Today's Message Index:
----------------------
1. 03:16 AM - Re: CJ gear comes down nose first, then mains (JL2A)
2. 03:20 AM - Re: Low Pass Engine Sputter (=?UTF-8?B?SMOldmFyZCBEYWxl?=)
3. 04:32 AM - Re: Low Pass Engine Sputter (A. Dennis Savarese)
4. 05:38 AM - Re: Low Pass Engine Sputter (bmsim)
5. 05:49 AM - Re: . Low Pass Engine Sputter (bmsim)
6. 07:12 AM - Need Emergency Air Bottle (Rico Jaeger)
7. 07:28 AM - Re: Need Emergency Air Bottle (Marcus Bates)
8. 07:55 AM - Re: Need Emergency Air Bottle (doug sapp)
9. 07:56 AM - Re: Need Emergency Air Bottle (Richard Goode)
10. 08:12 AM - Re: Need Emergency Air Bottle (Kevin Pilling)
11. 08:26 AM - Re: Need Emergency Air Bottle (Hank Gibson)
12. 08:39 AM - Re: Need Emergency Air Bottle (Richard Goode)
13. 08:49 AM - Re: Need Emergency Air Bottle (Richard Goode)
14. 09:24 AM - FW: Ignore at your peril (Richard Goode)
15. 09:49 AM - Re: Need Emergency Air Bottle (A. Dennis Savarese)
16. 10:39 AM - Re: Ignore at your peril (HawkerPilot2015)
17. 01:50 PM - Re: Ignore at your peril (jay-dub)
Message 1
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| Subject: | Re: CJ gear comes down nose first, then mains |
thanks all.
I'm not convinced it is simply restrictors - but happy to go with the simplest
answer!
My doubts come from:
A) Did not see any. The entire MLG air lines from rear cockpit outwards was replaced.
Many small items were dropped (those tiny CJ spring washers!) but all found.
Eventually. No restrictors though. The one restrictor found on this aircraft
is in flap system. I will double check if they've been left pressed-on to
the old air lines though.
B) It is not immediately clear to me why it swings its legs out of bed in strange
sequence when flown with gear handle in up, compared to perfect extension when
using the (non-normal) NEUTRAL - UP 2 3 4 - DOWN method.
It seems like it is more related to how LONG the pressure resides in the UP system.
Testing reveals that if you try NEUTRAL - UP 2 3 4 5 6 ... 10 - DOWN it starts
to go out of sequence ('sequence' meaning all three red lights going out together
and red lights coming on together).
One can hear it only takes a few seconds to fully pressurise the UP side - so could
there be a leak somewhere? The longer the handle is left in UP, the more
reluctant the MLGs are to come down at same time as NLG.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=472769#472769
Message 2
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| Subject: | Re: Low Pass Engine Sputter |
Hi,
Interesting subject as on my last display with my Yak 50 had the same
experience. Was to fly a Display to celebrate opening of a new Museum at an
old abandoned WW II German Airstrip here in Norway. After take-off from my
base its only 10 minutes flight time to where the display took place. After
take-off I kept Aerobatic power setting and all the way. Display started
and lasted 10-12 min. On the last "low-pass" 400+ km/t and 200 feet the
engine made a, in my opinion Misfire. I pulled up and gained 1500 feet to
sort the shit out. As I like to see out the cockpit on low passes I did,t
see on the fuel pressure gauges when the "misfired" happened. Did that on
the climb out and all gauges where Normal. Can't remember my Cylinder temp,
but I am sure it was in the green arc, the Gills was fully open and around
10c' outside temp. I circled overhead the old German Airstrip and prepared
an emergency landing if the engine went quiet. It did run stable, but a
little rough so I sat course back home and landed safely. Back at base I
did a leak check on all cylinders, checked for leaks on fuel system,
checked all filters, Have not checked fuel vent yet(shall do that) Since
the ignition system is original I have decide to replace with Auto Ignition
Kit, and new magnetos. For the moment I suspect the ignition to be my
source of wake up during the low-pass:-)
Kind Regards
Havard
Norway
2017-09-09 0:38 GMT+02:00 Adrian Hale <coolade2@gmail.com>:
>
> My Yaks never did this but my good friend had the exact problem you
> describe we were told that 25w60 would cause it-- made no sense to me as an
> engineer but we went back to shell 120 and the problem went away.
