Today's Message Index:
----------------------
1. 12:27 AM - Air charging valve? (John B)
2. 01:09 AM - Re: Air charging valve? (Richard Goode)
3. 01:54 AM - Re: Air charging valve? (CHRIS ABBOTT)
4. 04:19 AM - Re: Air charging valve? (A. Dennis Savarese)
5. 04:37 AM - Re: Air charging valve? (A. Dennis Savarese)
6. 06:01 AM - Re: Air charging valve? (George S. Coy)
7. 06:05 AM - Re: Air charging valve? (George S. Coy)
8. 06:13 AM - Re: Air charging valve? (migfighter42)
9. 06:17 AM - Re: Air charging valve? (John B)
10. 06:37 AM - Re: Air charging valve? (George S. Coy)
11. 08:37 AM - Re: Air charging valve? (William Halverson)
12. 08:55 AM - =?utf-8?Q?Re=3A_Yak-List=3A_Air_charging_valve=3F? (jlpartington@reagan.com)
13. 09:23 AM - Re: [Non-DoD Source] Re: Air charging valve? (Bitterlich, Mark G CIV NAVAIR, WD)
14. 09:41 AM - Re: Re: Air charging valve? (Justin Drafts)
15. 12:07 PM - Control centring springs Yak 52 (CHRIS ABBOTT)
16. 12:21 PM - Re: Air charging valve? (Looigi)
17. 01:13 PM - Re: Re: Air charging valve? (Hans Oortman)
18. 03:31 PM - Re: great video on radial operation (nylbrooks)
19. 06:43 PM - Re: Re: Air charging valve? (John B)
20. 08:29 PM - Re: Air charging valve? (Roger Kemp)
21. 08:38 PM - Re: Re: Air charging valve? (Roger Kemp)
22. 09:05 PM - Re: Re: Air charging valve? (Jan Mevis)
23. 09:12 PM - Re: Re: Air charging valve? (Jan Mevis)
24. 09:34 PM - Re: Air charging valve? (Looigi)
25. 10:08 PM - Re: Re: Air charging valve? (John B)
Message 1
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| Subject: | Air charging valve? |
What valve are most folks using on the air bottle?
There seems to be a Russian valve, and sometimes this is removed an a
shreader valve is installed. Spelled correctly?
Thank you!
Message 2
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| Subject: | Air charging valve? |
I know that a number of people do use the Schrader valve, but I have
always been concerned since the normal operating pressure is up to 5 bar
(that is for automotive tires), and in our air systems the pressure can
be over 50 bar!
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +94 (0) 81 241 5137 (Sri Lanka)
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
I=99m currently in Sri Lanka but this Mail is working,and my local
phone is +94 779 132 160.
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of John B
Sent: Monday, January 25, 2016 1:54 PM
Subject: Yak-List: Air charging valve?
What valve are most folks using on the air bottle?
There seems to be a Russian valve, and sometimes this is removed an a
shreader valve is installed. Spelled correctly?
Thank you!
--
This message has been scanned for viruses and
dangerous content by <http://www.mailscanner.info/> MailScanner, and is
believed to be clean.
Message 3
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| Subject: | Re: Air charging valve? |
Has anyone removed the self centring springs from a yak 52 ?,
if so is it as easy as removing the complete "Spring units" or do they have t
o be removed disassembled and the springs removed and then reinstalled ?
How is the elevator and aileron stops effected?
Chris Abbott
Sent from my iPad
> On 25 Jan 2016, at 8:06 PM, Richard Goode <richard.goode@russianaeros.com>
wrote:
>
> I know that a number of people do use the Schrader valve, but I have alway
s been concerned since the normal operating pressure is up to 5 bar (that is
for automotive tires), and in our air systems the pressure can be over 50 b
ar!
>
> Richard Goode
>
> Rhodds Farm
> Lyonshall
> Hereford
> HR5 3LW
> United Kingdom
> Tel: +94 (0) 81 241 5137 (Sri Lanka)
> Tel: +44 (0) 1544 340120
> Fax: +44 (0) 1544 340129
> www.russianaeros.com
> I=99m currently in Sri Lanka but this Mail is working,and my local p
hone is +94 779 132 160.
>
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@ma
tronics.com] On Behalf Of John B
> Sent: Monday, January 25, 2016 1:54 PM
> To: Yak-List Digest Server
> Subject: Yak-List: Air charging valve?
>
> What valve are most folks using on the air bottle?
> There seems to be a Russian valve, and sometimes this is removed an a shre
ader valve is installed. Spelled correctly?
> Thank you!
>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
Message 4
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| Subject: | Re: Air charging valve? |
Yes I have. Easy to do. Remove the complete assembly. There is no
affect on the elevator and aileron stops.
A word of caution. When you first fly the airplane after removing the
self centering you will have a tendency to over-control the airplane
because you have been used to the spring back-pressure.
Dennis
A. Dennis Savarese
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 1/25/2016 4:49 AM, CHRIS ABBOTT wrote:
> Has anyone removed the self centring springs from a yak 52 ?,
> if so is it as easy as removing the complete "Spring units" or do they
> have to be removed disassembled and the springs removed and then
> reinstalled ?
> How is the elevator and aileron stops effected?
>
> Chris Abbott
>
> Sent from my iPad
>
> On 25 Jan 2016, at 8:06 PM, Richard Goode
> <richard.goode@russianaeros.com
> <mailto:richard.goode@russianaeros.com>> wrote:
>
>> I know that a number of people do use the Schrader valve, but I have
>> always been concerned since the normal operating pressure is up to 5
>> bar (that is for automotive tires), and in our air systems the
>> pressure can be over 50 bar!
>>
>> Richard Goode
>>
>> Rhodds Farm
>>
>> Lyonshall
>>
>> Hereford
>>
>> HR5 3LW
>>
>> United Kingdom
>>
>> Tel: +94 (0) 81 241 5137 (Sri Lanka)
>>
>> Tel: +44 (0) 1544 340120
>>
>> Fax: +44 (0) 1544 340129
>>
>> www.russianaeros.com <http://www.russianaeros.com>
>>
>> Im currently in Sri Lanka but this Mail is working,and my local
>> phone is +94 779 132 160.
>>
>> *From:*owner-yak-list-server@matronics.com
>> <mailto:owner-yak-list-server@matronics.com>
>> [mailto:owner-yak-list-server@matronics.com] *On Behalf Of *John B
>> *Sent:* Monday, January 25, 2016 1:54 PM
>> *To:* Yak-List Digest Server
>> *Subject:* Yak-List: Air charging valve?
>>
>> What valve are most folks using on the air bottle?
>>
>> There seems to be a Russian valve, and sometimes this is removed an a
>> shreader valve is installed. Spelled correctly?
>>
>> Thank you!
