 |
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
|
|
| Back to top |
|
 |
jan.mevis(at)informavia.b
Guest
|
|
| Back to top |
|
|
richard.goode(at)russiana
Guest
|
 Posted: Sat Sep 28, 2013 12:47 am Post subject: Hydrostatic tests |
 |
|
Hi Todd,
I can tell you from experience that the real problem in both undercarriages and the high-pressure air bottles is water, and so many Western pilots do not methodically drain the system at least every day.
Once water starts getting into the retraction cylinders, they quickly corrode, and while they should have an overhaul life of only six years, this can be dramatically reduced. Equally, I can tell you that we had a yak 50 where the high-pressure bottle blew up while the aircraft was on the ground, causing incredible damage, and certainly would have brought the aircraft down had it been airborne! Again, totally due to water getting inside and corroding the bottle internally.
My own leaf is to test the bottle to 100 bar (twice operating pressure) every year!
Regards
Richard
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 [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Todd McCutchan
Sent: 28 September 2013 00:44
To: yak-list(at)matronics.com
Subject: Hydrostatic tests
How often is the hydrostatic test of the main and emergency bottles required?
Todd McCutchan
Fast Aircraft
T-34A & Yak-50
Cell - 260.402.1740
Email: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
Skype: tmccutchan
Web: www.fastaircraft.com & www.toddmccutchanairshows.com
| Quote: | | http://www.matronics.com/Navigator?Yak-List |
0123456789
--
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 |
|
|
jan.mevis(at)informavia.b
Guest
|
| Posted: Sat Sep 28, 2013 1:01 am Post subject: Hydrostatic tests |
|
|
You are absolutely right Richard.
And although according to the Kardex, I only have to check hydrostatically every 5 years, I do it annually too.
I can imagine that this is less urgent in dry desert-like regions, but in Western Europe it's appropriate to do it yearly.
Same thing: servicing of the gear actuators each winter, plane on jacks, with the whole scenario of swing-testing.
Jan
From: Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Saturday 28 September 2013 10:45
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: RE: Hydrostatic tests
<![endif]--> <![endif]-->
Hi Todd,
I can tell you from experience that the real problem in both undercarriages and the high-pressure air bottles is water, and so many Western pilots do not methodically drain the system at least every day.
Once water starts getting into the retraction cylinders, they quickly corrode, and while they should have an overhaul life of only six years, this can be dramatically reduced. Equally, I can tell you that we had a yak 50 where the high-pressure bottle blew up while the aircraft was on the ground, causing incredible damage, and certainly would have brought the aircraft down had it been airborne! Again, totally due to water getting inside and corroding the bottle internally.
My own leaf is to test the bottle to 100 bar (twice operating pressure) every year!
Regards
Richard
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: 28 September 2013 00:44
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Hydrostatic tests
How often is the hydrostatic test of the main and emergency bottles required?
Todd McCutchan
Fast Aircraft
T-34A & Yak-50
Cell - 260.402.1740
Email: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
Skype: tmccutchan
Web: www.fastaircraft.com & www.toddmccutchanairshows.com
0123456789
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
0
[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: Sat Sep 28, 2013 7:49 am Post subject: Hydrostatic tests |
|
|
Thanks guys.
I live in AZ so will have a think about the bottles. Obviously a good scoping is in order annually. I have seen some pics of the 50 that the bottle blew and have no desire for a repeat performance over here.
So landing gear seals every 6 years then?
Todd McCutchanT-34A & Yak-50
Cell (260) 402-1740
E-mail todd(at)fastaircraft.com (todd(at)fastaircraft.com)
www.fastaircraft.com
On Sep 28, 2013, at 1:58 AM, Jan Mevis <jan.mevis(at)informavia.be (jan.mevis(at)informavia.be)> wrote:
[quote]You are absolutely right Richard.
And although according to the Kardex, I only have to check hydrostatically every 5 years, I do it annually too.
I can imagine that this is less urgent in dry desert-like regions, but in Western Europe it's appropriate to do it yearly.
Same thing: servicing of the gear actuators each winter, plane on jacks, with the whole scenario of swing-testing.
Jan
From: Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Saturday 28 September 2013 10:45
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: RE: Hydrostatic tests
<![endif]--> <![endif]-->
Hi Todd,
I can tell you from experience that the real problem in both undercarriages and the high-pressure air bottles is water, and so many Western pilots do not methodically drain the system at least every day.
