1968 Sears "Twingle" - a 2 stroke engine with twin pistons in a single cylinder

https://i.redd.it/bok07u8dmcl11.jpg via /r/motorcycles https://www.reddit.com/r/motorcycles/comments/9ek3md/1968_sears_twingle_a_2_stroke_engine_with_twin/?utm_source=ifttt