4 ms·
See also the Junkers Jumo 2014: http://en.wikipedia.org/wiki/Junkers_Jumo_204 http://en.wikipedia.org/wiki/Junkers_Jumo_204 And its descendant, the Napier Delt
by cstross 12y ago
See also the Junkers Jumo 2014: http://en.wikipedia.org/wiki/Junkers_Jumo_204 http://en.wikipedia.org/wiki/Junkers_Jumo_204
And its descendant, the Napier Deltic engine: http://en.wikipedia.org/wiki/Napier_Deltic http://en.wikipedia.org/wiki/Napier_Deltic
And in particular, the animation of the Deltic layout (three cylinders, three crankshafts (one of them contra-rotating), six(!) pistons): http://en.wikipedia.org/wiki/Napier_Deltic#mediaviewer/File:Napier_Deltic_Animation.gif http://en.wikipedia.org/wiki/Napier_Deltic#mediaviewer/File:...
(Opposed piston engines aren't exactly new.)
- agumonkey 12y agoNot new but first time I see them (even though it's so obvious I feel stupid). So many engines geometries and configuration, it's beautiful. Thanks ps: old reddit thread for other designs http://www.reddit.com/r/technology/comments/82gqi/six_pistons_three_cylinders_three_crankshafts/ http://www.reddit.com/r/technology/comments/82gqi/six_piston...
- tankenmate 12y agoThe reason they aren't more common is because many people tried, but without high precision parts and extensive dynamic analysis it is very difficult to make them work reliably. Have a look at the Deltic, it was very powerful for its size and weight, but was a maintenance nightmare; in both of its major applications, high speed naval patrol boats and high speed trains. The major breakthrough with the dynamics on the Deltic was the one contra rotating crank.