Once water starts getting into the retraction cylinders, they quickly corrode, and while they should have an overhaul life of only six years, this can be dramatically reduced. Equally, I can tell you that we had a yak 50 where the high-pressure bottle blew up while the aircraft was on the ground, causing incredible damage, and certainly would have brought the aircraft down had it been airborne! Again, totally due to water getting inside and corroding the bottle internally.
My own leaf is to test the bottle to 100 bar (twice operating pressure) every year!
Regards
Richard
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: 28 September 2013 00:44
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Hydrostatic tests
How often is the hydrostatic test of the main and emergency bottles required?
Todd McCutchan
Fast Aircraft
T-34A & Yak-50
Cell - 260.402.1740
Email: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
Skype: tmccutchan
Web: www.fastaircraft.com & www.toddmccutchanairshows.com
0123456789
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
0
1
[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 |
|
|
wlannon(at)shaw.ca
Guest
|
| Posted: Sat Sep 28, 2013 8:41 am Post subject: Hydrostatic tests |
|
|
Richard;
I hope you are having that done by a qualified shop using the hydrostatic method. At 100 Bar you are exceeding the allowable test limit if the Russian specs. are the same as Western. That is typically 5/3 X the max operating pressure. However this does not apply to a welded bottle.
The CJ6 bottles are welded and the max. hydro test pressure given is 75 Bar. Less than the 83 Bar allowed for a non-welded bottle at the same operating pressure. I assume the Russian bottles are also welded.
Walt
From: Richard Goode (richard.goode(at)russianaeros.com)
Sent: Saturday, September 28, 2013 1:45 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: RE: Hydrostatic tests
Hi Todd,
I can tell you from experience that the real problem in both undercarriages and the high-pressure air bottles is water, and so many Western pilots do not methodically drain the system at least every day.
Once water starts getting into the retraction cylinders, they quickly corrode, and while they should have an overhaul life of only six years, this can be dramatically reduced. Equally, I can tell you that we had a yak 50 where the high-pressure bottle blew up while the aircraft was on the ground, causing incredible damage, and certainly would have brought the aircraft down had it been airborne! Again, totally due to water getting inside and corroding the bottle internally.
My own leaf is to test the bottle to 100 bar (twice operating pressure) every year!
Regards
Richard
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 [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Todd McCutchan
Sent: 28 September 2013 00:44
To: yak-list(at)matronics.com
Subject: Yak-List: Hydrostatic tests
How often is the hydrostatic test of the main and emergency bottles required?
Todd McCutchan
Fast Aircraft
T-34A & Yak-50
Cell - 260.402.1740
Email: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
Skype: tmccutchan
Web: www.fastaircraft.com & www.toddmccutchanairshows.com
| Quote: | | http://www.matronics.com/Navigator?Yak-List |
0123456789
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
0
[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 |
|
|
jan.mevis(at)informavia.b
Guest
|
| Posted: Sat Sep 28, 2013 10:16 am Post subject: Hydrostatic tests |
|
|
We have them checked at 75 bar, in France.
That should be enough.
Jan
From: Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Saturday 28 September 2013 18:37
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: Re: Hydrostatic tests
Richard;
I hope you are having that done by a qualified shop using the hydrostatic method. At 100 Bar you are exceeding the allowable test limit if the Russian specs. are the same as Western. That is typically 5/3 X the max operating pressure. However this does not apply to a welded bottle.
The CJ6 bottles are welded and the max. hydro test pressure given is 75 Bar. Less than the 83 Bar allowed for a non-welded bottle at the same operating pressure. I assume the Russian bottles are also welded.
Walt
From: Richard Goode (richard.goode(at)russianaeros.com)
Sent: Saturday, September 28, 2013 1:45 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: RE: Hydrostatic tests
Hi Todd,
I can tell you from experience that the real problem in both undercarriages and the high-pressure air bottles is water, and so many Western pilots do not methodically drain the system at least every day.
Once water starts getting into the retraction cylinders, they quickly corrode, and while they should have an overhaul life of only six years, this can be dramatically reduced. Equally, I can tell you that we had a yak 50 where the high-pressure bottle blew up while the aircraft was on the ground, causing incredible damage, and certainly would have brought the aircraft down had it been airborne! Again, totally due to water getting inside and corroding the bottle internally.
My own leaf is to test the bottle to 100 bar (twice operating pressure) every year!
Regards
Richard
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: 28 September 2013 00:44
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Hydrostatic tests
How often is the hydrostatic test of the main and emergency bottles required?
