Julius de Waal redraw no 6 to a metric version twice the size of Elmer's. The drawing is nice and clear. I'm also starting with it now, building it Elmer's size except i round it all up to metric sizes.
Well doneWell was i surprised to have it running the fist time, i thought i might have to fiddle a little with the valve timing. I still need to fit it to a nice wooden base.
Run it about for two minutes and then took the air supply off, was running on a mere breath of air, will measure it sometime.