>
> Sent from my iPad
>
> > On Sep 8, 2017, at 12:32 PM, Bitterlich, Mark G CIV NAVAIR, WD <
> mark.bitterlich@navy.mil> wrote:
> >
> mark.bitterlich@navy.mil>
> >
> > Oh darn. I'm sorry. The message was from Bill Geipel. Disregard.
> >
> > -----Original Message-----
> > From: Bitterlich, Mark G CIV NAVAIR, WD
> > Sent: Friday, September 08, 2017 1:26 PM
> > To: 'yak-list@matronics.com'
> > Subject: Yak-List: Low Pass Engine Sputter
> >
> > Seriously? What country are you from?
> >
> > http://www.cfinotebook.net/notebook/aircraft-operations/
> approaches/low-approach
> >
> >
> > -----Original Message-----
> > From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@
> matronics.com] On Behalf Of L129bs
> > Sent: Friday, September 08, 2017 12:16 PM
> > To: yak-list@matronics.com
> > Subject: [Non-DoD Source] RE: Yak-List: Low Pass Engine Sputter
> >
> > well, low passes are illegal. So do them. problem solved.
> >
> >
> >
> > Sent from my Samsung Galaxy smartphone.
> >
> >
> >
> > -------- Original message --------
> > From: bmsim <bmsim@hotmail.com>
> > Date:2017/09/08 9:54 AM (GMT-07:00)
> > To: yak-list@matronics.com
> > Cc:
> > Subject: Yak-List: Low Pass Engine Sputter
> >
> >
> >
> >
> >
> >
>
>
Message 3
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| Subject: | Re: Low Pass Engine Sputter |
I suggest possible carburetor icing.=C2- Most of us never consider that p
ossibility.=C2- But it CAN happen even though the window for carb icing w
ith a pressure carb is very small.=C2- Ironically, having experienced the
same symptom twice doing a low pass/fly-by with hard pitch up, I could not
find a single problem with the engine each time.=C2-
Dennis
From: H=C3=A5vard Dale <yaknorway52@gmail.com>
To: yak-list@matronics.com
Sent: Monday, September 11, 2017 6:21 AM
Subject: Re: Yak-List: Low Pass Engine Sputter
Hi,
Interesting subject as on my last display with my Yak 50 had the same exper
ience. Was to fly a Display to celebrate opening of a new Museum at an old
abandoned WW II German Airstrip here in Norway. After take-off from my base
its only 10 minutes flight time to where the display took place. After tak
e-off I kept Aerobatic power setting and all the way. Display started and l
asted 10-12 min. On the last "low-pass" 400+ km/t and 200 feet the engine m
ade a, in my opinion Misfire. I pulled up and gained 1500 feet to sort the
shit out. As I like to see out the cockpit on low passes I did,t see on the
fuel pressure gauges when the "misfired" happened. Did that on the climb o
ut and all gauges where Normal. Can't remember my Cylinder temp, but I am s
ure it was in the green arc, the Gills was fully open and around 10c' outsi
de temp. I circled overhead the old German Airstrip and prepared an emergen
cy landing if the engine went quiet. It did run stable, but a little rough
so I sat course back home and landed safely. Back at base I did a leak chec
k on all cylinders, checked for leaks on fuel system, checked all filters,
Have not checked fuel vent yet(shall do that) Since the ignition system is
original I have decide to replace with Auto Ignition Kit, and new magnetos.
For the moment I suspect the ignition to be my source of wake up during th
e low-pass:-)
Kind RegardsHavardNorway
2017-09-09 0:38 GMT+02:00 Adrian Hale <coolade2@gmail.com>:
My Yaks never did this but my good friend had the exact problem you describ
e we were told that 25w60 would cause it-- made no sense to me as an engine
er but we went back to shell 120 and the problem went away.
