Propulsion unit mounted!
Funny enough, I have not glued the engine, only the prop is attached to it and the whole set can rotate, as if it was ordinary rotary. I know it is not correct for the bi-rotary SSh engine. But it will allow me to present the model with various prop orientations. And I can still pour CA glue to make it fixed, if I am bored with it 


@Przemol
@Davos522
Hello PrzemoL, Hello Dutch,
don't let your thoughts lead you astray!
Seen from the outside, the Siemens Halske ShIII is exactly the same as a normal rotary engine.
The propeller is bolted to the engine housing and therefore - logically - rotates at the same speed and in the same direction as the cylinders rotate.
The special feature of this engine compared to a normal rotary engine is that the crankshaft INSIDE the engine rotates at the same speed against the direction of rotation of the cylinders.
The SHIII rotates at a maximum of 900 rpm in one direction and the crankshaft at 900 rpm in the other direction - this results in an effective speed of 1800 rpm.
If the propeller on the model rotates in the same direction and at the same speed as the engine, this is absolutely correct!And by the way PrzemoL - an excellently built model is currently being built on your workbench
https://www.enginehistory.org/Piston/Before1925/SiemensHalskeSh3/01Sh3.gifhttps://www.enginehistory.org/Piston/Before1925/SiemensHalskeSh3/03Sh3.gifhttps://www.enginehistory.org/Piston/Before1925/SiemensHalskeSh3/05Sh3.gifServus
Bertl
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