ebinmaine 72,664 #1 Posted May 18, 2021 Opposed 3 cylinder with 6 pistons. No valve train. No cylinder heads. 1 1 Share this post Link to post Share on other sites
Stepney 2,354 #2 Posted May 18, 2021 Ever read into a Deltic, or an Atkinson cycle engine?? Some fun for spare time.. https://en.wikipedia.org/wiki/Napier_Deltic https://en.wikipedia.org/wiki/Atkinson_cycle 1 Share this post Link to post Share on other sites
8ntruck 7,833 #3 Posted May 18, 2021 (edited) Didn't the Navy use opposed piston diesel engines in the WW2 submarines? I think Fairbanks Morse made them. Tried using them in diesel locomotives for a bit after the war ad well. Didn't work out so well for that application, though. Edited May 18, 2021 by 8ntruck 1 Share this post Link to post Share on other sites
Stepney 2,354 #4 Posted May 18, 2021 26 minutes ago, 8ntruck said: Didn't the Navy use opposed piston diesel engines in the WW2 submarines? I think Fairbanks Morse made them. Tired using them in diesel locomotives for a bit after the war ad well. Didn't work out so well for that application, though. Hm, Im not sure on the US side of things honestly, but you described the English torpedo boats and Deltic engines perfectly. 1 Share this post Link to post Share on other sites
ebinmaine 72,664 #5 Posted May 18, 2021 Here's one you're going to want to read when you can... https://bangshift.com/bangshiftxl/mack-super-pumper-system-locomotive-engine-powered-pumper-extinguish-hell-often/ Share this post Link to post Share on other sites
Maxwell-8 4,367 #6 Posted May 18, 2021 Airinlet and exhaustoutlet on the cilinders are like a 2-stroke. Intresting indeed! 1 Share this post Link to post Share on other sites
