Author Topic: 109K-4 Convergence  (Read 5858 times)

Offline grizz441

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Re: 109K-4 Convergence
« Reply #90 on: May 11, 2012, 01:12:15 AM »

Offline bustr

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Re: 109K-4 Convergence
« Reply #91 on: May 20, 2012, 03:40:40 PM »
Dang Grizz thought you were going to wax profound here and tell people how to draw the secret dry erase lines on their monitor now that you are retired and in the Aces High Hall of Fame.

 :)
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 RTHolmes

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Re: 109K-4 Convergence
« Reply #92 on: May 20, 2012, 03:59:36 PM »
71 (Eagle) Squadron

What most of us want to do is simply shoot stuff and look good doing it - Chilli

Offline bustr

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Re: 109K-4 Convergence
« Reply #93 on: May 30, 2012, 05:35:27 PM »
Troof.

To 400 yards this is the flatest shooting and was the easiest in the drone circuit to single shot on demand. In the 262 I set the lower guns to 650 and upper to 350. The biggest problem became understanding high speed lateral inertia and it's effect on gunnery in the 262. I don't fly it often. Other wise out to 400 level and slow this was devastating in single taps. The Ta152 shoots it's best if you level the wings before shooting. It's harder to shoot accurate banked lead as with the K4 and 262.

Bf109-K4 -- Conv MK108 350 yards
290TS Auto level

Target-----Drop
100-------(+1.8in)
150-------(+5in)
250-------(+9in)
350-------(0.0)
450-------(-4.5ft)
550-------(-12.5ft)
650-------(-27ft)
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 JOACH1M

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Re: 109K-4 Convergence
« Reply #94 on: May 30, 2012, 06:06:54 PM »
I just point the trigger where he's gonna be and just shoot.  :)
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Offline bustr

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Re: 109K-4 Convergence
« Reply #95 on: May 30, 2012, 07:32:08 PM »
Dosen't hurt to know the non-real life angle to push your hollow airscrew shaft up through the spinner to turn the softball under hand pitch trajectory of the Type I, 3 cm Minengeschoss into a baseball fat lazer pitch to 400 yards. The few inches of ballistic trajectory and dispersion above gunsight level actualy helps even the random dispersion to average a slow but pretty much level shot pattern to 400.

From coalt your shots are not so much elevation dependant as lead timing dependant.

Bf109-K4 -- Conv MK108 350 yards - Airscrew shaft is fake world tilted up.
290TS Auto level

Target-----Drop
100-------(+1.8in)
150-------(+5in)
250-------(+9in)
350-------(0.0) <--Yes Joachim: "I just point the trigger where he's gonna be and just shoot."
400-------(-2ft) <--Pretty flat shooting if you know this is -2Mil@400 or just a smidge under center of your gunsight.
450-------(-4.5ft)
550-------(-12.5ft)
650-------(-27ft)

2ft versus 11ft at 400yd. 400m=437yd drop=12ft.

Real world K4 pilots would have killed for their MK108 trajectory to be like the MK103's even at 360m\sec slower. MK108 and the MK103 being introduced into our new Me410 both shoot the same Type I, 3 cm Minengeschoss. MK108 shoots 500m\sec dropping like a lead ballon versus the MK103 shoots 860m\sec like the Hisspano but, with grenades for explosive warheads.
----------------------------------------------------------------------

K4 real world tater numbers based on cannon locked into the engine line shooting from zero.

All values in the "Drop" column are inches and feet below the engine "0" centerline.

Gunsight line of sight intersects the 400m impact point at (-12ft).
-----------------------------------------------------------------------

Range(M)..m\sec...ToF.....Drop......Disp......RH.Spin.Drift
0...............500......0... .....0........0...........0
50.............486....(.10s)...(2in).....###.......(1.7in)
100...........472....(.21s)...(8in).....(6.8ft)...(3.7in)
150...........459....(.31s)...(1.5ft)...###.......(5.9in)
200...........446....(.42s)...(2.7ft)...(14.0ft)..(8.4in)
250...........434....(.54s)...(4.4ft)...###.......(11.0in)
300...........422....(.63s)...(6.5ft)...(21.9ft)..(1.1ft)
350...........411....(.77s)...(9.0ft)...###.......(1.3ft)
400...........400....(.90s)...(12.0ft)..(30.2ft)..(1.6ft)<--- Revi LoS intersects here.
425.......................... ............................. ..(1.7ft)
450...........390....(1.02s)..(15.5ft)..###.......######
500...........379....(1.15s)..(19.6ft)..(39.2ft)..######
525.......................... ............................. ..(2.25ft)
550...........370....(1.29s)..(24.0ft)..###.......######
-----------------------------------------------------------------------

Even though the Revi LoS was tilted down to intersect at 400m giving you the illusion of a 400m center to your reticle which was an aid for shooting at bombers. You were still pulling your aircraft's nose up to achieve the shot becasue the barrel of the MK108 was not tilted up to achive a 400m center of impact while flying level like the 110, 163 or 262 in the real world. Shots between 100-250m at fighters you would raise your nose to shoot. Unlike in the game you can tilt the barrel up via convergence to shoot with your K4 level making your manuvering easier to take shots. This gamey aspect of motor mounted MK108 is getting a bit long in the tooth now that the MK103 is being introduced to the game.
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 HamrDown

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Re: 109K-4 Convergence
« Reply #96 on: May 31, 2012, 12:52:37 PM »
I have mine set to 400...seems good.

Offline Babalonian

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Re: 109K-4 Convergence
« Reply #97 on: June 06, 2012, 06:26:03 PM »
Babs,

  This isnt quite right,at 425 conv anything less than that distance the round will be low,check Bustr's tables,the round only rises to the pipper at conv distance,it doesnt fly above and drop down into the pipper like shooting in RL. If this convergence range works for you great but your discription of the flight path of the bullet is not right.

  You can easily check this with the dot target,set to 200 and see where your rounds land,I'm betting they will be slightly low until you push the target out to conv. distance and then drop off once past the conv. distance.




    :salute


Bustr's data (and your post) is spot on, after payign closer attention to how it's workign these days.  So then I was wondering why I think it's chucked high, but otherwise I definetley still like 425 because it stays pretty flat all the way out there. 

As to the illusion of it being chucked high, If Im pulling back on the stick in a tight turn, and make a near dead-distance snap shot on a target passing under my nose to above it or some similar pass, the delay/lag in the HE detonating and damage being displayed on the target gives almost a near-perfect illusion to being pitched relatively high to your LoS at a near-dead distance.

More fun was getting so close to one target a night or two ago, squezing a burst of taters, and instantaneously killing the target while hiting my oil, killing my engine, and breaking my radiator.  Aparently the target was inside my hollow propeller shaft, and I blew off the front half of my engine.
« Last Edit: June 06, 2012, 06:29:08 PM by Babalonian »
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Wow, you guys need help.