Today's Message Index:
----------------------
1. 01:08 AM - Re: Air leak (Richard Goode)
2. 03:45 AM - Re: Air leak (Mark Pennington)
3. 06:22 AM - Re: Air leak (Greg Wrobel)
4. 07:00 AM - Re: Air leak (Jean-Philippe Martel)
5. 08:31 AM - Re: Air leak (LawnDart)
6. 02:38 PM - Re: Air leak (todd militarian)
Message 1
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A soap solution is the way to establish a leak, but of course you are not going
to hear anything you will simply see the bubbles! And indeed I would be fairly
sure that while they might be very high-tech ways of finding an air leak, I'm
sure they are not available for the kind of problems encountered on these Russian
aircraft!
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode@russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.
-----Original Message-----
From: owner-yak-list-server@matronics.com <owner-yak-list-server@matronics.com>
On Behalf Of Steven Johnson
Sent: 08 March 2022 20:12
Subject: Yak-List: Air leak
Does anyone have a suggestion on how to locate a slow leak on in the main air system
of a Yak 52? I replaced the pressure relief piston, and that decreased,
but did not eliminate my leak. Air will take a week to bleed down to being too
low to start my plane. Is there any type of instrument that can detect air escaping?
Ive tried using a soap solution with no success and I cant hear anything.
I would like to identify the source of the leak prior to tearing the whole
system apart.
Steve
N9900X
Sent from my iPad
Message 2
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I found every leak on my CJ using a leak detection fluid called. Snoop.
We used it in instrument sensing systems in the field to find leaks in
anything that had pressure in it.
I like it because when it dries it is gone. No soap residue.
It is on Amazon for about 10 bucks for 8 ounces. That will last you a very
long time.
But soap works to.=F0=9F=91=8D
Mark
N621CJ
On Wed, Mar 9, 2022 at 4:13 AM Richard Goode <richard.goode@russianaeros.co
m>
wrote:
> richard.goode@russianaeros.com>
>
> A soap solution is the way to establish a leak, but of course you are not
> going to hear anything =93 you will simply see the bubbles! And ind
eed I
> would be fairly sure that while they might be very high-tech ways of
> finding an air leak, I'm sure they are not available for the kind of
> problems encountered on these Russian aircraft!
>
>
> RICHARD GOODE AEROBATICS
> Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
> Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
> e-mail: richard.goode@russianaeros.com
> www.russianaeros.com
> WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
> In partnership with Aerometal Kft, Hungary.
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com <
> owner-yak-list-server@matronics.com> On Behalf Of Steven Johnson
> Sent: 08 March 2022 20:12
> To: yak-list@matronics.com
> Subject: Yak-List: Air leak
>
>
> Does anyone have a suggestion on how to locate a slow leak on in the main
> air system of a Yak 52? I replaced the pressure relief piston, and that
> decreased, but did not eliminate my leak. Air will take a week to bleed
> down to being too low to start my plane. Is there any type of instrument
> that can detect air escaping? I=99ve tried using a soap solution wi
th no
> success and I can=99t hear anything. I would like to identify the s
ource of
> the leak prior to tearing the whole system apart.
>
> Steve
> N9900X
> Sent from my iPad
>
>
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>
>
Message 3
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Steve,
Ah the world of air leaks. We all go thru this on a constant basis and
through the years we have all tried different methods. We have converted
metal lines to high tech flex lines, changed alves to swagelocks and the
list goes on. I have had a nick in a line that would open up at 50 atms
bleeding the system down to 20 atms over a day or two and seal back up!
I have invested in a high-end ultrasonic leak detector that can hear a fly
fart at 20 feet and yet, I am still running nunning down a leak in my
emergency air system! On the a CJ6 the emmergency air system is as simple
as it gets wihen it comes to the plumbing. I have converted all the lines
to flex line, removed the rear valve, replaced the front valve and of
course rebuilt the check valve. I have been told that a leak can develope
within the actual pressure gage that is impossible to detect so that is my
next step while my engine is being overhauled by Richard Goode.
I know none of what I just said sheds any light on your dilemma but if you
own a YAK or CJ you just step back on occasions and when you do find the
leak, take a deep breath and like Captain Ahab would yell at Moby Dick....
"Thar she blows.
Greg Clouddog Wrobel
On Tue, Mar 8, 2022, 14:16 Steven Johnson <sajdds@comcast.net> wrote:
>
> Does anyone have a suggestion on how to locate a slow leak on in the main
> air system of a Yak 52? I replaced the pressure relief piston, and that
> decreased, but did not eliminate my leak. Air will take a week to bleed
> down to being too low to start my plane. Is there any type of instrument
> that can detect air escaping? I=99ve tried using a soap solution wi
th no
> success and I can=99t hear anything. I would like to identify the s
ource of
> the leak prior to tearing the whole system apart.
