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  1. borinotus

    help to tear this engine apart

    No doubt piston rings would be challenging. But I think there’s a flaw in that design regarding piston skirts. You can basically do away with them because there’s no side thrust on the cylinder bore. Wear on bore and rings should be also minimized because of this.
  2. borinotus

    help to tear this engine apart

    Just for completeness: there seems to be a Chinese company (who else?) that specializes in manufacturing non-circular gears. They display some amusing real gearings on their website (www.8625plus2.com). Maybe it doesn’t seem so expensive now… :D To JMW (belatedly): LionelHutz is right. If you...
  3. borinotus

    help to tear this engine apart

    Tbuelna, Good points. The one about thermal expansion is my favorite. Well, that and cost of course, but that’s so materialistic …(;->). Oh, and backlash too. Could it be possible to spring-load the planet gears against the ring gears?. On the other hand, with a 4 inch diameter bore you...
  4. borinotus

    help to tear this engine apart

    I need some help in determining if this mechanism applied to an engine is really a poor idea: www.gearoscillator.com Spare no criticism.

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