GPS altitude vs altimeter altitude

On Sun, 16 Apr 2006 14:37:53 -0500, Chris W wrote:

It is my understanding that even if a GPS is reading perfectly and your
standard altimeter is reading perfectly even on a standard day that the
2 values will not be the same

Mine generally read within 50-100 feet of one another. However, I
rarely fly above 3,500 feet. (Altimeter is 60 years old, assuming same
age as airplane.)


-- all the best, Dan Ford

email: usenet AT danford DOT net

Warbird's Forum: www.warbirdforum.com
Piper Cub Forum: www.pipercubforum.com
In Search of Lost Time: www.readingproust.com

Does your old Cub have a sensitive altimeter or just a
standard?



--
James H. Macklin
ATP,CFI,A&P

--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.
some support
http://www.usdoj.gov/olc/secondamendment2.htm
See http://www.fija.org/ more about your rights and duties.


"Cub Driver" usenet AT danford DOT net wrote in message
...
| On Sun, 16 Apr 2006 14:37:53 -0500, Chris W
wrote:
|
| It is my understanding that even if a GPS is reading
perfectly and your
| standard altimeter is reading perfectly even on a
standard day that the
| 2 values will not be the same
|
| Mine generally read within 50-100 feet of one another.
However, I
| rarely fly above 3,500 feet. (Altimeter is 60 years old,
assuming same
| age as airplane.)
|
|
| -- all the best, Dan Ford
|
| email: usenet AT danford DOT net
|
| Warbird's Forum: www.warbirdforum.com
| Piper Cub Forum: www.pipercubforum.com
| In Search of Lost Time: www.readingproust.com

On Mon, 17 Apr 2006 04:58:42 -0500, "Jim Macklin"
wrote:

Does your old Cub have a sensitive altimeter or just a
standard?

One of those that, when it feels like it, swings a hundred feet up and
down for ten or twenty minutes at a time. I think the best term for it
would be sub-standard.


-- all the best, Dan Ford

email: usenet AT danford DOT net

Warbird's Forum: www.warbirdforum.com
Piper Cub Forum: www.pipercubforum.com
In Search of Lost Time: www.readingproust.com

Cub Driver wrote:
On Mon, 17 Apr 2006 04:58:42 -0500, "Jim Macklin"
wrote:

Does your old Cub have a sensitive altimeter or just a
standard?

One of those that, when it feels like it, swings a hundred feet up and
down for ten or twenty minutes at a time. I think the best term for it
would be sub-standard.

Just tap on the face a bit.

that's what the engine does




"Stubby" wrote in message
. ..
| Cub Driver wrote:
| On Mon, 17 Apr 2006 04:58:42 -0500, "Jim Macklin"
| wrote:
|
| Does your old Cub have a sensitive altimeter or just a
| standard?
|
| One of those that, when it feels like it, swings a
hundred feet up and
| down for ten or twenty minutes at a time. I think the
best term for it
| would be sub-standard.
|
| Just tap on the face a bit.

On Tue, 18 Apr 2006 10:17:55 -0400, Stubby
wrote:

One of those that, when it feels like it, swings a hundred feet up and
down for ten or twenty minutes at a time. I think the best term for it
would be sub-standard.

Just tap on the face a bit.

I'd have to bring a broomstick!

(J-3s fly solo from the back seat.)



-- all the best, Dan Ford

email: usenet AT danford DOT net

Warbird's Forum: www.warbirdforum.com
Piper Cub Forum: www.pipercubforum.com
In Search of Lost Time: www.readingproust.com

sounds like it has water in the static line.



"Cub Driver" usenet AT danford DOT net wrote in message
...
| On Mon, 17 Apr 2006 04:58:42 -0500, "Jim Macklin"
| wrote:
|
| Does your old Cub have a sensitive altimeter or just a
| standard?
|
| One of those that, when it feels like it, swings a hundred
feet up and
| down for ten or twenty minutes at a time. I think the best
term for it
| would be sub-standard.
|
|
| -- all the best, Dan Ford
|
| email: usenet AT danford DOT net
|
| Warbird's Forum: www.warbirdforum.com
| Piper Cub Forum: www.pipercubforum.com
| In Search of Lost Time: www.readingproust.com