Cheroke 140 Static Port
Jerry Gormley
Anybody know where the static port is on a Cheroke 140?
I was told its on the back of the pitot tube but it looks
kinda small to me.
Hilton Goldstein
I'm going to assume that the 140 pitot/static system is the same as the
Archer's. On the left wing, you have a black thing which is what you're
talking about. This has a little hole in the front. This is the pitot
tube hole/inlet. There is a little hole almost directly behind it
pointing backwards - that is the static port. There is also a hole near
the back, but on the bottom. This is the drain hole. Hope that answers
your question.
Do you know where the alternate static port is, and where the 'switch'
for it is? One more thing, if you do change to the alternate static
port, what indicaton will you see on the gauges? Hint: If you're about
to say the ASI always goes up - you're wrong. :)
Hilton
--
Hilton Goldstein.............................hilton@sgi.com
650-933-5254 (phone).....................(fax) 650-390-6159
M/S 1L-945, 2011 N. Shoreline Blvd, Mountain View, CA 94043
http://reality.sgi.com/hilton
"I am a marvelous housekeeper. Every time I leave a man,
I keep his house." - Zsa Zsa Gabor
Bob Noel
> Anybody know where the static port is on a Cheroke 140?
> I was told its on the back of the pitot tube but it looks
> kinda small to me.
From paragraph 10-23 of the Piper Cherokee Service Manual
"...Static air system consists on a static port located on the
bottom of the pitot mast."
--
Bob
(I think people can figure out how to email me...)
(replace ihatessppaamm with my name (rnoel) and mediaone with hw1)
Ron Natalie
Hilton Goldstein wrote:
>
> Do you know where the alternate static port is, and where the 'switch'
> for it is?
One year Margy and I were bound to Oshkosh (less than a month after
Margy got her private) and she was flying and the pitot tube plugged
up right as she rotated. We flew over to the shop and had it
cleared out. Recounting this story to another pilot at the bar
that evening, he said that he had an alternate pitot inside the
cockpit that he could open. Margy kicked me as she saw I was
getting ready to ask the guy how fast the air was moving inside
his cockpit.
Rod Machado says given a choice of an instrument to smash in
an emergency a student will usually pick the hobbs meter.
-Ron
KJKreuzer
>Anybody know where the static port is on a Cheroke 140?
>I was told its on the back of the pitot tube but it looks
>kinda small to me.
That's it. There is also an alternate source in the cabin on most models.
Ken Kreuzer
p...@globalnet.co.uk
Yep..thats where it is on the models I fly as well. Not very re-assuring, I
much prefer the big ones stuck on each side of the rear fuselages of most
light singles. But then the bugs can creep into the big ones and block the
system, which is one advantage to the pinhole jobs on PA28's.
--
Pete
BQH, London, UK
p...@globalnet.co.uk
Jerry Gormley <jgor...@iai.com> wrote in article
<342826...@iai.com>...
Hilton Goldstein
p...@globalnet.co.uk wrote:
>
> Yep..thats where it is on the models I fly as well. Not very re-assuring, I
> much prefer the big ones stuck on each side of the rear fuselages of most
> light singles.
Why? Have you considered the errors associated with slipping?
Steve Pick
Hilton Goldstein <hil...@sgi.com> wrote in article
<342963...@sgi.com>...
> p...@globalnet.co.uk wrote:
> >
> > Yep..thats where it is on the models I fly as well. Not very
re-assuring, I
> > much prefer the big ones stuck on each side of the rear fuselages of
most
> > light singles.
>
> Why? Have you considered the errors associated with slipping?
>
> Hilton
>
Not sure I understand Hilton. Are not the errors associated with slipping
the very reason for putting one port each side of the fuselage?
Steve
Hilton Goldstein
My mistake - sorry. If I remember correctly, the thread started out as
172 vs Cherokee style static ports, so I missed the "double barrel
static port" thing.
BTW: How is the pressure from those two static ports used?
Steve Pick
Hilton Goldstein <hil...@sgi.com> wrote in article
<342B42...@sgi.com>...
> Steve Pick wrote:
> >
> > Hilton Goldstein <hil...@sgi.com> wrote in article
> > <342963...@sgi.com>...
> > > p...@globalnet.co.uk wrote:
> > > >
> > > > Yep..thats where it is on the models I fly as well. Not very
> > re-assuring, I
> > > > much prefer the big ones stuck on each side of the rear fuselages
of
> > most
> > > > light singles.
> > >
> > > Why? Have you considered the errors associated with slipping?
> > >
> > > Hilton
> > >
> >
> > Not sure I understand Hilton. Are not the errors associated with
slipping
> > the very reason for putting one port each side of the fuselage?
>
> My mistake - sorry. If I remember correctly, the thread started out as
> 172 vs Cherokee style static ports, so I missed the "double barrel
> static port" thing.
>
> BTW: How is the pressure from those two static ports used?
>
> Hilton
>
It was a long time ago but if I recall they are simply plumbed together
inside the aircraft. I guess it provides an approximation of the ambient
pressure.
I say it's been a while because I've had a Cherokee, with the static on the
bottom of the pitot head, for about ten years now. Seems to work real well.
Steve.
Ron Natalie
Steve Pick wrote:
> > BTW: How is the pressure from those two static ports used?
> >
> > Hilton
> >
>
> It was a long time ago but if I recall they are simply plumbed together
> inside the aircraft. I guess it provides an approximation of the ambient
> pressure.
It's exactly that. Just T'd together. There's no reason not to, there
just a vent.
I've flown a plain with a plugged static system. It was very amusing.
We had fun screwing around with the alternate static port during
the flight and shut it on approach so that when we rolled up to
the mechanics we could point at the airspeed indicator and told
them to fix it.
Since it's not a big problem I stood around with my thumb on the
exterior ports while the mechanic crawled down the tail cone to
try to figure out where the obstruction was.
Rod Clark
In article <342963...@sgi.com>, Hilton Goldstein <hil...@sgi.com> wrote:
>p...@globalnet.co.uk wrote:
>>
>> Yep..thats where it is on the models I fly as well. Not very re-assuring, I
>> much prefer the big ones stuck on each side of the rear fuselages of most
>> light singles.
>
>Why? Have you considered the errors associated with slipping?
>
>Hilton
>
Shouldn't be too much of a problem if you have one on each side.
Rod Clark
Warranwood, VIC, Australia
rcl...@aardvark.apana.org.au
Beagle A.109 Airedale VH-DCS
Member: Antique Aeroplane Association of Australia
AOPA
Australian Warbirds