In 1914, the Statax Engine Co. Ltd. of London made a newly designed engine with three variants according to the number of cylinders.

“Caudron with Statax”

-As they were “barrel” type engines, they were extremely thin as we can see in the Caudron in the illustration, where the engine assembly and bulky hoods of the original engine disappeared.

-The 5-cylinder model gave 40 HP, the 7-cylinder delivered 80 HP and the 10-cylinder (double 5) gave 100 HP.

“5-cylinder Statax”

-The above photograph, taken in 1914, belongs to the 5-cylinder 40 HP engine.

-Below we show a diagram of the same engine.

“Section diagram of the 5-cylinder Statax engine”

-The beginnings of this brand began in Switzerland when the designer Hansen conceived them in 1913 at the Statax Motors AG in Zurich.

-During the First World War, development continued in England.

-Meanwhile, Hansen enlisted in the German forces, continuing with his projects there.

-They were barrel-type engines as explained in the main text.

-There were three, five and seven cylinder engines.

-Years later -in 1929- Statax Zurich made another engine, the 29B, in the line of the previous seven-cylinder engines.

“Barrel Statax, model 29B”

“Another Statax 29”

“Statax engine drawing”

-Interestingly, the Statax barrel engines had a fixed shaft and the cylinders parallel to it, rotating around it.

They were two-stroke engines

-Statax Zurich continued with another three-cylinder, two-stroke radial engine but running on the semi-Diesel system.

-It was the S.3 model that gave 55 HP at 3,000 rpm.

“Statax S.3 model”

From Appendix 6: Here is a photograph that is somewhat clearer than the one that appears in the main text.

-It is the author's intention to replace it in the event of a new reissue of the main text that includes the new Appendices like the one you have in your hands. In which case the previous photo would be replaced by the present one that shows more details.

“One of the Statax engines”

-There were Statax engines with 4 to 10 cylinders with an extremely small external diameter, with a lower resistance to advance by almost 80% -as it was said at the time-.

-The engine that we have recently located surprises us because it is mentioned that it only delivers a power of 10 HP.

“A Statax in its frame”

However, research will continue on this Statax model. It belongs to the year 1914 and was shown at the Paris Air Show.

From Appendix 7: The below illustration of a Statax in schematic form seems to suggest the possibility of a variable stroke.

“Simplified schematic drawing”

From Appendix 12: Below we show a new illustration with numbered indices and corresponding explanations.

“Detail of the Statax with explanations”

“Photo and section of the same model 29”

“Section of another engine of the Statax formula”

“Two photos from the time of the 50 HP Statax”

-Some small three-cylinder radial engines of the Statax brand were found and presented below.

“Three-cylinder engine designed in Zurich”

“Another model of the Statax” (pip-Flu)

From Appendix 11: We have more information about the S engines.

-The S.1 engine was a 7-cylinder axial engine that was intended for a GMG-II aircraft.

-This engine did not work well and they made the S.2, an improvement of the S.1, which in the end did not work in this aircraft either.

-Then they made the S.3 which was a 3-cylinder radial engine. It was a 2-stroke semi-diesel that weighed 64 kg and gave 45/50 HP. This engine was installed on the aforementioned GMG-II aircraft.