Todd McCutchan
Fast Aircraft
T-34A & Yak-50
Cell - 260.402.1740
Email: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
Skype: tmccutchan
Web: www.fastaircraft.com & www.toddmccutchanairshows.com
0123456789
--
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 |
|
|
richard.goode(at)russiana
Guest
|
| Posted: Sun Sep 29, 2013 12:00 am Post subject: Hydrostatic tests |
|
|
Hi Walt,
Yes, of course all tests should be done hydrostatically. You are correct that the Russian requirements is to test at 75 bar, but given that the operating range is up to 55 bar, and also that many people only test every three years, or even longer, during which time there is the opportunity for a a lot of corrosion and also the potentially catastrophic consequences of the bottle bursting, my purely personal view is that I want a larger safety margin in the test. I know from Russian sources that the ultimate design pressure is 200 bar, so my view is that, at 100 bar, there is still a lot in hand, and I would rather that it failed at 100 than in my aircraft!
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 [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Walter Lannon
Sent: 28 September 2013 17:38
To: yak-list(at)matronics.com
Subject: Re: Hydrostatic tests
Richard;
I hope you are having that done by a qualified shop using the hydrostatic method. At 100 Bar you are exceeding the allowable test limit if the Russian specs. are the same as Western. That is typically 5/3 X the max operating pressure. However this does not apply to a welded bottle.
The CJ6 bottles are welded and the max. hydro test pressure given is 75 Bar. Less than the 83 Bar allowed for a non-welded bottle at the same operating pressure. I assume the Russian bottles are also welded.
Walt
From: Richard Goode (richard.goode(at)russianaeros.com)
Sent: Saturday, September 28, 2013 1:45 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: RE: Hydrostatic tests
Hi Todd,
I can tell you from experience that the real problem in both undercarriages and the high-pressure air bottles is water, and so many Western pilots do not methodically drain the system at least every day.
Once water starts getting into the retraction cylinders, they quickly corrode, and while they should have an overhaul life of only six years, this can be dramatically reduced. Equally, I can tell you that we had a yak 50 where the high-pressure bottle blew up while the aircraft was on the ground, causing incredible damage, and certainly would have brought the aircraft down had it been airborne! Again, totally due to water getting inside and corroding the bottle internally.
My own leaf is to test the bottle to 100 bar (twice operating pressure) every year!
Regards
Richard
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: 28 September 2013 00:44
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Hydrostatic tests
How often is the hydrostatic test of the main and emergency bottles required?
Todd McCutchan
Fast Aircraft
T-34A & Yak-50
Cell - 260.402.1740
Email: todd(at)fastaircraft.com (todd(at)fastaircraft.com)
Skype: tmccutchan
Web: www.fastaircraft.com & www.toddmccutchanairshows.com
012345
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. 67890
123456789012345678
--
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 |
|
|
keithmckinley
Joined: 11 Aug 2008
Posts: 434
|
| Posted: Tue Oct 01, 2013 6:35 am Post subject: Re: Hydrostatic tests |
|
|
What about cleaning the bottles when they are out or the aircraft? Just out of curiosity what does R&Ring the drain plug on a daily basis do to the copper washer?
| | - 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 |
|
|
pilko2(at)btinternet.com
Guest
|
| Posted: Tue Oct 01, 2013 11:50 pm Post subject: Hydrostatic tests |
|
|
I was always taught "Best Practice" is never to reuse copper sealing
washers, replace with a new one every time. At the very least a used one
should be annealed before reuse.
Kp
--
| | - 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 |
|
|
keithmckinley
Joined: 11 Aug 2008
Posts: 434
|
| Posted: Wed Oct 02, 2013 5:38 am Post subject: Re: Hydrostatic tests |
|
|
agreed!
| | - 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 |
|
|
dougsappllc(at)gmail.com
Guest
|
| Posted: Wed Oct 02, 2013 7:56 am Post subject: Hydrostatic tests |
|
|
Copper crush washers and new plugs for the air tanks are in stock if you need them. And no, they should not be reused. However a word of warning do not try to remove the plug with anything less than a tight fitting box end or socket. A open end or your good old "adjustable metric spanner" will lop off the the hex corners, then your only option will be to weld a piece of bar stock to the plug in order to remove it.