Sent from my iPad
> On Sep 8, 2017, at 12:32 PM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitt
erlich@navy.mil> wrote:
>
.bitterlich@navy.mil>
>
> Oh darn.=C2- I'm sorry.=C2- The message was from Bill Geipel.=C2-
=C2-Disregard.
>
> -----Original Message-----
> From: Bitterlich, Mark G CIV NAVAIR, WD
> Sent: Friday, September 08, 2017 1:26 PM
> To: 'yak-list@matronics.com'
> Subject: Yak-List: Low Pass Engine Sputter
>
> Seriously?=C2- =C2-What country are you from?
>
> http://www.cfinotebook.net/ notebook/aircraft-operations/ approaches/low-
approach
>
>
> -----Original Message-----
> From: owner-yak-list-server@ matronics.com [mailto:owner-yak-list-server@
matronics.com] On Behalf Of L129bs
> Sent: Friday, September 08, 2017 12:16 PM
> To: yak-list@matronics.com
> Subject: [Non-DoD Source] RE: Yak-List: Low Pass Engine Sputter
>
> well, low passes are illegal. So do them. problem solved.
>
>
> Sent from my Samsung Galaxy smartphone.
>
>
> -------- Original message --------
> From: bmsim <bmsim@hotmail.com>
> Date:2017/09/08 9:54 AM (GMT-07:00)
> To: yak-list@matronics.com
> Cc:
> Subject: Yak-List: Low Pass Engine Sputter
>
>
==== ====================
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tor?Yak-List
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eferrer" target="_blank">http://forums.matronics.com
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Message 4
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| Subject: | Re: Low Pass Engine Sputter |
Update:
Flew several hours this weekend, no low approaches, and she ran like a top. After
doing a good bit of pattern work to make certain things were stable, I took
her up and put her through the paces - she was very happy about it and purred
along like she should.
Thanks to all that offered suggestions, I'm looking into all of them:
1. Possible icing
2. Oil
3. Sticking valve (add Mystery Oil)
I'll post updates as I have them, but with this hurricane coming in I'm afraid
it may be a bit!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=472773#472773
Message 5
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| Subject: | Re: . Low Pass Engine Sputter |
Luckily my airport loves airplanes and pilots, and we get a lot of transient warbirds
or airshow birds in and out, as well as a good many radial bipes, etc.,
and everyone loves to see them, not bitch at them.
I can say one positive thing these threads have done is change the way I'll make
radio calls in case I have to go around in the future.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=472774#472774
Message 6
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| Subject: | Need Emergency Air Bottle |
Greetings!
I've been living with a leaking emergency air system for a while on my -52.
It used to slowly bleed-off over days, but now it flat-lines within severa
l hours. I've gone through check valves, external fill and emergency air va
lve in rear cockpit - all to no avail. I think the next best guess is a lea
ky bottle. Therefore...does anyone have a spare (new or used) emergency sph
ere for sale? (Ideally that I could "try" first to see if it solves the pro
blem) OR...if you have a different theory, I'm all ears!
Primary system retains full air indefinitely.
2nd big question: Is this an air bottle catastrophic failure waiting to hap
pen if I continue to fill to capacity prior to flight?
On a side note...thoughts and prayers to those of you enduring "The Year Of
The Hurricanes."
Thank you all!
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1969 Cessna 150J ^/---//-X
N61333 //
Hangar #35 / AUW
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
Hangar #21 / AUW
Message 7
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| Subject: | Re: Need Emergency Air Bottle |
Have one for CJ. Same?
Sent from my iPad
> On Sep 11, 2017, at 9:11 AM, Rico Jaeger <rocknpilot@hotmail.com> wrote:
>
> Greetings!
>
>
> I've been living with a leaking emergency air system for a while on my -52
. It used to slowly bleed-off over days, but now it flat-lines within severa
l hours. I've gone through check valves, external fill and emergency air val
ve in rear cockpit - all to no avail. I think the next best guess is a leaky
bottle. Therefore...does anyone have a spare (new or used) emergency sphere
for sale? (Ideally that I could "try" first to see if it solves the problem
) OR...if you have a different theory, I'm all ears!