>>
>>
>> --
>> This message has been scanned for viruses and
>> dangerous content by *MailScanner* <http://www.mailscanner.info/>,
>> and is
>> believed to be clean.
>>
Message 5
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| Subject: | Re: Air charging valve? |
My question is why do you need to install any type of valve directly on
the air bottle?
When we install a Schrader valve on the external air fill port cover
(for ease of refilling), we most definitely remove the valve core
completely because it serves no purpose since the port is protected by
check valves on both the main and emergency systems. Now if one chooses
to leave a valve core inthe Schrader valve, then a high pressure valve
core must be used. Here is an excerpt from anarticle I found on valve cores.
"Even on small aircraft, the pressures that exist inside of
a landing gear strut, especially on landing, are quite high
compared to that of a typical tire. The typical Schrader
valve that we fi nd in aviation tire applications is usually
part number 6035 which has a standard operating pressure
from 0 to 400 PSI and a normal operating pressures normally
not over 70 PSI. However, the typical Schrader valve
that we should find in an aviation shock strut or hydraulic
accumulator should be Schrader part number 2300TV.
This valve has an operating pressure from 0 to 2000 PSI."
This high pressure valve core is available from Aircraft Spruce.
http://www.aircraftspruce.com/catalog/lgpages/2300hv.php
Dennis
A. Dennis Savarese
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 1/25/2016 4:06 AM, Richard Goode wrote:
>
> I know that a number of people do use the Schrader valve, but I have
> always been concerned since the normal operating pressure is up to 5
> bar (that is for automotive tires), and in our air systems the
> pressure can be over 50 bar!
>
> Richard Goode
>
> Rhodds Farm
>
> Lyonshall
>
> Hereford
>
> HR5 3LW
>
> United Kingdom
>
> Tel: +94 (0) 81 241 5137 (Sri Lanka)
>
> Tel: +44 (0) 1544 340120
>
> Fax: +44 (0) 1544 340129
>
> www.russianaeros.com <http://www.russianaeros.com>
>
> Im currently in Sri Lanka but this Mail is working,and my local phone
> is +94 779 132 160.
>
> *From:*owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] *On Behalf Of *John B
> *Sent:* Monday, January 25, 2016 1:54 PM
> *To:* Yak-List Digest Server
> *Subject:* Yak-List: Air charging valve?
>
> What valve are most folks using on the air bottle?
>
> There seems to be a Russian valve, and sometimes this is removed an a
> shreader valve is installed. Spelled correctly?
>
> Thank you!
>
>
> --
> This message has been scanned for viruses and
> dangerous content by *MailScanner* <http://www.mailscanner.info/>, and is
> believed to be clean.
>
Message 6
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| Subject: | Air charging valve? |
There is a high pressure version typically used on Cessna nose struts
and Piper main struts The Cessna unit is S1827-1
George
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode
Sent: Monday, January 25, 2016 4:06 AM
Subject: RE: Yak-List: Air charging valve?
I know that a number of people do use the Schrader valve, but I have
always been concerned since the normal operating pressure is up to 5 bar
(that is for automotive tires), and in our air systems the pressure can
be over 50 bar!
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +94 (0) 81 241 5137 (Sri Lanka)
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
I=99m currently in Sri Lanka but this Mail is working,and my local
phone is +94 779 132 160.
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of John B
Sent: Monday, January 25, 2016 1:54 PM
Subject: Yak-List: Air charging valve?
What valve are most folks using on the air bottle?
There seems to be a Russian valve, and sometimes this is removed an a
shreader valve is installed. Spelled correctly?
Thank you!
--
This message has been scanned for viruses and
dangerous content by <http://www.mailscanner.info/> MailScanner, and is
believed to be clean.
Message 7
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| Subject: | Air charging valve? |
After they are removed, the remaining tabs make a perfect place to mount your autopilot
servos. The 52W and 52TW came without the centering springs.
George
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of A. Dennis Savarese
Sent: Monday, January 25, 2016 7:16 AM
Subject: Re: Yak-List: Air charging valve?
--> <dsavarese0812@bellsouth.net>
Yes I have. Easy to do. Remove the complete assembly. There is no affect on the
elevator and aileron stops.
A word of caution. When you first fly the airplane after removing the self centering
you will have a tendency to over-control the airplane because you have
been used to the spring back-pressure.
Dennis
A. Dennis Savarese
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 1/25/2016 4:49 AM, CHRIS ABBOTT wrote:
> Has anyone removed the self centring springs from a yak 52 ?, if so is
> it as easy as removing the complete "Spring units" or do they have to
> be removed disassembled and the springs removed and then reinstalled ?
> How is the elevator and aileron stops effected?
>
> Chris Abbott
>
> Sent from my iPad
>
> On 25 Jan 2016, at 8:06 PM, Richard Goode
> <richard.goode@russianaeros.com
> <mailto:richard.goode@russianaeros.com>> wrote:
>
>> I know that a number of people do use the Schrader valve, but I have
>> always been concerned since the normal operating pressure is up to 5
>> bar (that is for automotive tires), and in our air systems the
>> pressure can be over 50 bar!
>>
>> Richard Goode
>>
>> Rhodds Farm
>>
>> Lyonshall
>>
>> Hereford
>>
>> HR5 3LW
>>
>> United Kingdom
>>
>> Tel: +94 (0) 81 241 5137 (Sri Lanka)
>>
>> Tel: +44 (0) 1544 340120
>>
>> Fax: +44 (0) 1544 340129
>>
>> www.russianaeros.com <http://www.russianaeros.com>
>>
>> Im currently in Sri Lanka but this Mail is working,and my local
>> phone is +94 779 132 160.
>>
>> *From:*owner-yak-list-server@matronics.com
>> <mailto:owner-yak-list-server@matronics.com>
>> [mailto:owner-yak-list-server@matronics.com] *On Behalf Of *John B
>> *Sent:* Monday, January 25, 2016 1:54 PM
>> *To:* Yak-List Digest Server
>> *Subject:* Yak-List: Air charging valve?
>>
>> What valve are most folks using on the air bottle?
>>
>> There seems to be a Russian valve, and sometimes this is removed an a
>> shreader valve is installed. Spelled correctly?
>>
>> Thank you!
>>
>>
>> --
>> This message has been scanned for viruses and dangerous content by
>> *MailScanner* <http://www.mailscanner.info/>, and is believed to be
>> clean.
>>
Message 8
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| Subject: | Air charging valve? |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Message 9
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| Subject: | Re: Air charging valve? |
Is it possible, or even advisable, to charge the air system with oxygen?
The high-pressure Schreader valve might allow this to be done, if one was
stuck at an airport with no SCUBA tank available.
Thanks!
