In 1913, T.F. Kalep made the 7-cylinder Gnome, produced between 1915 and 1920. One unit can be seen at the Monino museum in Moscow.

From Appendix 10: In the main text this engine is mentioned but we had no illustration. Connoisseurs of its existence at the Monino Museum, now we do have one and show it below.

“Kalep 7-cylinder rotary”

-In the main text it is mentioned that the Gnome engine was made by this brand in Moscow. Now we have two copies, one of them at the Monino Museum.

“Kalep-Gnome at the Monino Museum”

“Schematic diagram with dimensions of the 80 CV engine”

“Drawing and photo of the Kalep-Gnome 60 CV engine”

-The ones built under Gnome's license were mainly those with 60 and 80 CV. Although in the brand's ad 100/110 hp engines are mentioned, as we will see later.

-Kalep also manufactured engines for cars, in this case up to 130 CV.

“Another 60 CV Kalep-Gnome at the Museum”

“Ad for Kalep in Moscow”

“Kalep engine at the mechanics school”

-Of its own design Kalep has bi-rotary radial engines, that is, the engine and a propeller rotating in one direction and the other propeller in the opposite direction.

-In the photo of the School of Mechanics of Gatchina it is said at the bottom of the page that it is Kalep himself who appears in it.

-In other information it is said that he is a student -or teacher-.

-Clearly we can see the bi-rotary system of the engine and propellers by planetary and conical satellites at the front of the engine. It looks like a smaller engine than the previous one, although it has 6 cylinders as well.

"Conical gears between the propellers"

-Certainly both engines do not have a crankcase to keep the cylinders in it. To the author of this work it seems that these are engines in which the cylinders tilt as they are held by the cylinder heads (see the Ufimtsov engine).

-Both are “skeleton” and each connecting rod and piston seem supportive.

“Unknown skeleton engine from a Scandinavian blog”

-It is curious, this engine that appears in a Blog, and about which there is a discussion about its origin. Some comments attribute it to Ellehammer, Others to other "Piquet" builders, another says it is a Farcot "lobster" (?), From Thulin, even Delfosse.

“Another view of the above engine”

-Observing carefully, the one that most resembles is the Kalep of the color photo with the conical gear, which we crave a double of 3 cylinders.

-The research on this engine appeared in Sweden continues.

-As for the possibility that it is an Ellehammer, this builder has two radial 3-cylinder engines, 9 and 18 hp. See main text. It can also be the work of an amateur.

-Theodor Kalep bought a Wright engine with money that his wife contributed to the “Flugmaschinen Wright GmBH” and in the “Motor” factory he tried to increase the power realizing that it did not allow further development.

"Kalep with a Wright Engine made in Russia"

-He built it in the mentioned factory as we see in the photograph. Without knowing the quantity.

-Also as Kalep he made the below Gnome rotary.

“Kalep-Gnome Lambda”