Today's Message Index:
----------------------
1. 12:52 AM - CJ6 Nose strut Oleo kit (Ttail)
2. 05:27 AM - Re: CJ6 Nose strut Oleo kit (Egon)
3. 05:41 AM - Re: CJ6 Nose strut Oleo kit (Ttail)
4. 05:51 AM - Re: Re: Reverse Rotation On Shutdown (Rico Jaeger)
5. 06:03 AM - Re: Re: Reverse Rotation On Shutdown (A. Dennis Savarese)
6. 06:50 AM - Re: Re: Reverse Rotation On Shutdown (Bitterlich, Mark G CIV NAVAIR, WD)
7. 07:10 AM - Re: Re: Reverse Rotation On Shutdown (j blake)
8. 07:29 AM - Re: Re: CJ6 Nose strut Oleo kit (Bill Lang)
9. 07:31 AM - Re: Re: Reverse Rotation On Shutdown (John Nolan)
10. 08:56 AM - Re: Re: Reverse Rotation On Shutdown (KingCJ6@aol.com)
11. 09:25 AM - Re: CJ6 Nose strut Oleo kit (Ttail)
12. 11:10 AM - Re: Re: Reverse Rotation On Shutdown (A. Dennis Savarese)
13. 11:30 AM - Re: Re: Reverse Rotation On Shutdown (A. Dennis Savarese)
14. 12:31 PM - Re: Re: Reverse Rotation On Shutdown (John Nolan)
15. 07:43 PM - Re: Reverse Rotation On Shutdown (Egon)
16. 08:33 PM - Carb fuel drain on Housai engine while stored on shipping pallet (david stroud)
Message 1
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| Subject: | CJ6 Nose strut Oleo kit |
Chasing a Nose Gear oleo Seal kit ... can anyone help ? Doug is out of stock at
the moment.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430707#430707
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| Subject: | Re: CJ6 Nose strut Oleo kit |
T'tail. I wonder if the CJ seal kit is the same as the Yak.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430710#430710
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| Subject: | Re: CJ6 Nose strut Oleo kit |
Good question Egon ... anyone know
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430711#430711
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| Subject: | Re: Reverse Rotation On Shutdown |
Dennis=2C
I never cease to be amazed at not only how much you know these aircraft=2C
but the detail with which you can back up your explanations. If you would'v
e been my Science teacher is High School - I would've GONE TO CLASS! Thank
you for all that. As usual=2C your email was a thorough tutorial - and very
reassuring that the high reading on the gauge can move down on my short li
st of concerns regarding all things N21YK.
Now...on to that pesky leaking emergency air! :)
THANK YOU!
Rico Jaeger
915 S. 11th Ave.
Wausau=2C WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
From: dsavarese0812@bellsouth.net
Subject: Re: Yak-List: Re: Reverse Rotation On Shutdown
Rico=2CIf you do the math on what the fuel pressure is on the fuel hoses=2C
based on what the fuel pressure gauge reads=2C you'll find the fuel pressu
re to be extremely low compared to the "working" pressure of the fuel hoses
.
To do the conversion=2C multiply whatever the instrument reading is times 1
4.22 to get PSI. So if your instrument is reading "5" (which is 5 KG/Sq.CM
)=2C the fuel pressure is approximately 71 PSI. In no way is this or even
a "6" or "10" on the fuel pressure instrument going to cause a flexible fue
l hose to burst UNLESS the hose is already deteriorated.
Over the years I have seen many=2C many fuel hoses deteriorated to the poin
t where if one were to bend or flex the hose=2C it=0A
would literally crack. Folks need to understand there really was a method
to the Russian madness about replacing flexible lines every 5 (or 7) years
. Just the same way they should be replaced on our Cessnas=2C Pipers and
Beechcraft standard category airplanes. If one pushes the life limit of th
ese hoses=2C you can be assured they will deteriorate and ultimately fail
=2C possibly causing serious damage or even life-threatening situations. O
ne of the most susceptible hoses to deterioration on the 52 is the primer h
ose which is mounted on upper right side (cockpit right) of the firewall.
The hose goes all the way over to the left side of the engine and is affixe
d to a fitting mounted on a bracket on the #2 intake manifold. This hose f
or some reason=2C seems to deteriorate much faster than some of the other h
oses under the cowling at a point just forward of the firewall. I believe
this is due to there being a "heat=0A
pocket" up in that corner of the cowling. My recommendation is every time
you open the cowl=2C run your hand over the primer flexible hose. If it i
s rough and like sandpaper=2C it probably is a good idea to replace it. Ho
w do I know this? Because it happened to me. Luckily I caught it before i
t became a catastrophy. I had the cowl open and was pushing the primer whe
n I saw fuel spraying out of the top of this hose. Luckily I caught it bef
ore it became a disaster.
