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Help and Support Forums => Help and Training => Topic started by: waystin2 on September 17, 2007, 06:28:12 AM

Title: Spit Convergence question
Post by: waystin2 on September 17, 2007, 06:28:12 AM

I have been primarily flying the Spit Mark 8, with both the .303's and the Hispanos set to converge at 350.  When you set your convergence for unlike armaments at the same distance is this horizontally & vertically set to converge or just horizontal?

Title: Spit Convergence question
Post by: Trip01 on September 17, 2007, 06:44:58 AM

It's just horizontal. However different ammunition has different flight characteristics so they do diverge in the vertical as they move away from your aircraft. On the spit 8 the 20mm rounds fly slower and slow down quicker than the .303s.

Trip

Title: Spit Convergence question
Post by: Rolex on September 17, 2007, 06:54:19 AM

Vertical "harmonization" is also set with convergence.

Rounds leave the muzzle at an elevation set to have the round drop to the gunsight center at the convergence distance set. Ballistics characteristics of each weapon are included in convergence setting, so MG and cannons would meet at the same elevation at the convergence distance if set the same.

So, setting your convergence out very far could cause you to shoot above a target that is very close to you, even though the gunsight is on the target.

Here is a link for more info: Trainers site>> (http://trainers.hitechcreations.com/convergence2/convergence2.htm)

The netaces link in my signature has more info on ballistics also.

Title: Spit Convergence question
Post by: Ghosth on September 17, 2007, 08:09:28 AM

Try the 20mm's at 50 farther than the MG's once.

The extra "lob" should have them hitting at the same place as the mg's.

I know it seems screwy, but give it a try once.

Title: Spit Convergence question
Post by: waystin2 on September 17, 2007, 11:46:21 AM

I will try it out tonight.  LW Orange or blue (whichever is fuller).  Go knights!

Title: Spit Convergence question
Post by: Latrobe on September 17, 2007, 11:51:56 AM

I always et my convergences at 400-450 and shoot at 200. This way the shots hit their wings which is the weakest part of the plane.

Title: Spit Convergence question
Post by: Guppy35 on September 17, 2007, 01:33:24 PM

I figure since Johnnie Johnson and Wally Macleod set their real Spitfires for 250, that's the way to go :)

Title: Spit Convergence question
Post by: SlapShot on September 17, 2007, 03:07:23 PM

Quote

Originally posted by Guppy35
I figure since Johnnie Johnson and Wally Macleod set their real Spitfires for 250, that's the way to go :)

And they probably got that close to the enemy before firing too.

I saw one WWII British gent being interviewed and he said that he waited until he got real close before pulling the trigger.

I'm thinking that with the meager amount of 20mm, along with the weakness of the .303, getting in close would allow better use of the 20mm and make the .303s more effective.

Title: Spit Convergence question
Post by: TequilaChaser on September 17, 2007, 04:34:53 PM

here is a link to an older thread referencing the difference between MG's and Cannon's with regards to mixed guns and convergence.....

http://forums.hitechcreations.com/forums/showthread.php?s=&threadid=112424&highlight=nose+mounted+guns

Title: Spit Convergence question
Post by: swoose on September 18, 2007, 02:03:56 PM

I found it useful to go to the TA and type the dot command .target 300. The 300 being whatever distance you want to target to be from your plane. This will tell you the drop on the rounds and helps you know where to put the sight at different distances. It helped my gunnery (which was so bad the only way it could go was up lol). Hope it helps.
  Swoose

Title: Spit Convergence question
Post by: swoose on September 18, 2007, 02:04:55 PM

edit: the target:confused:

Title: Spit Convergence question
Post by: Latrobe on September 18, 2007, 02:26:37 PM

try flying with just friendly icons on in the DA when there's a furball going on. Help my gunning a bit, and it was wayyy fun.

Title: Spit Convergence question
Post by: Ghosth on September 19, 2007, 07:48:09 AM

Latrobe, the problem with that method is your are reducing to half your potential impact on a SINGLE POINT.

Scattering your fire over both wings will take twice as long as placing all your fire on a SINGLE wing.