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[rebel-builders] Static port

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Miller, Ross W

[rebel-builders] Static port

Post by Miller, Ross W » Sun Feb 19, 2012 6:24 pm

In my 40+ years as a pilot and 17 years as a Test Pilot, static ports on the inside of the cabin/cockpit are for emergency purposes only, as Roger states below, and will have some degree of error, depending on vent/door/window configuration/position.

Ross Miller
Moose 203SR
Ross.miller@gdit.com

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Roger Cole
Sent: Friday, June 11, 2010 1:42 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Static port

C-172s and other TC airplanes typically have two static ports: one on
the outside, and one inside the cabin with a valve to select one or
the other. The outside static port is used for normal operation. If
the outside port becomes fouled (by ice, for example) the inside port
can be selected. The Cessna 172 manual warns that the inside port is
not as accurate as the outside port.

Roger Cole
Murphy Elite #709
rcole927@earthlink.net



On Jun 10, 2010, at 10:37 AM, Gary Gustafson wrote:
I have vented my static pick up to inside the cabin and it
reads wrong. I have vents for cooling air into the cockpit.
When I open the vents I read 400 to 500 feet lower than
with the vents closed. I am not sure whether the cockpit is
a bit pressurized, either negatively or positively.
As a result, I have purchased a static port and will be
installing it soon about 1/3 of the way back on the tail
cone. Will try and remember to send the results.


-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Charlie Eubanks
Sent: Monday, June 07, 2010 6:24 PM
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Static port

Hello All

I have read everything in the archives about the location of the
static port

on the Rebel. The only thing everybody seams to agree on is to vent it
inside the cabin. I am not to sure how well that would go over with
the
people who will do the initial and subsequent bi-annual inspection
for my
mode "C" transponder? What if I plumbed all the flight instruments
and the
encoder together and ran the static line outside and a couple of
feet up in
to the left side lift strut with a vented plug in the end? I know of a
couple aircraft that do just that. Would that make a difference?
Anybody
tried that?

Charlie E. 802R






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Tim Saxton

[rebel-builders] Static port

Post by Tim Saxton » Sun Feb 19, 2012 6:24 pm

You can get a pitot-static air kit here http://www.safeair1.com/PS_1.htm. It
uses two static ports which are placed on opposite sides of the aircraft,
typically mid tailcone for the most accurate static readings. This is what
I'm planning on using.

Tim
SR060

----- Original Message -----
From: "Miller, Ross W" <Ross.Miller@gdit.com>
To: <rebel-builders@dcsol.com>
Sent: Friday, June 11, 2010 2:24 PM
Subject: RE: [rebel-builders] Static port

In my 40+ years as a pilot and 17 years as a Test Pilot, static ports on
the inside of the cabin/cockpit are for emergency purposes only, as Roger
states below, and will have some degree of error, depending on
vent/door/window configuration/position.

Ross Miller
Moose 203SR
Ross.miller@gdit.com

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Roger Cole
Sent: Friday, June 11, 2010 1:42 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Static port

C-172s and other TC airplanes typically have two static ports: one on
the outside, and one inside the cabin with a valve to select one or
the other. The outside static port is used for normal operation. If
the outside port becomes fouled (by ice, for example) the inside port
can be selected. The Cessna 172 manual warns that the inside port is
not as accurate as the outside port.

Roger Cole
Murphy Elite #709
rcole927@earthlink.net



On Jun 10, 2010, at 10:37 AM, Gary Gustafson wrote:
I have vented my static pick up to inside the cabin and it
reads wrong. I have vents for cooling air into the cockpit.
When I open the vents I read 400 to 500 feet lower than
with the vents closed. I am not sure whether the cockpit is
a bit pressurized, either negatively or positively.
As a result, I have purchased a static port and will be
installing it soon about 1/3 of the way back on the tail
cone. Will try and remember to send the results.


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elist

[rebel-builders] Static port

Post by elist » Sun Feb 19, 2012 6:24 pm

I've got my static port down about halfway in the tail. I currently have
just one and it works great.

A second internal static port is likely for IFR certification on the Cessna
in case the outside one is blocked. So, likely no need for an internal
static port unless it is your only one.

Eric
N645E

--------------------------------------------------
From: "Charlie Eubanks" <charlie@troyairpark.com>
Sent: Friday, June 11, 2010 2:19 PM
To: <rebel-builders@dcsol.com>
Subject: Re: [rebel-builders] Static port
Thanks Roger
I will be eager to hear what you find. I think Eric Fogel has a similar
location on his Elite. I wonder how well his works?
Charlie
----- Original Message -----
From: "Roger Cole" <rcole927@earthlink.net>
To: <rebel-builders@dcsol.com>
Sent: Friday, June 11, 2010 3:41 PM
Subject: Re: [rebel-builders] Static port

C-172s and other TC airplanes typically have two static ports: one on
the outside, and one inside the cabin with a valve to select one or
the other. The outside static port is used for normal operation. If
the outside port becomes fouled (by ice, for example) the inside port
can be selected. The Cessna 172 manual warns that the inside port is
not as accurate as the outside port.

Roger Cole
Murphy Elite #709
rcole927@earthlink.net



On Jun 10, 2010, at 10:37 AM, Gary Gustafson wrote:
I have vented my static pick up to inside the cabin and it
reads wrong. I have vents for cooling air into the cockpit.
When I open the vents I read 400 to 500 feet lower than
with the vents closed. I am not sure whether the cockpit is
a bit pressurized, either negatively or positively.
As a result, I have purchased a static port and will be
installing it soon about 1/3 of the way back on the tail
cone. Will try and remember to send the results.