Speaking of fuel hoses=0A
deteriorating=2C how many folks on the List actually check and VERIFY the
fuel shut off is doing what it is suppose to do at least once a year? Othe
r than testing it with the engine running=2C do you know how to test it wit
hout the engine running? You certainly don't want to find out you can't sh
ut off the fuel AFTER the fire starts.
Dennis
From: Rico Jaeger=0A
<rocknpilot@hotmail.com>
To: "yak-list@matronics.com" <yak-list@matronics.com>
Sent: Wednesday=2C September 17=2C 2014 1:39 PM
Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
=0A
=0A
=0A
As long as this thread has extended into this area...I have gone into this
Yak business acutely alert for fire issues=2C since - some of you may recal
l - the reason I got into a Yak at all was that I bought mine AFTER a catas
trophic engine fire. While I never learned the details 1st hand=2C it would
appear that it happened at start up since I had to siphon what seemed to b
e full tanks. I was told the working theory was that the flexible fuel line
going to the carb had split open=2C and with a thoroughly oil-soaked engin
e compartment=2C the blaze and burn-duration were both impressive to behold
.
As it is=2C my fuel pressure runs slightly high at higher power settings. S
hould I be worried about slightly higher pressure fatiguing a line or fitti
ng? I would hate to think this may be deja vu...
Rico Jaeger
915 S. 11th Ave.
Wausau=2C WI. 54401 =0A
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //
=0A
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
> From: mark.bitterlich@navy.mil
> To: yak-list@matronics.com
> Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
> Date: Wed=2C 17 Sep 2014 18:20:24 +0000
>
mark.bitterlich@navy.mil>
>
> I believe you might have had something wrong with your carb or your engi
ne Steve.
>=0A
> For you to have a fire in the carb intake as you have described=2C you wo
uld need a source of ignition for the fuel. That would require a backfir
e through the blower to the carb. Lots of reasons that could happen=2C but
none them normal.
>
> Mark
>
>
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
atronics.com] On Behalf Of Steven A. Dalton
> Sent: Tuesday=2C September 16=2C 2014 7:04 PM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: Reverse Rotation On Shutdown
>
>
> As I recently sold my Yak-52TW it may be inappropriate of me to comment
=2C but:
>
> I owned my Yak with an M-14PF for 13 years. Without fail=2C EVERY time I
moved the throttle full forward at shutdown I experienced a fire in the=0A
carb intake. After emptying a Halon bottle to stop the paint on the bottom
of the cowling from burning any further I quickly decided this was a bad i
dea. I NEVER had such an experience with leaving the throttle at idle. YMMV
=2C Batteries not included=2C past performance is no guarantee of future re
turns....
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430643#430643
>
>
>
>
>
>
>
>
>
>
=0A
=0A
=0A
=0A
=0A
=0A
=0A
=0A
============0A
============0A
============0A
============0A
=0A
Message 5
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| Subject: | Re: Reverse Rotation On Shutdown |
Thanks Rico for your kind words. My next question is, do you know how
totest your fuel shut off without having to run the engine?
Leaking emergency air issue -
First determine if the leak is caused by a leaking emergency air valve
or potentially coming from the tank.
- When did you first notice the emergency air was leaking down?
- Have you put any soapy water on the external air fill port after you
fill the main and emergency systems?
- What was the last thing you did with the emergency system?
A - Emergency gear extension test?
B - Air bottle removed for pressure testing?
C- Anything else?
Once you answer these questions, we can move on to troubleshooting.
Dennis
-
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 9/18/2014 7:51 AM, Rico Jaeger wrote:
> Dennis,
>
> I never cease to be amazed at not only how much you know these
> aircraft, but the detail with which you can back up your explanations.
> If you would've been my Science teacher is High School - I would've
> GONE TO CLASS! Thank you for all that. As usual, your email was a
> thorough tutorial - and very reassuring that the high reading on the
> gauge can move down on my short list of concerns regarding all things
> N21YK.
>
> Now...on to that pesky leaking emergency air! :)
>
> THANK YOU!
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1966 Cessna 150F ^/---//-X
> N8558G //
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
>
>
> ------------------------------------------------------------------------
> Date: Wed, 17 Sep 2014 14:35:35 -0700
> From: dsavarese0812@bellsouth.net
> Subject: Re: Yak-List: Re: Reverse Rotation On Shutdown
> To: yak-list@matronics.com
>
> Rico,
> If you do the math on what the fuel pressure is on the fuel hoses,
> based on what the fuel pressure gauge reads, you'll find the fuel
> pressure to be extremely low compared to the "working" pressure of the
> fuel hoses.
