This is my first engine and a very simple one at that. The design is from steves-workshop.co.uk with a few changes. I wanted to make a one piece crank to get some experience of offset turning and that worked out fine. The fit of all the mating parts was carefully checked during the build but on assembly the whole thing locked up solid ! Even on such a simple engine little misalignments count. Anyway, with a few adjustments away it went much to my delight; I was hooked. With additional running it has freed up nicely and now runs slowly on a breath of air, no doubt helped by the "generous" flywheel. For scale, the flywheel is two inches diameter.
