Hi,
Thanks so much for the picture, I would love to see more of them in detail. from all sides and to see what drives the rotor IF driven, or if it is free and only the wheels are driven.
One of the AR Spirit of St Louis aircraft I have uses the very same fuselage, and the hole on top of it was supposed to be used to solder the tinplate wing to the fuselage but instead, AR apparently chose to solder the wing from the sides of it.
Here are pictures of it, with the wing detached:
And with its wing removed:
The solder would have been splashed in that oval hole:
But I think that the AR folks ran into a technical problem: the prewar soldering irons had a really fat body for the tip's heater, and I presume that they had an issue with the assembly gals melting the fuselage sides, so they changed tactics and soldered from the sides in an angle, much easier to do. Here is one with the soldered sides:
Now I have seen 4 different holes configurations, the first I believe being this one with a large square hole underneath:
That first version was marked "FRANCE" inside the fuselage but had no exterior markings. It does not have a tail wheel. The second version is the same but with a small tail wheel.
The third had an oval hole on top but had two rivets to hold the tinplate wing. It is marked "AR FRANCE" on its sides like all subsequent versions. Here is a picture of the first and third versions:
The fourth version is the one of which I posted a pic above that has the sides soldered and a larger tail wheel. The fifth has its top hole diameter reduced (if one is familiar with molding technology, you can remove metal from a steel mold much easier than you can add any) , and served as the fuselage for the autogyro. This one has rubber tires on lead wheels, with the large tail wheel. But obviously AR also produced the same as a standard plane with plain lead wheels. Sometime over the process, the small tail wheel was replaced by one the same size as on the main landing gear. It is also far from impossible that a winged aircraft may have been produced at the same time as the autogyro, using the motor and the rubber tires.
Also, earlier versions have lead-cast prop, later ones have stamped thick sheet-steel prop (much thicker than the wing pressing).
Here are pics of how the standard AR motor (used on every single AR motorized vehicle, from lead-cast cars to larger tinplate trucks to the autogyro) would fit in that plane, driving the main landing gear.
But did the motor also drive the top rotor and if so, how was it driven???
Also is that rotor pressed steel or lead-cast, or a combination of both?
As far as years of production, the first rubber tires appeared on the AR Peugeot "601" coupe issued in 1935 as well as on their Bluebird record cars and rehashed versions of their Peugeot "301" models. Here is one of the "601" with these wheels and tires, sued until 1938 on several cars:
Hence it is perfectly possible that the autogyro with the rubber tires would have been produced the same year. It is also likely that the first production of the Spirit of St Louis would have been issued by AR shortly after the Tootsietoy "Aero Dawn" model from which it is clearly inspired in its construction:
Lots of questions to be resolved... one step at a time before it all vanishes in the great unknown...