On Mon, Jan 25, 2016 at 6:57 AM, George S. Coy <george.coy@gmail.com> wrote
:
> There is a high pressure version typically used on Cessna nose struts and
> Piper main struts The Cessna unit is S1827-1
>
> George
>
>
> *From:* owner-yak-list-server@matronics.com [mailto:
> owner-yak-list-server@matronics.com] *On Behalf Of *Richard Goode
> *Sent:* Monday, January 25, 2016 4:06 AM
> *To:* yak-list@matronics.com
> *Subject:* RE: Yak-List: Air charging valve?
>
>
> I know that a number of people do use the Schrader valve, but I have
> always been concerned since the normal operating pressure is up to 5 bar
> (that is for automotive tires), and in our air systems the pressure can b
e
> over 50 bar!
>
>
> Richard Goode
>
>
> Rhodds Farm
>
> Lyonshall
>
> Hereford
>
> HR5 3LW
>
> United Kingdom
>
> Tel: +94 (0) 81 241 5137 (Sri Lanka)
>
> Tel: +44 (0) 1544 340120
>
> Fax: +44 (0) 1544 340129
>
> www.russianaeros.com
>
> I=99m currently in Sri Lanka but this Mail is working,and my local
phone is +94
> 779 132 160.
>
>
> *From:* owner-yak-list-server@matronics.com [
> mailto:owner-yak-list-server@matronics.com
> <owner-yak-list-server@matronics.com>] *On Behalf Of *John B
> *Sent:* Monday, January 25, 2016 1:54 PM
> *To:* Yak-List Digest Server
> *Subject:* Yak-List: Air charging valve?
>
>
> What valve are most folks using on the air bottle?
>
> There seems to be a Russian valve, and sometimes this is removed an a
> shreader valve is installed. Spelled correctly?
>
> Thank you!
>
>
> --
> This message has been scanned for viruses and
> dangerous content by *MailScanner* <http://www.mailscanner.info/>, and is
> believed to be clean.
>
Message 10
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| Subject: | Air charging valve? |
Hmmm if you try it, I suggest you stand back about a mile, notify your
insurance company in advance and have the fire dept. on standby as high
pressure oxygen and oils make dandy explosives.
It has been done with the obvious resulting explosions.
George
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of John B
Sent: Monday, January 25, 2016 9:14 AM
Subject: Re: Yak-List: Air charging valve?
Is it possible, or even advisable, to charge the air system with oxygen?
The high-pressure Schreader valve might allow this to be done, if one
was stuck at an airport with no SCUBA tank available.
Thanks!
On Mon, Jan 25, 2016 at 6:57 AM, George S. Coy <george.coy@gmail.com>
wrote:
There is a high pressure version typically used on Cessna nose struts
and Piper main struts The Cessna unit is S1827-1
George
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode
Sent: Monday, January 25, 2016 4:06 AM
Subject: RE: Yak-List: Air charging valve?
I know that a number of people do use the Schrader valve, but I have
always been concerned since the normal operating pressure is up to 5 bar
(that is for automotive tires), and in our air systems the pressure can
be over 50 bar!
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +94 (0) 81 241 5137 (Sri Lanka)
Tel: +44 (0) 1544 340120 <tel:%2B44%20%280%29%201544%20340120>
Fax: +44 (0) 1544 340129 <tel:%2B44%20%280%29%201544%20340129>
www.russianaeros.com
I=99m currently in Sri Lanka but this Mail is working,and my local
phone is +94 779 132 160 <tel:%2B94%20779%20132%20160> .
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of John B
Sent: Monday, January 25, 2016 1:54 PM
Subject: Yak-List: Air charging valve?
What valve are most folks using on the air bottle?
There seems to be a Russian valve, and sometimes this is removed an a
shreader valve is installed. Spelled correctly?
Thank you!
--
This message has been scanned for viruses and
dangerous content by <http://www.mailscanner.info/> MailScanner, and is
believed to be clean.
Message 11
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| Subject: | Re: Air charging valve? |
Not a good idea ...
Typos courtesy of Siri
> On Jan 25, 2016, at 09:14, John B <jbsoar@gmail.com> wrote:
>
> Is it possible, or even advisable, to charge the air system with oxygen? T
he high-pressure Schreader valve might allow this to be done, if one was stu
ck at an airport with no SCUBA tank available.
> Thanks!
>
>> On Mon, Jan 25, 2016 at 6:57 AM, George S. Coy <george.coy@gmail.com> wro
te:
>> There is a high pressure version typically used on Cessna nose struts and
Piper main struts The Cessna unit is S1827-1
>>
>> George
>>
>>
>>
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
atronics.com] On Behalf Of Richard Goode
>> Sent: Monday, January 25, 2016 4:06 AM
>> To: yak-list@matronics.com
>> Subject: RE: Yak-List: Air charging valve?
>>
>>
>>
>> I know that a number of people do use the Schrader valve, but I have alwa
ys been concerned since the normal operating pressure is up to 5 bar (that i
s for automotive tires), and in our air systems the pressure can be over 50 b
ar!
>>
>>
>>
>> Richard Goode
>>
>>
>>
>> Rhodds Farm
>>
>> Lyonshall
>>
>> Hereford
>>
>> HR5 3LW
>>
>> United Kingdom
>>
>> Tel: +94 (0) 81 241 5137 (Sri Lanka)
>>
>> Tel: +44 (0) 1544 340120
>>
>> Fax: +44 (0) 1544 340129
>>
>> www.russianaeros.com
>>
>> I=99m currently in Sri Lanka but this Mail is working,and my local p
hone is +94 779 132 160.
>>
>>
>>
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
atronics.com] On Behalf Of John B
>> Sent: Monday, January 25, 2016 1:54 PM
>> To: Yak-List Digest Server
>> Subject: Yak-List: Air charging valve?
>>
>>
>>
>> What valve are most folks using on the air bottle?
>>
>> There seems to be a Russian valve, and sometimes this is removed an a shr
eader valve is installed. Spelled correctly?
>>
>> Thank you!
>>
>>
>> --
>> This message has been scanned for viruses and
>> dangerous content by MailScanner, and is
>> believed to be clean.
