A warm welcome to all those who are enthusiastic about ROTAX Aircraft Engines or use them.

Since I spent a good 10 years at Franz Aircraft Engines Vertrieb GmbH, Rotax aircraft engines, I have accumulated some knowledge. I would like to share this with all those who find their way here.

There are now more than 60 articles, mainly answering questions from the UL forum in Germany.
Since the same topics from the technical field of Rotax aircraft engines are often asked there, I decided at some point to write articles that are as comprehensible as possible and can be referred to at any time.

On the sidebar, the various topics are arranged according to assemblies.

please bear in mind:
my knowledge of the English language is unfortunately limited.
I have translated the pages with DEEPL.
If anything in the text is unclear, please send an e-mail to: wiki@kleinjung.de so that I can correct it.
Have fun reading!
… but some links go to German pages.

Hello everyone,
It makes everyone happy when you get help.
Unfortunately, there is less and less free help - except here and that won't change. Now a club that means a lot to me needs help in unfortunately unimaginable amounts.
The Akaflieg München needs a new engine for their Schlacro, which will cost around 100K.
Therefore I have decided to start an appeal for donations.
Anyone who would like to thank me for the help I have given them can donate something to the Akaflieg.
Many thanks in advance
Ralle

If anyone has a suggestion for a new topic or discovers errors, please send me an e-mail to wiki@kleinjung.de.

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