Today's Message Index:
----------------------
1. 03:38 AM - Re: Yak-List Digest: 2 Msgs - 08/19/17 (Dr. Robert Schroeder)
2. 03:38 AM - Re: Yak-List Digest: 2 Msgs - 08/19/17 (Dr. Robert Schroeder)
3. 04:29 AM - Re: gear retraction problem (Pedro Cerveira Pinto)
4. 07:53 AM - Re: gear retraction problem (A. Dennis Savarese)
5. 01:16 PM - Re: Yak 18T Manuals (fishface68)
Message 1
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| Subject: | RE: Yak-List Digest: 2 Msgs - 08/19/17 |
Bruno,
Like Justin, I had the same issue...the check valve between the supply air and
the emergency bottle was the problem.
If that's the problem, then your other check valves are probably also corroded.
Our Dear Leader, Doug Sapp can magically make this all better. Without him. I would
never be flying!
BTW, another of our CJ/Yak mensches, Craig Payne, has a book due out soon on the
trials and tribulations of CJ/ Yak pneumatic systems.
This is not one of those "Heard on the Street" rumors. Craig shared this with me
at OSH. Sadly he didn't ask me for help on crafting the title on this manual.
In the airplane world, this could have gone in many directions..with my help probably
not the right one.
Best of luck...remember the spitter and ALWAYS blow down after each flight.
While your at it, do you have a SS filter body? No...and extra dessicant? No....Hello
Comrade Dear Leader Sapp!
Thanks again to Craig Payne...your contributions to our community cannot be acknowledged
enough.
Robert Schroeder...
CJ-6 MIC
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Yak-List Digest Server
Sent: Sunday, August 20, 2017 3:05 AM
Subject: Yak-List Digest: 2 Msgs - 08/19/17
*
=================================================
Online Versions of Today's List Digest Archive =================================================
Today's complete Yak-List Digest can also be found in either of the two Web Links
listed below. The .html file includes the Digest formatted in HTML for viewing
with a web browser and features Hyperlinked Indexes and Message Navigation.
The .txt file includes the plain ASCII version of the Yak-List Digest and
can be viewed with a generic text editor such as Notepad or with a web browser.
HTML Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 17-08-19&Archive=Yak
Text Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 17-08-19&Archive=Yak
===============================================
EMail Version of Today's List Digest Archive ===============================================
----------------------------------------------------------
Yak-List Digest Archive
---
Total Messages Posted Sat 08/19/17: 2
----------------------------------------------------------
Today's Message Index:
----------------------
1. 09:01 PM - gear retraction problem (airmanv2)
2. 09:28 PM - Re: gear retraction problem (Justin Drafts)
________________________________ Message 1 _____________________________________
Time: 09:01:07 PM PST US
Subject: Yak-List: gear retraction problem
From: "airmanv2" <bruno.blanchard2@gmail.com>
Hello
yesterday I've intended to make a fly and clean the plane in preparation for Saturday
airshow . ...
I had a major problem with the gear: just after take off it was not possible to
retract.....
Move up the gear handle and only the left green light switch off, and no red light
switch on. the 3 external red gear indicators stay out....
so i moved down the handle and i got the " greens.
the air pressure was enough at 25/30 Atm.
so i move up again the gear handle and nothing happens. 3 greens remains. So i
put the handle on down position and land again without problem.
Guy on the ground reported that they saw the gear retraction non completed after
take off . for them, the main gear only move for about 30 from vertical position
before to come back at vertical position. Because of distance and position
they were unable to give information for the nose gear position .
So what can be done . I can't fly any more with no gear retraction ...
please help
best regards
Bruno
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=471988#471988
________________________________ Message 2 _____________________________________
Time: 09:28:26 PM PST US
From: Justin Drafts <draftsjust417@gmail.com>
Subject: Re: Yak-List: gear retraction problem
Good morning Bruno...
Several years ago I had a very similar problem with my CJ6A, except I
(apparently) had NO movement in my gear when I moved the handle up.
It turns out, the check valve for my emergency gear extension was corroded, and
leaking "down air" from the emergency bottle/supply. This prevented my gear from
coming up.
Installing a new check valve (from Doug Sapp) was not difficult, and the problem
disappeared.
Perhaps this will help?
Justin
N280NC
On Aug 20, 2017 12:08 AM, "airmanv2" <bruno.blanchard2@gmail.com> wrote:
Hello
yesterday I've intended to make a fly and clean the plane in preparation for Saturday
airshow . ...