>>
>
Message 12
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| Subject: | =?utf-8?Q?Re=3A_Yak-List=3A_Air_charging_valve=3F? |
=0Amost places that have oxygen should have nitrogen, cheaper and less like
ly to cause problems with much oxygen around in case of fire.=0A =0A-----Or
iginal Message-----=0AFrom: "William Halverson" <william@netpros.net>=0ASen
t: Monday, 25 January, 2016 10:33am=0ATo: yak-list@matronics.com=0ASubject:
Re: Yak-List: Air charging valve?=0A=0A=0A=0ANot a good idea ...=0A=0ATypo
s courtesy of Siri=0A=0AOn Jan 25, 2016, at 09:14, John B <[ jbsoar@gmail.c
om ]( mailto:jbsoar@gmail.com )> wrote:=0A=0A=0A=0AIs it possible, or even
advisable, to charge the air system with oxygen? The high-pressure Schread
er valve might allow this to be done, if one was stuck at an airport with n
o SCUBA tank available.=0AThanks!=0A=0A=0AOn Mon, Jan 25, 2016 at 6:57 AM,
George S. Coy <[ george.coy@gmail.com ]( mailto:george.coy@gmail.com )> wro
te:=0A=0A=0A=0AThere is a high pressure version typically used on Cessna no
se struts and Piper main struts The Cessna unit is S1827-1=0AGeorge=0A =0A
=0A=0AFrom: [ owner-yak-list-server@matronics.com ]( mailto:owner-yak-list-
server@matronics.com ) [mailto:[ owner-yak-list-server@matronics.com ]( mai
lto:owner-yak-list-server@matronics.com )] On Behalf Of Richard Goode=0ASen
t: Monday, January 25, 2016 4:06 AM=0ATo: [ yak-list@matronics.com ]( mailt
o:yak-list@matronics.com )=0ASubject: RE: Yak-List: Air charging valve?=0A
=0AI know that a number of people do use the Schrader valve, but I have alw
ays been concerned since the normal operating pressure is up to 5 bar (that
is for automotive tires), and in our air systems the pressure can be over
50 bar!=0A =0ARichard Goode=0A =0ARhodds Farm =0ALyonshall =0AHereford =0AH
R5 3LW =0AUnited Kingdom =0A Tel: +94 (0) 81 241 5137 (Sri Lanka)=0ATel:
[ +44 (0) 1544 340120 ]( tel:%2B44%20%280%29%201544%20340120 ) =0AFax: [ +
44 (0) 1544 340129 ]( tel:%2B44%20%280%29%201544%20340129 ) =0A[ www.russia
naeros.com ]( http://www.russianaeros.com )=0AI=99m currently in Sri
Lanka but this Mail is working,and my local phone is [ +94 779 132 160 ]( t
el:%2B94%20779%20132%20160 ).=0A =0A=0AFrom: [ owner-yak-list-server@matron
ics.com ]( mailto:owner-yak-list-server@matronics.com ) [[ mailto:owner-yak
-list-server@matronics.com ]( mailto:owner-yak-list-server@matronics.com )]
On Behalf Of John B=0ASent: Monday, January 25, 2016 1:54 PM=0ATo: Yak-Lis
t Digest Server=0ASubject: Yak-List: Air charging valve?=0A =0A=0AWhat valv
e are most folks using on the air bottle?=0A=0AThere seems to be a Russian
valve, and sometimes this is removed an a shreader valve is installed. Spe
lled correctly?=0A=0AThank you!=0A=0A-- =0AThis message has been scanned fo
r viruses and =0Adangerous content by [ MailScanner ]( http://www.mailscann
er.info/ ), and is =0Abelieved to be clean.=0A=0A=0A=0A
Message 13
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| Subject: | Re: Yak-List: Air charging valve? |
The M-14 injects compressed air into each cylinder for starting. Replace that
compressed air with pure oxygen and inject that into the engines cylinders, add
gasoline and a spark, and you are looking at a bomb, make no mistake. In
addition, the air system in the aircraft usually has a mixture of oils and other
"petroleum products" coating the inside of everything, tubes, tanks, actuators,
you name it. Fill the air tanks with oxygen and when you open the main
valve it goes everywhere. Inside of fittings and pipes, actuators, you name
it. You have now taken your whole aircraft and turned it into a potential bomb
just waiting for a spark.
The only reason I am writing this long drawn out comment is that this topic is
being treated a little bit too casually for my sometimes "over-reacting" self!
:-)
Not only "NO", but *****HELL NO !!!!****** Don't ever even *THINK* of filling
the air tanks in these aircraft with pure Oxygen, no matter WHAT the circumstance!
*EVER*
And has been mentioned .... it has been done, and the whole thing blew up.
On top of that, if anyone got hurt during such a process, "Criminal Negligence"
comes to mind. OMG!
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of jlpartington@reagan.com
Sent: Monday, January 25, 2016 11:52 AM
Subject: [Non-DoD Source] Yak-List: Re: Yak-List: Air charging valve?
most places that have oxygen should have nitrogen, cheaper and less likely to cause
problems with much oxygen around in case of fire.
-----Original Message-----
From: "William Halverson" <william@netpros.net>
Sent: Monday, 25 January, 2016 10:33am
Subject: Re: Yak-List: Air charging valve?
Not a good idea ...
Typos courtesy of Siri
On Jan 25, 2016, at 09:14, John B <jbsoar@gmail.com> wrote:
Is it possible, or even advisable, to charge the air system with oxygen? The
high-pressure Schreader valve might allow this to be done, if one was stuck at
an airport with no SCUBA tank available.
Thanks!
On Mon, Jan 25, 2016 at 6:57 AM, George S. Coy <george.coy@gmail.com> wrote:
There is a high pressure version typically used on Cessna nose struts and Piper
main struts The Cessna unit is S1827-1
George
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode
Sent: Monday, January 25, 2016 4:06 AM
To: yak-list@matronics.com
Subject: RE: Yak-List: Air charging valve?
I know that a number of people do use the Schrader valve, but I have always been
concerned since the normal operating pressure is up to 5 bar (that is for
automotive tires), and in our air systems the pressure can be over 50 bar!
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +94 (0) 81 241 5137 (Sri Lanka)
Tel: +44 (0) 1544 340120 <tel:%2B44%20%280%29%201544%20340120>
Fax: +44 (0) 1544 340129 <tel:%2B44%20%280%29%201544%20340129>
www.russianaeros.com
Im currently in Sri Lanka but this Mail is working,and my local phone is +94
779 132 160 <tel:%2B94%20779%20132%20160> .
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of John B
Sent: Monday, January 25, 2016 1:54 PM
To: Yak-List Digest Server
Subject: Yak-List: Air charging valve?
What valve are most folks using on the air bottle?
There seems to be a Russian valve, and sometimes this is removed an a shreader
valve is installed. Spelled correctly?
Thank you!
--
This message has been scanned for viruses and
dangerous content by MailScanner <http://www.mailscanner.info/> , and is
believed to be clean.
Message 14
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| Subject: | Re: Yak-List: Air charging valve? |
Pure O2 is terribly volatile, more likely as not to bring on an explosion
what with the oils & greases abounding in and around the system.
Out of desperation once off-base I had to use nitrogen to recharge my CJ
system, and found it works very very well, plus is completely harmless and
widely avail in high pressure containers.
I keep a 2500 psi cylinder in hangar for all my maintenance ($18 for a
refill at any welding supply shop).
