Unfortunately, the beautiful sound on the video is not properly recorded.It runs like the original from 1916. At idle, about 800rpm not all cylinders are running. But with increasing speed more and more cylinders are fireing. From about 2000 rpm, it runs on all nine cylinders. The speed is limited to 2500 rpm for safety reasons. The propeller is a 36 "x20", giving a thrust of about 150N at 2500 rpm.

Selected pictures of the production and test run. Approximately 600 manufactured individual parts.

Displacement: 450cc
Rated speed: 2500 rpm
Fuel: oil / gas 1:25
Lubrication: Total loss lubrication of crankshaft, connecting rod, camshaft, rod and rocker arm
Construction time: approx. 2 years according to plans by Stephen Wessel.