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Curt Thompson
Joined: 09 Jan 2009
Posts: 18
Location: Redmond, WA, USA
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 Posted: Mon Sep 07, 2015 5:40 pm Post subject: First flight of N701GT |
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| Quote: | | I spent eight years plans building my CH701. I asked a lot of questions here and received a lot of insight. Thanks for all the help from a lot of you. Here is a video of the first flight:https://youtu.be/Dh7dc-o7J0Y Curt ThompsonRedmond, WA, USA |
[quote][b]
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ch701builder(at)yahoo.com
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| Posted: Tue Sep 08, 2015 10:12 am Post subject: First flight of N701GT |
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HI Curt,
Congratulations!!!!
Couple of questions. Rightside of cockpit, what are the 3 lines coming in to the cabin. I am assuming you have fuel, some electrical, and ?????
Keith
N38.9940, W105.1305, Alt.9,100'
CH701 Scratch..... mostly
********************************************************************************************************************************
--------------------------------------------
On Mon, 9/7/15, Curt Thompson <charlievictor102(at)hotmail.com> wrote:
Subject: First flight of N701GT
To: zenith701801-list(at)matronics.com
Date: Monday, September 7, 2015, 7:39 PM
I spent eight years plans building my
CH701. I asked a lot of questions here and received a
lot of insight. Thanks for all the help from a lot of
you. Here is a video of the first
flight:https://youtu.be/Dh7dc-o7J0Y Curt
ThompsonRedmond, WA,
USA
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Curt Thompson
Joined: 09 Jan 2009
Posts: 18
Location: Redmond, WA, USA
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| Posted: Wed Sep 09, 2015 5:12 pm Post subject: First flight of N701GT |
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Keith,
Those three lines are all fuel system related. One is the fuel supply line,
one is the return from the engine fuel rail (via duplex fuel selector
valve), and the other is a vent line from my header tank back to the top of
my wing tank. Here is a link to my POH which has a diagram of the fuel
system:
https://www.dropbox.com/s/058bv17ebp3vkcl/N701GT%20POH.pdf?dl=0
Several people have reported that fuel would not flow to their gascolator
from one tank until the other tank was fully consumed. They were forced to
watch one full tank as the fuel gauge on the opposite side ran dry. Then
the fuel from the full tank would drain and the two tanks would show about
1/2 full. I had a theory that there was a bubble of air in the gascolator
that was blocking the flow from one side. Once one tank was consumed, that
bubble could escape through the empty tank and then the fuel from the full
tank would flow. I asked a few question here on the CH701 Matronics list
about this and really didn't get any clear answers. That would drive me
nuts watching the gauge on one side slowly go to zero not knowing if when it
was empty if I would be looking at an engine out landing. Once the bubble
was cleared, this issue never occurred again until the fuel system was
completely drained.
Quite a while ago I prototyped the fuel system using clear fuel lines. I
just never got around to publishing what I found but I probably should have.
I think I was able to duplicate the issue. Hopefully those interested can
figure out what I did from the fuel system drawing of the POH and this
video:
https://www.dropbox.com/s/s546nx5fq69onpx/IMG_0896x.MOV?dl=0
I also have a bunch of build pictures here that I used to get my Repairman's
Certificate. There might be some useful info there. They can be found
here:
http://www.n701gt.com/
Hope this is helpful,
Curt
--
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ch701builder(at)yahoo.com
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| Posted: Wed Sep 09, 2015 7:33 pm Post subject: First flight of N701GT |
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Evning Curt,
Thanks for the info, good interesting video... but ... the www.n701gt.com thumbnails do not point to anything.
Have a good evening.
Keith
****************************************************************************
--------------------------------------------
On Wed, 9/9/15, Curt Thompson <charlievictor102(at)hotmail.com> wrote:
Subject: RE: First flight of N701GT
To: zenith701801-list(at)matronics.com
Date: Wednesday, September 9, 2015, 6:56 PM
--> Zenith701801-List message
posted by: Curt Thompson <charlievictor102(at)hotmail.com>
Keith,
Those three lines are all fuel system related. One is
the fuel supply line,
one is the return from the engine fuel rail (via duplex fuel
selector
valve), and the other is a vent line from my header tank
back to the top of
my wing tank. Here is a link to my POH which has a
diagram of the fuel
system:
https://www.dropbox.com/s/058bv17ebp3vkcl/N701GT%20POH.pdf?dl=0
Several people have reported that fuel would not flow to
their gascolator
from one tank until the other tank was fully consumed.
They were forced to
watch one full tank as the fuel gauge on the opposite side
ran dry. Then
the fuel from the full tank would drain and the two tanks
would show about
1/2 full. I had a theory that there was a bubble of
air in the gascolator
that was blocking the flow from one side. Once one
tank was consumed, that
bubble could escape through the empty tank and then the fuel
from the full
tank would flow. I asked a few question here on the
CH701 Matronics list
about this and really didn't get any clear answers.
That would drive me
nuts watching the gauge on one side slowly go to zero not
knowing if when it
was empty if I would be looking at an engine out
landing. Once the bubble
was cleared, this issue never occurred again until the fuel
system was
completely drained.
Quite a while ago I prototyped the fuel system using clear
fuel lines. I
just never got around to publishing what I found but I
probably should have.
I think I was able to duplicate the issue. Hopefully
those interested can
figure out what I did from the fuel system drawing of the
POH and this
video:
https://www.dropbox.com/s/s546nx5fq69onpx/IMG_0896x.MOV?dl=0
I also have a bunch of build pictures here that I used to
get my Repairman's
Certificate. There might be some useful info
there. They can be found
here:
http://www.n701gt.com/
Hope this is helpful,
Curt
--
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