Today's Message Index:
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1. 03:33 PM - Copper Tubing For Replacement Air Line??? (PSalter@aol.com)
2. 03:55 PM - Re: Copper Tubing For Replacement Air Line??? (A. Dennis Savarese)
3. 06:06 PM - Re: Copper Tubing For Replacement Air Line??? (flir47)
4. 06:07 PM - Re: Copper Tubing For Replacement Air Line??? (flir47)
5. 06:50 PM - Yakk'in in Philly (shinden33)
6. 07:32 PM - Re: Re: Copper Tubing For Replacement Air Line??? (JOE HOWSE)
7. 08:28 PM - Need Schematic (Yak Pilot)
8. 10:08 PM - Re: Need Schematic (Jan Mevis)
Message 1
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| Subject: | Copper Tubing For Replacement Air Line??? |
I spent hours Friday searching for metric aluminum tubing to replace damaged
tubing connecting the main air valve, terminating at the aft bulkhead next
to the rear seat. I bought a roll of 1/4" copper tube and decided to resize
and use the metric fittings from my old air line. I tried a few different
methods of shrinking the tube with poor results. I decided to tie one end of the
copper to my trailer hitch and the other to a come-a-long attached to another
vehicle. I stretched the tube and checked the diameter with a micrometer
until I had the desired diameter. My shade tree engineering worked better than
I
hoped for. I replaced the damaged tubing with the newly sized copper used the
original fittings and went flying. I was told 1/4" tubing (un-stretched)
is good for 4000 psi. I am guessing if I lose half the strength in the
stretching process, I still have a safety factor of around 2. Are there any
reasons why I shouldn't use copper?
Phil
N700HS CJ6A
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| Subject: | Re: Copper Tubing For Replacement Air Line??? |
Copper will work just fine. I have found it difficult to find metric
aluminum tubing and have substituted copper tubing and not had any
problems whatsoever. Maybe someone else on the Yak list has a good
source for 6 mm and 8 mm aluminum tubing.
Dennis
----- Original Message -----
From: PSalter@aol.com
To: yak-list@matronics.com
Sent: Sunday, February 11, 2007 5:32 PM
Subject: Yak-List: Copper Tubing For Replacement Air Line???
I spent hours Friday searching for metric aluminum tubing to replace
damaged tubing connecting the main air valve, terminating at the aft
bulkhead next to the rear seat. I bought a roll of 1/4" copper tube and
decided to resize and use the metric fittings from my old air line. I
tried a few different methods of shrinking the tube with poor results. I
decided to tie one end of the copper to my trailer hitch and the other
to a come-a-long attached to another vehicle. I stretched the tube and
checked the diameter with a micrometer until I had the desired diameter.
My shade tree engineering worked better than I hoped for. I replaced the
damaged tubing with the newly sized copper used the original fittings
and went flying. I was told 1/4" tubing (un-stretched) is good for
4000 psi. I am guessing if I lose half the strength in the stretching
process, I still have a safety factor of around 2. Are there any reasons
why I shouldn't use copper?
Phil
N700HS CJ6A
Message 3
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| Subject: | Re: Copper Tubing For Replacement Air Line??? |
Phil
Copper has a propensity to work harden over time. By stretching it you have accelerated
this process. I would replace it as soon as possible. Vibration from
the airframe will be the cause of failure. Very industrious on your part though.
Good luck and safe flying!
--------
You built and fly an RV.......BIG DEAL!!!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=94380#94380
Message 4
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| Subject: | Re: Copper Tubing For Replacement Air Line??? |
Phil
Copper has a propensity to work harden over time. By stretching it you have accelerated
this process. I would replace it as soon as possible. Vibration from
the airframe will be the cause of failure. Very industrious on your part though.
Good luck and safe flying!
