Gun convergence

Hi anyone know what is the gun default gun convergence on the Spit IX and how to modify it?

thank you

Inquiring minds want to know...

There was already a thread on this https://forums.eagle.ru/showthread.php?t=178037&page=1

300 yards ?

There was already a thread on this https://forums.eagle.ru/showthread.php?t=178037&page=1

Thanks:thumbup:

It's definitely closer than 300 yards, more like 150 to 180. Makes it very hard to shoot things that are turning because your tracers quickly disappear below your nose.

They are definitely further then 180. Do a test, make a mission place a 190 in front that fly in the same heading then you and set your gunfight base at 40 and the range at close range 2 (200 yards). Get close to your 190 until it completely fit's in the gunsight " that mean you are in range or 200 yard from him" Shoot and you will see your bullet barely touch it's wing tip. If the convergence would be 200 the bullets would impact the the middle of the gunsight or the middle of the aircraft

Thank you YO-YO for the reply and that wonderful module, further down the line will we be able to adjust the convergence to a closer range like it was done those days?

The convergence is for real WWII Spitfires. As far as I remeber, single point, 300 yds.

Originally 400 then reduced to 250 with some senior pilots getting their mechanics to change to 100 yds.

The convergence is for real WWII Spitfires. As far as I remeber, single point, 300 yds.

The in-game gunnery tutorial says set range for 150 yards, so I had presumed that the convergence was set to 150 yards; if not, then perhaps the gunnery tutorial should be changed to reflect a range of 300 yards, not 150 yards (big difference, LOL).

It would be good if you could confirm gun single point convergence range for certain Yo-Yo. It is very important, crucial in fact, if we are to use the gun sight to best effect. Thank you in anticipation.

Happy landings,

56RAF_Talisman

And how did they manage to hit the target at 200-300 yds if they had to?

The question is how they manage to hit at 300 to 400? They didn't it was highly inefficient. That is why they end up with closer convergence.

I personalty like to shot when the aircraft fill the complete gunfight that is around 150. No waste :)

And how did they manage to hit the target at 200-300 yds if they had to?

The convergence range is just where the concentration of fire is focused.

You can still hit and do damage some distance nearer and further than that range.

btw The 300 yard figure came from a chat with a dev. ;)

I thought it was 250 yards in the RAF? I can't see it in any official docs though.

Air Chief Marshal Dowding stated:

"A great deal of discussion took place before and in the early stages of the war as to the best method of harmonisation of the guns of an 8-gun fighter: that is to say the direction, in relation to the longitudinal axis of the aircraft, in which each gun should be pointed in order to get the best results.

There were three schools of thought. One maintained that the lines of fire should be dispersed so that the largest possible “beaten zone” might be formed and one gun (but not more than one) would always be on the target. The second held that the guns should be left parallel and so would always cover an elongated zone corresponding with the vulnerable parts of a bomber (engines, tanks and fuselage). The third demanded concentration of the fire of all guns at a point.

Arguments were produced in favour of all three methods of harmonisation, but in practice it was found that concentration of fire gave the best results. Guns were harmonised so that their lines of fire converged on a point 250 yards distant: fire was therefore effective up to about 500 yards, where the lines of fire had opened out again to their original intervals after crossing at the point of concentration."

Also mentioned here and various other places:

https://en.wikipedia.org/wiki/Gun_harmonisation

That matter is confuse, find this in "history" forum:

Sep 1938 - harmonised to a point 350 yards ahead --- 'concentrated pattern'

c.Sep 1939 - harmonised to a large box pattern 400 yards ahead --- 'horizontal harmonization' (British Forces in France continued to harmonise to a point 350 to 150 yards ahead, depending on Squadron)

c.Dec 1939 - two squadrons switch to a large circular pattern 200 and 400 yards ahead --- 'circular harmonization'

Jan 1940 - ten squadrons switch to concentrated pattern

Feb 1940 - full RAF switch to concentrated pattern

"Dowding Spread" is 400 yards.