Fyi,
Justin Drafts (A&P)
N280NC
On Jan 25, 2016 8:01 AM, <jlpartington@reagan.com> wrote:
> most places that have oxygen should have nitrogen, cheaper and less likel
y
> to cause problems with much oxygen around in case of fire.
>
>
> -----Original Message-----
> From: "William Halverson" <william@netpros.net>
> Sent: Monday, 25 January, 2016 10:33am
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Air charging valve?
>
> Not a good idea ...
>
> Typos courtesy of Siri
>
> On Jan 25, 2016, at 09:14, John B <jbsoar@gmail.com> wrote:
>
> Is it possible, or even advisable, to charge the air system with oxygen?
> The high-pressure Schreader valve might allow this to be done, if one was
> stuck at an airport with no SCUBA tank available.
> Thanks!
>
> On Mon, Jan 25, 2016 at 6:57 AM, George S. Coy <george.coy@gmail.com>
> wrote:
>
>> There is a high pressure version typically used on Cessna nose struts an
d
>> Piper main struts The Cessna unit is S1827-1
>>
>> George
>>
>>
>>
>> *From:* owner-yak-list-server@matronics.com [mailto:
>> owner-yak-list-server@matronics.com] *On Behalf Of *Richard Goode
>> *Sent:* Monday, January 25, 2016 4:06 AM
>> *To:* yak-list@matronics.com
>> *Subject:* RE: Yak-List: Air charging valve?
>>
>>
>>
>> I know that a number of people do use the Schrader valve, but I have
>> always been concerned since the normal operating pressure is up to 5 bar
>> (that is for automotive tires), and in our air systems the pressure can
be
>> over 50 bar!
>>
>>
>>
>> Richard Goode
>>
>>
>>
>> Rhodds Farm
>>
>> Lyonshall
>>
>> Hereford
>>
>> HR5 3LW
>>
>> United Kingdom
>>
>> Tel: +94 (0) 81 241 5137 (Sri Lanka)
>>
>> Tel: +44 (0) 1544 340120
>>
>> Fax: +44 (0) 1544 340129
>>
>> www.russianaeros.com
>>
>> I=99m currently in Sri Lanka but this Mail is working,and my local
phone is +94
>> 779 132 160.
>>
>>
>>
>> *From:* owner-yak-list-server@matronics.com [
>> mailto:owner-yak-list-server@matronics.com
>> <owner-yak-list-server@matronics.com>] *On Behalf Of *John B
>> *Sent:* Monday, January 25, 2016 1:54 PM
>> *To:* Yak-List Digest Server
>> *Subject:* Yak-List: Air charging valve?
>>
>>
>>
>> What valve are most folks using on the air bottle?
>>
>> There seems to be a Russian valve, and sometimes this is removed an a
>> shreader valve is installed. Spelled correctly?
>>
>> Thank you!
>>
>>
>> --
>> This message has been scanned for viruses and
>> dangerous content by *MailScanner* <http://www.mailscanner.info/>, and
>> is
>> believed to be clean.
>>
>
>
Message 15
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| Subject: | Control centring springs Yak 52 |
Has anyone removed the self centring springs from a yak 52 ?,
if so is it as easy as removing the complete "Spring units" or do they have to
be removed disassembled and the springs removed and then reinstalled ?
How is the elevator and aileron stops effected?
Chris Abbott
Sent from my iPad
> On 26 Jan 2016, at 4:19 AM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitterlich@navy.mil>
wrote:
>
>
> The M-14 injects compressed air into each cylinder for starting. Replace that
compressed air with pure oxygen and inject that into the engines cylinders,
add gasoline and a spark, and you are looking at a bomb, make no mistake.
In addition, the air system in the aircraft usually has a mixture of oils and
other "petroleum products" coating the inside of everything, tubes, tanks, actuators,
you name it. Fill the air tanks with oxygen and when you open the main
valve it goes everywhere. Inside of fittings and pipes, actuators, you name
it. You have now taken your whole aircraft and turned it into a potential
bomb just waiting for a spark.
>
> The only reason I am writing this long drawn out comment is that this topic is
being treated a little bit too casually for my sometimes "over-reacting" self!
:-)
>
> Not only "NO", but *****HELL NO !!!!****** Don't ever even *THINK* of filling
the air tanks in these aircraft with pure Oxygen, no matter WHAT the circumstance!
*EVER*
>
> And has been mentioned .... it has been done, and the whole thing blew up.
>
> On top of that, if anyone got hurt during such a process, "Criminal Negligence"
comes to mind. OMG!
>
> Mark
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of jlpartington@reagan.com
> Sent: Monday, January 25, 2016 11:52 AM
> To: yak-list@matronics.com
> Subject: [Non-DoD Source] Yak-List: Re: Yak-List: Air charging valve?
>
> most places that have oxygen should have nitrogen, cheaper and less likely to
cause problems with much oxygen around in case of fire.
>
>
>
> -----Original Message-----
> From: "William Halverson" <william@netpros.net>
> Sent: Monday, 25 January, 2016 10:33am
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Air charging valve?
>
>
>
> Not a good idea ...
>
> Typos courtesy of Siri
>
> On Jan 25, 2016, at 09:14, John B <jbsoar@gmail.com> wrote:
>
>
>
> Is it possible, or even advisable, to charge the air system with oxygen?
The high-pressure Schreader valve might allow this to be done, if one was stuck
at an airport with no SCUBA tank available.
> Thanks!
>
> On Mon, Jan 25, 2016 at 6:57 AM, George S. Coy <george.coy@gmail.com> wrote:
>
>
> There is a high pressure version typically used on Cessna nose struts
and Piper main struts The Cessna unit is S1827-1
>
> George
>
>
>
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode
> Sent: Monday, January 25, 2016 4:06 AM
> To: yak-list@matronics.com
> Subject: RE: Yak-List: Air charging valve?
>
>
>
> I know that a number of people do use the Schrader valve, but I have always
been concerned since the normal operating pressure is up to 5 bar (that
is for automotive tires), and in our air systems the pressure can be over 50 bar!
>
>
>
> Richard Goode
>
>
>
> Rhodds Farm
>
> Lyonshall
>
> Hereford
>
> HR5 3LW
>
> United Kingdom
>
> Tel: +94 (0) 81 241 5137 (Sri Lanka)
>
> Tel: +44 (0) 1544 340120 <tel:%2B44%20%280%29%201544%20340120>
>
> Fax: +44 (0) 1544 340129 <tel:%2B44%20%280%29%201544%20340129>
>
> www.russianaeros.com
>
> Im currently in Sri Lanka but this Mail is working,and my local phone
is +94 779 132 160 <tel:%2B94%20779%20132%20160> .
>
>
>
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of John B
> Sent: Monday, January 25, 2016 1:54 PM
> To: Yak-List Digest Server
> Subject: Yak-List: Air charging valve?