I had a major problem with the gear: just after take off it was not possible to
retract.....
Move up the gear handle and only the left green light switch off, and no red light
switch on. the 3 external red gear indicators stay out....
so i moved down the handle and i got the " greens.
the air pressure was enough at 25/30 Atm.
so i move up again the gear handle and nothing happens. 3 greens remains.
So i put the handle on down position and land again without problem.
Guy on the ground reported that they saw the gear retraction non completed after
take off . for them, the main gear only move for about 30=C2=B0 from vertical
position before to come back at vertical position. Because of distance and position
they were unable to give information for the nose gear position .
So what can be done . I can't fly any more with no gear retraction ...
please help
best regards
Bruno
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=471988#471988
Message 2
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| Subject: | RE: Yak-List Digest: 2 Msgs - 08/19/17 |
Bruno,
Like Justin, I had the same issue...the check valve between the supply air and
the emergency bottle was the problem.
If that's the problem, then your other check valves are probably also corroded.
Our Dear Leader, Doug Sapp can magically make this all better. Without him. I would
never be flying!
BTW, another of our CJ/Yak mensches, Craig Payne, has a book due out soon on the
trials and tribulations of CJ/ Yak pneumatic systems.
This is not one of those "Heard on the Street" rumors. Craig shared this with me
at OSH. Sadly he didn't ask me for help on crafting the title on this manual.
In the airplane world, this could have gone in many directions..with my help probably
not the right one.
Best of luck...remember the spitter and ALWAYS blow down after each flight.
While your at it, do you have a SS filter body? No...and extra dessicant? No....Hello
Comrade Dear Leader Sapp!
Thanks again to Craig Payne...your contributions to our community cannot be acknowledged
enough.
Robert Schroeder...
CJ-6 MIC
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Yak-List Digest Server
Sent: Sunday, August 20, 2017 3:05 AM
Subject: Yak-List Digest: 2 Msgs - 08/19/17
*
=================================================
Online Versions of Today's List Digest Archive =================================================
Today's complete Yak-List Digest can also be found in either of the two Web Links
listed below. The .html file includes the Digest formatted in HTML for viewing
with a web browser and features Hyperlinked Indexes and Message Navigation.
The .txt file includes the plain ASCII version of the Yak-List Digest and
can be viewed with a generic text editor such as Notepad or with a web browser.
HTML Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 17-08-19&Archive=Yak
Text Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 17-08-19&Archive=Yak
===============================================
EMail Version of Today's List Digest Archive ===============================================
----------------------------------------------------------
Yak-List Digest Archive
---
Total Messages Posted Sat 08/19/17: 2
----------------------------------------------------------
Today's Message Index:
----------------------
1. 09:01 PM - gear retraction problem (airmanv2)
2. 09:28 PM - Re: gear retraction problem (Justin Drafts)
________________________________ Message 1 _____________________________________
Time: 09:01:07 PM PST US
Subject: Yak-List: gear retraction problem
From: "airmanv2" <bruno.blanchard2@gmail.com>
Hello
yesterday I've intended to make a fly and clean the plane in preparation for Saturday
airshow . ...
I had a major problem with the gear: just after take off it was not possible to
retract.....
Move up the gear handle and only the left green light switch off, and no red light
switch on. the 3 external red gear indicators stay out....
so i moved down the handle and i got the " greens.
the air pressure was enough at 25/30 Atm.
so i move up again the gear handle and nothing happens. 3 greens remains. So i
put the handle on down position and land again without problem.
Guy on the ground reported that they saw the gear retraction non completed after
take off . for them, the main gear only move for about 30 from vertical position
before to come back at vertical position. Because of distance and position
they were unable to give information for the nose gear position .
So what can be done . I can't fly any more with no gear retraction ...
please help
best regards
Bruno
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=471988#471988
________________________________ Message 2 _____________________________________
Time: 09:28:26 PM PST US
From: Justin Drafts <draftsjust417@gmail.com>
Subject: Re: Yak-List: gear retraction problem
Good morning Bruno...
Several years ago I had a very similar problem with my CJ6A, except I
(apparently) had NO movement in my gear when I moved the handle up.
It turns out, the check valve for my emergency gear extension was corroded, and
leaking "down air" from the emergency bottle/supply. This prevented my gear from
coming up.
Installing a new check valve (from Doug Sapp) was not difficult, and the problem
disappeared.
Perhaps this will help?
