10 ft is out of the question.... even 6 ft is out of the van. I'll have to stick to the fuel pump. Eric 86-VW4x4 vw4x4@fyi.net 86-SS Syncro Pittsburgh, PA USA 1936-Chrysler 92-Jetta GWC www.fyi.net/~vw4x4/vw4x4.htm On Fri, 7 Feb 2003, David Brodbeck wrote: > On Fri, 7 Feb 2003, Eric Zeno wrote: > > > Assuming the fuel has the > > same weight as water, > > Bad assumption. Gasoline = approx. 6 lbs per gallon. Water = approx 8 > lbs. per gallon. (U.S. gallons) > > > how high would it have to be? > > Reaching back into my fluid power classes... > > Pressure (psi) = height (feet) * density (lbs per cubic foot) / 144 > > Water is 62.4 lbs per cubic foot, so gasoline must be roughly 41.6. > > Solving for height... > > Pressure * 144 / density = height > > So 3 * 144 / 41.6 = 10.4 feet > > The bottom of your tank needs to be 10.4 feet above the heater for a > minimum of 3 psi. The pressure will be a bit higher with a full tank, but > not much. Anyone want to check my math? > > _ _ > __ _ _ _| | | | David M. Brodbeck (N8SRE) Ypsilanti, MI > / _` | | | | | | +----------------------------------------------------- > | (_| | |_| | | | @ cyberspace.org > \__, |\__,_|_|_| "To the optimist, the glass is half full. To the > |___/ pessimist, the glass is half empty. To the engineer, > the glass is twice as big as it needs to be." > |
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