>
>
> Primary system retains full air indefinitely.
>
>
> 2nd big question: Is this an air bottle catastrophic failure waiting to ha
ppen if I continue to fill to capacity prior to flight?
>
>
> On a side note...thoughts and prayers to those of you enduring "The Year O
f The Hurricanes."
>
>
> Thank you all!
>
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1969 Cessna 150J ^/---//-X
> N61333 //
> Hangar #35 / AUW
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
> Hangar #21 / AUW
>
>
Message 8
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| Subject: | Re: Need Emergency Air Bottle |
Yak and CJ are not the same.
I stock the new stainless steel Yak 52 main and emergency bottles.
They are inspection free because they are stainless steel.
They are heavier because they have a thicker side wall.
Also stock them for the CJ6
Best,
Doug
On Mon, Sep 11, 2017 at 7:26 AM, Marcus Bates <marcusbates@att.net> wrote:
> Have one for CJ. Same?
>
> Sent from my iPad
>
> On Sep 11, 2017, at 9:11 AM, Rico Jaeger <rocknpilot@hotmail.com> wrote:
>
> Greetings!
>
>
> I've been living with a leaking emergency air system for a while on my
> -52. It used to slowly bleed-off over days, but now it flat-lines within
> several hours. I've gone through check valves, external fill and emergency
> air valve in rear cockpit - all to no avail. I think the next best guess is
> a leaky bottle. Therefore...does anyone have a spare (new or used)
> emergency sphere for sale? (Ideally that I could "try" first to see if it
> solves the problem) OR...if you have a different theory, I'm all ears!
>
>
> Primary system retains full air indefinitely.
>
>
> 2nd big question: Is this an air bottle catastrophic failure waiting to
> happen if I continue to fill to capacity prior to flight?
>
>
> On a side note...thoughts and prayers to those of you enduring "The Year
> Of The Hurricanes."
>
>
> Thank you all!
>
>
> Rico Jaeger
> 915 S. 11th Ave.
> <https://maps.google.com/?q=915+S.+11th+Ave.+%C2%A0+%C2%A0+%C2%A0+%C2%A0+%C2%A0+%C2%A0+%C2%A0+%C2%A0+%C2%A0+%0D+Wausau,+WI.+54401&entry=gmail&source=g>
>
> Wausau, WI. 54401
> 715.529.7426 <(715)%20529-7426>
> //
> 1969 Cessna 150J ^/---//-X
> N61333 //
> Hangar #35 / AUW
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
> Hangar #21 / AUW
>
>
Message 9
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| Subject: | Need Emergency Air Bottle |
Even if it only the small emergency bottle, I would be very cautious
about continue to fill it if there is a suspicion of a leak until you
know whether it is the bottle or one of the air-lines! We had a Yak 50
in the UK whose air bottle blew up, very fortunately while on the
ground, but had it happened in the air, it would have certainly brought
the aeroplane down!
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@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Marcus Bates
Sent: 11 September 2017 15:27
Subject: Re: Yak-List: Need Emergency Air Bottle
Have one for CJ. Same?
Sent from my iPad
On Sep 11, 2017, at 9:11 AM, Rico Jaeger <rocknpilot@hotmail.com
<mailto:rocknpilot@hotmail.com> > wrote:
Greetings!
I've been living with a leaking emergency air system for a while on my
-52. It used to slowly bleed-off over days, but now it flat-lines within
several hours. I've gone through check valves, external fill and
emergency air valve in rear cockpit - all to no avail. I think the next
best guess is a leaky bottle. Therefore...does anyone have a spare (new
or used) emergency sphere for sale? (Ideally that I could "try" first to
see if it solves the problem) OR...if you have a different theory, I'm
all ears!
Primary system retains full air indefinitely.
2nd big question: Is this an air bottle catastrophic failure waiting to
happen if I continue to fill to capacity prior to flight?
