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Old 11-08-2020, 02:58 PM   #13 (permalink)
It's all about Diesel
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Originally Posted by freebeard View Post
Is this one more unicornish?
Definitely more unicornish, as it seems even more expensive to manufacture.

Do three points of sliding friction and two planetary gear sets have less friction than one main bearing?
Even considering the piston pin as another point of sliding friction just like the main bearings, it would still sound more convincing than having to deal with 3 points of sliding friction and 2 planetary gearsets. Not to mention once again the need for more head gaskets and valvetrain parts as the engine would look more similar to a boxer on the outside. And even though this specific design doesn't seem to be so much more optimized for an oversquare bore-to-stroke ratio as the other, it would still make more sense to have fewer cylinders with a longer stroke from an efficiency standpoint.
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