Hi Willit
Due to our lovely administrator throwing down the gauntlet, having seen seen my high speed steam straight runners, I am half way through building my steam springer. It has a flat twin single acting steam plant, copper boiler fired from a vaporising petrol blowlamp. Its a bit of a squeeze into the the hull, but it does go in. I will have it at the Mayhem weekend, but meanwhileI will post a few pics to show progress