It does look to be very well described. I wonder how many were made by the students over the years. I've filed it away for when I have the time. Perhaps I'll try drawing up some patterns for casting some quiet night.
I have some extra bits and pieces for the Simple Simon engine.
The first is a photo of the patterns used.
Now, don't be put off by the amount of work that went into these patterns.
You can make yours from timber and get working results just the same.
You will see that some are made from steel and the reason was purely because of the number of castings required and being steel patterns for the outer casings, gave a quick turn-around.
Others for the cores are still timber as the cores are made in a slightly different manner.
There are also other options for building such as machining from solid or as "built-up" from steel plate.
Really just limited by your imagination and willingness to have a go.
The other addition is the 2 short videos.
Those of keen eye will see in the first video, the battery slowly vibrating it's way off the table. I missed see it originally and it just missed my foot and was the reason why the engine stopped suddenly.
The second video I think it just plain ran out of fuel.
Many thanks to George for his efforts.