It’s another day of sunshine, it’s brilliant.I started learning about watertube boilers and realised I’d have to calculate the volume of steam required. I have worked out the capacity of the double square piston Dake engine and timesed that by the revs per minute required to give me twenty miles per hour with a twenty inch back wheel. I then started with the steam drum on the boiler. Which is only half full of wet steam which requires superheating. How big a propane burner do I need, how big a drum? A boiler man would know but I don’t know a boiler man or know where to find one. I ga