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Jetj01(at)aol.com
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 Posted: Mon Oct 03, 2011 10:24 am Post subject: S-L-O_W Air leak |
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Need expert opinion- on my YAK 50 it has suddenly developed
A very slow air leak that depletes both the main and
Emergency air bottles over several days. I have never had
An air leak before. When I fly it it immediately recharges
Full. In 4 days it is down to 3 'potatoes' and I shut it down at 5.
Any quick opinions of where the leak might be?
Tailwinds
Jj
Sent from my iPhone
On Oct 3, 2011, at 11:37 AM, "Roger Kemp M.D." <viperdoc(at)mindspring.com (viperdoc(at)mindspring.com)> wrote:
[quote]
Pappy,
The Contact name at Aerostar is Christian Dragori. I have lost his #’s though.
Doc
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of cjpilot710(at)aol.com (cjpilot710(at)aol.com)
Sent: Monday, October 03, 2011 6:54 AM
To: yak-list(at)matronics.com
Subject: Re: Re: Yak 18T prop
Hope they don't put the "V" seals in backwards!! 
Pappy
--
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viperdoc(at)mindspring.co
Guest
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| Posted: Mon Oct 03, 2011 10:59 am Post subject: S-L-O_W Air leak |
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Jj,
Sorry to say it bud but…you and a soap suds squirt bottle are going to become friends. How long has it been since you replaced the braided airline to your brakes? If it is leaking down with your air shut off valve closed I would start by looking at the fitting connecting to the air shut off valve and that valve itself. Next the lines coming into it from the bottles. Worst yet a pin hole in one of the bottles. Then it is a straight shot back to the check valves on the fire wall. That includes the pop off valve.
Someone was talking about the ultrasonic leak detectors they bought on Ebay. That may become your playtime friend also if you get tired of soapy water that is.
Doc
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Jj
Sent: Monday, October 03, 2011 1:19 PM
To: yak-list(at)matronics.com
Subject: S-L-O_W Air leak
Need expert opinion- on my YAK 50 it has suddenly developed
A very slow air leak that depletes both the main and
Emergency air bottles over several days. I have never had
An air leak before. When I fly it it immediately recharges
Full. In 4 days it is down to 3 'potatoes' and I shut it down at 5.
Any quick opinions of where the leak might be?
Tailwinds
Jj
Sent from my iPhone
On Oct 3, 2011, at 11:37 AM, "Roger Kemp M.D." <viperdoc(at)mindspring.com (viperdoc(at)mindspring.com)> wrote:
[quote]
Pappy,
The Contact name at Aerostar is Christian Dragori. I have lost his #’s though.
Doc
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of cjpilot710(at)aol.com (cjpilot710(at)aol.com)
Sent: Monday, October 03, 2011 6:54 AM
To: yak-list(at)matronics.com
Subject: Re: Re: Yak 18T prop
Hope they don't put the "V" seals in backwards!!
Pappy
--
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dsavarese0812(at)bellsout
Guest
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| Posted: Mon Oct 03, 2011 1:12 pm Post subject: S-L-O_W Air leak |
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Check the external air fill port with soapy water. If you have bubbles,
you can start tracing where and why it is leaking. Secondly, with the
snot bottle closed, see if you can put a small cup of water over the
drain tube. Bubbles there would indicate the pop off valve is not
seating AND you have a leaking check valve further up the line. At
least this is two starting points.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (cell)
Skype: Yakguy1
www.yak-52.com
On 10/3/2011 1:55 PM, Roger Kemp M.D. wrote:
[quote]
Jj,
Sorry to say it bud but…you and a soap suds squirt bottle are going to
become friends. How long has it been since you replaced the braided
airline to your brakes? If it is leaking down with your air shut off
valve closed I would start by looking at the fitting connecting to
the air shut off valve and that valve itself. Next the lines coming
into it from the bottles. Worst yet a pin hole in one of the bottles.
