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Hi! Usually I build IC engines, but as I have never built any hot air engines, I thought to give it a try. The lamina flow or thermoacoustic engine is probably the simplest engine to build. This project took only 1 day to build. The most challenging part was to find a perfectly round test tube...

Hi All! Probably everyone here knows the excellent small hot bulb and diesel engines from Find Hansen. I've already built several IC engines, but all of them running with regular gas and electronic ignition. Actually I don't like electronic ignitions as a battery is always required, and...

Hi! Today I fired up my new gearless hit and miss engine for the first time and to my surprise it startet and ran very well right from the beginning! I aquired some cast iron parts, the rest is entirely my own design. It's running using a petrol vapour carburetor similar to the design of Jan...

Hi all, I'm currently bulding a hit and miss engine mostly my own design and fairly large with 100 cm³. It's mostly built out of scrap iron and scrap aluminium and fairly cheap. But basically the most expensive stuff on this engine is the bearing bronze required for the crankshaft and...