>
> To do the conversion, multiply whatever the instrument reading is
> times 14.22 to get PSI. So if your instrument is reading "5" (which
> is 5 KG/Sq.CM), the fuel pressure is approximately 71 PSI. In no way
> is this or even a "6" or "10" on the fuel pressure instrument going to
> cause a flexible fuel hose to burst UNLESS the hose is already
> deteriorated.
>
> Over the years I have seen many, many fuel hoses deteriorated to the
> point where if one were to bend or flex the hose, it would literally
> crack. Folks need to understand there really was a method to the
> Russian madness about replacing flexible lines every 5 (or 7) years.
> Just the same way they should be replaced on our Cessnas, Pipers and
> Beechcraft standard category airplanes. If one pushes the life limit
> of these hoses, you can be assured they will deteriorate and
> ultimately fail, possibly causing serious damage or even
> life-threatening situations. One of the most susceptible hoses to
> deterioration on the 52 is the primer hose which is mounted on upper
> right side (cockpit right) of the firewall. The hose goes all the way
> over to the left side of the engine and is affixed to a fitting
> mounted on a bracket on the #2 intake manifold. This hose for some
> reason, seems to deteriorate much faster than some of the other hoses
> under the cowling at a point just forward of the firewall. I believe
> this is due to there being a "heat pocket" up in that corner of the
> cowling. My recommendation is every time you open the cowl, run your
> hand over the primer flexible hose. If it is rough and like
> sandpaper, it probably is a good idea to replace it. How do I know
> this? Because it happened to me. Luckily I caught it before it
> became a catastrophy. I had the cowl open and was pushing the primer
> when I saw fuel spraying out of the top of this hose. Luckily I
> caught it before it became a disaster.
>
> Speaking of fuel hoses deteriorating, how many folks on the List
> actually check and VERIFY the fuel shut off is doing what it is
> suppose to do at least once a year? Other than testing it with the
> engine running, do you know how to test it without the engine
> running? You certainly don't want to find out you can't shut off the
> fuel AFTER the fire starts.
> Dennis
>
> ------------------------------------------------------------------------
> *From:* Rico Jaeger <rocknpilot@hotmail.com>
> *To:* "yak-list@matronics.com" <yak-list@matronics.com>
> *Sent:* Wednesday, September 17, 2014 1:39 PM
> *Subject:* RE: Yak-List: Re: Reverse Rotation On Shutdown
>
> As long as this thread has extended into this area...I have gone into
> this Yak business acutely alert for fire issues, since - some of you
> may recall - the reason I got into a Yak at all was that I bought mine
> AFTER a catastrophic engine fire. While I never learned the details
> 1st hand, it would appear that it happened at start up since I had to
> siphon what seemed to be full tanks. I was told the working theory was
> that the flexible fuel line going to the carb had split open, and with
> a thoroughly oil-soaked engine compartment, the blaze and
> burn-duration were both impressive to behold.
>
> As it is, my fuel pressure runs slightly high at higher power
> settings. Should I be worried about slightly higher pressure fatiguing
> a line or fitting? I would hate to think this may be deja vu...
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1966 Cessna 150F ^/---//-X
> N8558G //
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
>
>
> > From: mark.bitterlich@navy.mil
> > To: yak-list@matronics.com
> > Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
> > Date: Wed, 17 Sep 2014 18:20:24 +0000
> >
> <mark.bitterlich@navy.mil>
> >
> > I believe you might have had something wrong with your carb or your
> engine Steve.
> >
> > For you to have a fire in the carb intake as you have described, you
> would need a source of ignition for the fuel. That would require a
> backfire through the blower to the carb. Lots of reasons that could
> happen, but none them normal.
> >
> > Mark
> >
> >
> >
> >
> > -----Original Message-----
> > From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Steven A. Dalton
> > Sent: Tuesday, September 16, 2014 7:04 PM
> > To: yak-list@matronics.com
> > Subject: Yak-List: Re: Reverse Rotation On Shutdown
> >
> >
> > As I recently sold my Yak-52TW it may be inappropriate of me to
> comment, but:
> >
> > I owned my Yak with an M-14PF for 13 years. Without fail, EVERY time
> I moved the throttle full forward at shutdown I experienced a fire in
> the carb intake. After emptying a Halon bottle to stop the paint on
> the bottom of the cowling from burning any further I quickly decided
> this was a bad idea. I NEVER had such an experience with leaving the
> throttle at idle. YMMV, Batteries not included, past performance is no
> guarantee of future returns....
