John haining also drew a 2" scale Ransomes 7nhp engine which you can buy plans for from the people below, but there are probably other. I think I got mine from Xplans or something like that...
There are a couple of pics below of my progress to date. The only casting is the flysheel (for which I made my own pattern). everything else is either machined from solid or fabricated.
http://www.myhobbystore.co.uk/produc...ortable-engine
And yes, I now know the flywheel is on backwards, so have since turned it around, but not in these photos.
Regards,
Doug Meller