Today's Message Index:
----------------------
1. 06:59 AM - Re: Re: No Brakes! (Bill Geipel)
2. 07:03 AM - Re: Re: No Brakes! (A. Dennis Savarese)
3. 08:12 AM - Re: Re: No Brakes! (Roger Kemp MD)
4. 08:52 AM - Re: rear gear valve (Roger Kemp MD)
5. 03:04 PM - Emergency Tank leak? (skidmk)
6. 03:20 PM - Re: Emergency Tank leak? (KingCJ6@aol.com)
7. 07:10 PM - Re: Emergency Tank leak? (cjpilot710@aol.com)
8. 07:16 PM - Re: Emergency Tank leak? (mike holoman)
9. 07:33 PM - Re: Emergency Tank leak? (doug sapp)
10. 07:58 PM - Re: Emergency Tank leak? (Walter Lannon)
11. 08:13 PM - Re: Emergency Tank leak? (skidmk)
12. 09:34 PM - Re: Re: Emergency Tank leak? (Walter Lannon)
Message 1
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Thank you. I am on my way to the flyin' yard to pull the wheels off. We'll
see. Are drums available?
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of mikspin
Sent: Friday, August 22, 2008 12:40 AM
Subject: Yak-List: Re: No Brakes!
I have replaced a set of drums on two Yak 52's where fade was a problem. It
turns out that the wall thickness (suprisingly worn despite several annuals)
of the drum was reduced to the point that the normal rate of heat
absorption/dissipation couldn't take place during anything more than light
braking and low power, level surface taxiing.
Fresh drums (and pads) resulted in no fade during the typical scenarios such
as downwind/crosswind taxi, short turnoff (I agree about letting the
airplane roll out if you can).
In both cases, the pilots commented that it felt like a completely different
airplane after the drum and pad change, even after a period of use where you
would think a glaze would set up on the drums.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=199884#199884
Message 2
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Most definitely drums are available. Contact Doug Sapp. He typically has
them on the shelf.
Dennis
----- Original Message -----
From: "Bill Geipel" <czech6@mesanetworks.net>
Sent: Friday, August 22, 2008 9:00 AM
Subject: RE: Yak-List: Re: No Brakes!
>
> Thank you. I am on my way to the flyin' yard to pull the wheels off. We'll
> see. Are drums available?
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of mikspin
> Sent: Friday, August 22, 2008 12:40 AM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: No Brakes!
>
>
> I have replaced a set of drums on two Yak 52's where fade was a problem.
> It
> turns out that the wall thickness (suprisingly worn despite several
> annuals)
> of the drum was reduced to the point that the normal rate of heat
> absorption/dissipation couldn't take place during anything more than light
> braking and low power, level surface taxiing.
> Fresh drums (and pads) resulted in no fade during the typical scenarios
> such
> as downwind/crosswind taxi, short turnoff (I agree about letting the
> airplane roll out if you can).
> In both cases, the pilots commented that it felt like a completely
> different
> airplane after the drum and pad change, even after a period of use where
> you
> would think a glaze would set up on the drums.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=199884#199884
>
>
>
Message 3
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Yes, Contact Doug Sapp.
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bill Geipel
Sent: Friday, August 22, 2008 9:00 AM
Subject: RE: Yak-List: Re: No Brakes!
Thank you. I am on my way to the flyin' yard to pull the wheels off. We'll
see. Are drums available?
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of mikspin
Sent: Friday, August 22, 2008 12:40 AM
Subject: Yak-List: Re: No Brakes!
I have replaced a set of drums on two Yak 52's where fade was a problem. It
turns out that the wall thickness (suprisingly worn despite several annuals)
of the drum was reduced to the point that the normal rate of heat
absorption/dissipation couldn't take place during anything more than light
braking and low power, level surface taxiing.
Fresh drums (and pads) resulted in no fade during the typical scenarios such
as downwind/crosswind taxi, short turnoff (I agree about letting the
airplane roll out if you can).
In both cases, the pilots commented that it felt like a completely different
airplane after the drum and pad change, even after a period of use where you
would think a glaze would set up on the drums.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=199884#199884
Message 4
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Try Steve Culp at 318-222-0850.
Doc
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Jim
Sent: Friday, August 22, 2008 12:10 AM
Subject: Re: Yak-List: rear gear valve
Yes I have one.
Jim Selby
----- Original Message -----
From: Jon Boede <mailto:jonboede@hotmail.com>
Sent: Thursday, August 21, 2008 9:26 PM
Subject: Yak-List: rear gear valve
Anybody have a five-port rear gear selector valve in stock? Mine is
whistling to the point where I'm not flyin'. :-(
Doug and Jill are both out... although I'm sending some old valves to Jill
for resurfacing.