And books saying that latter (1942?) was changed for 300 yards.

Allright, I'm personally not really crazy about ability of changing convergence distance, or investigating which one is correct for 1944, but I'm just curious what the one set in DCS Spit is, so that I could adjust the gunsight better. Seems to be somewhat shorter than in P-51, but maybe it's only my impression from strafing ground targets.

Yo-Yo, I thought You would know for sure :D. Could You please take a look into relevant files and confirm if it's 300?

Amazing it only took a couple of days for this old chestnut to rear it's ugly head!

I think this was by far the most emotive issue in certain other communities.

In reality, if anyone can judge the range to a target to within a hundred yards when pulling G, and trying to get your sight onto a moving manoeuvring target, you're a better man than me Gungadin!

Machine guns are deliberately designed to be inaccurate - in that projectiles all have slightly different tracks, and have a beaten zone for the fall of shot which is anything up to 100 yards long and at least a couple of yards wide at the upper end of their effective range. Add to that the effects of G and the variable of aircraft speed, having them converge on a barn door at 25 paces would be some going!

Best advice is to forget about convergence ranges, and fly the plane instead of talking about it. You'll get far better results that way.

Amazing it only took a couple of days for this old chestnut to rear it's ugly head!

 

I think this was by far the most emotive issue in certain other communities.

 

In reality, if anyone can judge the range to a target to within a hundred yards when pulling G, and trying to get your sight onto a moving manoeuvring target, you're a better man than me Gungadin!

 

Machine guns are deliberately designed to be inaccurate - in that projectiles all have slightly different tracks, and have a beaten zone for the fall of shot which is anything up to 100 yards long and at least a couple of yards wide at the upper end of their effective range. Add to that the effects of G and the variable of aircraft speed, having them converge on a barn door at 25 paces would be some going!

 

Best advice is to forget about convergence ranges, and fly the plane instead of talking about it. You'll get far better results that way.

Within 100 yards is nothing, maybe if you're talking withing 1-5 yards. Anyway, it shouldn't be hard to do with naked eye, but you have a gun sight that can give you that information.

Amazing it only took a couple of days for this old chestnut to rear it's ugly head!

 

I think this was by far the most emotive issue in certain other communities.

It's as if people are thinking something other than their flying skills must be a fault when they can't score kills ;)

Neil, that's what dots, dashes adjustable rings and whatnot on the reflector glass were invented for - to estimate range down to low tens of yard distances. True, not much use of them when frantically engaging targets pulling some high Gs, but very useful against targets doing shallow turns, or when sneaking up on bombers. Only when we know what convergence is, though, and that's what I'd like to find out in this thread, when talking about DCS Spit.

I defy anyone to use those sights to determine the distance to a target within a bracket of 100 yards. Besides which, any turning target will require you to lead them, so what use is the reticule then? In addition, the closing speed of targets in combat means you really get them to fly through your beaten zone.

Nice to know, maybe, but to quibble over 50 yards in this context is a little crazy. The whole point of that number of guns, and that rate of fire is to get just a small percentage of them to hit and do critical damage. Snipers we are not!

Spiffing Wheeze

Here's a spiffing wheeze what I did ...

Made a mission with a Spit on every airfield.

Hangars are too close to get the angle.

Found one with a tall building nearby - Krasnodar Centre

Taxied till building was in my sights, then fired.

As luck would have it I was putting them all through a window first go.

Measured the distance.

Near as dammit 250yds. (1.2nm)

Here's a spiffing wheeze what I did ...

Made a mission with a Spit on every airfield.

Hangars are too close to get the angle.

Found one with a tall building nearby - Krasnodar Centre

Taxied till building was in my sights, then fired.

As luck would have it I was putting them all through a window first go.

Measured the distance.

Near as dammit 250yds. (1.2nm)

That's what I get in my tests also. 250 yds.