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hirth

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  1. L

    Can't find any specific tractor configuration propellers for various motors...

    Hi All, I'm currently designing my own ultralight aircraft; currently looking like total weight including fuel will be about 450lbs, to be conservative we'll say 500lbs. I'm designing it to be exceptionally low profile though, at 20" tall excluding wheels, with a streamlined sealed/covered...
  2. L

    Original bd5 650cc hirth engine

    Hirth 650cc dual ignition twin carb. With original exhaust. The upgraded hirth 280r that was redesigned for the bd5 in 1973. (Hirth f20 ba1)Has only a few hours on it and was sealed up in climate controlled storage for years. Will obviously need new oil seals at minimum. Possibly more. Appears...
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