 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
McFly
Joined: 21 May 2012
Posts: 101
Location: Scottsdale, AZ
|
 Posted: Sat Apr 19, 2014 6:13 pm Post subject: M-14P Air pump |
 |
|
How much HP difference is there between a "loaded" and "unloaded" air compressor on the M-14P?
I have heard of guys putting in a manual "bypass" dumping air from the compressor overboard to "unload" the compressor for more HP.
I would think this is both
A) minimal increase in HP (1 - 2 HP?)
And
B) once your air is "topped off" doesn't the pressure relief valve or "pop off" valve open and perform the exact same function?
Todd McCutchanT-34A & Yak-50
Cell: (260) 402-1740
E-mail: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
www.fastaircraft.com
On Apr 19, 2014, at 6:24 PM, "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:
[quote]The pop off (pressure RELIEF) valve is controlled by spring tension. The tighter you make the "top hat" (turn it clockwise), the higher the pressure goes. When the pressure reaches the preset spring pressure, the valve opens. The hiss is the pressure relief which stops when the pop off valve closes. This is perfectly normal. It's just like the pressure relief valve on a shop compressor. If the pressure in the compressor exceeds the pressure relief valve preset pressure, the valve opens and "dumps" the excess pressure.
Dennis
From: Jim Shanks <shankeroid(at)verizon.net (shankeroid(at)verizon.net)>
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Sent: Saturday, April 19, 2014 10:21 AM
Subject: Hissing Pop-Off Valve
When servicing the air system on our stock CJ, the pop-off valve begins “hissing” at around 32 ATM and “pops-off” at around 38 ATM (not allowing system to be pressurized any higher.) After popping off and servicing discontinued, hissing will continue (slowly diminishing) until pressure settles at around 32 ATM. Although probably plenty for a few start attempts, I want to fix the problem and have the full 50 ATM available.
I know the valve is adjustable, but is the hissing a separate problem that needs to be addressed? Also, what specifically is causing the valve to hiss?
Thanks.
Jim Shanks
shankeroid(at)verizon.net (shankeroid(at)verizon.net)
| Quote: | http://ww"nofollow" target="_blank" href="http://forums.matronics.com/">http://f==========
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
ist"">http://www.matronics.com/Navigator?Yak-List
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
//forums.matronics.com
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
ot;">http://www.matronics.com/contribution
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
|
[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 |
|
_________________
Todd McCutchan
Fast Aircraft
T-34A - N134FA
KDVT Hangar 33-13
Cell - 260.402.1740
Email: todd@fastaircraft.com
Skype: tmccutchan
Web: www.fastaircraft.com & www.flyams.com |
|
| Back to top |
|
 |
richard.goode(at)russiana
Guest
|
| Posted: Sun Apr 20, 2014 12:28 am Post subject: M-14P Air pump |
|
|
Obviously the power required for the compressor depends on the pressure. But if it is at high pressure – that is normal operating pressure, when the pressure-release valve blows off and then a little later the compressor starts working again that is all at high pressure, when it uses about 2.5 hp, so not really noticeable.
But the opening of the release valve does not allow the compressor to work off load – it has released some pressure, which makes the compressor then work again to build up the pressure in a continuing cycle!
But the real advantage of opening a "dump-valve" is that the compressor then runs off-load for most of the time. In our experience the compressors are a weak part of these engines, and very often do not reach the engine TBO, but if running off-load, they will last indefinitely.
There is also a side advantage that if the compressor is not continuously working, it's not then putting some atmospheric water into the air system. Of course this shouldn't happen, but many people don't release the water drain sufficiently often, and so it goes quite a long way to prevent this problem.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel:Â +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Todd McCutchan
Sent: 20 April 2014 02:52
To: yak-list(at)matronics.com
Subject: M-14P Air pump
How much HP difference is there between a "loaded" and "unloaded" air compressor on the M-14P?
I have heard of guys putting in a manual "bypass" dumping air from the compressor overboard to "unload" the compressor for more HP.
I would think this is both
A) minimal increase in HP (1 - 2 HP?)
And
B) once your air is "topped off" doesn't the pressure relief valve or "pop off" valve open and perform the exact same function?
