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dave
Joined: 22 Sep 2006
Posts: 1382
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 Posted: Fri Jan 26, 2007 4:43 pm Post subject: Fuel Flow, continued. THe FIX |
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So why not have one shut off for each tank located wher eyou can reach them
- i have both of mine behind the Passenger seat so it a easy reach.
Vent your header tank outside? can this be done with out a suction being
created ?
Use one tank at a time that way you isolate this chance of losing fuel from
one tank only.
I do not have a header tank bu I do have a Dash tank and I draw off the dash
tank all the time but I can open one wing tank in flight at a time and it
transfers fine under presure from the pitot tube static wing tank gas cap
and at the same time the dash tank is pressurized from the pitot tube on the
cap on the dash tank.
I have ZERO fuel issues, complaints , worries or theories as mine has been
perfect.
Dave
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Fri Jan 26, 2007 7:47 pm Post subject: Fuel Flow, continued. THe FIX |
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Sure .
The static ports on the sides of many aircraft have to, by definition, give
neither pitot pressure or suction. Most suction is at or slightly behind
the thickest part of the wing... Just put your vent some where else. If you
want to be sure before you start hacking holes in your plane test the area
with tape and a piece of yarn.
On the other hand if you really want a vacuum install a venturi in the slip
stream.
When I was in school we were told to watch the use of MOGAS as it can (only
can) evaporate faster at altitude. We were also told that many small
airplanes have pitot style forward facing tubes to help pressurize the fuel
tank and there by reduce losses due to evaporation at altitude. Apparently
100LL although higher in octane rating is not any where as volatile as
MOGAS.
Noel
| Quote: | Vent your header tank outside? can this be done with out a
suction being
created ?
|
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