Zenith Aircraft Builders and Flyers
Online Community of Zenith Builders and Flyers
Header Tank Air
Hello Everybody! I am doing a little research on header tank venting ( no vent, one vent, two vents, etc.) and was wondering if anybody has any information as to how much air actually accumulates in a header tank during a "normal" ( i.e. mostly straight & level with some banking turns) flight.Any information would be appreciated. Thanks!
Replies to This Discussion
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Permalink Reply by John Fisk on
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Hey Frank, check out this video from Skytek they built one especially for the zenith 750 has 2 vents very detailed video. i ended up making one myself that is very similar but it holds 2.5 gal.
https://www.rotax-owner.com/en/videos-topmenu/builder/425-750-4
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Permalink Reply by Frank A Pisz on
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Hi John! Thank you9 so much for the helpful information. Grately appreciated. I am combining information that I learned at Oshkosh this year with buildr's/pilot's experiences. I'll post a short report on my findings shortly. Thanks again! Frank
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Permalink Reply by Jonathan Fay on
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Not a Viking issue, but I unport either right or left side (at the main tanks and thus the header empties) when less than 5 gal remains and I slip for an extended time.
That and the fuel stains from Zenith's terrible vent are the bane of my 750 existence.
Roger says he gets all but a few ounces out of the tank. I have done so with careful management, but I don't trust doing it with both tanks so I always have a 5 gallon reserve on one side.
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