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Dana
Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA
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 Posted: Mon Jun 29, 2009 7:12 pm Post subject: US tank balance |
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One thing I've noticed with the original dual tanks on my UltraStar is that
they don't drain evenly. With the plane sitting on the ground they level
out, but in flight the left tank tends to run somewhat lower than the right
(they're plumbed together on the inner side of the valves with the outer
sides tee'd together at the fuel strainer). Anybody else see this?
I presume it's due to minor variation in air pressure at the vented caps,
which could be alleviated by poking holes in the top of the tanks and
running a tube between to let the air balance... thoughts?
-Dana
--
Campaigns to bearproof all garbage containers in some national parka have
been difficult, because as one biologist put it, "There is a considerable
overlap between the intelligence levels of the smartest bears and the
dumbest tourists."
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h20maule(at)hotmail.com
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| Posted: Mon Jun 29, 2009 7:31 pm Post subject: US tank balance |
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mine do the same...but i think its because they are different shapes. i assume you have the same size...
Daniel
fs2 amphibian
[quote] Date: Mon C 29 Jun 2009 23:04:33 -0400
To: kolb-list(at)matronics.com; KolbUltrastar(at)yahoogroups.com
From: d-m-hague(at)comcast.net
Subject: US tank balance
--> Kolb-List message posted by: Dana Hague <d-m-hague(at)comcast.net>
One thing I've noticed with the original dual tanks on my UltraStar is that
they don't drain evenly. With the plane sitting on the ground they level
out C but in flight the left tank tends to run somewhat lower than the right
(they're plumbed together on the inner side of the valves with the outer
sides tee'd together at the fuel strainer). Anybody else see this?
I presume it's due to minor variation in air pressure at the vented caps C
which could be alleviated by poking holes in the top of the tanks and
running a tube between to let the air balance... thoughts?
-Dana
--
Campaigns to bearproof all garbage containers in some national parka have
been difficult C because as one biologist put it C "There is a considerable
overlap between the intelligence levels of the smartest bears and th
Windows Live™: Keep your life in sync. Check it out.
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ulflyer(at)verizon.net
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| Posted: Tue Jun 30, 2009 8:15 am Post subject: US tank balance |
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Are you sure your flying wings level - be surprised how many pilots
do this and not realize it themselves until it pointed out to them
including myself.
jerb
At 08:04 PM 6/29/2009, you wrote:
| Quote: |
One thing I've noticed with the original dual tanks on my UltraStar
is that they don't drain evenly. With the plane sitting on the
ground they level out, but in flight the left tank tends to run
somewhat lower than the right (they're plumbed together on the inner
side of the valves with the outer sides tee'd together at the fuel
strainer). Anybody else see this?
I presume it's due to minor variation in air pressure at the vented
caps, which could be alleviated by poking holes in the top of the
tanks and running a tube between to let the air balance... thoughts?
-Dana
--
Campaigns to bearproof all garbage containers in some national
parka have been difficult, because as one biologist put it, "There
is a considerable overlap between the intelligence levels of the
smartest bears and the dumbest tourists."
|
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Dana
Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA
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| Posted: Tue Jun 30, 2009 1:26 pm Post subject: US tank balance |
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At 12:12 PM 6/30/2009, jerb wrote:
| Quote: |
Are you sure your flying wings level - be surprised how many pilots do
this and not realize it themselves until it pointed out to them including
myself.
|
Good point, but no, not in this case... there's up to an inch difference in
the level even at the center where the two tanks are practically touching.
-Dana
--
Giving money and power to government is like giving whiskey and car keys
to teenage boys.
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