On a side note...thoughts and prayers to those of you enduring "The Year
Of The Hurricanes."
Thank you all!
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1969 Cessna 150J ^/---//-X
N61333 //
Hangar #35 / AUW
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
Hangar #21 / AUW
--
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Message 10
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| Subject: | Need Emergency Air Bottle |
I remember it all too well !
kp
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@mat
ronics.com] On Behalf Of Richard Goode
Sent: 11 September 2017 15:56
Subject: RE: Yak-List: Need Emergency Air Bottle
Even if it only the small emergency bottle, I would be very cautious about
continue to fill it if there is a suspicion of a leak until you know whethe
r it is the bottle or one of the air-lines! We had a Yak 50 in the UK whose
air bottle blew up, very fortunately while on the ground, but had it happe
ned in the air, it would have certainly brought the aeroplane down!
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@matronics.com [mailto:owner-yak-list-server@mat
ronics.com] On Behalf Of Marcus Bates
Sent: 11 September 2017 15:27
Subject: Re: Yak-List: Need Emergency Air Bottle
Have one for CJ. Same?
Sent from my iPad
On Sep 11, 2017, at 9:11 AM, Rico Jaeger <rocknpilot@hotmail.com> wrote:
Greetings!
I've been living with a leaking emergency air system for a while on my -52.
It used to slowly bleed-off over days, but now it flat-lines within severa
l hours. I've gone through check valves, external fill and emergency air va
lve in rear cockpit - all to no avail. I think the next best guess is a lea
ky bottle. Therefore...does anyone have a spare (new or used) emergency sph
ere for sale? (Ideally that I could "try" first to see if it solves the pro
blem) OR...if you have a different theory, I'm all ears!
Primary system retains full air indefinitely.
2nd big question: Is this an air bottle catastrophic failure waiting to hap
pen if I continue to fill to capacity prior to flight?
On a side note...thoughts and prayers to those of you enduring "The Year Of
The Hurricanes."
Thank you all!
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1969 Cessna 150J ^/---//-X
N61333 //
Hangar #35 / AUW
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
Hangar #21 / AUW
--
This message has been scanned for viruses and
dangerous content by <http://www.mailscanner.info/> MailScanner, and is
believed to be clean.
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Message 11
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| Subject: | Re: Need Emergency Air Bottle |
Rico-
suggest u pull the bottle and inspect; rusty water can sit on the bottom of t
hose things over time and eventually corrode a pinhole in it.
Won't be anything "catastrophic" other than almost instant loss of emerg air
. Had to replace mine for that reason. Easy to pull out; remove baggage fl
oor (if you have one) and gain access through rear cockpit "doors"; has a me
tal strap system that holds it in the bracket and a turnbuckle-like bolt ide
ntical (small 7 mm box wrench) to your wing attach cover strap that wraps ar
ound the wing attach access. One 17mm b nut and out she comes. Have to man
euver it around elevator and rudder cables. Good idea to pull, clean and tr
eat inside with anti-corrosive (ACF-50/Corrosion X) on a regular basis as bo
ttle just sits there with static pressure not moving for very long periods o
f time. Consult true experts on the list for their advice is also my advice
...ha, ha! Good luck!!
Hoot
Sent from my iPhone
> On Sep 11, 2017, at 10:11 AM, Rico Jaeger <rocknpilot@hotmail.com> wrote:
>
> Greetings!
>
>
> I've been living with a leaking emergency air system for a while on my -52
. It used to slowly bleed-off over days, but now it flat-lines within severa
l hours. I've gone through check valves, external fill and emergency air val
ve in rear cockpit - all to no avail. I think the next best guess is a leaky
bottle. Therefore...does anyone have a spare (new or used) emergency sphere
for sale? (Ideally that I could "try" first to see if it solves the problem
) OR...if you have a different theory, I'm all ears!
>
>
> Primary system retains full air indefinitely.
>
>
> 2nd big question: Is this an air bottle catastrophic failure waiting to ha
ppen if I continue to fill to capacity prior to flight?
>
>
> On a side note...thoughts and prayers to those of you enduring "The Year O
f The Hurricanes."
