Online Community of Zenith Builders and Flyers
what type of engine do you plan to run?
i have installed a couple 914 and just feed the return back into the main line
i did install it into one tank and found that the 914 retuns much more than it uses , over filled the tank faster that it could cross feed to the other tank to maintain level
just saw this discussion, and thought i would join as i am having some of the same questions.. do you remember if the tanks in my wings have any fittings for a return? i can really see in there, if so, i may just use one and run my return back into the tank. I am told he LOM pumps 16 Gal per hour thru its positive displacement pump and thus returns about 6Gal per hour.. which i think should balance ok.
otherwise do you know what the piece of hardware is called that i can use if i cut a hole int he side of one inboard tank and put another line in? i am a bit afraid of putting the return to the mainline incase i get some air in the line.. it may not bleed out.. ust circulate. this this is a valid fear?
I plan to install a BMW 1100 motorcycle engine, wich has fuel injection, in my 701. Both wing tanks wil feed into a small bleeder tank (5 to 10l) to wich also the return line is connected. So no long fuel line back to one of the wing tanks and it can be added later on. A simple float activated switch can give an extra alarm if the level in the bleeder tank starts going down. Not for people who do not like fuel tanks in the fuselage.
i was thinking of 2 options for my return, either return it into my main fuel supply line just forward of my eletric fuel pump, or plumbing it all the way back to the tank. the only reason i would send it back to the tank is to purge any air that might get int here.. your idea of a header tank would not really purge any air would it? or does it have a breather? if it had a breather wouldnt it over fill being filled by the pump? and if it was sealed would you not be afraid of air being stuck in there? i am sure you have thought thru all the situations, but if your system works, i may skip the tank and replumb my return into the my main fuel line..