-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Charlie Eubanks
Sent: Monday, June 07, 2010 6:24 PM
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Static port

Hello All

I have read everything in the archives about the location of the
static port

on the Rebel. The only thing everybody seams to agree on is to vent it
inside the cabin. I am not to sure how well that would go over with
the
people who will do the initial and subsequent bi-annual inspection
for my
mode "C" transponder? What if I plumbed all the flight instruments
and the
encoder together and ran the static line outside and a couple of
feet up in
to the left side lift strut with a vented plug in the end? I know of a
couple aircraft that do just that. Would that make a difference?
Anybody
tried that?

Charlie E. 802R






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Charlie Eubanks

[rebel-builders] Static port

Post by Charlie Eubanks » Sun Feb 19, 2012 6:24 pm

Eric

Glad to hear your static port works so well that's really helpful to know.
From the pictures on your web site it looks like it is located a couple of
inches forward of bulkhead "C". Of course I am not sure Elite's bulkhead "C"
is the same as Rebel's bulkhead "C" But this gives us a good idea.

Thanks

Charlie E.

----- Original Message -----
From: "elist" <elist@whidbey.com>
To: <rebel-builders@dcsol.com>
Sent: Saturday, June 12, 2010 10:16 AM
Subject: Re: [rebel-builders] Static port

I've got my static port down about halfway in the tail. I currently have
just one and it works great.

A second internal static port is likely for IFR certification on the
Cessna
in case the outside one is blocked. So, likely no need for an internal
static port unless it is your only one.

Eric
N645E

--------------------------------------------------
From: "Charlie Eubanks" <charlie@troyairpark.com>
Sent: Friday, June 11, 2010 2:19 PM
To: <rebel-builders@dcsol.com>
Subject: Re: [rebel-builders] Static port
Thanks Roger
I will be eager to hear what you find. I think Eric Fogel has a similar
location on his Elite. I wonder how well his works?
Charlie
----- Original Message -----
From: "Roger Cole" <rcole927@earthlink.net>
To: <rebel-builders@dcsol.com>
Sent: Friday, June 11, 2010 3:41 PM
Subject: Re: [rebel-builders] Static port

C-172s and other TC airplanes typically have two static ports: one on
the outside, and one inside the cabin with a valve to select one or
the other. The outside static port is used for normal operation. If
the outside port becomes fouled (by ice, for example) the inside port
can be selected. The Cessna 172 manual warns that the inside port is
not as accurate as the outside port.

Roger Cole
Murphy Elite #709
rcole927@earthlink.net



On Jun 10, 2010, at 10:37 AM, Gary Gustafson wrote:



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Roger Cole

[rebel-builders] Static port

Post by Roger Cole » Sun Feb 19, 2012 6:24 pm

Hi Charlie,
It may be quite a while before I am flying because I have not
installed the wings, engine, instruments seats, etc. Most of the
Cessnas that I have seen have the outside static port on the left
side just behind the firewall. Some of the ports have a small step
(about 1/16 inch high) that bisects the static port on the bezel. I
think the bezel can be rotated to tune the static port for greater
accuracy. This greater accuracy probably applies only to level flight.
-----Roger
On Jun 11, 2010, at 4:19 PM, Charlie Eubanks wrote:
Thanks Roger
I will be eager to hear what you find. I think Eric Fogel has a
similar
location on his Elite. I wonder how well his works?
Charlie
----- Original Message -----
From: "Roger Cole" <rcole927@earthlink.net>
To: <rebel-builders@dcsol.com>
Sent: Friday, June 11, 2010 3:41 PM
Subject: Re: [rebel-builders] Static port

C-172s and other TC airplanes typically have two static ports: one on
the outside, and one inside the cabin with a valve to select one or
the other. The outside static port is used for normal operation. If
the outside port becomes fouled (by ice, for example) the inside port
can be selected. The Cessna 172 manual warns that the inside port is
not as accurate as the outside port.

Roger Cole
Murphy Elite #709
rcole927@earthlink.net



On Jun 10, 2010, at 10:37 AM, Gary Gustafson wrote:
I have vented my static pick up to inside the cabin and it
reads wrong. I have vents for cooling air into the cockpit.
When I open the vents I read 400 to 500 feet lower than
with the vents closed. I am not sure whether the cockpit is
a bit pressurized, either negatively or positively.
As a result, I have purchased a static port and will be
installing it soon about 1/3 of the way back on the tail
cone. Will try and remember to send the results.


-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On
Behalf Of
Charlie Eubanks
Sent: Monday, June 07, 2010 6:24 PM
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Static port

Hello All

I have read everything in the archives about the location of the
static port

on the Rebel. The only thing everybody seams to agree on is to
vent it
inside the cabin. I am not to sure how well that would go over with
the
people who will do the initial and subsequent bi-annual inspection
for my
mode "C" transponder? What if I plumbed all the flight instruments
and the
encoder together and ran the static line outside and a couple of
feet up in
to the left side lift strut with a vented plug in the end? I know
of a
couple aircraft that do just that. Would that make a difference?
Anybody
tried that?

Charlie E. 802R






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