Re: Fuel pressure at the carburetor?
The pressure a liquid exerts depends on the height/depth of the liquid, its weight density and force of gravity.
Two equations: P = mgh or P = Dw(h) where m = liquid mass, g = gravity, h = liquid height/depth and Dw = liquid weight density.
Either way you do it the answer here, ( 22" height ) = .58 lbs/sq inch.
What no one figured tho' is the # of sq inches of area in the cross section of the tube that feeds the gas to the carburetor. It certainly is not 1 sq inch. The ID of the tube might be 1/8" or .125 ".
Some of you are asleep now with these #'s. If not you can continue on. It is an interesting exercise. The only answer needed here is that the system in a Model A works so the Ford engineers had it figured out OK. Bill
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