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=430643#430643
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> *
>
>
> *
>
>
> *
>
> ==========
> rget="_blank">http://www.matronics.com/Navigator?Yak-List
> ==========
> http://forums.matronics.com
> ==========
> ="_blank">http://www.matronics.com/contribution
> ==========
>
> *
> *
>
>
> *
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| Subject: | Re: Reverse Rotation On Shutdown |
Ditto on the primer hose with my aircraft Dennis. I used to have a fire sleeve
covering that line and have since REMOVED it. Why? Because as you have mentioned,
if you cannot inspect the line, you really can't tell whether it is time
to replace it. It is a good habit for M-14 owners to always look for leaks
on this hose, I have replaced mine TWICE.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of A. Dennis Savarese
Sent: Wednesday, September 17, 2014 5:36 PM
Subject: Re: Yak-List: Re: Reverse Rotation On Shutdown
Rico,
If you do the math on what the fuel pressure is on the fuel hoses, based on what
the fuel pressure gauge reads, you'll find the fuel pressure to be extremely
low compared to the "working" pressure of the fuel hoses.
To do the conversion, multiply whatever the instrument reading is times 14.22 to
get PSI. So if your instrument is reading "5" (which is 5 KG/Sq.CM), the fuel
pressure is approximately 71 PSI. In no way is this or even a "6" or "10"
on the fuel pressure instrument going to cause a flexible fuel hose to burst UNLESS
the hose is already deteriorated.
Over the years I have seen many, many fuel hoses deteriorated to the point where
if one were to bend or flex the hose, it would literally crack. Folks need
to understand there really was a method to the Russian madness about replacing
flexible lines every 5 (or 7) years. Just the same way they should be replaced
on our Cessnas, Pipers and Beechcraft standard category airplanes. If one
pushes the life limit of these hoses, you can be assured they will deteriorate
and ultimately fail, possibly causing serious damage or even life-threatening
situations. One of the most susceptible hoses to deterioration on the 52 is
the primer hose which is mounted on upper right side (cockpit right) of the firewall.
The hose goes all the way over to the left side of the engine and is
affixed to a fitting mounted on a bracket on the #2 intake manifold. This hose
for some reason, seems to deteriorate much faster than some of the other hoses
under the cowling at a point just forward of the firewall. I believe this
is due to there being a "heat pocket" up in that corner of the cowling. My recommendation
is every time you open the cowl, run your hand over the primer flexible
hose. If it is rough and like sandpaper, it probably is a good idea to
replace it. How do I know this? Because it happened to me. Luckily I caught
it before it became a catastrophy. I had the cowl open and was pushing the
primer when I saw fuel spraying out of the top of this hose. Luckily I caught
it before it became a disaster.
Speaking of fuel hoses deteriorating, how many folks on the List actually check
and VERIFY the fuel shut off is doing what it is suppose to do at least once
a year? Other than testing it with the engine running, do you know how to test
it without the engine running? You certainly don't want to find out you can't
shut off the fuel AFTER the fire starts.
Dennis
________________________________
From: Rico Jaeger <rocknpilot@hotmail.com>
Sent: Wednesday, September 17, 2014 1:39 PM
Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
As long as this thread has extended into this area...I have gone into this Yak
business acutely alert for fire issues, since - some of you may recall - the reason
I got into a Yak at all was that I bought mine AFTER a catastrophic engine
fire. While I never learned the details 1st hand, it would appear that it happened
at start up since I had to siphon what seemed to be full tanks. I was
told the working theory was that the flexible fuel line going to the carb had
split open, and with a thoroughly oil-soaked engine compartment, the blaze and
burn-duration were both impressive to behold.
As it is, my fuel pressure runs slightly high at higher power settings. Should
I be worried about slightly higher pressure fatiguing a line or fitting? I would
hate to think this may be deja vu...
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
> From: mark.bitterlich@navy.mil
> To: yak-list@matronics.com
> Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
> Date: Wed, 17 Sep 2014 18:20:24 +0000
>
>
> I believe you might have had something wrong with your carb or your engine Steve.
>
> For you to have a fire in the carb intake as you have described, you would need
a source of ignition for the fuel. That would require a backfire through the
blower to the carb. Lots of reasons that could happen, but none them normal.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Steven A. Dalton
> Sent: Tuesday, September 16, 2014 7:04 PM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: Reverse Rotation On Shutdown
>
>
> As I recently sold my Yak-52TW it may be inappropriate of me to comment, but:
>
> I owned my Yak with an M-14PF for 13 years. Without fail, EVERY time I moved
the throttle full forward at shutdown I experienced a fire in the carb intake.
After emptying a Halon bottle to stop the paint on the bottom of the cowling
from burning any further I quickly decided this was a bad idea. I NEVER had such
an experience with leaving the throttle at idle. YMMV, Batteries not included,
past performance is no guarantee of future returns....
