At the Hangar

Ivan

Charter Member
There were some discussions recently about Merlin P-40s, so just after screwing up a flight test for my A6M2, I decided to look over my own Merlin P-40s that were done a few years back. The P-40F was pretty much as I remembered with RAF type markings.

RAF_P-40F.jpg

The US Army Air Forces version was just a little different from what I remembered. It is shown in the directory listing as a P-40F-5 and the description shows a much later ""In Service" date than the plain P-40F.

P-40F-5_USAAF.jpg

That wasn't the unusual part. The surprising part was that it was a long-tail variant and I didn't remember building one though I must have done so.
I had to take a look back at the RAF version just to confirm the difference in the length of the tail. The easiest way is to note where the leading edge of the vertical fin meets the fuselage. If it is a short tail, it will meet at about the same place as the horizontal stabilizers. If it is a long tail, it will meet quite a ways back.
The next switch back to the USAAF version confused me even further. It kept the paint scheme of the RAF aircraft. I have seen this happen when the models were identical in differently named aircraft in the directory, but had not seen it before when the models were different as they clearly are in this case.

P-40F-5_WrongPaint.jpg

The next screenshot is just to show in one image that it is both a long tail variant and a Merlin P-40 with the odd Radiator exhaust area.

P-40F-5_LongTail.jpg

How often do you build something and then forget all about it? I must be getting really old and forgetful.
I can tell from the state of the instrument panel that this particular aircraft never finished testing.

- Ivan.
 
This is a project that I do remember though I thought it was lost with the disk crashes.
The P-40M was an interesting model in that it never served with US forces. It was only used by Allied air forces.
This model carries RAAF insignia but no specific unit markings yet.

- Ivan.

P-40M_RFHigh.jpg
 
"I must be getting really old and forgetful"

Please don't give up, we need you here !!

:welcoming::welcoming:

hertzie
 
Thank you Hertzie.
I actually found quite a bit on this restored Game Machine. Unfortunately, I have not found what I was actually looking for, but I did find a lot of other stuff. Apparently I also did an update to the Long Tail P-40K at some point.
It isn't even worth posting a screen shot of that because realistically, most P-40s pretty much look alike. The real differences are internal and that would be reflected in the Air and DP files which don't really screenshot well.

If I build the Short Tail P-40K with a fin fillet and reconfigured the Long Tail P-40F to be a P-40L "Gypsy Rose Lee", I believe I will have every major production P-40. Funny thing is that I never really wanted to even start the first P-40 except that I wanted a target for the A6M5. Pity that I didn't know at the time that those two aircraft probably seldom or maybe even never met.

- Ivan.
 
This was something else I found a day or so ago. This was Eric Johnson's P-38J and didn't really have much on it when I started.
I used it as a "Proof of Concept" before deciding whether or not to spend the time on my own P-38 design from scratch.
There were two things to test.
The first was whether or not my idea of a flight model for the two outboard rotating propellers on the P-38 would work as I was expecting. Turns out that everything there pretty much worked as expected.
The second test was whether or not it was realistic to try to build a good P-38 within the limits of AF99. Indications were that there were not. Yes, I know others have built fairly nice P-38, but my build methods are a bit on the resource intensive side.

This is not a particularly pretty aeroplane, but isn't horrible as far as CFS projects go.

- Ivan.

P-38J-EJ_1.jpg P-38J-EJ_2.jpg P-38J-EJ_3.jpg
 
This evening I figured I would see what I could do about configuring a panel for the P-38 with the gauges that I had been programming the last couple years. Of course, it needed a background. As you can see, the background is a bit of a cheat and the lower left side really didn't come out quite as expected, but that isn't hard to fix.

I started with the configuration of the stock P51D panel and just replaced gauges as far as I could. I used sizes as close as I could get to the stock gauges. That is suggesting that I change some of the default gauge sizes to avoid having to always resize.
Some things worked and some did not. The things that did not do not seem like very difficult problems though.

Also need to do a little more research on how CFS handles fuel tanks.

- Ivan.

Reworked_EJ.jpgNewPanel_V1.jpgOnly_Engine2.jpg
 
The P-38 usually had 4 fuel tanks.
The two Main Tanks were located in the wing center section aft of the main spar.
They were usually around 90 US Gallons capacity each.
The two Reserve Tanks were located in the wing center section but ahead of the main spar.
These were usually 60 US Gallons capacity each.

Proper use would be first to draw from both Reserve tanks to have some room for any extra fuel returned from the carburetors as the engines ran. THEN, the Main tanks were to be expended before the Reserve tanks.
Of course for single engine operation and other emergencies, it was possible to transfer fuel from one side to the other and cross-feed to the opposite engine. The full selection of options for these two fuel selectors (one for each engine) could get complicated.
Programming a set is a non-trivial task and beyond the capability of Ivan's Gauge Factory at this point.

If the CFS 525, 526, 527, and 528 tanks are used (L & R Main, and L & R Aux), the default usage pattern without a selector is predictable. Both Aux Tanks will be used simultaneously and when they are expended, both Main Tanks will be used.
With this pattern and without a selector, the AIR File Aux Tanks must represent the P-38 Main tanks and the AIR File Main Tanks must represent the P-38 Reserve tanks.

The AIR file for this P-38 pre-date the creation of the gauges on the panel so it uses the more intuitive setup of Main = Main and Aux = Reserve. The gauges were created after the usage pattern was observed so they reflect the more correct matching of AIR file fuel tanks to actual aircraft fuel tanks.

The attached screen shot shows these updates and some minor spacing and size adjustments.

- Ivan.

P-38J_MinorPanelUpdates.jpg
 
Back
Top