Author Topic: F4u Convergence  (Read 2479 times)

Offline bustr

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Re: F4u Convergence
« Reply #15 on: September 28, 2014, 01:15:46 PM »
What most of you are not understanding, or choosing to ignore.

In WW2 the AN\M2 was set to 600yds. Then the convergence was set. Then the gunsight line of sight was set through the convergence point. In the end this resulted with the convergence being the harmonization point of your effective range while the gunsight line of sight passed through convergence point first, then the 600-650 point roughly in the top 1\3 of the dispersion pattern second.

Even if you set your convergence to 600-650, your dispersion and time to target is against you other than for straffing. While with bombers you may open up from that far out but, you are rapidly closing, so your rounds are hitting closer to your effective range with more kinetic energy.

With a few exceptions in our game. None of you are including closing speed\time when you speak about your convergence. The majority of your hits against other aircraft are inside of 400 even if you open up from 650. Very few of you spend all of your time in high speed 6 chases with you and your con at fixed ranges with him in your gunsight for a long time.

This is the same fluff argued early in WW2 with the vast majority of US pilots setting their AN\M2 to 300 knowing if they open up past 400, their speed of closing will make the actual impact closer to their max effective range.
bustr - POTW 1st Wing


This is like the old joke that voters are harsher to their beer brewer if he has an outage, than their politicians after raising their taxes. Death and taxes are certain but, fun and sex is only now.

Offline Biggamer

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Re: F4u Convergence
« Reply #16 on: September 28, 2014, 05:38:59 PM »
bustr im not saying its right or wrong im saying its my self preference to use 650 i can hit nothing with 400 or less some people chose to not shoot unless then are closer then 400 some dont its more of a self preference thing you can argue convergence all day but in the end what works for one person dont work for another, all i know is my aim is better with 650 than it is at any other setting maybe its because i have the picture of lead down at that convergence and not at 400 no clue what it is but thats just fact 650 is better for me
G3-MF

Offline bustr

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Re: F4u Convergence
« Reply #17 on: September 30, 2014, 02:10:15 PM »
Over the years it became obvious if a player allowed you to close to 800, he would allow 650. Many of the long range masters of our game turn off tracers and take advantage of that 1 second lull in many players SA. Once you are at 400, yes it's harder to hit someone because they are very busy not allowing you to.

Then you really need to understand the 100mph principle and how a 100Mil ring works as a deflection estimation tool. Most players cannot judge deflection on demand just like most fighter pilots in WW2 could not. Knowing the numbers of no tracer, shoot at 650, hit and run masters left in our game today. I stopped allowing anyone closer than 1000 who is obviously one of that cadre.
bustr - POTW 1st Wing


This is like the old joke that voters are harsher to their beer brewer if he has an outage, than their politicians after raising their taxes. Death and taxes are certain but, fun and sex is only now.

Offline Saxman

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Re: F4u Convergence
« Reply #18 on: September 30, 2014, 07:56:50 PM »
Over the years it became obvious if a player allowed you to close to 800, he would allow 650. Many of the long range masters of our game turn off tracers and take advantage of that 1 second lull in many players SA. Once you are at 400, yes it's harder to hit someone because they are very busy not allowing you to.

Then you really need to understand the 100mph principle and how a 100Mil ring works as a deflection estimation tool. Most players cannot judge deflection on demand just like most fighter pilots in WW2 could not. Knowing the numbers of no tracer, shoot at 650, hit and run masters left in our game today. I stopped allowing anyone closer than 1000 who is obviously one of that cadre.

Can you bump or repost that info on using the ladder on the Mk.VIII reticle for judging lead?
Ron White says you can't fix stupid. I beg to differ. Stupid will usually sort itself out, it's just a matter of making sure you're not close enough to become collateral damage.

Offline Serenity

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Re: F4u Convergence
« Reply #19 on: October 06, 2014, 11:23:38 AM »
Can you bump or repost that info on using the ladder on the Mk.VIII reticle for judging lead?

Seconded. I've been searching for it all morning.

Offline bustr

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Re: F4u Convergence
« Reply #20 on: October 06, 2014, 01:44:33 PM »
100mph Principle.

For every 100mph your con travels at, lead by 50Mil(1 radius of your 100Mil main ring) while that con is traveling 90 degrees of your line of travel at 1000ft(333yds). This holds true from 45-90 degrees. In low E turns or a con traveling at 5-30 degrees of your line of travel, lead accordingly with the first 50Mil radius of your 100Mil main ring.

Here is a link to my Historic Package. It has a ww2 manuals folder with all of this, including a NAVY glide bombing manual to use the 125Mil tick ladder in the Mk8 attacker reticle. Bag the Hun is most useful for 5-30 degrees low E deflection shooting. The manual assumes it's audience already understands as you increase your turn past a 30 degree deflection, you increase your G and can't hit anything. The 100mph principle assumes you understand this and will be shooting in an unloaded condition. Otherwise you will be pulling a turn with so much G that the con will be under your nose while your bullet drop will be about 20ft at 1000ft. Yes there is a condition that this under nose blind shot works but, it's under 75yds while you suddenly pull hard shooting and hoping you are avoiding a collision message.

Remember, don't unsip this in your game sights folder. And every gunsight.bmp file has a gunsight.mil size control file that has t be copied with it into the game's sights folder.

Download Link ===>> http://www48.zippyshare.com/v/26509442/file.html
bustr - POTW 1st Wing


This is like the old joke that voters are harsher to their beer brewer if he has an outage, than their politicians after raising their taxes. Death and taxes are certain but, fun and sex is only now.

Offline Serenity

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Re: F4u Convergence
« Reply #21 on: October 07, 2014, 08:21:28 AM »
100mph Principle.

For every 100mph your con travels at, lead by 50Mil(1 radius of your 100Mil main ring) while that con is traveling 90 degrees of your line of travel at 1000ft(333yds). This holds true from 45-90 degrees. In low E turns or a con traveling at 5-30 degrees of your line of travel, lead accordingly with the first 50Mil radius of your 100Mil main ring.

Here is a link to my Historic Package. It has a ww2 manuals folder with all of this, including a NAVY glide bombing manual to use the 125Mil tick ladder in the Mk8 attacker reticle. Bag the Hun is most useful for 5-30 degrees low E deflection shooting. The manual assumes it's audience already understands as you increase your turn past a 30 degree deflection, you increase your G and can't hit anything. The 100mph principle assumes you understand this and will be shooting in an unloaded condition. Otherwise you will be pulling a turn with so much G that the con will be under your nose while your bullet drop will be about 20ft at 1000ft. Yes there is a condition that this under nose blind shot works but, it's under 75yds while you suddenly pull hard shooting and hoping you are avoiding a collision message.

Remember, don't unsip this in your game sights folder. And every gunsight.bmp file has a gunsight.mil size control file that has t be copied with it into the game's sights folder.

Download Link ===>> http://www48.zippyshare.com/v/26509442/file.html

Wonderful! Thank you so much for all of the work you put into this!

Offline Saxman

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Re: F4u Convergence
« Reply #22 on: October 12, 2014, 11:42:27 AM »
Was playing around with it last night against the drones offline, and damn, does that work. diving down at about 45 degrees deflection, throttled back (but no gear) in the Corsair, line the bandit up on the 100mil ring, open up at ~400yds on the range counter (guns harmonized at 300yds), and BAM, every time. Under 45 degrees using the 50mil ring was the same results.
Ron White says you can't fix stupid. I beg to differ. Stupid will usually sort itself out, it's just a matter of making sure you're not close enough to become collateral damage.