[David Paule]

This is about a six cylinder Anzani engine from around 1919 or so. This round engine is a twin-row-three, in case you're wondering how an even number of cylinders can work in a radial engine.

It arrived here assembled but heavily preserved. The cylinders and accessories are now off, and the case has been split. An engine test stand is built and waiting, and Chad Wille built us a prop.

It has a dead-loss oil system and one single magneto. There are some interesting quirks, like the facts that there are only two bolts to attach each cylinder, or that it uses slippers at the bottom end of the connecting rods rather than a master rod, or that nearly every single part is numbered and assembled to fit that one location.

Craig and Roger are the engine experts here. I expect that they'll comment here too. I'm more of an airframe guy. All of us have a mixed background of hand's-on mechanical work as well as being engineers.

Today, the cylinders were getting cleaned and were being measured to check their basic condition.

In the photos, Roger has the tan hat, Craig has the blue one, and the cylinder in the photo is one of the spares. The picture of the nose of the old airplane is from 1919, showing one of these engines installed on an airplane. You can clearly see how the second row of cylinders is offset from the first row.