YOU ARE CORRECT! We actually used Gravity Feed to supply fuel to the carb but without air
from the outside of the fuel can the flow still would not have occurred in a "sealed system".
Take a plastic straw, put your thumb on the bottom of the straw and fill the straw with water. Then quickly flip the straw over and the water will remain in the straw. NO FLOW.
Gravity still will not cause flow in a straw/hose without a "vent" open to atmosphere.
Even Water flowing in a Stream has Atmospheric Air AND Gravity working to cause flow
down a hill. In a cup or a pond you have gravity but still no flow.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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