Anyone tried this crank evac idea yet?

[dinomite]

i believe that would be simply berouli's principal causeing the suction. the venturi is whats in your carbeurator, and it is simply a constriction in the intake tract like this: )( that speeds up the air lowering the pressure (berouli's principal), therefore bringing the gas from the bowl in to equalize the pressure. since the exhaust gas is already flowing, you are simply employing berouli's principal, as no venturi is actually used.

the terms venturi and bernouli are often interchanged, so i don't not know whether venturi refers to the constriction, or to the act of equalizing the pressure (pulling a substance from a resivoir using the flow of a fluid) but i know that bernoulis principal simply states that as a fluid increases in speed, it must decrease in pressure to maintain a constant amount of energy along the flow.....so maybe this is venturi....