14 by mpweiher | 12 comments on Hacker News.
New top story on Hacker News: XTS-210 25hp rotary engine; 1/5th size/weight of diesel piston engines
XTS-210 25hp rotary engine; 1/5th size/weight of diesel piston engines
14 by mpweiher | 12 comments on Hacker News.
14 by mpweiher | 12 comments on Hacker News.
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