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430643#430643
>
>
Message 7
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| Subject: | Re: Reverse Rotation On Shutdown |
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IEZPUlVNUyAtIF8tPSBTYW1lIGdyZWF0IGNvbnRlbnQgYWxzbyBhdmFpbGFibGUgdmlhIHRoZSBX
ZWIgRm9ydW1zISBfLT0gXy09IC0tPiBodHRwOi8vZm9ydW1zLm1hdHJvbmljcy5jb20gXy09IF8t
PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09
PT09IF8tPSAtIExpc3QgQ29udHJpYnV0aW9uIFdlYiBTaXRlIC0gXy09IFRoYW5rIHlvdSBmb3Ig
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LS0+IGh0dHA6Ly93d3cubWF0cm9uaWNzLmNvbS9jb250cmlidXRpb24gXy09PT09PT09PT09PT09
PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0g
Message 8
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| Subject: | Re: CJ6 Nose strut Oleo kit |
TTail
We have a nose strut with bent forks, a result of a taxi accident. Might help,
in Cessnock
Blang
Sent from my iPad
> On 18 Sep 2014, at 20:44, "Ttail" <ttail@internode.on.net> wrote:
>
>
> Good question Egon ... anyone know
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430711#430711
>
>
>
>
>
>
>
>
>
>
Message 9
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| Subject: | Re: Reverse Rotation On Shutdown |
Dennis,
Okay, I'll ask since no one has. How do you properly check the fuel shut
off valve for proper operation without the engine running? I think I know
since we did this on my Yak52,
John Nolan
On Thu, Sep 18, 2014 at 9:02 AM, A. Dennis Savarese <
dsavarese0812@bellsouth.net> wrote:
> Thanks Rico for your kind words. My next question is, do you know how to
> test your fuel shut off without having to run the engine?
>
> Leaking emergency air issue -
> First determine if the leak is caused by a leaking emergency air valve or
> potentially coming from the tank.
> - When did you first notice the emergency air was leaking down?
> - Have you put any soapy water on the external air fill port after you
> fill the main and emergency systems?
> - What was the last thing you did with the emergency system?
> A - Emergency gear extension test?
> B - Air bottle removed for pressure testing?
> C- Anything else?
>
> Once you answer these questions, we can move on to troubleshooting.
> Dennis
> -
>
> A. Dennis Savarese334-285-6263334-546-8182 (mobile)www.yak-52.com
> Skype - Yakguy1
>
> On 9/18/2014 7:51 AM, Rico Jaeger wrote:
>
> Dennis,
>
> I never cease to be amazed at not only how much you know these aircraft,
> but the detail with which you can back up your explanations. If you
> would've been my Science teacher is High School - I would've GONE TO CLASS!
> Thank you for all that. As usual, your email was a thorough tutorial - and
> very reassuring that the high reading on the gauge can move down on my
> short list of concerns regarding all things N21YK.
>
> Now...on to that pesky leaking emergency air! :)
>
> THANK YOU!
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1966 Cessna 150F ^/---//-X
> N8558G //
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
>
>
> ------------------------------
> Date: Wed, 17 Sep 2014 14:35:35 -0700
> From: dsavarese0812@bellsouth.net
> Subject: Re: Yak-List: Re: Reverse Rotation On Shutdown
> To: yak-list@matronics.com
>
> Rico,
> If you do the math on what the fuel pressure is on the fuel hoses, based
> on what the fuel pressure gauge reads, you'll find the fuel pressure to be
> extremely low compared to the "working" pressure of the fuel hoses.
>
> To do the conversion, multiply whatever the instrument reading is times
> 14.22 to get PSI. So if your instrument is reading "5" (which is 5
> KG/Sq.CM), the fuel pressure is approximately 71 PSI. In no way is this or
> even a "6" or "10" on the fuel pressure instrument going to cause a
> flexible fuel hose to burst UNLESS the hose is already deteriorated.
>
> Over the years I have seen many, many fuel hoses deteriorated to the
> point where if one were to bend or flex the hose, it would literally
> crack. Folks need to understand there really was a method to the Russian
> madness about replacing flexible lines every 5 (or 7) years. Just the
> same way they should be replaced on our Cessnas, Pipers and Beechcraft
> standard category airplanes. If one pushes the life limit of these hoses,
> you can be assured they will deteriorate and ultimately fail, possibly
> causing serious damage or even life-threatening situations. One of the
> most susceptible hoses to deterioration on the 52 is the primer hose which
> is mounted on upper right side (cockpit right) of the firewall. The hose
> goes all the way over to the left side of the engine and is affixed to a
> fitting mounted on a bracket on the #2 intake manifold. This hose for some
> reason, seems to deteriorate much faster than some of the other hoses under
> the cowling at a point just forward of the firewall. I believe this is due
> to there being a "heat pocket" up in that corner of the cowling. My
> recommendation is every time you open the cowl, run your hand over the
> primer flexible hose. If it is rough and like sandpaper, it probably is a
> good idea to replace it. How do I know this? Because it happened to me.