>
> Steve
> N9900X
> Sent from my iPad
>
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===========
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>
>
Message 4
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=F0=9F=91=8D=F0=9F=98=82
Le mer. 9 mars 2022, 15:27, Greg Wrobel <clouddog22@gmail.com> a =C3=A9crit
:
> Steve,
>
> Ah the world of air leaks. We all go thru this on a constant basis and
> through the years we have all tried different methods. We have converted
> metal lines to high tech flex lines, changed alves to swagelocks and the
> list goes on. I have had a nick in a line that would open up at 50 atms
> bleeding the system down to 20 atms over a day or two and seal back up!
>
> I have invested in a high-end ultrasonic leak detector that can hear a fl
y
> fart at 20 feet and yet, I am still running nunning down a leak in my
> emergency air system! On the a CJ6 the emmergency air system is as simpl
e
> as it gets wihen it comes to the plumbing. I have converted all the lines
> to flex line, removed the rear valve, replaced the front valve and of
> course rebuilt the check valve. I have been told that a leak can develope
> within the actual pressure gage that is impossible to detect so that is m
y
> next step while my engine is being overhauled by Richard Goode.
>
> I know none of what I just said sheds any light on your dilemma but if
> you own a YAK or CJ you just step back on occasions and when you do find
> the leak, take a deep breath and like Captain Ahab would yell at Moby
> Dick.... "Thar she blows.
>
> Greg Clouddog Wrobel
>
> On Tue, Mar 8, 2022, 14:16 Steven Johnson <sajdds@comcast.net> wrote:
>
>>
>> Does anyone have a suggestion on how to locate a slow leak on in the mai
n
>> air system of a Yak 52? I replaced the pressure relief piston, and that
>> decreased, but did not eliminate my leak. Air will take a week to bleed
>> down to being too low to start my plane. Is there any type of instrument
>> that can detect air escaping? I=99ve tried using a soap solution w
ith no
>> success and I can=99t hear anything. I would like to identify the
source of
>> the leak prior to tearing the whole system apart.
>>
>> Steve
>> N9900X
>> Sent from my iPad
>>
>> ==========
>> List" rel="noreferrer noreferrer" target="_blank">
>> http://www.matronics.com/Navigator?Yak-List
>> ==========
>> FORUMS -
>> eferrer noreferrer" target="_blank">http://forums.matronics.com
>> ==========
>> WIKI -
>> errer noreferrer" target="_blank">http://wiki.matronics.com
>> ==========
>> b Site -
>> -Matt Dralle, List Admin.
>> ="noreferrer noreferrer" target="_blank">
>> https://matronics.com/contribution
>> ==========
>>
>>
>>
>>
Message 5
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I would also add - obtain and study the air system schematic. You should be able
to narrow down the possible leak points, thus a good starting point for the
search.
i.e. in this case, with main valve closed, but still having a leak-down, it points
to one check-valve on the outside firewall in the "tee" where the relief valve
is located. That valve, if not closing, will allow air to leak out the external
fill port.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=506281#506281
Message 6
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Sir, I have heard of a device that is an amplified microphone it looks
something like a stethoscope. Or a handheld Doppler that vascular surgeons
use. I believe the technique is to slowly move the transducer over the
entire air system and when you get to the micro leak that is vexing you,
you will hear the air escaping.
On Tue, Mar 8, 2022 at 6:44 PM Anthony Savarese <dsavarese0812@bellsouth.ne
t>
wrote:
> dsavarese0812@bellsouth.net>
>
> Have you sprayed the soapy water on the external air fill port hole? If
> you have a Schrader valve installed on the external air fill port and the
re
> is a valve core in the Schrader valve, remove the valve core permanently
> because the external air fill port is protected by a check valve.
>
> FWIW, most Schrader valve cores are like the ones we find in tire tubes
> and valve stems on our automobiles are only good to about 150 PSI.
> Needless to say, the pneumatic system pressure on the Yak and CJ far exce
ed
> 150 PSI.
>
> Dennis
>
> Sent from my iPhone
>
> > On Mar 8, 2022, at 3:14 PM, Steven Johnson <sajdds@comcast.net> wrote:
> >
.net>
> >
> > Does anyone have a suggestion on how to locate a slow leak on in the
> main air system of a Yak 52? I replaced the pressure relief piston, and
> that decreased, but did not eliminate my leak. Air will take a week to
> bleed down to being too low to start my plane. Is there any type of
> instrument that can detect air escaping? I=99ve tried using a soap
solution
> with no success and I can=99t hear anything. I would like to identi
fy the
> source of the leak prior to tearing the whole system apart.
> >
> > Steve
> > N9900X
> > Sent from my iPad
> >
> >
> >
> >
>
>
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