D.520 weapons

[otis_me]

Hi folks,

I've been playing the D.520 campaign for a bit(beautiful plane) and have found that its guns are mostly ineffective in my hands. I was wondering if anyone else had the same experience?

• The Hispano HS.404 20mm cannon is good, in fact, i think it's better than the MG FF in the E-3 as it fires through the propeller hub and seems to have a higher muzzle velocity which improves your shooting accuracy... But it only has about 4-5 seconds of ammunition due to the high rate of fire.
• The 7.5mm machine guns are practically useless: they seem to have either a very low muzzle velocity or simply fire in a very odd arc(I wonder what the default convergences are on those) and deal no damage due to the small calibre and lack of numbers. At least they have plenty of ammo for a deflection shot on a cockpit.

Does anyone have any tips for this plane?

[Beazil]

Use ammo from the cannon sparingly.  It is very efficient.  Good diver, not the best climber.  Good turning radius but watch your E carefully....

 

I'm no expert in the 520.  Just my experience.  Hopefully more answers are forthcoming.

[343KKT_Kintaro]

I know nothing about these weapons' technical facts, nor about their proper use in the simulator neither. But I remember one online mission organised by Team Fusion in the TF#3 server and one player, cannot remember his nikname now, shot down up to four 109s in one single sortie.

 

Same as Beazil: "I'm no expert in the 520.  Just my experience.  Hopefully more answers are forthcoming."

[FTC_Karaya]

I remember a certain DramaLama shooting down 12 aircraft in 2 sorties flying the D.520 in that same event.

 

?

Edited June 18, 2021 by Karaya

[343KKT_Kintaro]

On 6/17/2021 at 11:00 PM, otis_me said:

Hi folks,

I've been playing the D.520 campaign for a bit(beautiful plane) and have found that its guns are mostly ineffective in my hands. I was wondering if anyone else had the same experience?

• The Hispano HS.404 20mm cannon is good, in fact, i think it's better than the MG FF in the E-3 as it fires through the propeller hub and seems to have a higher muzzle velocity which improves your shooting accuracy... But it only has about 4-5 seconds of ammunition due to the high rate of fire.
• The 7.5mm machine guns are practically useless: they seem to have either a very low muzzle velocity or simply fire in a very odd arc(I wonder what the default convergences are on those) and deal no damage due to the small calibre and lack of numbers. At least they have plenty of ammo for a deflection shot on a cockpit.

Does anyone have any tips for this plane?

 

 

Hi otis. I asked your question in the French-speaking forums "Checksix".

Sorry for the bad translation from the French, I'm so busy now that I used Deepl.com to spare precious time (I only brought fast and minor corrections).

This is the answer from "rollnloop":

The main problem in the campaigns (like in "On ne passe pas !"), it's the creator of the mission who imposes the ammunition loadout AND the convergence. One potential solution is forgeting the campaigns in the game and play the The Oden campaigns only (which proposes to use the player's parameters via the user.ini checkbox, in which case it's up to him to use a useful convergence - "rollnloop" proposes 150 m).

If you still want to play the campaigns in the game and change the convergence (in "On ne passe pas !", for example), you need to go to the source code of the mission and replace the affected code lines with the following code, which contains the convergence and type of ammo which are used by "rollnloop" himself:

[tobruk:Aircraft.D520_Serie1]
conv _Gun01 bob:Gun.MAC_1934_M39 150 250
conv _Gun03 bob:Gun.MAC_1934_M39 150 250
conv _Gun04 bob:Gun.MAC_1934_M39 150 250
conv _Gun02 bob:Gun.Hispano_Mk_I 150 250
conv _Gun00 bob:Gun.MAC_1934_M39 150 250
belt _Gun01 bob:Gun.MAC_1934_M39 MainBelt 2 2 2 2 1
belt _Gun03 bob:Gun.MAC_1934_M39 MainBelt 2 2 2 2 2 1
belt _Gun04 bob:Gun.MAC_1934_M39 MainBelt 2 1 2 2 2 2
belt _Gun02 bob:Gun.Hispano_Mk_I MainBelt 1
belt _Gun00 bob:Gun.MAC_1934_M39 MainBelt 2 2 2 2 2 1
weapons 1 1

Other than that, there's the answer from another member of the Checksix forums, "Waroff", who says:

Hello,

I may be wrong but on the historical D.520s, the autocannon is in the axis of the propeller with no possibility of modifying the wedge, neither horizontally nor vertically. Its axis is therefore 1° down and 1° to the left of the aircraft axis.