Then it is a straight shot back to the check valves on the fire wall.
That includes the pop off valve.
Someone was talking about the ultrasonic leak detectors they bought on
Ebay. That may become your playtime friend also if you get tired of
soapy water that is.
Doc
*From:*owner-yak-list-server(at)matronics.com
[mailto:owner-yak-list-server(at)matronics.com] *On Behalf Of *Jj
*Sent:* Monday, October 03, 2011 1:19 PM
*To:* yak-list(at)matronics.com
*Subject:* S-L-O_W Air leak
Need expert opinion- on my YAK 50 it has suddenly developed
A very slow air leak that depletes both the main and
Emergency air bottles over several days. I have never had
An air leak before. When I fly it it immediately recharges
Full. In 4 days it is down to 3 'potatoes' and I shut it down at 5.
Any quick opinions of where the leak might be?
Tailwinds
Jj
Sent from my iPhone
On Oct 3, 2011, at 11:37 AM, "Roger Kemp M.D."
<viperdoc(at)mindspring.com <mailto:viperdoc(at)mindspring.com>> wrote:
Pappy,
The Contact name at Aerostar is Christian Dragori. I have lost his
#’s though.
Doc
*From:*owner-yak-list-server(at)matronics.com
<mailto:owner-yak-list-server(at)matronics.com>
[mailto:owner-yak-list-server(at)matronics.com] *On Behalf Of
*cjpilot710(at)aol.com <mailto:cjpilot710(at)aol.com>
*Sent:* Monday, October 03, 2011 6:54 AM
*To:* yak-list(at)matronics.com
*Subject:* Re: Re: Yak 18T prop
Hope they don't put the "V" seals in backwards!!
Pappy
--
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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czech6(at)mesanetworks.ne
Guest
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| Posted: Mon Oct 03, 2011 6:33 pm Post subject: S-L-O_W Air leak |
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The emergency gear extend valve started to leak. As soon as I fixed that the main air shut off
Valve leaked. Pull out the valve, NAPA "O" ring and a little silicone. Perfect
Bill
On Oct 3, 2011, at 12:19 PM, Jj <Jetj01(at)aol.com (Jetj01(at)aol.com)> wrote:
[quote]Need expert opinion- on my YAK 50 it has suddenly developed
A very slow air leak that depletes both the main and
Emergency air bottles over several days. I have never had
An air leak before. When I fly it it immediately recharges
Full. In 4 days it is down to 3 'potatoes' and I shut it down at 5.
Any quick opinions of where the leak might be?
Tailwinds
Jj
Sent from my iPhone
On Oct 3, 2011, at 11:37 AM, "Roger Kemp M.D." <[url=mailto:viperdoc(at)mindspring.com]viperdoc(at)mindspring.com (viperdoc(at)mindspring.com)[/url]> wrote:
[quote]
Pappy,
The Contact name at Aerostar is Christian Dragori. I have lost his #’s though.
Doc
From: [url=mailto:owner-yak-list-server(at)matronics.com]owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)[/url] [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of [url=mailto:cjpilot710(at)aol.com]cjpilot710(at)aol.com (cjpilot710(at)aol.com)[/url]
Sent: Monday, October 03, 2011 6:54 AM
To: [url=mailto:yak-list(at)matronics.com]yak-list(at)matronics.com (yak-list(at)matronics.com)[/url]
Subject: Re: Re: Yak 18T prop
Hope they don't put the "V" seals in backwards!!
Pappy
--
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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barryhancock
Joined: 09 Oct 2008
Posts: 285
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| Posted: Wed Oct 05, 2011 8:19 pm Post subject: Re: S-L-O_W Air leak |
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Could also be the gauge itself.....
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Barry Hancock
Worldwide Warbirds, Inc.
www.worldwidewarbirds.com |
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yakplt(at)yahoo.com
Guest
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| Posted: Thu Oct 06, 2011 12:02 pm Post subject: S-L-O_W Air leak |
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Just want to second what Dennis has said here, since I recently had exactly the same problem.
