The Murphy Builders Site

No this is not SPAM for pitot tube enlargement.

Does the diameter of the pitot and static hook up lines really matter? I
want to use a fairly small diameter to get through a tight spot. It seems
to me that since it is just pressure it really shouldn't matter what size
they are?? Yes, no, thoughts?

Thanks

Scott
Moose 174




-----------------------------------------------------
List archives located at:
https://www.dcsol.com/default.htm
username "rebel" password "builder"
Subscription services located at:
https://www.dcsol.com/public/code/html-subscribe.htm
List administrator: mike.davis@dcsol.com
-----------------------------------------------------

No this is not SPAM for pitot tube enlargement.

Does the diameter of the pitot and static hook up lines really matter? I
want to use a fairly small diameter to get through a tight spot. It seems
to me that since it is just pressure it really shouldn't matter what size
they are?? Yes, no, thoughts?

Thanks

Scott
Moose 174

No this is not SPAM for pitot tube enlargement.

Does the diameter of the pitot and static hook up lines really matter? I
want to use a fairly small diameter to get through a tight spot. It seems
to me that since it is just pressure it really shouldn't matter what size
they are?? Yes, no, thoughts?

Thanks

Scott
Moose 174




-----------------------------------------------------
List archives located at:
https://www.dcsol.com/default.htm
username "rebel" password "builder"
Subscription services located at:
https://www.dcsol.com/public/code/html-subscribe.htm
List administrator: mike.davis@dcsol.com
-----------------------------------------------------

I wasn't planning on the wing strut route but I may have to consider that.
On mine there is a space above the strut attach point that looks like the
hose would fit through.

Scott

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Bob
Patterson
Sent: Wednesday, September 01, 2004 9:31 AM
To: rebel-builders@dcsol.com
Subject: Re: Does size really matter?


Hi Scott !

You ARE running the lines down inside the wing strut AREN'T YOU !??
It's MUCH easier to hook up that way ....

I wouldn't want to go any smaller diameter than what's needed to
connect to the instrument (1/4" ??) - probably not good to go small &
then large again. The pressures we're measuring are pretty small,
and I would think wall friction could be a factor in a very small tube.
Technically, you're right - the pressure will equalize - but there could
be an unacceptable delay while this happens. ;-) :-)
Static is particulary sensitive to this effect.

I have had good results going from 5/16" at the pitot, down to 1/4"
inside .... but not smaller, and never up in diameter again.

......bobp

-------------------------------orig.-------------------------
On Wednesday 01 September 2004 11:10 am, Scott Aldrich wrote:

No this is not SPAM for pitot tube enlargement.

Does the diameter of the pitot and static hook up lines really matter? I
want to use a fairly small diameter to get through a tight spot. It seems
to me that since it is just pressure it really shouldn't matter what size
they are?? Yes, no, thoughts?

Thanks

Scott
Moose 174




-----------------------------------------------------
List archives located at:
https://www.dcsol.com/default.htm
username "rebel" password "builder"
Subscription services located at:
https://www.dcsol.com/public/code/html-subscribe.htm
List administrator: mike.davis@dcsol.com
-----------------------------------------------------

-----------------------------------------------------
List archives located at:
https://www.dcsol.com/default.htm
username "rebel" password "builder"
Subscription services located at:
https://www.dcsol.com/public/code/html-subscribe.htm
List administrator: mike.davis@dcsol.com
-----------------------------------------------------






-----------------------------------------------------
List archives located at:
https://www.dcsol.com/default.htm
username "rebel" password "builder"
Subscription services located at:
https://www.dcsol.com/public/code/html-subscribe.htm
List administrator: mike.davis@dcsol.com
-----------------------------------------------------