> Luckily I caught it before it became a catastrophy. I had the cowl open
> and was pushing the primer when I saw fuel spraying out of the top of this
> hose. Luckily I caught it before it became a disaster.
>
> Speaking of fuel hoses deteriorating, how many folks on the List
> actually check and VERIFY the fuel shut off is doing what it is suppose to
> do at least once a year? Other than testing it with the engine running, do
> you know how to test it without the engine running? You certainly don't
> want to find out you can't shut off the fuel AFTER the fire starts.
> Dennis
>
> ------------------------------
> *From:* Rico Jaeger <rocknpilot@hotmail.com> <rocknpilot@hotmail.com>
> *To:* "yak-list@matronics.com" <yak-list@matronics.com>
> <yak-list@matronics.com> <yak-list@matronics.com>
> *Sent:* Wednesday, September 17, 2014 1:39 PM
> *Subject:* RE: Yak-List: Re: Reverse Rotation On Shutdown
>
> As long as this thread has extended into this area...I have gone into
> this Yak business acutely alert for fire issues, since - some of you may
> recall - the reason I got into a Yak at all was that I bought mine AFTER a
> catastrophic engine fire. While I never learned the details 1st hand, it
> would appear that it happened at start up since I had to siphon what seemed
> to be full tanks. I was told the working theory was that the flexible fuel
> line going to the carb had split open, and with a thoroughly oil-soaked
> engine compartment, the blaze and burn-duration were both impressive to
> behold.
>
> As it is, my fuel pressure runs slightly high at higher power settings.
> Should I be worried about slightly higher pressure fatiguing a line or
> fitting? I would hate to think this may be deja vu...
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1966 Cessna 150F ^/---//-X
> N8558G //
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
>
>
> > From: mark.bitterlich@navy.mil
> > To: yak-list@matronics.com
> > Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
> > Date: Wed, 17 Sep 2014 18:20:24 +0000
> >
> <mark.bitterlich@navy.mil> <mark.bitterlich@navy.mil>
> >
> > I believe you might have had something wrong with your carb or your
> engine Steve.
> >
> > For you to have a fire in the carb intake as you have described, you
> would need a source of ignition for the fuel. That would require a backfire
> through the blower to the carb. Lots of reasons that could happen, but none
> them normal.
> >
> > Mark
> >
> >
> >
> >
> > -----Original Message-----
> > From: owner-yak-list-server@matronics.com [
> mailto:owner-yak-list-server@matronics.com
> <owner-yak-list-server@matronics.com>] On Behalf Of Steven A. Dalton
> > Sent: Tuesday, September 16, 2014 7:04 PM
> > To: yak-list@matronics.com
> > Subject: Yak-List: Re: Reverse Rotation On Shutdown
> >
> <flatspins@gmail.com>
> >
> > As I recently sold my Yak-52TW it may be inappropriate of me to comment,
> but:
> >
> > I owned my Yak with an M-14PF for 13 years. Without fail, EVERY time I
> moved the throttle full forward at shutdown I experienced a fire in the
> carb intake. After emptying a Halon bottle to stop the paint on the bottom
> of the cowling from burning any further I quickly decided this was a bad
> idea. I NEVER had such an experience with leaving the throttle at idle.
> YMMV, Batteries not included, past performance is no guarantee of future
> returns....
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=430643#430643
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
> *
>
> ==========
> rget="_blank">http://www.matronics.com/Navigator?Yak-List <http://www.matronics.com/Navigator?Yak-List>
> ==========
> http://forums.matronics.com <http://forums.matronics.com>
> ==========
> ="_blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
> ==========
>
> *
>
>
> *
>
>
> *
>
>
Message 10
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| Subject: | Re: Reverse Rotation On Shutdown |
Not sure about Yak's, but on a CJ, the first and easiest place to check if
the emergency tank is running down is the check valve on the firewall.
Dave
In a message dated 9/18/2014 5:52:06 A.M. Pacific Daylight Time,
rocknpilot@hotmail.com writes:
Dennis,
I never cease to be amazed at not only how much you know these aircraft,
but the detail with which you can back up your explanations. If you would've
been my Science teacher is High School - I would've GONE TO CLASS! Thank
you for all that. As usual, your email was a thorough tutorial - and very
reassuring that the high reading on the gauge can move down on my short list
of concerns regarding all things N21YK.
Now...on to that pesky leaking emergency air! :)
THANK YOU!
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
____________________________________
Date: Wed, 17 Sep 2014 14:35:35 -0700
From: dsavarese0812@bellsouth.net
Subject: Re: Yak-List: Re: Reverse Rotation On Shutdown
Rico,
If you do the math on what the fuel pressure is on the fuel hoses, based
on what the fuel pressure gauge reads, you'll find the fuel pressure to be
extremely low compared to the "working" pressure of the fuel hoses.