On the YAK-50 ... not the YAK-52, but the 50, there is only one thing common that will drain both main and emergency bottles together, and that is the check valves. They are sneaky. You can have two of them go bad and never even know it. When you then get the THIRD one go bad, it will do exactly what you just said. It is highly likely that this is your problem.
Dennis gave you one method, I will give you another. Open your snot valve. Close it. Wait a few hours and come back and open it again. If any air comes out at all, you have bad check valves. There are four of them. Two inputs and two outputs. Compressor in, external air in, main out and emergency out. Four. There is an air filter in the middle. This filter has like.... well, it is like "steel wool" inside of it. When that crap comes apart, (and it does) it exits out to both the emergency bottle output check valve and the main air bottle check valve and makes them LEAK.
If you have both "out" check valves fail, and your pressure relief valve is in good shape, you will never even realize it has happened.
If you have both "out" check valves that ARE failed, you can get air leaking out of:
1. The pressure relief valve,
2. Through a THIRD check valve to the engine compressor, and before you say how unlikely THAT is, that is EXACTLY what happened to me!
3. Through (another) third check valve and then out the external fill port.
So you need to look for air coming out the snot valve (my way or Dennis's way), out the external fill port, or out the pressure relief valve. Any one of three will tell you that both main and emergency output check valve are leaking. Both of them.
Now for the good news. Cliff Coy can rebuild these for you and darn right this is a plug for his good service! He deserves it and so does George .
Good Luck,
Mark
p.s.
Clifford Coy
Border Air Ltd.
629 Airport Rd.
Swanton, VT 05488
802-868-2822 TEL
802-868-4465 FAX
Skype: Cliff.Coy
George Coy
CAS Ltd.
714 Airport Rd.
Swanton VT 05488
802-868-5633 off
802-363-5782 cell
802-868-4465 Fax
george.coy(at)gmail.com (george.coy(at)gmail.com)
From: A. Dennis Savarese <dsavarese0812(at)bellsouth.net>
To: yak-list(at)matronics.com
Sent: Monday, October 3, 2011 5:10 PM
Subject: Re: Yak-List: S-L-O_W Air leak
--> Yak-List message posted by: "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)>
Check the external air fill port with soapy water. If you have bubbles, you can start tracing where and why it is leaking. Secondly, with the snot bottle closed, see if you can put a small cup of water over the drain tube. Bubbles there would indicate the pop off valve is not seating AND you have a leaking check valve further up the line. At least this is two starting points.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (cell)
Skype: Yakguy1
www.yak-52.com
On 10/3/2011 1:55 PM, Roger Kemp M.D. wrote:
| Quote: |
Jj,
Sorry to say it bud but…you and a soap suds squirt bottle are going to become friends. How long has it been since you replaced the braided airline to your brakes? If it is leaking down with your air shut off valve closed I would start by looking at the fitting connecting to the air shut off valve and that valve itself. Next the lines coming into it from the bottles. Worst yet a pin hole in one of the bottles. Then it is a straight shot back to the check valves on the fire wall. That includes the pop off valve.
Someone was talking about the ultrasonic leak detectors they bought on Ebay. That may become your playtime friend also if you get tired of soapy water that is.
Doc
*From:*owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] *On Behalf Of *Jj
*Sent:* Monday, October 03, 2011 1:19 PM
*To:* yak-list(at)matronics.com (yak-list(at)matronics.com)
*Subject:* S-L-O_W Air leak
Need expert opinion- on my YAK 50 it has suddenly developed
A very slow air leak that depletes both the main and
Emergency air bottles over several days. I have never had
An air leak before. When I fly it it immediately recharges
Full. In 4 days it is down to 3 'potatoes' and I shut it down at 5.
Any quick opinions of where the leak might be?
Tailwinds
Jj
|
[quote][b]
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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