>
>
> Thank you all!
>
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1969 Cessna 150J ^/---//-X
> N61333 //
> Hangar #35 / AUW
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
> Hangar #21 / AUW
>
>
Message 12
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| Subject: | Need Emergency Air Bottle |
Hello Kevin,
Good to hear from you and hope all is well in your life. We are now
quite close to selling our hotel in Sri Lanka =93 the decision of
my wife and not me! =93 which will be sad, but will free up a lot
of time. However, for today, I'm not sure what I will do to fill the
time!
Best wishes
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@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Kevin Pilling
Sent: 11 September 2017 16:11
Subject: RE: Yak-List: Need Emergency Air Bottle
I remember it all too well !
kp
From: owner-yak-list-server@matronics.com
<mailto:owner-yak-list-server@matronics.com>
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode
Sent: 11 September 2017 15:56
Subject: RE: Yak-List: Need Emergency Air Bottle
Even if it only the small emergency bottle, I would be very cautious
about continue to fill it if there is a suspicion of a leak until you
know whether it is the bottle or one of the air-lines! We had a Yak 50
in the UK whose air bottle blew up, very fortunately while on the
ground, but had it happened in the air, it would have certainly brought
the aeroplane down!
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com <http://www.russianaeros.com>
From: owner-yak-list-server@matronics.com
<mailto:owner-yak-list-server@matronics.com>
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Marcus Bates
Sent: 11 September 2017 15:27
Subject: Re: Yak-List: Need Emergency Air Bottle
Have one for CJ. Same?
Sent from my iPad
On Sep 11, 2017, at 9:11 AM, Rico Jaeger <rocknpilot@hotmail.com
<mailto:rocknpilot@hotmail.com> > wrote:
Greetings!
I've been living with a leaking emergency air system for a while on my
-52. It used to slowly bleed-off over days, but now it flat-lines within
several hours. I've gone through check valves, external fill and
emergency air valve in rear cockpit - all to no avail. I think the next
best guess is a leaky bottle. Therefore...does anyone have a spare (new
or used) emergency sphere for sale? (Ideally that I could "try" first to
see if it solves the problem) OR...if you have a different theory, I'm
all ears!
Primary system retains full air indefinitely.
2nd big question: Is this an air bottle catastrophic failure waiting to
happen if I continue to fill to capacity prior to flight?
On a side note...thoughts and prayers to those of you enduring "The Year
Of The Hurricanes."
Thank you all!
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1969 Cessna 150J ^/---//-X
N61333 //
Hangar #35 / AUW
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
Hangar #21 / AUW
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Message 13
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| Subject: | Need Emergency Air Bottle |
I am sorry, but you're wrong to say "nothing catastrophic". Of course,
failure could well be a pin hole, or it can be a catastrophic explosion
=93 remember you are dealing with around 750 psi. I feel strongly
that every aircraft air bottle should be tested to at least 1.5 times
normal operating pressure every three years as a maximum interval. I
have seen them fail under test, but of course this is relatively mild
since they are filled with water and then sitting inside a water tank.
But out in the open, the results can be dramatic. I emphasise that I
have no commercial interest in these bottles, only that of safety
=93 but I know that Doug has new stainless steel bottles to sell.
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@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Hank Gibson
Sent: 11 September 2017 16:23
Subject: Re: Yak-List: Need Emergency Air Bottle
Rico-
suggest u pull the bottle and inspect; rusty water can sit on the bottom
of those things over time and eventually corrode a pinhole in it.
Won't be anything "catastrophic" other than almost instant loss of emerg
air. Had to replace mine for that reason. Easy to pull out; remove
baggage floor (if you have one) and gain access through rear cockpit
"doors"; has a metal strap system that holds it in the bracket and a
turnbuckle-like bolt identical (small 7 mm box wrench) to your wing
attach cover strap that wraps around the wing attach access. One 17mm b
nut and out she comes. Have to maneuver it around elevator and rudder
cables. Good idea to pull, clean and treat inside with anti-corrosive
(ACF-50/Corrosion X) on a regular basis as bottle just sits there with
static pressure not moving for very long periods of time. Consult true
experts on the list for their advice is also my advice...ha, ha! Good
luck!!
