A long time coming but I started on Elmer Verburgs #6 slider. This is 2X in size and 2 cylinders. It will not look as good as Johan's but made from scrap.
Tom
Did you adjust the rod length per page 3 and step 5? There is a video that show how to put this together it is at the 14.36 min mark in the video that is better I think. I also think they should have made a way to adjust the length of the valve rod. With the piston all the way forward the screw...
Do you have a link to drawing or photos of this engine. If this engine is what I think it is then I made one that is one cylinder. Is your Crank 90 deg or 180 between cylinder?
Tom
I know this is a old post But finally started this engine Elmer #6. I am making it 2 times larger and going to make two cylinders. We will see how this come out.
Have started on the Cylinders 3/4" bore.
Tom