Justin
N280NC
On Aug 20, 2017 12:08 AM, "airmanv2" <bruno.blanchard2@gmail.com> wrote:
Hello
yesterday I've intended to make a fly and clean the plane in preparation for Saturday
airshow . ...
I had a major problem with the gear: just after take off it was not possible to
retract.....
Move up the gear handle and only the left green light switch off, and no red light
switch on. the 3 external red gear indicators stay out....
so i moved down the handle and i got the " greens.
the air pressure was enough at 25/30 Atm.
so i move up again the gear handle and nothing happens. 3 greens remains.
So i put the handle on down position and land again without problem.
Guy on the ground reported that they saw the gear retraction non completed after
take off . for them, the main gear only move for about 30=C2=B0 from vertical
position before to come back at vertical position. Because of distance and position
they were unable to give information for the nose gear position .
So what can be done . I can't fly any more with no gear retraction ...
please help
best regards
Bruno
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=471988#471988
Message 3
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| Subject: | Re: gear retraction problem |
Hi Bruno
Probably you have a air leak somewhere in the system . Probably on gear
handle valve.
Put the airplane on jacks and fill the system with 45 kg/cm2 from a
exterior botlle of air.
Listen to air leaks first. If no leaks heard ..
Test gear.
If all the air in the system goes away and gear not moving completely up,
the gear handle valve need to be fixed.
Cheers
2017-08-20 4:00 GMT+00:00 airmanv2 <bruno.blanchard2@gmail.com>:
>
> Hello
>
>
> yesterday I've intended to make a fly and clean the plane in preparation
> for Saturday airshow . ...
>
> I had a major problem with the gear: just after take off it was not
> possible to retract.....
> Move up the gear handle and only the left green light switch off, and no
> red light switch on. the 3 external red gear indicators stay out....
> so i moved down the handle and i got the " greens.
> the air pressure was enough at 25/30 Atm.
> so i move up again the gear handle and nothing happens. 3 greens remains.
> So i put the handle on down position and land again without problem.
>
> Guy on the ground reported that they saw the gear retraction non complete
d
> after take off . for them, the main gear only move for about 30=C2=B0 fro
m
> vertical position before to come back at vertical position. Because of
> distance and position they were unable to give information for the nose
> gear position .
>
> So what can be done . I can't fly any more with no gear retraction ...
>
> please help
>
> best regards
>
> Bruno
>
> --------
> Fly safe
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=471988#471988
>
>
===========
===========
===========
===========
===========
>
>
--
Pedro Cerveira Pinto
Message 4
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| Subject: | Re: gear retraction problem |
Highly probable it is a bad check valve as previously described.Dennis
From: Pedro Cerveira Pinto <cerveirapinto@gmail.com>
To: yak-list@matronics.com
Sent: Sunday, August 20, 2017 7:33 AM
Subject: Re: Yak-List: gear retraction problem
Hi BrunoProbably you have a air leak somewhere in the system . Probably on
gear handle valve.Put the airplane on jacks and fill the system with 45 kg/
cm2 from a exterior botlle of air.Listen to air leaks first. If no leaks he
ard ..Test gear.=C2-If =C2-all the air in the system goes away and gear
not moving completely up, the gear handle valve need to be fixed.Cheers
2017-08-20 4:00 GMT+00:00 airmanv2 <bruno.blanchard2@gmail.com>:
Hello
yesterday I've intended to make a fly and clean the plane in preparation fo
r Saturday airshow . ...
I had a major problem with the gear: just after take off it was not possibl
e to retract.....
Move up the gear handle=C2- and only the left green light switch off, and
no red light switch on. the 3 external red gear indicators stay out....
so i moved down the handle and i got the " greens.
the air pressure was enough at 25/30 Atm.
so i move up again the gear handle and nothing happens. 3 greens remains. S
o i put the handle on down position and land again without problem.
Guy on the ground reported that they saw the gear retraction non completed
after take off . for them, the main gear only move for about 30=C2=B0 from
vertical position before to come back at vertical position. Because of dist
ance and position they were unable to give information for the nose gear po
sition .
So what can be done . I can't fly any more with no gear retraction ...
please help
best regards
Bruno
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/ viewtopic.php?p=471988#471988
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Message 5
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| Subject: | Re: Yak 18T Manuals |
Richard, that is incredibly kind of you I cannot thank you enough for your help
and generosity with both this and in the past with our Yak52. I will certainly
call the office this will be of enormous help in getting our new Yak 18T back
in the air.
Many thanks
Regards Pat
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=472007#472007
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