Changing Cannon ammo on Bf110

Started by Last Hussar, 14 January 2025, 10:07:11 AM

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Last Hussar

Looking at the history, it turns out that while the Bf110 had 180 rounds of ammo, these were actually 3 60 round drums. When a drum ran out the rear gunner had to change it.

Anyone any idea how long this took, and whether the pilot had to fly in a certain was - eg straight and level maybe - to let this be done?
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Lord Kermit of Birkenhead

ARGHHH - its ME110 not Bf. Given the weight of 60 20mm rounds I suspect the aiorcraft would have to fly in a fairly steadt way for the change, Also I'm a tad confused - 2 x 20m with 3 spare drums ?
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Last Hussar

14 January 2025, 12:20:42 PM #2 Last Edit: 14 January 2025, 12:25:45 PM by Last Hussar
Think that should be 3 drums per gun! Sorry. Or possibly 1 drum served both? Unlikely?

QuoteME110 not Bf
Are you sure?
RAF Museum - Bf110
I have neither the time nor the crayons to explain why you are wrong.

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Lord Kermit of Birkenhead

Yep - the factory became Willys after Bf109, ME110 is the first so designated.
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Gwydion

The 110 was developed and produced initially before the 1938 change of the company's name to Messerschmidt AG.
Willy however was a shareholder of Bayerische Flugzeugwerke AG as well as the designer and he called it an Me 110 c1936 on its first flight. The RLM (Reichsluftfahrtministerium) - Air Ministry - called it a Bf 110 in accordance with their naming system.
BFW continued to call it the Me 110 in their documentation and advertising such as Der Adler.
When the BFW became Messerschmidt AG, the official RLM designation changed from BFW Bf 110 to Messerschmidt Bf 110. (But everyone else kept calling it the Me 110).


Edit: Sorry; no idea about the time to change a drum of 20mm cannon ammunition.

Last Hussar

QuoteEdit: Sorry; no idea about the time to change a drum of 20mm cannon ammunition.

At least you remembered what the thread was about!
I have neither the time nor the crayons to explain why you are wrong.

"The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little."
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Orcs

This is only really relevant if you are going to record how many seconds the Pilot pulls the trigger for, and thus the number of rounds fired. Surely a more simpler and abstract way could be found , eg just reduce the rate of fire slightly to allow the change of drum.
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Last Hussar

Its a thought. Not sure how it would work though. The thing here is the 110 has to fly straight and level for a period of time, with no ammo. Dogfighting is very much something could happen at any moment - down periods make a difference.

It's tempting to leave them out - which I can do while resolving this - but they were a part of the action. Technically their kill/loss rate is better than the 109.
I have neither the time nor the crayons to explain why you are wrong.

"The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little."
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Orcs

There kill /loss rate is due to the type of action they wee involved in and against who. the 110 had a good forward punch and did more anti- bomber missions and night fighter stuff, Not really a dogfight aircraft.  More sneak up under a lone Lancaster  give it a good burst of fire in appropriate area. and fly away before the gunners can bear on you. 

A lot safer than being in a 109 and having to take on Spitfires and Hurricanes.
The cynics are right nine times out of ten. -Mencken, H. L.

Life is not a matter of holding good cards, but of playing a poor hand well. - Robert Louis Stevenson

Ithoriel

Worth looking at this thread for info on and pics of the drum change

https://a2asimulations.com/forum/viewtopic.php?t=8000

Hope this helps.
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Orcs

Sadly none of the pics seem to work
The cynics are right nine times out of ten. -Mencken, H. L.

Life is not a matter of holding good cards, but of playing a poor hand well. - Robert Louis Stevenson

Last Hussar

Agreeing with Orcs... TWICE.

Yeah I know...

It's not clear on the count circumstances, though it implies it was BoB.  I suspect that it is down to numbers/maths. 10 110s claiming 17 RAF is "technically " better than 100 109s claiming 150 kills.

Those pics didn't work for me either, and I have checked that site before. The problem is all the diagrams are just of position,  no website on timing. I'm going to go 6 phases = 20 seconds, and nothing but straight and level, penalty if it turns/dives etc.
I have neither the time nor the crayons to explain why you are wrong.

"The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little."
Franklin D. Roosevelt

GNU PTerry

Ithoriel

Ammo drums from Rojas Bazan's 1:15 model plus original plans

3 per gun to answer an earlier question.

Looking at the model, just turning round to access them would be "interesting" given how slim the fuselage is and that presumably the rear gunner's seat is in the way?

There are 100 types of people in the world, those who understand binary and those who can work from incomplete data

Raider4

14 January 2025, 09:50:17 PM #13 Last Edit: 14 January 2025, 10:09:40 PM by Raider4
QuoteA lot safer than being in a 109 and having to take on Spitfires and Hurricanes.
Good job they weren't used as bomber escorts during the Battle of Britain then.

Orcs

Quote from: Raider4 on 14 January 2025, 09:50:17 PMGood job they weren't used as bomber escorts during the Battle of Britain then.
They were quickly moved to night fighter duties as outclassed by Spitfire and Hurricane
The cynics are right nine times out of ten. -Mencken, H. L.

Life is not a matter of holding good cards, but of playing a poor hand well. - Robert Louis Stevenson