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...
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.
Shopgeezer, if you think that the engines are too small. Just do as I have done make it 2 times as big. If you have a part that is 1/4 inch make it 1/2 inch.
Don't get mad at me for the bold type I could not change it.
You have this wrong. (As a bonus, since the bulb had begun to glow, you know that the resistance had dropped below 45 ohms, meaning your steam powered stepper is actually making more than 108.5 watts.)
As the bulb heats up the resistance go up.