It’s about time to start making the main wings, but I don’t know the shape of the ribs, let alone how many there should be. I have no idea about the structure of the spars or the cooling system circuit, and so on, so I’m hesitant to move forward.
In a higher-resolution drawing I received from a friend years ago, I found what I believe to be the rear carburetor for the central row. While the connection to the engine is omitted, the fuel lines can still be traced. That said, a carburetor placed in such a spot without an air intake would likely rely on air drawn through the heat-dissipation slits. But could it really maintain a balanced workload with the front carburetors, which have proper intakes? The setup must have required incredibly delicate tuning. Then it hit me! The hole at the tip of the M67 propeller hub, combined with the propeller hub design reminiscent of a jet engine’s compressor fins—could this structure actually be intended to provide pressurized air for the rear carburetors?
Compared to the few photographs that show the instrument panel of an actual racer, the one in the museum looks different.
My thoughts on adjusting the instrument positions to match the photo. The shape of the upper panel was also changed to match the photograph.I believe the empty space on the bottom panel would be a good place to mount a kill switch lever or pump lever (for now).