To do the conversion, multiply whatever the instrument reading is times
14.22 to get PSI. So if your instrument is reading "5" (which is 5
KG/Sq.CM), the fuel pressure is approximately 71 PSI. In no way is this or even
a
"6" or "10" on the fuel pressure instrument going to cause a flexible fuel
hose to burst UNLESS the hose is already deteriorated.
Over the years I have seen many, many fuel hoses deteriorated to the point
where if one were to bend or flex the hose, it would literally crack.
Folks need to understand there really was a method to the Russian madness
about replacing flexible lines every 5 (or 7) years. Just the same way they
should be replaced on our Cessnas, Pipers and Beechcraft standard category
airplanes. If one pushes the life limit of these hoses, you can be assured
they will deteriorate and ultimately fail, possibly causing serious damage
or even life-threatening situations. One of the most susceptible hoses to
deterioration on the 52 is the primer hose which is mounted on upper right
side (cockpit right) of the firewall. The hose goes all the way over to
the left side of the engine and is affixed to a fitting mounted on a bracket
on the #2 intake manifold. This hose for some reason, seems to
deteriorate much faster than some of the other hoses under the cowling at a point
just forward of the firewall. I believe this is due to there being a "heat
pocket" up in that corner of the cowling. My recommendation is every time
you open the cowl, run your hand over the primer flexible hose. If it is
rough and like sandpaper, it probably is a good idea to replace it. How do I
know this? Because it happened to me. Luckily I caught it before it
became a catastrophy. I had the cowl open and was pushing the primer when I saw
fuel spraying out of the top of this hose. Luckily I caught it before it
became a disaster.
Speaking of fuel hoses deteriorating, how many folks on the List actually
check and VERIFY the fuel shut off is doing what it is suppose to do at
least once a year? Other than testing it with the engine running, do you know
how to test it without the engine running? You certainly don't want to
find out you can't shut off the fuel AFTER the fire starts.
Dennis
____________________________________
From: Rico Jaeger <rocknpilot@hotmail.com>
Sent: Wednesday, September 17, 2014 1:39 PM
Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
As long as this thread has extended into this area...I have gone into this
Yak business acutely alert for fire issues, since - some of you may recall
- the reason I got into a Yak at all was that I bought mine AFTER a
catastrophic engine fire. While I never learned the details 1st hand, it would
appear that it happened at start up since I had to siphon what seemed to be
full tanks. I was told the working theory was that the flexible fuel line
going to the carb had split open, and with a thoroughly oil-soaked engine
compartment, the blaze and burn-duration were both impressive to behold.
As it is, my fuel pressure runs slightly high at higher power settings.
Should I be worried about slightly higher pressure fatiguing a line or
fitting? I would hate to think this may be deja vu...
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
> From: mark.bitterlich@navy.mil
> To: yak-list@matronics.com
> Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
> Date: Wed, 17 Sep 2014 18:20:24 +0000
>
> --> Yak-List message posted by: "Bitterlich, Mark G CIV NAVAIR, WD"
<mark.bitterlich@navy.mil>
>
> I believe you might have had something wrong with your carb or your
engine Steve.
>
> For you to have a fire in the carb intake as you have described, you
would need a source of ignition for the fuel. That would require a backfire
through the blower to the carb. Lots of reasons that could happen, but none
them normal.
>
> Mark
>
>
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Steven A. Dalton
> Sent: Tuesday, September 16, 2014 7:04 PM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: Reverse Rotation On Shutdown
>
>
> As I recently sold my Yak-52TW it may be inappropriate of me to comment,
but:
>
> I owned my Yak with an M-14PF for 13 years. Without fail, EVERY time I
moved the throttle full forward at shutdown I experienced a fire in the carb
intake. After emptying a Halon bottle to stop the paint on the bottom of
the cowling from burning any further I quickly decided this was a bad idea.
I NEVER had such an experience with leaving the throttle at idle. YMMV,
Batteries not included, past performance is no guarantee of future returns....
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430643#430643
>
>
>
>
>
>
>
>
>
>
==========
rget="_blank">http://www.matronics.com/Navigator?Yak-List
=========== http://forums.matronics.com ===========
="_blank">http://www.matronics.com/contribution ===========
Message 11
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| Subject: | Re: CJ6 Nose strut Oleo kit |
Thanks Bill, will let you know how I get on.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430735#430735
Message 12
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| Subject: | Re: Reverse Rotation On Shutdown |
Yes, we did. Tell me what you remember. I'll come back to you with any
changes/corrections.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 9/18/2014 9:31 AM, John Nolan wrote:
> Dennis,
>
> Okay, I'll ask since no one has. How do you properly check the fuel
> shut off valve for proper operation without the engine running? I
> think I know since we did this on my Yak52,
>
> John Nolan
>
> On Thu, Sep 18, 2014 at 9:02 AM, A. Dennis Savarese
> <dsavarese0812@bellsouth.net <mailto:dsavarese0812@bellsouth.net>> wrote:
>
> Thanks Rico for your kind words. My next question is, do you know
> how totest your fuel shut off without having to run the engine?