Doug
On Wed, Oct 2, 2013 at 12:44 AM, kevin pilling <pilko2(at)btinternet.com (pilko2(at)btinternet.com)> wrote:
[quote]--> Yak-List message posted by: "kevin pilling" <pilko2(at)btinternet.com (pilko2(at)btinternet.com)>
I was always taught "Best Practice" is never to reuse copper sealing
washers, replace with a new one every time. At the very least a used one
should be annealed before reuse.
Kp
--
| | - 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 |
|
|
KingCJ6(at)aol.com
Guest
|
| Posted: Wed Oct 02, 2013 2:15 pm Post subject: Hydrostatic tests |
|
|
A number of years ago, after a hydrostatic test, we installed a new copper crush washer as tight as possible with a 12ā socket. A week later we started experiencing an air leak that took a few weeks to trace. Eventually an ultrasonic leak detector pointed us to the main tank drain. A further 1/16 rotation on the plug, using an 18ā ābreaker barā pipe, stopped the leak instantly.
As Doug suggests, given the torque often needed to secure this plug, invest in a good 6 point (not 12) socket or wrench as you will likely round the corners without one.
Dave
In a message dated 10/2/2013 12:01:15 P.M. Pacific Daylight Time, dougsappllc(at)gmail.com writes:
[quote] Copper crush washers and new plugs for the air tanks are in stock if you need them. And no, they should not be reused. However a word of warning do not try to remove the plug with anything less than a tight fitting box end or socket. A open end or your good old "adjustable metric spanner" will lop off the the hex corners, then your only option will be to weld a piece of bar stock to the plug in order to remove it.
Doug
On Wed, Oct 2, 2013 at 12:44 AM, kevin pilling <pilko2(at)btinternet.com (pilko2(at)btinternet.com)> wrote:
[quote]--> Yak-List message posted by: "kevin pilling" <pilko2(at)btinternet.com (pilko2(at)btinternet.com)>
I was always taught "Best Practice" is never to reuse copper sealing
washers, replace with a new one every time. At the very least a used one
should be annealed before reuse.
Kp
--
| | - 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 |
|
|
Vic
Joined: 12 Aug 2008
Posts: 115
Location: Southern Bavaria
|
| Posted: Wed Oct 02, 2013 5:27 pm Post subject: Re: Hydrostatic tests |
|
|
Hi,
instead of copper crush washers IĀ“d rather go for an O-ring design in this place. You would not have to apply that high torque to get a decent seal and could reuse the o-ring a few times. We are running an 18 T for 7 years now and never ever had water in the bottles since. But certainly we drain the system at the fire wall in the very first minute after engine shut-down -- everytime. Nevertheless I use clear motorbike chain grease for rust protection in the bottles and they still look new inside checked by endoscope.
Cheers
Vic
| | - 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 |
|
|
viperdoc(at)mindspring.co
Guest
|
| Posted: Wed Oct 02, 2013 6:59 pm Post subject: Hydrostatic tests |
|
|
So out of curiosity how are getting the clear grease distributed through out the interior of the tank?
Doc
Sent from my iPad
On Oct 2, 2013, at 8:27 PM, "Vic" <vicmolnar(at)aol.com> wrote:
| Quote: |
Hi,
instead of copper crush washers IĀ“d rather go for an O-ring design in this place. You would not have to apply that high torque to get a decent seal and could reuse the o-ring a few times. We are running an 18 T for 7 years now and never ever had water in the bottles since. But certainly we drain the system at the fire wall in the very first minute after engine shut-down -- everytime. Nevertheless I use clear motorbike chain grease for rust protection in the bottles and they still look new inside checked by endoscope.
Cheers
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=409730#409730
|
| | - 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 |
|
|
Vic
Joined: 12 Aug 2008
Posts: 115
Location: Southern Bavaria
|
| Posted: Thu Oct 03, 2013 2:19 am Post subject: Re: Hydrostatic tests |
|
|
Hi Doc,
the chain grease has a lot of solvent fresh from the spray can. When you have the bottles removed from the plane it is easy to fill a quantity of grease in the bottle and spread this while it is fluid. Soon this gets real sticky and stays where it belongs and will not find into the rest of pipes and valves. By the way, I donĀ“t see much use for glycerine in the system as this is water soluble and will soon be through it leaving no more protection. But then , it doesĀ“t do any harm either. In no way would I use WD 40 as this can gum up in places, showing like resin properties when dry. Just try this somewhere and see later in a few days. This can block mechanics - unlike some chain grease., but test this first for some time.
Vic
| | - 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 |
|
|
keithmckinley
Joined: 11 Aug 2008
Posts: 434
|
|
| 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
