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  • Users: BigWallyB
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  1. BigWallyB

    250 MPG car

    http://www.foxnews.com/story/0,2933,165650,00.html Goes along with some other recent threads. Not sure I understand the hold up in mass production of these types of vehicles? What they say about daily mileage is quite true, at least for my family. Honda made some all elec. two seaters...
  2. BigWallyB

    Piston rings

    The "ceramic engines" thread mentioned piston rings and gave me a question to ask. The rings on a typical 4 stroke IC engine are not keyed and thus do move around. However, the rings on my SeaDoo jetski (2 stroke) are keyed presumably to prevent this. Being an EE I don't follow the reasoning of...

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