>
>
>
> What valve are most folks using on the air bottle?
>
> There seems to be a Russian valve, and sometimes this is removed an a
shreader valve is installed. Spelled correctly?
>
> Thank you!
>
>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner <http://www.mailscanner.info/> , and is
> believed to be clean.
>
>
>
>
>
>
>
>
>
>
>
>
>
Message 16
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| Subject: | Re: Air charging valve? |
Pure oxygen under high pressure will spontaneously combust when exposed to grease
and oils without any other source of ignition.
When we replenish aircraft oxygen systems at work (I am an Aircraft Engineer) we
make sure we have clean hands, clean overalls and we use a dedicated set of
clean tools that are only used on oxygen systems. Seriously guys, yes you are
sitting in a room full of it, but under high pressure oxygen is lethal. To relate
this back to the topic on hand, I will put it bluntly; ONLY FILL YOUR YAK
AIR SYSTEM WITH OXYGEN IF YOU WANT TO DIE!!
Schrader valves are commonly used on commercial aircraft for applications far exceeding the pressures we are talking about here, but they are these type: https://www.schraderinternational.com/Products/Product-Folder/NA-High-Pressure-Valves-and-Connectors?sc_lang=en-US-AP
My question is, what is wrong with the Russian type os fitting that comes fitted
to the aircraft as standard? I personally think the design is very clever and
reliable. I looked at getting some machined up a while ago and the price was
very reasonable at $100 or so each. As it happened, I was given one, but if
enough people want one, I will get some made.
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=452269#452269
Message 17
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| Subject: | Re: Air charging valve? |
I can confirm that! If I am not mistaken this is what happened a couple of
years back in Belgium: on a ferry flight a Yak52 arrived on a small airfield
in Belgium. After staying overnight and not having closed the main valve all
air was lost from the system. Since there was nothing else available than a
bottle with oxygen (for welding purposes) the pilot decided to fill the
system with this pure oxygen.
As soon as he hit the start button the whole plane exploded, that is all
tubing, actuators the whole lot was blown up. Result: a big bang, a fully
lost Yak52 and a bended ego....
Moral: never, never use pure oxygen!
Fly safe!
Hans O.
PH-YAK
Op 25-01-16 21:08, Looigi <cdoburton@gmail.com> schreef:
>
> Pure oxygen under high pressure will spontaneously combust when exposed to
> grease and oils without any other source of ignition.
>
> When we replenish aircraft oxygen systems at work (I am an Aircraft Engineer)
> we make sure we have clean hands, clean overalls and we use a dedicated set of
> clean tools that are only used on oxygen systems. Seriously guys, yes you are
> sitting in a room full of it, but under high pressure oxygen is lethal. To
> relate this back to the topic on hand, I will put it bluntly; ONLY FILL YOUR
> YAK AIR SYSTEM WITH OXYGEN IF YOU WANT TO DIE!!
>
> Schrader valves are commonly used on commercial aircraft for applications far
> exceeding the pressures we are talking about here, but they are these type:
> https://www.schraderinternational.com/Products/Product-Folder/NA-High-Pressure
> -Valves-and-Connectors?sc_lang=en-US-AP
>
> My question is, what is wrong with the Russian type os fitting that comes
> fitted to the aircraft as standard? I personally think the design is very
> clever and reliable. I looked at getting some machined up a while ago and the
> price was very reasonable at $100 or so each. As it happened, I was given
> one, but if enough people want one, I will get some made.
>
> Chris
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=452269#452269
>
>
>
>
>
>
>
>
>
>
Message 18
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| Subject: | Re: great video on radial operation |
Cool video, thanks for the link Doug!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=452273#452273
Message 19
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| Subject: | Re: Air charging valve? |
Air pressure inlet questions.
This thread is getting quite interesting, and I thank all of you for your
contributions. There are tens of thousands of hours of experience on this
forum, and it is nice that this knowledge is being shared.
Most of twenty years ago, I got a ride in a CJ-6. Of course, I squeezed
the bicycle brake handle that was mounted on the control stick, and was
rewarded with a whoosh of air, as the brakes cycled. Interesting. The
engine was easy to start, and the airplane flew well. I casually wondered
why Western airplanes didn't use a similar air starting system.
Most of five years ago, at the Casa Grande airport in Arizona, I spoke with
a foreign pilot who was ferrying a Sukhoi. He had stopped for fuel, and
then ran the airplane out of air while trying to start it. He was in luck,
as, at the time, there was a scuba diving school in town that was open.
Somebody took him to the scuba store, and, after messing around with a
scuba tank, he started the engine and departed.
During the two hour sit in the pilot's lounge, I learned that oxygen
couldn't be used, as it created an explosive mixture, and I was told that
nitrogen wouldn't work, as nitrogen would tend to discourage combustion.
Now, after buying a Yak 55M, I'd like to operate the airplane safely, and
in a reliable manner. No Oxygen, for obvious reasons. I did not know that
Nitrogen could be used. The Yak I bought has the original Russian quarter
turn fitting behind the wing on the left side of the fuselage. This past
weekend, I looked at a CJ-6 that had a similar fitting, except that someone
had modified it with the installation of a Schreader valve, presumably of
the high-pressure type. The owner had a scuba tank in his hangar with the
brass thread-on Schreader valve attached via a hose. This set-up might
provide two advantages: 1. If one gets stuck away from one's own scuba
tank, they might get their airplane started via a borrowed Nitrogen bottle,
which is common at most sizable airports. 2. The original Russian fitting
has a dust cap that is held on with a cable lanyard. With a Schreader
valve, one wouldn't have to use, and leave off, this cap. Thus far, the
original Russian set-up has been working fine.
Folks, if my thinking is defective, please educate me. I appreciate your
feedback!
John B
Phoenix, AZ
On Mon, Jan 25, 2016 at 1:08 PM, Looigi <cdoburton@gmail.com> wrote:
>
> Pure oxygen under high pressure will spontaneously combust when exposed to
> grease and oils without any other source of ignition.
>
> When we replenish aircraft oxygen systems at work (I am an Aircraft
> Engineer) we make sure we have clean hands, clean overalls and we use a
> dedicated set of clean tools that are only used on oxygen systems.
> Seriously guys, yes you are sitting in a room full of it, but under high
> pressure oxygen is lethal. To relate this back to the topic on hand, I
> will put it bluntly; ONLY FILL YOUR YAK AIR SYSTEM WITH OXYGEN IF YOU WANT
> TO DIE!!
>
> Schrader valves are commonly used on commercial aircraft for applications
> far exceeding the pressures we are talking about here, but they are these
> type:
> https://www.schraderinternational.com/Products/Product-Folder/NA-High-Pressure-Valves-and-Connectors?sc_lang=en-US-AP
>
> My question is, what is wrong with the Russian type os fitting that comes
> fitted to the aircraft as standard? I personally think the design is very
> clever and reliable. I looked at getting some machined up a while ago and
> the price was very reasonable at $100 or so each. As it happened, I was
> given one, but if enough people want one, I will get some made.
