Regards @cmplxty.

OMG, what a fantastic toy!
I have a lot of mechanical friends who would die of having one like that.

You spent two wonderful hours putting it together.
I was surprised by the accuracy of the piston cycle and the cam shaft. You had to place them in time. Amazing.

Surely you had a lot of fun.

PS: The video of the engine running was missing, please!

Your friend, Juan