Here is something I found while searching for a candidate for a Japanese panel upgrade.
I had thought this model had been lost with the disk crashes as well. The big difference between this and the other Thunderbolts I have done is that this one has a Hamilton Standard Paddle Blade propeller instead of the Curtiss Electric propellers installed in the others. The different types of paddle blade propellers had slightly different characteristics. I believe there were about 6 different types of propellers installed in the various models of Thunderbolt. 4 are easily identified visually. The other two are very close in configuration.
Either the Curtiss Electric or the Hamilton Standard was better in climb while the other had a better maximum speed. What is really amusing is that the original "Toothpick" propeller was the best of them all for maximum speed though it was fairly poor in climb and acceleration.
Note that while both the P-47 and P-38 were Turbo supercharged fighters, the P-47 was a "True" High Altitude fighter while the P-38 was not.
The P-47 could cruise all day at 30,000 Feet on escort missions with no issues. The P-38 was really an Interceptor with High Altitude capability.
It could get up to altitude quickly and perform adequately (except for Compressibility) but it was not intended to stay there.
At high altitude and with low cruise throttle settings as would be used on escort missions, the fuel / air mixture in the very very long induction system would get quite cold and the fuel would fall out of suspension.and pool in various places. Life would get interesting if the pilot advanced the throttle quickly under these circumstances. Sometimes the engines would self destruct.
Another issue was that although the P-38 could operate at 30,000 Feet and higher, the Compressibility speed got progressively lower.
At 30,000 Feet, Compressibility effects started at around 440 MPH TAS which is only about 15 - 20 MPH above the maximum level speed at that altitude.
Life got much easier when the Lightning served in the Pacific Theater where operations were conducted much lower.
- Ivan.