>
> Chris
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=452269#452269
>
>
Message 20
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| Subject: | Re: Air charging valve? |
Oxygen not no but Hell No. Unless you have a death wish. Light off a cylinde
r filled with O2 in the air start lines with a push of the shower of sparks a
nd watch the explosions begin. For some nitrogen has worked but it will be d
iluted out after the compressor begins recharging the system.
Sent from my iPad
> On Jan 25, 2016, at 8:14 AM, John B <jbsoar@gmail.com> wrote:
>
> Is it possible, or even advisable, to charge the air system with oxygen? T
he high-pressure Schreader valve might allow this to be done, if one was stu
ck at an airport with no SCUBA tank available.
> Thanks!
>
>> On Mon, Jan 25, 2016 at 6:57 AM, George S. Coy <george.coy@gmail.com> wro
te:
>> There is a high pressure version typically used on Cessna nose struts and
Piper main struts The Cessna unit is S1827-1
>>
>> George
>>
>>
>>
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
atronics.com] On Behalf Of Richard Goode
>> Sent: Monday, January 25, 2016 4:06 AM
>> To: yak-list@matronics.com
>> Subject: RE: Yak-List: Air charging valve?
>>
>>
>>
>> I know that a number of people do use the Schrader valve, but I have alwa
ys been concerned since the normal operating pressure is up to 5 bar (that i
s for automotive tires), and in our air systems the pressure can be over 50 b
ar!
>>
>>
>>
>> Richard Goode
>>
>>
>>
>> Rhodds Farm
>>
>> Lyonshall
>>
>> Hereford
>>
>> HR5 3LW
>>
>> United Kingdom
>>
>> Tel: +94 (0) 81 241 5137 (Sri Lanka)
>>
>> Tel: +44 (0) 1544 340120
>>
>> Fax: +44 (0) 1544 340129
>>
>> www.russianaeros.com
>>
>> I=99m currently in Sri Lanka but this Mail is working,and my local p
hone is +94 779 132 160.
>>
>>
>>
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
atronics.com] On Behalf Of John B
>> Sent: Monday, January 25, 2016 1:54 PM
>> To: Yak-List Digest Server
>> Subject: Yak-List: Air charging valve?
>>
>>
>>
>> What valve are most folks using on the air bottle?
>>
>> There seems to be a Russian valve, and sometimes this is removed an a shr
eader valve is installed. Spelled correctly?
>>
>> Thank you!
>>
>>
>> --
>> This message has been scanned for viruses and
>> dangerous content by MailScanner, and is
>> believed to be clean.
>>
>
Message 21
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| Subject: | Re: Air charging valve? |
The pictures posted at the time were impressive. Do not remember did the wayward
soul survive?
Doc
Sent from my iPad
> On Jan 25, 2016, at 3:04 PM, Hans Oortman <pa3arw@ziggo.nl> wrote:
>
>
> I can confirm that! If I am not mistaken this is what happened a couple of
> years back in Belgium: on a ferry flight a Yak52 arrived on a small airfield
> in Belgium. After staying overnight and not having closed the main valve all
> air was lost from the system. Since there was nothing else available than a
> bottle with oxygen (for welding purposes) the pilot decided to fill the
> system with this pure oxygen.
> As soon as he hit the start button the whole plane exploded, that is all
> tubing, actuators the whole lot was blown up. Result: a big bang, a fully
> lost Yak52 and a bended ego....
>
> Moral: never, never use pure oxygen!
>
> Fly safe!
>
> Hans O.
> PH-YAK
>
> Op 25-01-16 21:08, Looigi <cdoburton@gmail.com> schreef:
>
>>
>> Pure oxygen under high pressure will spontaneously combust when exposed to
>> grease and oils without any other source of ignition.
>>
>> When we replenish aircraft oxygen systems at work (I am an Aircraft Engineer)
>> we make sure we have clean hands, clean overalls and we use a dedicated set
of
>> clean tools that are only used on oxygen systems. Seriously guys, yes you are
>> sitting in a room full of it, but under high pressure oxygen is lethal. To
>> relate this back to the topic on hand, I will put it bluntly; ONLY FILL YOUR
>> YAK AIR SYSTEM WITH OXYGEN IF YOU WANT TO DIE!!
>>
>> Schrader valves are commonly used on commercial aircraft for applications far
>> exceeding the pressures we are talking about here, but they are these type:
>> https://www.schraderinternational.com/Products/Product-Folder/NA-High-Pressure
>> -Valves-and-Connectors?sc_lang=en-US-AP
>>
>> My question is, what is wrong with the Russian type os fitting that comes
>> fitted to the aircraft as standard? I personally think the design is very
>> clever and reliable. I looked at getting some machined up a while ago and the
>> price was very reasonable at $100 or so each. As it happened, I was given
>> one, but if enough people want one, I will get some made.
>>
>> Chris
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=452269#452269
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
>
Message 22
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| Subject: | Re: Air charging valve? |
Nobody was hurt.
But the plane was almost a total loss.
Big holes in the wings in the neighborhood of the gear actuators and the
fuselage had many small holes at one side as if it was fired upon with a
machine gun.
The Yak 52 has been rebuilt by Termikas and is in perfect shape again.
Jan
On 26/01/16 05:34, "Roger Kemp" <owner-yak-list-server@matronics.com on
behalf of f16viperdoc@me.com> wrote:
>
>The pictures posted at the time were impressive. Do not remember did the
>wayward soul survive?
>Doc
>
>Sent from my iPad
>
>> On Jan 25, 2016, at 3:04 PM, Hans Oortman <pa3arw@ziggo.nl> wrote:
>>
>>
>> I can confirm that! If I am not mistaken this is what happened a couple
>>of
>> years back in Belgium: on a ferry flight a Yak52 arrived on a small
>>airfield
>> in Belgium. After staying overnight and not having closed the main
>>valve all
>> air was lost from the system. Since there was nothing else available
>>than a
>> bottle with oxygen (for welding purposes) the pilot decided to fill the
>> system with this pure oxygen.
>> As soon as he hit the start button the whole plane exploded, that is all
>> tubing, actuators the whole lot was blown up. Result: a big bang, a
>>fully
>> lost Yak52 and a bended ego....
>>
>> Moral: never, never use pure oxygen!
>>
>> Fly safe!
>>
>> Hans O.
>> PH-YAK
>>
>> Op 25-01-16 21:08, Looigi <cdoburton@gmail.com> schreef:
>>
>>>
>>> Pure oxygen under high pressure will spontaneously combust when
>>>exposed to
>>> grease and oils without any other source of ignition.
