Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Thanks guys, it is a surprisingly good engine and would work well in a r/c model.  They come up infrequently on EBay, I think the builder just makes them as a hobby, there is one for sale right now if anyone is interested:
https://www.ebay.co.uk/itm/Steam-engine-runs-well-5-10psi-superb-quality-work/153438664171?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20131017132637%26meid%3D669b97df5061415e8cf9252b6ed38cba%26pid%3D100033%26rk%3D8%26rkt%3D8%26sd%3D192881635685%26itm%3D153438664171&_trksid=p2045573.c100033.m2042

Dave