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  1. TejasNW

    prop diameter of an Ultracruiser

    Does anyone know off hand what the recommended prop diameter is for a Hummel Ultracruiser? I am trying to do some back of the envelope calculations for a 30 hp motor. I could wait for the plans but have not decided if I would take the plunge or not. If I could use the engine I have that would...
  2. TejasNW

    Fabricating Fuel Tanks from Thin Aluminum

    My plans call for dual in wing aluminum fuel tanks. I am seeking advice on tanks, as I have never done a fuel cell. There was some good information in this thread on thin sheet aluminum; but did not want to hi-jack the thread and detract from the information...
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