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More Old Struff, Was: D Re: (Almost) perfect airplane batter

 
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BobsV35B(at)aol.com
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PostPosted: Wed Apr 12, 2006 12:35 am    Post subject: More Old Struff, Was: D Re: (Almost) perfect airplane batter Reply with quote

Good Morning Brian,

The manual loop was a snap, the tricky approaches were the DF approaches
using a fixed loop.

Almost all of the early TriPacers had a fixed loop in the fuselage and it
worked great. The loop was two or three wires wound around the inside of the
fuselage so it was a pretty good loop. It was fairly easy to get the null down
to an accurate one degree. I was a Piper dealer in those days and often taught
the use of the manual loop to TriPacer customers for use in VFR navigation
using commercial broadcast stations. I even had a fairly simple and
relatively fast method for solving the one-eighty ambiguity problem

Before the TriPacer came out, I had a Bonanza that was equipped with the
manual loop in the tail. That also worked reasonably well, but the null was
generally difficult to determine closer than a couple of degrees. The ones in the
Bonanza were driven by a flexible shaft and there was a lot of springiness
involved. They also tended to get bound up and had to be cleaned and
lubricated every couple of months. I generally ended up using it as a fixed loop
which worked reasonably well as long as the cross wind was not very strong. With
a strong crosswind, the effort was greater, but still doable. While it did
work well, I was happy when a light weight ADF finally became available!

On the other hand, the manual loops that were mounted either directly above
or immediately below the cockpit and hand operated directly were very easy to
use.

On our DC-3s, we had an electrically driven one that worked very well, but
it was as heavy as an old Bendix ADF. The same went for the Bendix Hand
Cranked units that were so ubiquitous in the early part of WWII.

Fact is, I still have one of those (the manual Bendix) in the pile of junk
in my hangar!

Do Not Archive

PS I have used the Loran A for over water navigation, but I had a navigator
that knew how to operate it and count the pips a lot better than I could.

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503


In a message dated 4/12/2006 2:23:19 A.M. Central Standard Time,
brian-yak(at)lloyd.com writes:

The only thing I haven't done flying IFR is flown depending on a manual
DF loop. Oh, and while I have played with an old LORAN-A receiver, I
have never used one to navigate.


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endspeed(at)yahoo.com
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PostPosted: Wed Apr 12, 2006 5:20 am    Post subject: More Old Struff, Was: D Re: (Almost) perfect airplane batter Reply with quote

This thread is entertaining. I must say, my dad, an
old time pilot who was flying in the thirties had a
real disdain for radios and radio navigation of any
kind. So you young whippersnappers top that. Isn't
it funny how we perceive our world depending on when
we came along.

--- BobsV35B(at)aol.com wrote:

Quote:

BobsV35B(at)aol.com



Good Morning Brian,

The manual loop was a snap, the tricky approaches
were the DF approaches
using a fixed loop.

Almost all of the early TriPacers had a fixed loop
in the fuselage and it
worked great. The loop was two or three wires wound
around the inside of the
fuselage so it was a pretty good loop. It was fairly
easy to get the null down
to an accurate one degree. I was a Piper dealer in
those days and often taught
the use of the manual loop to TriPacer customers
for use in VFR navigation
using commercial broadcast stations. I even had a
fairly simple and
relatively fast method for solving the one-eighty
ambiguity problem

Before the TriPacer came out, I had a Bonanza that
was equipped with the
manual loop in the tail. That also worked reasonably
well, but the null was
generally difficult to determine closer than a
couple of degrees. The ones in the
Bonanza were driven by a flexible shaft and there
was a lot of springiness
involved. They also tended to get bound up and had
to be cleaned and
lubricated every couple of months. I generally
ended up using it as a fixed loop
which worked reasonably well as long as the cross
wind was not very strong. With
a strong crosswind, the effort was greater, but
still doable. While it did
work well, I was happy when a light weight ADF
finally became available!

On the other hand, the manual loops that were
mounted either directly above
or immediately below the cockpit and hand operated
directly were very easy to
use.

On our DC-3s, we had an electrically driven one that
worked very well, but
it was as heavy as an old Bendix ADF. The same went
for the Bendix Hand
Cranked units that were so ubiquitous in the early
part of WWII.

Fact is, I still have one of those (the manual
Bendix) in the pile of junk
in my hangar!

Do Not Archive

PS I have used the Loran A for over water
navigation, but I had a navigator
that knew how to operate it and count the pips a lot
better than I could.

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503


In a message dated 4/12/2006 2:23:19 A.M. Central
Standard Time,
brian-yak(at)lloyd.com writes:

The only thing I haven't done flying IFR is flown
depending on a manual
DF loop. Oh, and while I have played with an old
LORAN-A receiver, I
have never used one to navigate.










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martorious(at)earthlink.n
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PostPosted: Wed Apr 12, 2006 7:27 am    Post subject: More Old Struff, Was: D Re: (Almost) perfect airplane batter Reply with quote

Up until a few decades ago, fire departments and firefighters shunned trucks
with a roof, believing it was unmanly. Today's trucks have large crew areas
with A/C, Heat and big cushy seats. I volunteered for 6 years on my
hometown's Fire Department, and I have to say that the A/C felt awful good
after working a traffic accident or house fire in mid August. I felt I
proved my worth on the fireground, I had nothing left to prove on the ride
back! That's what a few decades (and technology) does for us, it makes us
soft! But I for one won't give up my A/C! Lol

Marty Puckett

--


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