Thanks,
Jon
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/
Navigator?Yak-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 5
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| Subject: | Emergency Tank leak? |
Hello all,,,
went out to the cj the other day and the emerg tank is at zero. The main tank
has 40atms... but bleeds down fairly rapidly once I open it and if the engine
is not running.
With the engine running, I easily pump up to 60 in the main, and almost 70 in the
emerg tank.
Ideas as to where the emerg tank maybe leaking?
thanks
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=199982#199982
Message 6
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| Subject: | Re: Emergency Tank leak? |
If it's not the tank, lines to/from, valve etc., check the gauge. Our's
had a leak where the inlet fitting attached to the back some years ago.
In a message dated 8/22/2008 3:04:34 P.M. Pacific Daylight Time,
bourgem@cia.com writes:
--> Yak-List message posted by: "skidmk" <bourgem@cia.com>
Hello all,,,
went out to the cj the other day and the emerg tank is at zero. The main
tank has 40atms... but bleeds down fairly rapidly once I open it and if the
engine is not running.
With the engine running, I easily pump up to 60 in the main, and almost 70
in the emerg tank.
Ideas as to where the emerg tank maybe leaking?
thanks
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=199982#199982
**************It's only a deal if it's where you want to go. Find your travel
deal here.
(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047)
Message 7
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| Subject: | Re: Emergency Tank leak? |
The gage is one spot but there is also a check valve on the forward fire
wall that could be leaking. The rubber pad on the end of the brass cup can
become hard and crack. With your compressor working fine and building up
pressure though that check valve but once your compressor shut down, the air is
held
in the emerg tank by that check valve.
In a message dated 8/22/2008 6:21:54 P.M. Eastern Daylight Time,
KingCJ6@aol.com writes:
If it's not the tank, lines to/from, valve etc., check the gauge. Our's
had a leak where the inlet fitting attached to the back some years ago.
In a message dated 8/22/2008 3:04:34 P.M. Pacific Daylight Time,
bourgem@cia.com writes:
--> Yak-List message posted by: "skidmk" <bourgem@cia.com>
Hello all,,,
went out to the cj the other day and the emerg tank is at zero. The main
tank has 40atms... but bleeds down fairly rapidly once I open it and if the
engine is not running.
With the engine running, I easily pump up to 60 in the main, and almost 70
in the emerg tank.
Ideas as to where the emerg tank maybe leaking?
thanks
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=199982#199982
____________________________________
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(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047) .
(http://www.matronics.com/Navigator?Yak-List)
(http://www.matronics.com/contribution)
**************It's only a deal if it's where you want to go. Find your travel
deal here.
(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047)
Message 8
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| Subject: | Emergency Tank leak? |
If th CJ is the same piping as the Yak=2C and if the leak is not at or in t
he pressure gauges (front or back) then it is most likely the seal in the m
ain fill check valve. Regards=2C Mike
From: KingCJ6@aol.comDate: Fri=2C 22 Aug 2008 18:19:51 -0400Subject: Re: Ya
k-List: Emergency Tank leak?To: yak-list@matronics.com
If it's not the tank=2C lines to/from=2C valve etc.=2C check the gauge. O
ur's had a leak where the inlet fitting attached to the back some years ago
.
In a message dated 8/22/2008 3:04:34 P.M. Pacific Daylight Time=2C bourgem@
cia.com writes:
=2Cwent out to the cj the other day and the emerg tank is at zero. The mai
n tank has 40atms... but bleeds down fairly rapidly once I open it and if t
he engine is not running.With the engine running=2C I easily pump up to 60
in the main=2C and almost 70 in the emerg tank.Ideas as to where the emerg
tank maybe leaking?thanks--------Mike "=3BSkidmk"=3B BourgetOttawa
=2C OntarioRead this topic online here:http://forums.matronics.com/viewtopi
c.php?p=199982#199982
It's only a deal if it's where you want to go. Find your travel deal here.
_________________________________________________________________
Get thousands of games on your PC=2C your mobile phone=2C and the web with
Windows=AE.
Message 9
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| Subject: | Re: Emergency Tank leak? |
Mike your scaring the hell out of me, if your gauges are correct your really
tempting fate. Just so it's really clear 1ATM is equal to 14.6596PSI.
14.6596 X 60atm = 879 PSI
70atm=1026 PSI.
Normal pop off setting is 45ATMS which is 659.68 PSI. So if your guages
are correct your driving a bomb around! Check out the location of the tank
and just imagine what would happen it it exploded.
