Today's Message Index:
----------------------
1. 12:08 AM - Re: Re: Nitrogen to compressed air (Bill Geipel)
2. 07:19 AM - Re: Re: Nitrogen to compressed air (Jon Boede)
3. 12:38 PM - Re: Nitrogen to compressed air (Beegee5872)
4. 01:02 PM - Re: Re: Nitrogen to compressed air (Bill Culberson)
5. 01:55 PM - Re: Re: Nitrogen to compressed air (Jorgen Nielsen)
Message 1
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| Subject: | Re: Nitrogen to compressed air |
People have done it (2) that I know of. Never will be as dry as nitrogen.
I've used air for many years. No issues. But like I said, nitro is cheaper. All
the way around.
Bill
On Jul 9, 2012, at 11:01 PM, "Beegee5872" <Beegee5872@juno.com> wrote:
>
> Is there a possibility of installing an electric air pump with a drying filter
and automatic pressure regulator to maintain a constant air pressure to the
storage without refilling the nitrogen (or compressed air) tank on the ground?
>
> Bill G
>
> --------
> Bill
>
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> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=377836#377836
>
>
>
>
>
>
>
>
>
>
Message 2
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| Subject: | Re: Nitrogen to compressed air |
There was a popular mod in L-39s to put in a vibrating pump to generate pre
ssure to seal the canopies.
This went well until a couple of them burst into flames and filled the cock
pits with smoke.
Your actual mileage will vary... but the longer I do this stuff (going on 1
1 years now) the fewer "improvements" I'm inclined to make to the old Sovie
t Technology.
Jon
> Subject: L29-List: Re: Nitrogen to compressed air
> From: Beegee5872@juno.com
> Date: Mon=2C 9 Jul 2012 21:01:37 -0700
> To: l29-list@matronics.com
>
>
> Is there a possibility of installing an electric air pump with a drying f
ilter and automatic pressure regulator to maintain a constant air pressure
to the storage without refilling the nitrogen (or compressed air) tank on t
he ground?
>
> Bill G
>
> --------
> Bill
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=377836#377836
Message 3
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| Subject: | Re: Nitrogen to compressed air |
One would have thought that someone, some how, would design an on-board air pump
for the L29 to push out 1200 to 2200 psi and not burst into flames to operate
the front seal and braking system...
Though nitrogen is relatively cheap, to be tethered to that external hose at the
next airport is disheartening
--------
Bill
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=377910#377910
Message 4
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| Subject: | Re: Nitrogen to compressed air |
I once thought that way, and now have to agree with Jon. The best thing I have
done is to invest in a high frequency leak detector (Granger) and hunt down all
those annoying leaks. 99% of them were 1/8th turns of a wrench of a system fitting.
Now, my L-29 will hold 150 bars for 3-4 days and will stay above 50 bars
for more than three weeks. If your system doesn't leak much, you won't use
much. I have been using SCUBA air as that is the way I bought it with great luck.
I put my air charge line in the nose compartment for trips; most cities have
a SCUBA shop in case I somehow run out of air. I've been all over the south
east and to Oshkosh twice from southern Alabama and never had a problem. If you
convert to the high pressure Schrader valve and use Nitrogen, then any maintenance
facility will have you covered.
Bill Culberson
N39DE
-----Original Message-----
From: owner-l29-list-server@matronics.com [mailto:owner-l29-list-server@matronics.com] On Behalf Of Beegee5872
Sent: Tuesday, July 10, 2012 2:38 PM
Subject: L29-List: Re: Nitrogen to compressed air
One would have thought that someone, some how, would design an on-board air pump
for the L29 to push out 1200 to 2200 psi and not burst into flames to operate
the front seal and braking system...
Though nitrogen is relatively cheap, to be tethered to that external hose at the
next airport is disheartening
--------
Bill
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=377910#377910
Message 5
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| Subject: | Re: Nitrogen to compressed air |
I sit somewhere in the middle of the 2 opinions..
Have also modified mine with a valve so I can close the air, that way when I
get to the aircraft she has the same amount of air as I left it. Oxygen
tanks replaced and doing duty as 2nd system.
Onboard compressor has been done by an individual in Europe using an
electrically driven cornelius compressor in the nose (ex IFF) compartment. (
Hi Jean!)
Also been using scuba air for 7 years no problems.
I think it comes down to personal circumstance - i.e. what sort of airports
you fly to and therefore what sort of facilities you can expect.
Be careful that battery terminals are fully secured / covered in such a way
that they cannot be shorted by the metal part of the air charge hose.
Jorgen
-----Original Message-----
From: owner-l29-list-server@matronics.com
[mailto:owner-l29-list-server@matronics.com] On Behalf Of Bill Culberson
Sent: 10 July 2012 22:05
Subject: RE: L29-List: Re: Nitrogen to compressed air
--> <bculberson@staraviation.com>
I once thought that way, and now have to agree with Jon. The best thing I
have done is to invest in a high frequency leak detector (Granger) and hunt
down all those annoying leaks. 99% of them were 1/8th turns of a wrench of a
system fitting. Now, my L-29 will hold 150 bars for 3-4 days and will stay
above 50 bars for more than three weeks. If your system doesn't leak much,
you won't use much. I have been using SCUBA air as that is the way I bought
it with great luck. I put my air charge line in the nose compartment for
trips; most cities have a SCUBA shop in case I somehow run out of air. I've
been all over the south east and to Oshkosh twice from southern Alabama and
never had a problem. If you convert to the high pressure Schrader valve and
use Nitrogen, then any maintenance facility will have you covered.
Bill Culberson
N39DE
-----Original Message-----
From: owner-l29-list-server@matronics.com
[mailto:owner-l29-list-server@matronics.com] On Behalf Of Beegee5872
Sent: Tuesday, July 10, 2012 2:38 PM
Subject: L29-List: Re: Nitrogen to compressed air
One would have thought that someone, some how, would design an on-board air
pump for the L29 to push out 1200 to 2200 psi and not burst into flames to
operate the front seal and braking system...
Though nitrogen is relatively cheap, to be tethered to that external hose at
the next airport is disheartening
--------
Bill
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=377910#377910
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