Hoot
Sent from my iPhone
On Sep 11, 2017, at 10:11 AM, Rico Jaeger <rocknpilot@hotmail.com
<mailto:rocknpilot@hotmail.com> > wrote:
Greetings!
I've been living with a leaking emergency air system for a while on my
-52. It used to slowly bleed-off over days, but now it flat-lines within
several hours. I've gone through check valves, external fill and
emergency air valve in rear cockpit - all to no avail. I think the next
best guess is a leaky bottle. Therefore...does anyone have a spare (new
or used) emergency sphere for sale? (Ideally that I could "try" first to
see if it solves the problem) OR...if you have a different theory, I'm
all ears!
Primary system retains full air indefinitely.
2nd big question: Is this an air bottle catastrophic failure waiting to
happen if I continue to fill to capacity prior to flight?
On a side note...thoughts and prayers to those of you enduring "The Year
Of The Hurricanes."
Thank you all!
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1969 Cessna 150J ^/---//-X
N61333 //
Hangar #35 / AUW
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
Hangar #21 / AUW
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| Subject: | FW: Ignore at your peril |
The results when an air bottle blows up! Not pretty, and potentially
disastrous.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
-----Original Message-----
From: Kevin Pilling [mailto:kjpilling@pillinggroup.com]
Sent: 11 September 2017 17:07
Subject: Ignore at your peril
If you want to illustrate your point feel free to use these.
I've got lots more too if you want them.
kp
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| Subject: | Re: Need Emergency Air Bottle |
Check the emergency air valves in both cockpits.=C2- You can remove the o
utput fitting on the valve and spray with soapy water to determine if it is
leaking past the valve.Dennis
From: Rico Jaeger <rocknpilot@hotmail.com>
To: "yak-list@matronics.com" <yak-list@matronics.com>
Sent: Monday, September 11, 2017 10:13 AM
Subject: Yak-List: Need Emergency Air Bottle
<!--#yiv4185270996 P {margin-top:0;margin-bottom:0;}-->Greetings!
I've been living with a leaking emergency air system for a while on my -52.
It used to slowly bleed-off over days, but now it flat-lines within severa
l hours. I've gone through check valves, external fill and emergency air va
lve in rear cockpit - all to no avail. I think the next=C2-best guess is
a leaky bottle. Therefore...does anyone have a spare (new or used) emergenc
y sphere=C2-for sale? (Ideally that I could "try" first to see if it solv
es the problem)=C2-OR...if you have a different theory, I'm all ears!
Primary system retains full air indefinitely.
2nd big question: Is this an air bottle catastrophic=C2-failure waiting t
o happen if I continue to fill to capacity prior to flight?
On a side note...thoughts and prayers to those of you enduring "The Year Of
The Hurricanes."
Thank you all!
Rico Jaeger
915 S. 11th Ave. =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2-
=C2-
Wausau, WI. 54401 =C2- =C2-=C2-
715.529.7426 =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2-
=C2-
=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2
- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2-
=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2
- =C2- =C2- //
1969 Cessna 150J =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2-
=C2- =C2- =C2- =C2- =C2- =C2-^/---//-X
N61333 =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2
- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2-
=C2- =C2- =C2- =C2- =C2-//Hangar #35 / AUW
=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2
- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2-
=C2- =C2- =C2- =C2- //=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-=C2-=C2-
1992 Yakovlev Yak 52=C2-=C2-=C2-=C2-^/---//-X
N21YK =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2-
=C2- =C2- =C2- =C2- =C2- =C2- =C2- //Hangar #21 / AUW
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-
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| Subject: | Re: Ignore at your peril |
Was this from a few years ago...or another 50 that suffered a failure?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=472797#472797
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| Subject: | Re: Ignore at your peril |
I expect it's this one (Yak-50, G-YAKK).
--------
CJ and Yak-52 owner
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=472807#472807
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