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About Franklin-Madman

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    Junior Member
  • Birthday 04/29/1952
  1. It was two four-cylinder 1905 Model C Engines coupled together. The Standard Model C engine is described in Scientific American as "The motor is a 5" x 5" flanged cylinder engine, with both exhaust and inlet valves in the heads of the cylinders, and with an auxiliary exhaust port at their base, so that when the piston uncovers this port, a great part of the exhaust blows out through a check valve before the piston exhausts the remainder on the upward stroke" On at least one other special, the check valve was left off and the auxiliary exhaust was open. It also was the first year that Franklin
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