Convergence confusion, please help.

[Ataros]

The diagram above shows vertical conv. set at 400 m. and horizontal at 200 m. This is a historical setting that allows to have effective firing range from about 150 to 300 m. probably (for central weapons up to 400+ m). Note that ballistics causes a round to pass line of gun-sight 2 times.

It is not possible to achieve such a wide range if vert. and horiz. set at one point.

Under Mr.X video you can see that he uses 150/500 setting for blue(to fire at closer range than historical probably) and 250/400 for red aircraft (as they lack speed and have to fire at 109 which are running away from longer distance usually).

[lonewulf]

Ataros, thanks, that's interesting but what we have in the diagram is a compromise setting rather than convergence. The closest the diagram comes to convergence is at 200m. As things stand, the cannon converge at 200m (but at some undisclosed height above the line of sight (which seems highly problematic to me), and the MGs converge at 400m, along the line of sight but at a range where the cannon rounds are beginning to become widely dispersed, and in fact, much more widely dispersed than the diagram suggests because the recoil would introduce extreme horizontal and vertical dispersion at that range.

However, even assuming that the diagram describes a standard LW setting for the E 3/4, (and I suspect possibly it does) it is nevertheless calculated using the know trajectories of the 8mm and 20mm rounds. Physics being what they are, we can calculate where an 8mm round will be relative to a 20mm round when fired from the same point. However, you can't just change those values around as you please. For example, using your diagram, we cant set the vert. convergence at 200m for both the 8 and 20mm rounds and then change the horizontal convergence from 400m (as in the diagram) to 600m. That would be physically impossible because it would require the trajectories of the two types of ammo to deviate from what gravity dictates.

So, I appear to be back where I started from trying to work out why there are two separate convergence values that are not necessarily related to each other.

Can someone please point out where I'm getting my wires crossed.

[5./JG27.Farber]

Originally Posted by lonewulf

Can someone please point out where I'm getting my wires crossed.

Did you see post 10?

I understand what your saying about Real world. The diagram is indeed a compromise! Because when your off the ground, you cant change your convergence! You also can't change the distance to your target as you desire in a fight... (unless your sneaking up on him).

[lonewulf]

Thanks Farber. Yes I did see your post and I did watch the video and yes both were helpful. And I don't necessarily disagree with the approach taken in Ataros' diagram where the guns are adjusted to be effective over as broad a range as possible. This is often done when sighting in a hunting rifle, for example. Instead of adjusting your sights so that your projectiles group right in the middle of the target at say 100m, it is better to have the rifle shooting about 3-4cm high (depending on the caliber) at that range, so it will still hit the vital organs of something like a deer at 300m. (Please excuse me if I'm currently in the process of telling granny how to suck eggs.)

However, it still seems to leave me with an unresolved problem. How can you seemingly assign arbitrary values to both hor. and vert. convergence in the game? Once you have determined what one or other will be, the other value is surely predetermined I would have thought???.

[MadTommy]

Thanks lads.

Need to look to see if these convergences can be edit via an ini file rather than the GUI which is painful...

[5./JG27.Farber]

Originally Posted by lonewulf

However, it still seems to leave me with an unresolved problem. How can you seemingly assign arbitrary values to both hor. and vert. convergence in the game? Once you have determined what one or other will be, the other value is surely predetermined I would have thought???.

The ground crew would have looked it up in a book I suppose. You never heard a fighter pilot say my guns were set to 200/400 this is what your saying right? I get it now. Yea but it is what it is and we have the option so we have to set it. I wonder how much control over convergence pilots really had?

Originally Posted by MadTommy

Thanks lads.

Need to look to see if these convergences can be edit via an ini file rather than the GUI which is painful...

Yea the reversal twists your melon... but is it gonna be reversed in the conf.ini aswell? Best off just writing, V and H on a piece of paper and then in put your values, then exchange symbols. - at least thats what I did.

[MadTommy]

Originally Posted by 5./JG27.Farber

Yea the reversal twists your melon... but is it gonna be reversed in the conf.ini aswell? Best off just writing, V and H on a piece of paper and then in put your values, then exchange symbols. - at least thats what I did.

No its not that.. its just there are so many inputs to setup all fighters, it would be really a lot easier to edit the file directly. But I can't find the file where these are located. Its not in the conf.ini, unless I missed it.

Do you know where this data is stored?

[5./JG27.Farber]

user.ini

[MadTommy]

Originally Posted by 5./JG27.Farber

user.ini

Do you mean confUser.ini ? If so i've searched through this and cant see it. I've found no user.ini anywhere.

Thanks for you help

[5./JG27.Farber]

C:\Users\farber\Documents\1C SoftClub\il-2 sturmovik cliffs of dover\user.ini

np