It is time to be thinking of the next 'project' which will likely be an engine of some sort.
My little 'nutating engine' looks good on the shelf but next time I will be trying for something bigger, bigger because working tiny does not fit my style and makes the job harder. Maybe in the future I will work smaller, meanwhile I am thinking of a single cylinder engine of about 50mm or more bore, I more-or-less have the basic layout firm in my mind except for the top end of the cylinder which is where everything happens.
So, it could be a double acting steam/air engine but how much air would I need to drive something of that size?
Maybe a Stirling or a flame licker, are the proportions close enough that I could make any of the three types for the same basic crank and cylinder? Thinking is if the flame licker does not work I could add a displacer and call it a Stirling or I could add the valve gear and convert to air/steam.
OK, OK, I know I am the one who must find the answers but thats where I am right now.