--------
You built and fly an RV.......BIG DEAL!!!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=94381#94381
Message 5
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| Subject: | Yakk'in in Philly |
Hi all,
I will be moving my '52 from So Cal to Philadelphia this summer. My wife
goT accepted to Vet school at the University of Penn! Does anyone have
recommendations on Yakk'in in the Philly area? I'd like to get my name on a
list for a hangar and get an idea of who the local mechanics are and where
they can be found. General area advice such as where to live or tips for
Vet School students (if anyone on list may have that kind of experience as
well) would helpful as well. Thanks in advance!
Scott Glaser
8252
Message 6
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| Subject: | Re: Copper Tubing For Replacement Air Line??? |
PHIL
Copper can be annealed (softened) by heating and quenching.
----- Original Message -----
From: "flir47" <me262pilot@comcast.net>
Sent: Sunday, February 11, 2007 6:06 PM
Subject: Yak-List: Re: Copper Tubing For Replacement Air Line???
>
> Phil
>
> Copper has a propensity to work harden over time. By stretching it you
> have accelerated this process. I would replace it as soon as possible.
> Vibration from the airframe will be the cause of failure. Very industrious
> on your part though.
>
> Good luck and safe flying!
>
> --------
> You built and fly an RV.......BIG DEAL!!!!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=94381#94381
>
>
>
Message 7
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I wonder if anyone on the list saved that YAK-52 electrical schematic that was
floating around some months back? My YAK-50 has some electrical problems (again)
that are turning out to be less than fun.
I found some wires that were shorting out when the Voltage Regulator moved in
it's shock mount.... All YAK owners note... this is apparently very common and
we all should pop the regulator out of it's month and check for wife chaffing.
Mine were, fixed same. \
Also found various wires rubbing through to bare metal in the nose compartment
(50 only).
The generator is putting out 28 volts at rated RPM (I have not checked it under
load yet), but the Generator light is on constantly and I have no current flow
from the generator into the main bus.
There are some relays in there that operate with comparison of battery to Generator
voltages, and so forth, and I am hoping that the 50 is close enough to
the 52 in this regard to use their schematics. This is going to end up being
a contact by wire by contact by wire tracing job I am sure.
That said, I could sure use 52 electrical schematics if someone could be so kind.
Thanks for any and all efforts,
Mark Bitterlich
N50YK
p.s. I am tempted to just pull all that happy horse manure out of there and
just install a B&C, but $$$$$$.
Message 8
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I'm considering the B&C alternator too, since having also a lot of noise
(already did Dennis' plug conversion, which works great by the way. So this
radio noise does not come from the plug wires). The Voltage Regulator in my
YK50 does not work very well either. It seems that during the overhaul in
Russia in 2001 a lot of 52 wiring has been done in my plane (this implies a
bunch of cables that are only partly used).
Good luck Mark!
Jan Mevis
RA2005K
_____
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Yak Pilot
Sent: maandag 12 februari 2007 5:28
Subject: Yak-List: Need Schematic
I wonder if anyone on the list saved that YAK-52 electrical schematic that
was floating around some months back? My YAK-50 has some electrical
problems (again) that are turning out to be less than fun.
I found some wires that were shorting out when the Voltage Regulator moved
in it's shock mount.... All YAK owners note... this is apparently very
common and we all should pop the regulator out of it's month and check for
wife chaffing. Mine were, fixed same. \
Also found various wires rubbing through to bare metal in the nose
compartment (50 only).
The generator is putting out 28 volts at rated RPM (I have not checked it
under load yet), but the Generator light is on constantly and I have no
current flow from the generator into the main bus.
There are some relays in there that operate with comparison of battery to
Generator voltages, and so forth, and I am hoping that the 50 is close
enough to the 52 in this regard to use their schematics. This is going to
end up being a contact by wire by contact by wire tracing job I am sure.
That said, I could sure use 52 electrical schematics if someone could be so
kind.
Thanks for any and all efforts,
Mark Bitterlich
N50YK
p.s. I am tempted to just pull all that happy horse manure out of there and
just install a B&C, but $$$$$$.
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