>>>
>>> When we replenish aircraft oxygen systems at work (I am an Aircraft
>>>Engineer)
>>> we make sure we have clean hands, clean overalls and we use a
>>>dedicated set of
>>> clean tools that are only used on oxygen systems. Seriously guys, yes
>>>you are
>>> sitting in a room full of it, but under high pressure oxygen is
>>>lethal. To
>>> relate this back to the topic on hand, I will put it bluntly; ONLY
>>>FILL YOUR
>>> YAK AIR SYSTEM WITH OXYGEN IF YOU WANT TO DIE!!
>>>
>>> Schrader valves are commonly used on commercial aircraft for
>>>applications far
>>> exceeding the pressures we are talking about here, but they are these
>>>type:
>>>
>>>https://www.schraderinternational.com/Products/Product-Folder/NA-High-Pr
>>>essure
>>> -Valves-and-Connectors?sc_lang=en-US-AP
>>>
>>> My question is, what is wrong with the Russian type os fitting that
>>>comes
>>> fitted to the aircraft as standard? I personally think the design is
>>>very
>>> clever and reliable. I looked at getting some machined up a while ago
>>>and the
>>> price was very reasonable at $100 or so each. As it happened, I was
>>>given
>>> one, but if enough people want one, I will get some made.
>>>
>>> Chris
>>>
>>>
>>>
>>>
>>> Read this topic online here:
>>>
>>> http://forums.matronics.com/viewtopic.php?p=452269#452269
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>
>
Message 23
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| Subject: | Re: Air charging valve? |
Sometimes starting up does work with nitrogen.
I=B9ve done it several times when we ran out of industrial-compressed air and
scuba-bottles empty.
Jan
From: <owner-yak-list-server@matronics.com> on behalf of John B
<jbsoar@gmail.com>
Subject: Re: Yak-List: Re: Air charging valve?
Air pressure inlet questions.
This thread is getting quite interesting, and I thank all of you for your
contributions. There are tens of thousands of hours of experience on this
forum, and it is nice that this knowledge is being shared.
Most of twenty years ago, I got a ride in a CJ-6. Of course, I squeezed th
e
bicycle brake handle that was mounted on the control stick, and was rewarde
d
with a whoosh of air, as the brakes cycled. Interesting. The engine was
easy to start, and the airplane flew well. I casually wondered why Western
airplanes didn't use a similar air starting system.
Most of five years ago, at the Casa Grande airport in Arizona, I spoke with
a foreign pilot who was ferrying a Sukhoi. He had stopped for fuel, and
then ran the airplane out of air while trying to start it. He was in luck,
as, at the time, there was a scuba diving school in town that was open.
Somebody took him to the scuba store, and, after messing around with a scub
a
tank, he started the engine and departed.
During the two hour sit in the pilot's lounge, I learned that oxygen
couldn't be used, as it created an explosive mixture, and I was told that
nitrogen wouldn't work, as nitrogen would tend to discourage combustion.
Now, after buying a Yak 55M, I'd like to operate the airplane safely, and i
n
a reliable manner. No Oxygen, for obvious reasons. I did not know that
Nitrogen could be used. The Yak I bought has the original Russian quarter
turn fitting behind the wing on the left side of the fuselage. This past
weekend, I looked at a CJ-6 that had a similar fitting, except that someone
had modified it with the installation of a Schreader valve, presumably of
the high-pressure type. The owner had a scuba tank in his hangar with the
brass thread-on Schreader valve attached via a hose. This set-up might
provide two advantages: 1. If one gets stuck away from one's own scuba
tank, they might get their airplane started via a borrowed Nitrogen bottle,
which is common at most sizable airports. 2. The original Russian fitting
has a dust cap that is held on with a cable lanyard. With a Schreader
valve, one wouldn't have to use, and leave off, this cap. Thus far, the
original Russian set-up has been working fine.
Folks, if my thinking is defective, please educate me. I appreciate your
feedback!
John B
Phoenix, AZ
On Mon, Jan 25, 2016 at 1:08 PM, Looigi <cdoburton@gmail.com> wrote:
>
> Pure oxygen under high pressure will spontaneously combust when exposed t
o
> grease and oils without any other source of ignition.
>
> When we replenish aircraft oxygen systems at work (I am an Aircraft Engin
eer)
> we make sure we have clean hands, clean overalls and we use a dedicated s
et of
> clean tools that are only used on oxygen systems. Seriously guys, yes yo
u are
> sitting in a room full of it, but under high pressure oxygen is lethal.
To
> relate this back to the topic on hand, I will put it bluntly; ONLY FILL Y
OUR
> YAK AIR SYSTEM WITH OXYGEN IF YOU WANT TO DIE!!
>
> Schrader valves are commonly used on commercial aircraft for applications
far
> exceeding the pressures we are talking about here, but they are these typ
e:
> https://www.schraderinternational.com/Products/Product-Folder/NA-High-Pre
ssure
> -Valves-and-Connectors?sc_lang=en-US-AP
>
> My question is, what is wrong with the Russian type os fitting that comes
> fitted to the aircraft as standard? I personally think the design is ver
y
> clever and reliable. I looked at getting some machined up a while ago an
d the
> price was very reasonable at $100 or so each. As it happened, I was give
n
> one, but if enough people want one, I will get some made.
>
> Chris
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=452269#452269
>
>
>
>
>
>
>
> ==========
> br> fts!)
> r> > w.buildersbooks.com" rel="noreferrer"
> target="_blank">www.buildersbooks.com
> rel="noreferrer" target="_blank">http://www.matronics.com/contribution
> -Matt Dralle, List Admin.
> ==========
> List" rel="noreferrer"
> target="_blank">http://www.matronics.com/Navigator?Yak-List
> ==========
> FORUMS -
> eferrer" target="_blank">http://forums.matronics.com
> ==========
> b Site -
> -Matt Dralle, List Admin.
> rel="noreferrer" target="_blank">http://www.matronics.com/contribution
> ==========
>
>
>
Message 24
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| Subject: | Re: Air charging valve? |
I forgot to mention that the other disadvantage of a schrader valve is that you
need spanners to operate it. The quarter turn Russian one, you don't!
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=452289#452289
Message 25
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| Subject: | Re: Air charging valve? |
Spanners? Doesn't the Schrader valve thread on with a knurled nut? The
yellow-painted brass cap comes off with a 3/8 wrench, as I recall. Or am I
confused again?
john b
On Mon, Jan 25, 2016 at 10:30 PM, Looigi <cdoburton@gmail.com> wrote:
>
> I forgot to mention that the other disadvantage of a schrader valve is
> that you need spanners to operate it. The quarter turn Russian one, you
> don't!
>
> Chris
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=452289#452289
>
>
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