Author Topic: Question: Oberursel U.II  (Read 1724 times)


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Question: Oberursel U.II
« on: June 19, 2021, 11:00:08 PM »
Does anyone have an idea or a picture of what the Oberursel U.II looked like?
I do not mean the Ur.II, which looks nearly like a Le Rhone 9J.

See the list here:


Offline RLWP

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Re: Question: Oberursel U.II
« Reply #1 on: June 20, 2021, 02:25:57 AM »
According to The Aerodrome it was an experimental two row eighteen cylinder radial. Pretty low horsepower for 18 cylinders

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Re: Question: Oberursel U.II
« Reply #2 on: June 20, 2021, 09:42:28 PM »
Thank you very much!
In the Wikipedia list is a link to the "Airplane Engine Encyclopedia", both mention a 18 cylinder with 200hp, but do not name it.
This makes sense, the U.III was a two row Lambda-Lambda copy.

I have a book about the Steyr-Daimler-Puch AG in Austria from 1864 to 1918. There are nice pictures of the production of a license built Gnome with 11 cylinder, 160hp and 191kg. May be it is derived from the Oberursel Ur.III ? The text call then Gnome, but the look more like a Le Rhone with intake pipes and valve rocker on back side.
On of the aircrafts using this was the Aviatik 30.40 and 30.27. In the "Austro-Hingarian Army Arircraft" of WWI this engine is rated with 150hp.