plane was cut clean in half. Its a really funny picture too.

Enough said!

MANDOBLE · « **Reply #7 on:** March 15, 2001, 06:49:00 AM »

Greatlink brady.
An interesting thing is that this gun had no recoil effect. So, a 109G10 with Mg151/20 should have some recoil effect but no with the Mk108. Have any of you tested if this is currently present in AH? (sorry, I'm still deported at Brazil).

Tony Williams · « **Reply #8 on:** March 15, 2001, 01:00:00 PM »

Not quite - Newton isn't defeated that easily (for every action there is an equal and opposite reaction etc).

The API blowback type of mechanism used by Oerlikons, MG-FF, MK 108, Type 99 etc had the characteristic of smoothing out the recoil kicks over a longer period of time, so the recoil was more of a steady push than a violent hammering. This meant that mountings could be much simpler as the gun didn't have to recoil in its mounting.

Tony Williams
Author: Rapid Fire - The Development of Automatic Cannon, Heavy Machine Guns and their Ammunition for Armies, Navies and Air Forces.
Details on my military gun and ammunition website: http://www.users.globalnet.co.uk/~autogun/

Author Topic: Mk108 (Read 376 times)

Sturm