I made a friend of mine an Elmers #15 engine for Christmas(the one next to the lighter) and I liked it so much I went back and made another one for myself. The second one I machined in one session in the shop in about 4 hours.
I took a few liberties with the intake and exhaust just to make them easier to run on air. Mine can run backwards too.
I took a few liberties with the intake and exhaust just to make them easier to run on air. Mine can run backwards too.