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My vote is to return fuel to only one tank and monitor its quantity so as to not overflow it. Almost put a float sensor in the return tank and a flashing light to warn to switch when full.
A side note that is when I shutdown after a run and restart in the next hour, I hear rumbling in the return tank for a few seconds when the pump is turned on. hmmm, vapor returrning ???? If so, sure glad it can be blown clear before restart! __________________________________________________ Bingo! That's my current leaning.
Enjoy your flight to Mexico.
Charlie
daveleonard@cox.net wrote:
Bob... don't do it.
It is so easy to return the fuel to one of the main tanks, it just cant be worth the hasstle and risk.
I return the fuel to my left tank (like Tracy). But instead of a pump for
transfer I just installed the stock fuel selector. When running off the right tank it effectively transfers the fuel to the left. I set a simple timer (on my engine monitor) to remind me to switch back.
Very simple, easy to install, no extra pump or wiring, no risk of heating
the fuel even on the hottest days and highest altitudes, system work the way it was designed, parts readily available.
I just can't see any advantage of a returnless system.
Dave Leonard
Todd,
I'm going to build a returnless system based on your design. I found this fuel cooler at Jeg's for about $40. Jeg's P/N 771-1009. The finned area is 4.5 X 5 X 7/8 (inch), which I think is a little bigger than the one you made.
http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=3532&prmenbr=361
I'm sure it's nicer looking than anything I could build myself. I'll post pictures of my alternator bracket one of these days to prove it.
Bob White
-- http://www.bob-white.com
N93BD - Rotary Powered BD-4 (real soon)
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