It's no wonder your devoloping leaks when your pushing your air system to
those numbers. I am sure it's leaking in places which are going to be a
bugger to find, but those leaks may be the only thing saving your
life! Your playing with a bomb here, and when it finally reaches is
bursting point it will not be pretty. Have you seen the photo of the Yak 50
whose air tank tank exploded (on the ground) under "normal" pressure (45
ATMS)? Get your guages checked, once you know how they are reading reduce
your pop off pressure to 45 to 50 ATMS. Get a ultra sonic leak dectector
and solve the leak problems. If in fact you are running at those
pressures and you continue to run the aircraft, you will, sooner than later
have a huge problem. Rather it will be a catastrophic failure of one of the
tanks or just a line, it is impossible to say, but it WILL happen if you
don't back off the pressure.
Good luck,
On Fri, Aug 22, 2008 at 3:03 PM, skidmk <bourgem@cia.com> wrote:
>
> Hello all,,,
>
> went out to the cj the other day and the emerg tank is at zero. The main
> tank has 40atms... but bleeds down fairly rapidly once I open it and if the
> engine is not running.
>
> With the engine running, I easily pump up to 60 in the main, and almost 70
> in the emerg tank.
>
> Ideas as to where the emerg tank maybe leaking?
>
> thanks
>
> --------
> Mike "Skidmk" Bourget
> Ottawa, Ontario
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=199982#199982
>
>
--
Always Yakin,
Doug Sapp
Phone 509-826-4610
Fax 509-826-3644
Message 10
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| Subject: | Re: Emergency Tank leak? |
Hi Mike;
I see Doug has already responded to your post. I sincerely hope you have
read that.
Also assume you have the Tech Specs Manual. There is an air system schematic
there that you will need. You should not be flying the aircraft until you
have done a complete inspection of the entire system, replaced any U/S
components and reset the press. relief valve to 45 ATM's.
Walt
----- Original Message -----
From: "skidmk" <bourgem@cia.com>
Sent: Friday, August 22, 2008 3:03 PM
Subject: Yak-List: Emergency Tank leak?
>
> Hello all,,,
>
> went out to the cj the other day and the emerg tank is at zero. The main
> tank has 40atms... but bleeds down fairly rapidly once I open it and if
> the engine is not running.
>
> With the engine running, I easily pump up to 60 in the main, and almost 70
> in the emerg tank.
>
> Ideas as to where the emerg tank maybe leaking?
>
> thanks
>
> --------
> Mike "Skidmk" Bourget
> Ottawa, Ontario
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=199982#199982
>
>
>
Message 11
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| Subject: | Re: Emergency Tank leak? |
things that make you go hmmmm... okay... grounded till I fix it. The leak sounds
like its coming from the right side lower console.... maybe at the gauge,,,
a little history,, 83 hours since the annual in April. The check valve on the
firewall was replaced. It was (as per the log) tested and set to 45 atm. Beginning
of May, I flew her to Easton, and saw 60 atm normally (after 45 to 60 minutes
of flight)... I adjusted the check valve to a lower value,,, but has since
climbed again to show 60+ values after 50-60 minutes.
This check valve was new, from Doug I think,, is it possible it was not properly
adjusted?.... How do you adjust,, build up pressure, land adjust etc...? cause
I think that is what was done.
Checking the gauges sounds like a useless endeavor,, both gauges have been registering
the same after flight pressures (emergency gauge)
M
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 0035#200035
Message 12
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| Subject: | Re: Emergency Tank leak? |
How many times have you replaced the water filters in that 83 Hrs.?
Walt
----- Original Message -----
From: "skidmk" <skidmk@gmail.com>
Sent: Friday, August 22, 2008 8:12 PM
Subject: Yak-List: Re: Emergency Tank leak?
>
> things that make you go hmmmm... okay... grounded till I fix it. The leak
> sounds like its coming from the right side lower console.... maybe at the
> gauge,,,
>
> a little history,, 83 hours since the annual in April. The check valve on
> the firewall was replaced. It was (as per the log) tested and set to 45
> atm. Beginning of May, I flew her to Easton, and saw 60 atm normally
> (after 45 to 60 minutes of flight)... I adjusted the check valve to a
> lower value,,, but has since climbed again to show 60+ values after 50-60
> minutes.
>
> This check valve was new, from Doug I think,, is it possible it was not
> properly adjusted?.... How do you adjust,, build up pressure, land adjust
> etc...? cause I think that is what was done.
>
> Checking the gauges sounds like a useless endeavor,, both gauges have been
> registering the same after flight pressures (emergency gauge)
>
> M
>
> --------
> Mike "Skidmk" Bourget
> Ottawa, Ontario
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 0035#200035
>
>
>
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