Author Topic: P39Q Gunsight?  (Read 792 times)

Offline Randy1

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P39Q Gunsight?
« on: August 19, 2013, 12:33:00 PM »
Once in awhile I like to take out the P39Q.  On close defense, it can turn pretty tight surprising a few unsuspecting invaders.

Bustr, I did a bit of Googling but could not pin down the sight that is modeled in the P39Q.

http://www.gunsight.jp/b/english/data/sight-e-aa.htm

I went through your old post.  I did find a reference to the N-2C but not for the Q model.

I have the latest Historic pack.  Which should I choose for the P39Q?

Offline earl1937

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Re: P39Q Gunsight?
« Reply #1 on: August 19, 2013, 03:02:50 PM »
Once in awhile I like to take out the P39Q.  On close defense, it can turn pretty tight surprising a few unsuspecting invaders.

Bustr, I did a bit of Googling but could not pin down the sight that is modeled in the P39Q.

http://www.gunsight.jp/b/english/data/sight-e-aa.htm

I went through your old post.  I did find a reference to the N-2C but not for the Q model.

I have the latest Historic pack.  Which should I choose for the P39Q?
:airplane:  Randy, Sawz has posted serveral new gun sights which he made and you might want to consider one of those. They are on our web site and ready for downloading!
Blue Skies and wind at my back and wish that for all!!!

Offline Randy1

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Re: P39Q Gunsight?
« Reply #2 on: August 19, 2013, 03:46:13 PM »
:airplane:  Randy, Sawz has posted serveral new gun sights which he made and you might want to consider one of those. They are on our web site and ready for downloading!

Thank You.  I will sure take a look.

Offline bustr

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Re: P39Q Gunsight?
« Reply #3 on: August 19, 2013, 06:00:44 PM »
P39Q had the N-3A or B gunsight which was shipped with a 70Mil ring and dot, and a fixed reflector head mounted to it. Later in the war some were upgraded with the A1 tilt able head for bombing but, the reticle was still a 70Mil ring and dot. You could now tilt the head raising or lowering the reticle.

That's why I include the N-3 30Mil and 70Mil with ladder ramps because we don't have an active tilt head for any of our gunsights. The 5Mil ticks represent the tilt dial's selections from turning it to tilt the reflector plate by fractions of degree. Turns out they were about 5Mil movements in real life.

I'm sorry but, the historic gunsights are not point and click. In ww2 they never were. Each pilot had to practice using the given gunsight enough to get good shooting with it. Even the active reticle K14 had to be practiced with and it was not a 100% kill solution. It simply improved the ability to actively predict the point to shoot for in low G turns. That was one of the hardest skills to learn for 80% of fighter pilots in ww2.

You may have noticed shooting past 200 yards in this game has many down sides requiring practice to over come them.

PS,

Offline flying at 300 IAS auto level on full zoom. Using the 70Mil with ladder. Bring up the target and fire at the ranges you are interested in. Take screen shots. Then take a copy of the N3B70rmp and add numbers next to the tick marks related to your shooting at the offline target. This is ideal for air to ground with the 37mm. Air to Air at least you will have an idea of the drop, not the lead which practice against the drones will help. Just remember your convergence for the 37mm will matter after you modify the gunsight. I used to create custom K4 gunsights for individuals. I learned the hard way to ask them what their convergence was before doing this testing. One persons personal gunsight is a personal reflection of how they perceive what they are seeing. Practice will always be required to make it a point and click solution.

.target range(1-36000) heading(1-360) azimuth(1-360)

Screen capture - Alt_S

Sometimes when you goto full zoom on maps your gunsight structure disappears into the target. Night time works better to see the target and your gunsight structure.

.time 00:00
I use 01:00. 12:00 resets to noon.
« Last Edit: August 19, 2013, 06:44:07 PM by bustr »
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 Randy1

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Re: P39Q Gunsight?
« Reply #4 on: August 20, 2013, 07:09:58 AM »
If I got your post right, the correct gun-sight  art for the P39Q in AH is the 70mil ring with a dot.?

Offline bustr

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Re: P39Q Gunsight?
« Reply #5 on: August 20, 2013, 06:48:55 PM »
The readme in the USA\AAF folder says that.

But, I'm trying to help you with what I think you would prefer. A way to have some control over aiming your 37mm. Thus the reference to the additional gunsight that I added 5mil ticks to representing the settings from the A1 sight head's adjustable dial. Or even erase all other marks but the 3 or 4 you will need for shooting 600-1000 after testing against the offline target or objects on the ground.

If I did it for 600-1000 and posted that, results would vary greatly for many reasons and disappoint some of this audience as deceitful advertising. I suspect you have your MG on a separate button and can hit things that way with a basic ring and dot. Besides the ACM requirements, the other problem with the P39Q is hitting anything with the 37mm apposed to the P39D with a 20mm option.
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 Randy1

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Re: P39Q Gunsight?
« Reply #6 on: August 21, 2013, 05:46:36 AM »
I was more interested in a what a P39Q pilot would have seen on his sight glass.  I rarely take the P39 but on a whim it is an interesting plane to try.

Thanks for the help.