Todd McCutchan
T-34A & Yak-50
Cell: (260) 402-1740
E-mail: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
www.fastaircraft.com
On Apr 19, 2014, at 6:24 PM, "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:
| Quote: |
The pop off (pressure RELIEF) valve is controlled by spring tension. The tighter you make the "top hat" (turn it clockwise), the higher the pressure goes. When the pressure reaches the preset spring pressure, the valve opens. The hiss is the pressure relief which stops when the pop off valve closes. This is perfectly normal. It's just like the pressure relief valve on a shop compressor. If the pressure in the compressor exceeds the pressure relief valve preset pressure, the valve opens and "dumps" the excess pressure.
Dennis
From: Jim Shanks <shankeroid(at)verizon.net (shankeroid(at)verizon.net)>
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Sent: Saturday, April 19, 2014 10:21 AM
Subject: Hissing Pop-Off Valve
When servicing the air system on our stock CJ, the pop-off valve begins “hissing” at around 32 ATM and “pops-off” at around 38 ATM (not allowing system to be pressurized any higher.) After popping off and servicing discontinued, hissing will continue (slowly diminishing) until pressure settles at around 32 ATM. Although probably plenty for a few start attempts, I want to fix the problem and have the full 50 ATM available.
I know the valve is adjustable, but is the hissing a separate problem that needs to be addressed? Also, what specifically is causing the valve to hiss?
Thanks.
Jim Shanks
shankeroid(at)verizon.net (shankeroid(at)verizon.net)
| Quote: | | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dist"">http://www.matronics.com/Navigator?Yak-ListMailScanner has detected a possible fraud attempt from "f==========" claiming to be D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D//forums.matronics.comMailScanner has detected a possible fraud attempt from "f==========" claiming to be D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dot;">http://www.matronics.com/contributionMailScanner has detected a possible fraud attempt from "f==========" claiming to be |
01
|
234567890123456789
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
[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 |
|
|
|
| Back to top |
|
|
McFly
Joined: 21 May 2012
Posts: 101
Location: Scottsdale, AZ
|
| Posted: Sun Apr 20, 2014 6:45 am Post subject: M-14P Air pump |
|
|
I see. Thanks for the education Richard!
What is the best way to dump then? Just put a line to the snot valve from the cockpit?
Todd McCutchan
T-34A & Yak-50
Cell: (260) 402-1740
E-mail: todd(at)fastaircraft.com
www.fastaircraft.com
[quote] On Apr 20, 2014, at 1:27 AM, "Richard Goode" <richard.goode(at)russianaeros.com> wrote:
Obviously the power required for the compressor depends on the pressure. But if it is at high pressure – that is normal operating pressure, when the pressure-release valve blows off and then a little later the compressor starts working again that is all at high pressure, when it uses about 2.5 hp, so not really noticeable.
But the opening of the release valve does not allow the compressor to work off load – it has released some pressure, which makes the compressor then work again to build up the pressure in a continuing cycle!
But the real advantage of opening a "dump-valve" is that the compressor then runs off-load for most of the time. In our experience the compressors are a weak part of these engines, and very often do not reach the engine TBO, but if running off-load, they will last indefinitely.
There is also a side advantage that if the compressor is not continuously working, it's not then putting some atmospheric water into the air system. Of course this shouldn't happen, but many people don't release the water drain sufficiently often, and so it goes quite a long way to prevent this problem
| | - 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 |
|
_________________
Todd McCutchan
Fast Aircraft
T-34A - N134FA
KDVT Hangar 33-13
Cell - 260.402.1740
Email: todd@fastaircraft.com
Skype: tmccutchan
Web: www.fastaircraft.com & www.flyams.com |
|
| Back to top |
|
|
richard.goode(at)russiana
Guest
|
| Posted: Sun Apr 20, 2014 7:47 am Post subject: M-14P Air pump |
|
|
There are different solutions. Some have an electric (solenoid) valve; you can have an actuating cable operating the tap. However, for a simple aerobatic aircraft I prefer to bring the valve into the cockpit into an accessible position – but typically underneath the pilot’s leg – so it is totally positive; you know when it is on and off and no possibility of electrical or control problems.
So you open it once the pressure has built up after starting, and then it is clearly important to shut the valve before landing to ensure you have a pressure for undercarriage; brakes etc, and of course that you will have built up pressure for the next start.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel:Â +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Todd McCutchan
Sent: 20 April 2014 15:24
To: yak-list(at)matronics.com
Subject: Re: M-14P Air pump
I see. Thanks for the education Richard!
What is the best way to dump then? Just put a line to the snot valve from the cockpit?