Only the machine guns in the wings are adjustable of +/- 1°30 horizontal compared to the parallel with the autocannon (i.e. stops of 2°30G and 0°30 D) and of +1°30 and -0°30 in site, always compared to the autocannon (i.e. +0°30 and -0°30)

The average height of the machine guns is 625mm below the gun axis and at 1743 and 1905mm D and 1840 and 2000 G.

The axis of aiming and at 41mmG and 505 above the autocannon.

I do not have the diagram of adjustment according to speeds and altitudes which influence the corrections to be brought by the gunner on his sight.

If the modeler took into account these specificities, it should be considered normal that the unaware virtual pilots in the game miss permanently their targets because of the setting of their weapons. Theoretically, all firearms in a D.520 trend to shoot to the left, hence the supposed inefficiency of the guns.

In the new issue of the "Les Ailes" magazine, there is an article on the OPL 39x.

 

 

Sorry otis, in "1905mm D and 1840 and 2000 G" letters D and G stand for Droite (Right) and Gauche (Left).

[otis_me]

On 6/23/2021 at 11:53 AM, 343KKT_Kintaro said:

 

 

Hi otis. I asked your question in the French-speaking forums "Checksix".

Sorry for the bad translation from the French, I'm so busy now that I used Deepl.com to spare precious time (I only brought fast and minor corrections).

This is the answer from "rollnloop":

The main problem in the campaigns (like in "On ne passe pas !"), it's the creator of the mission who imposes the ammunition loadout AND the convergence. One potential solution is forgeting the campaigns in the game and play the The Oden campaigns only (which proposes to use the player's parameters via the user.ini checkbox, in which case it's up to him to use a useful convergence - "rollnloop" proposes 150 m).

If you still want to play the campaigns in the game and change the convergence (in "On ne passe pas !", for example), you need to go to the source code of the mission and replace the affected code lines with the following code, which contains the convergence and type of ammo which are used by "rollnloop" himself:

[tobruk:Aircraft.D520_Serie1]
conv _Gun01 bob:Gun.MAC_1934_M39 150 250
conv _Gun03 bob:Gun.MAC_1934_M39 150 250
conv _Gun04 bob:Gun.MAC_1934_M39 150 250
conv _Gun02 bob:Gun.Hispano_Mk_I 150 250
conv _Gun00 bob:Gun.MAC_1934_M39 150 250
belt _Gun01 bob:Gun.MAC_1934_M39 MainBelt 2 2 2 2 1
belt _Gun03 bob:Gun.MAC_1934_M39 MainBelt 2 2 2 2 2 1
belt _Gun04 bob:Gun.MAC_1934_M39 MainBelt 2 1 2 2 2 2
belt _Gun02 bob:Gun.Hispano_Mk_I MainBelt 1
belt _Gun00 bob:Gun.MAC_1934_M39 MainBelt 2 2 2 2 2 1
weapons 1 1

Other than that, there's the answer from another member of the Checksix forums, "Waroff", who says:

Hello,

I may be wrong but on the historical D.520s, the autocannon is in the axis of the propeller with no possibility of modifying the wedge, neither horizontally nor vertically. Its axis is therefore 1° down and 1° to the left of the aircraft axis.

Only the machine guns in the wings are adjustable of +/- 1°30 horizontal compared to the parallel with the autocannon (i.e. stops of 2°30G and 0°30 D) and of +1°30 and -0°30 in site, always compared to the autocannon (i.e. +0°30 and -0°30)

The average height of the machine guns is 625mm below the gun axis and at 1743 and 1905mm D and 1840 and 2000 G.

The axis of aiming and at 41mmG and 505 above the autocannon.

I do not have the diagram of adjustment according to speeds and altitudes which influence the corrections to be brought by the gunner on his sight.

If the modeler took into account these specificities, it should be considered normal that the unaware virtual pilots in the game miss permanently their targets because of the setting of their weapons. Theoretically, all firearms in a D.520 trend to shoot to the left, hence the supposed inefficiency of the guns.

In the new issue of the "Les Ailes" magazine, there is an article on the OPL 39x.

 

 

Sorry otis, in "1905mm D and 1840 and 2000 G" letters D and G stand for Droite (Right) and Gauche (Left).

Merci!

Thanks for all this information, I'll make sure to use it. And maybe check out the checksix forums myself as I happen to be a French teacher.

[Angry_Kitten]

just had some trigger time in the d520,  EVERYTHIGN was shooting straight to the dot of doom