A most curious He 100 photo

[Harold Lake]

I happen to disagree with the thoughts of members Mike, Graham and Doug. To me, you don't have to be an "expert" on the Heinkel 100 to see distinct similarities between this aircraft and the ones so well documented in Erwin Hood's work on the type (Midland Counties Publications, 2007). As author Hood so well explained, much of what we previously "knew" about the He 100 is good only for the circular file, so it doesn't suprise me when yet another tiny segment of this story is brought to light. By the way Doug, the supercharger intake is the rectangular opening at the wing root; not the "new" feature within the the port wing.

[Graham Boak]

You are quite right: I have undergone a conversion of Pauline rapidity, if not significance. The comparatively unsophisticated appearance of the undercarriage leg and windscreen are consistent, but I think it took an internal reassessment of the size.

It does occur to me to wonder if the wingroot intake inspired the similar intake on the Russian fighters?

[RolandF]

To me it looks much like a He 100. Especially because the same seller offers a 2nd pic of a similar fighter - and that´s for sure a He 100:

[RolandF]

Another photo of this series is an obviously elder Do 17 with a brand-new unpainted Do 17Z cockpit unit - maybe a prototype.

The 1st He 100 - surely this is no Italian plane because windshield and triangular rear window are quite characteristic for the Heinkel fighter - seems to have a chin radiator of semicircular shape below the engine. The belly radiator otherwise characteristic for the He 100 is not visible. The 2nd He 100 seems to have an even deeper chin radiator under the tarpaulin.
Regarding the sophisticated cooling system of the original He 100 this seem to be attempts to evaluate some more conventional radiator systems.

Regarding the Do 17Z conversion the time of the photographs seem to be not later than ´40, maybe even ´38-39. One might figure this could be a possible testbed for a proposed Jumo 211 installation into the He 100 which needed a different cooling.

Regards

Roland