Todd McCutchan
T-34A & Yak-50
Cell: (260) 402-1740
E-mail: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
www.fastaircraft.com
On Apr 20, 2014, at 1:27 AM, "Richard Goode" <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
| Quote: |
Obviously the power required for the compressor depends on the pressure. But if it is at high pressure – that is normal operating pressure, when the pressure-release valve blows off and then a little later the compressor starts working again that is all at high pressure, when it uses about 2.5 hp, so not really noticeable.
But the opening of the release valve does not allow the compressor to work off load – it has released some pressure, which makes the compressor then work again to build up the pressure in a continuing cycle!
But the real advantage of opening a "dump-valve" is that the compressor then runs off-load for most of the time. In our experience the compressors are a weak part of these engines, and very often do not reach the engine TBO, but if running off-load, they will last indefinitely.
There is also a side advantage that if the compressor is not continuously working, it's not then putting some atmospheric water into the air system. Of course this shouldn't happen, but many people don't release the water drain sufficiently often, and so it goes quite a long way to prevent this problem.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
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 Todd McCutchan
Sent: 20 April 2014 02:52
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: M-14P Air pump
How much HP difference is there between a "loaded" and "unloaded" air compressor on the M-14P?
I have heard of guys putting in a manual "bypass" dumping air from the compressor overboard to "unload" the compressor for more HP.
I would think this is both
A) minimal increase in HP (1 - 2 HP?)
And
B) once your air is "topped off" doesn't the pressure relief valve or "pop off" valve open and perform the exact same function?
Todd McCutchan
T-34A & Yak-50
Cell: (260) 402-1740
E-mail: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
www.fastaircraft.com
On Apr 19, 2014, at 6:24 PM, "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:
| Quote: |
The pop off (pressure RELIEF) valve is controlled by spring tension. The tighter you make the "top hat" (turn it clockwise), the higher the pressure goes. When the pressure reaches the preset spring pressure, the valve opens. The hiss is the pressure relief which stops when the pop off valve closes. This is perfectly normal. It's just like the pressure relief valve on a shop compressor. If the pressure in the compressor exceeds the pressure relief valve preset pressure, the valve opens and "dumps" the excess pressure.
Dennis
From: Jim Shanks <shankeroid(at)verizon.net (shankeroid(at)verizon.net)>
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Sent: Saturday, April 19, 2014 10:21 AM
Subject: Hissing Pop-Off Valve
When servicing the air system on our stock CJ, the pop-off valve begins “hissing” at around 32 ATM and “pops-off” at around 38 ATM (not allowing system to be pressurized any higher.) After popping off and servicing discontinued, hissing will continue (slowly diminishing) until pressure settles at around 32 ATM. Although probably plenty for a few start attempts, I want to fix the problem and have the full 50 ATM available.
I know the valve is adjustable, but is the hissing a separate problem that needs to be addressed? Also, what specifically is causing the valve to hiss?
Thanks.
Jim Shanks
shankeroid(at)verizon.net (shankeroid(at)verizon.net)
| Quote: | | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dist"">http://www.matronics.com/Navigator?Yak-ListMailScanner has detected a possible fraud attempt from "f==========" claiming to be D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D//forums.matronics.comMailScanner has detected a possible fraud attempt from "f==========" claiming to be D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dot;">http://www.matronics.com/contributionMailScanner has detected a possible fraud attempt from "f==========" claiming to be |
01
|
234567
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. 8901234567
|
890123456789 | Quote: | | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
0 | Quote: | | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
1 | Quote: | | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
2 | Quote: | | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
3 | Quote: | | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
4 | Quote: | | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
5
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
[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 |
|
|
|
| Back to top |
|
|
jbyak52(at)gmail.com
Guest
|
| Posted: Sun Apr 20, 2014 6:13 pm Post subject: M-14P Air pump |
|
|
Who makes a 1/4 turn dump valve
Sent from my iPad
[quote] On Apr 20, 2014, at 4:27, "Richard Goode" <richard.goode(at)russianaeros.com> wrote:
Obviously the power required for the compressor depends on the pressure. But if it is at high pressure – that is normal operating pressure, when the pressure-release valve blows off and then a little later the compressor starts working again that is all at high pressure, when it uses about 2.5 hp, so not really noticeable.
But the opening of the release valve does not allow the compressor to work off load – it has released some pressure, which makes the compressor then work again to build up the pressure in a continuing cycle!
