Re: sa750 fuel tank question./Dan&Frank


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Posted by frank (68.59.116.216) on October 11, 2005 at 07:52:10:

In Reply to: Re: sa750 fuel tank question./Dan&Frank posted by Randy on October 11, 2005 at 00:48:05:

Randy,
Perhaps the plans description you have is creating a semantic haze. With the shape of the tank a float type quantity guage can only read the amount above the acro tank = "main" tank. So when that guage reads empty you still have the "reserve" fuel in the acro tank beneath. Or, if inverted* you have only the acro tank (or "reserve") volume available.

Our firewall-side flop tube delivers all of the fuel in the tank. Does not matter if "they" call it "main" tank, "reserve", or "aerobatic" fuel - the flop tube will pick up and deliver every drop to the engine.

I would consider the nipple at the aft bottom of the tank as just a drain line/sump connection.

Cheers, Frank

* The flop tube is physically only able to pick up fuel which has fed down to the acro tank from the main. Therefore it is theoretically possible to roll inverted with a full 27 gallons and only be able to burn the 5 - 7 gallons in the acro tank if you remain inverted long enough to exhaust the acro supply. Roll upright briefly and the acro tank is replenished as long as the main has fuel remaining!


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