Post Update – Zagreb Technical Museum Engines

By me
All photos me too, copyrighted

Apparently destined to make up all the time since my last childhood visits to the Technical Museum, yesterday I made my third trip there in the space of a month :). A friend had asked me to take her to see the exhibition, an opportunity I used to upgrade the visit to an unofficial aviation history tour :D. Along the way, stopping at the engine section, we had noticed something on one of the engines that had eluded me before…

You may have seen an odd trident-configuration Daimler-Benz piston engine of unknown type down near the end of the report. I had it labeled as a six cylinder, information I then used in my unsuccessful attempts to find out more about it on the net. In a brilliant demonstration of my skills of perception, I had only noticed yesterday that the engine was in fact – a 12 cylinder…

The original engine shot from the previous post. Note that on first sight it looks remarkably like a 6-cyl...
A closer inspection however had revealled that what I had though to be cylinders were actually casings, with the cylinders themselves inside. At two per casing, this doubled the cylinder count 🙂

Armed with this new found knowledge, I once again roved the Internet and think I may have nailed it this time… apparently, this is not a Damiler-Benz, but a Benz Bz.DV, the first German 12-cyl aero engine :). Designed in 1914, it weighed 425 kg and produced 250 HP, but I could not find a list of aircraft that had used it…

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