But the real advantage of opening a "dump-valve" is that the compressor then runs off-load for most of the time. In our experience the compressors are a weak part of these engines, and very often do not reach the engine TBO, but if running off-load, they will last indefinitely.
There is also a side advantage that if the compressor is not continuously working, it's not then putting some atmospheric water into the air system. Of course this shouldn't happen, but many people don't release the water drain sufficiently often, and so it goes quite a long way to prevent this problem
| | - 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 |
|
|
|
| Back to top |
|
|
dsavarese0812(at)bellsout
Guest
|
| Posted: Mon Apr 21, 2014 3:05 am Post subject: M-14P Air pump |
|
|
Here's a really good one.
http://www.swagelok.com/search/find_products_home.aspx?part=SS-42GF2-A
Dennis
From: Jim Burke <jbyak52(at)gmail.com>
To: "yak-list(at)matronics.com" <yak-list(at)matronics.com>
Sent: Sunday, April 20, 2014 9:13 PM
Subject: Re: M-14P Air pump
Who makes a 1/4 turn dump valve
Sent from my iPad
On Apr 20, 2014, at 4:27, "Richard Goode" <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
| Quote: | Obviously the power required for the compressor depends on the pressure. But if it is at high pressure – that is normal operating pressure, when the pressure-release valve blows off and then a little later the compressor starts working again that is all at high pressure, when it uses about 2.5 hp, so not really noticeable.
But the opening of the release valve does not allow the compressor to work off load – it has released some pressure, which makes the compressor then work again to build up the pressure in a continuing cycle!
But the real advantage of opening a "dump-valve" is that the compressor then runs off-load for most of the time. In our experience the compressors are a weak part of these engines, and very often do not reach the engine TBO, but if running off-load, they will last indefinitely.
There is also a side advantage that if the compressor is not continuously working, it's not then putting some atmospheric water into the air system. Of course this shouldn't happen, but many people don't release the water drain sufficiently often, and so it goes quite a long way to prevent this problem.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
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 Todd McCutchan
Sent: 20 April 2014 02:52
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: M-14P Air pump
How much HP difference is there between a "loaded" and "unloaded" air compressor on the M-14P?
I have heard of guys putting in a manual "bypass" dumping air from the compressor overboard to "unload" the compressor for more HP.
I would think this is both
A) minimal increase in HP (1 - 2 HP?)
And
B) once your air is "topped off" doesn't the pressure relief valve or "pop off" valve open and perform the exact same function?
Todd McCutchan
T-34A & Yak-50
Cell: (260) 402-1740
E-mail: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
www.fastaircraft.com
On Apr 19, 2014, at 6:24 PM, "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:
| Quote: | The pop off (pressure RELIEF) valve is controlled by spring tension. The tighter you make the "top hat" (turn it clockwise), the higher the pressure goes. When the pressure reaches the preset spring pressure, the valve opens. The hiss is the pressure relief which stops when the pop off valve closes. This is perfectly normal. It's just like the pressure relief valve on a shop compressor. If the pressure in the compressor exceeds the pressure relief valve preset pressure, the valve opens and "dumps" the excess pressure.
Dennis
From: Jim Shanks <shankeroid(at)verizon.net (shankeroid(at)verizon.net)>
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Sent: Saturday, April 19, 2014 10:21 AM
Subject: Hissing Pop-Off Valve
When servicing the air system on our stock CJ, the pop-off valve begins “hissing” at around 32 ATM and “pops-off” at around 38 ATM (not allowing system to be pressurized any higher.) After popping off and servicing discontinued, hissing will continue (slowly diminishing) until pressure settles at around 32 ATM. Although probably plenty for a few start attempts, I want to fix the problem and have the full 50 ATM available.
I know the valve is adjustable, but is the hissing a separate problem that needs to be addressed? Also, what specifically is causing the valve to hiss?
Thanks.
Jim Shanks
shankeroid(at)verizon.net (shankeroid(at)verizon.net)
| Quote: | D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dist"">http://www.matronics.com/Navigator?Yak-ListMailScanner has detected a possible fraud attempt from "f==========" claiming to be D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D//forums.matronics.comMailScanner has detected a possible fraud attempt from "f==========" claiming to be D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dot;">http://www.matronics.com/contributionMailScanner has detected a
possible fraud attempt from "f==========" claiming to be |
01
|
234567890123456789
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
0
|
1
[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 |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
