REFLECTOR: Fuel sight guages..why?

[Terry Miles]

Dave,

Yes, I was all the way into the tank.  It worked fine that first intro to
fluid.  I’d say I just drilled it at the bottom
can’t say I recall anything
of note.  I am inclined (at some future point with nothing else going on) to
see if I can push to guitar string from a small drill point at the top of
the tube and see if I can open it up again.

I am thinking it is just fuel tank contamination.  Slug like stuff maybe
from fine sanding dust.  I never tried to contact anyone on it or call
Akinson.  Do you have any thoughts?

Terry

 

  _____  

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of David Bertram
Sent: Friday, February 15, 2008 5:49 PM
To: reflector at tvbf.org; reflector at tvbf.org
Subject: Re: REFLECTOR: Fuel sight guages..why?

 


Al I also have the Atkinson sight gauges and I also use mogas.  Both of my
gauges are stopped up.  Where exactly did you drill through the gauge and
did you go all the way into the tank?  Dave Bertram

 

-------Original Message-------

 

From: Velocity Aircraft Owners and Builders list <mailto:reflector at tvbf.org>


Date: 02/15/08 11:37:51

To: 'Velocity Aircraft Owners and Builders list' <mailto:reflector at tvbf.org>


Subject: Re: REFLECTOR: Fuel sight guages..why?

 

Alex wrote:

 

The fuel flow computer can be pretty accurate for burn rate, but not always,
especially on mine, which has a return line, so there are 2 transducers and
the computer needs to do the math to figure out how much is being burned- so
less accuracy- also any cavitation in the return line will make them even
less accurate- so I won’t really rely on them, 

 

I agree with these comments – when using flow scan type flow measurement.
If the measurement is made by using the fuel injection pulse width and pulse
count on electronic injection system – as mine is; it is very accurate.
After some calibration adjustment the fuel burn is within a couple percent
of measured.

 

Terry wrote:

 

I have the Akinson sight gauges, and for some reason my LH one is blocked.
It worked fine for one day only when I was doing my mo-gas slosh of the
tanks during construction,

 

As I learned the hard way; the white plastic backing in the Atkinson sight
gauge swells in the presence of auto fuel, and will cause the small holes to
the tank to close. I was able to open mine a couple of times using a wire
through the filler cap (my cap is closer to the fuselage than standard); but
it always closed again.  Vance sent me a new gauge which includes metal
grommets to put in the holes.  

 

Rather than remove/replace the gauge, I drilled ¼” holes through the clear
from the cabin side, inserted the grommets and closed the hole with EZpoxy
microglass.  Now it works.

 

Al

 



 

 

 

 <http://www.incredimail.com/index.asp?id=54475> 

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