>
> Leaking emergency air issue -
> First determine if the leak is caused by a leaking emergency air
> valve or potentially coming from the tank.
> - When did you first notice the emergency air was leaking down?
> - Have you put any soapy water on the external air fill port after
> you fill the main and emergency systems?
> - What was the last thing you did with the emergency system?
> A - Emergency gear extension test?
> B - Air bottle removed for pressure testing?
> C- Anything else?
>
> Once you answer these questions, we can move on to troubleshooting.
> Dennis
> -
>
> A. Dennis Savarese
> 334-285-6263 <tel:334-285-6263>
> 334-546-8182 <tel:334-546-8182> (mobile)
> www.yak-52.com <http://www.yak-52.com>
> Skype - Yakguy1
>
> On 9/18/2014 7:51 AM, Rico Jaeger wrote:
>> Dennis,
>>
>> I never cease to be amazed at not only how much you know these
>> aircraft, but the detail with which you can back up your
>> explanations. If you would've been my Science teacher is High
>> School - I would've GONE TO CLASS! Thank you for all that. As
>> usual, your email was a thorough tutorial - and very reassuring
>> that the high reading on the gauge can move down on my short list
>> of concerns regarding all things N21YK.
>>
>> Now...on to that pesky leaking emergency air! :)
>>
>> THANK YOU!
>>
>> Rico Jaeger
>> 915 S. 11th Ave.
>> Wausau, WI. 54401
>> 715.529.7426 <tel:715.529.7426>
>> //
>> 1966 Cessna 150F ^/---//-X
>> N8558G //
>> //
>> 1992 Yakovlev Yak 52 ^/---//-X
>> N21YK //
>>
>>
>>
>>
>> ------------------------------------------------------------------------
>> Date: Wed, 17 Sep 2014 14:35:35 -0700
>> From: dsavarese0812@bellsouth.net
>> <mailto:dsavarese0812@bellsouth.net>
>> Subject: Re: Yak-List: Re: Reverse Rotation On Shutdown
>> To: yak-list@matronics.com <mailto:yak-list@matronics.com>
>>
>> Rico,
>> If you do the math on what the fuel pressure is on the fuel
>> hoses, based on what the fuel pressure gauge reads, you'll find
>> the fuel pressure to be extremely low compared to the "working"
>> pressure of the fuel hoses.
>>
>> To do the conversion, multiply whatever the instrument reading is
>> times 14.22 to get PSI. So if your instrument is reading "5"
>> (which is 5 KG/Sq.CM), the fuel pressure is approximately 71
>> PSI. In no way is this or even a "6" or "10" on the fuel
>> pressure instrument going to cause a flexible fuel hose to burst
>> UNLESS the hose is already deteriorated.
>>
>> Over the years I have seen many, many fuel hoses deteriorated to
>> the point where if one were to bend or flex the hose, it would
>> literally crack. Folks need to understand there really was a
>> method to the Russian madness about replacing flexible lines
>> every 5 (or 7) years. Just the same way they should be replaced
>> on our Cessnas, Pipers and Beechcraft standard category
>> airplanes. If one pushes the life limit of these hoses, you can
>> be assured they will deteriorate and ultimately fail, possibly
>> causing serious damage or even life-threatening situations. One
>> of the most susceptible hoses to deterioration on the 52 is the
>> primer hose which is mounted on upper right side (cockpit right)
>> of the firewall. The hose goes all the way over to the left side
>> of the engine and is affixed to a fitting mounted on a bracket on
>> the #2 intake manifold. This hose for some reason, seems to
>> deteriorate much faster than some of the other hoses under the
>> cowling at a point just forward of the firewall. I believe this
>> is due to there being a "heat pocket" up in that corner of the
>> cowling. My recommendation is every time you open the cowl, run
>> your hand over the primer flexible hose. If it is rough and like
>> sandpaper, it probably is a good idea to replace it. How do I
>> know this? Because it happened to me. Luckily I caught it before
>> it became a catastrophy. I had the cowl open and was pushing the
>> primer when I saw fuel spraying out of the top of this hose.
>> Luckily I caught it before it became a disaster.
>>
>> Speaking of fuel hoses deteriorating, how many folks on the List
>> actually check and VERIFY the fuel shut off is doing what it is
>> suppose to do at least once a year? Other than testing it with
>> the engine running, do you know how to test it without the engine
>> running? You certainly don't want to find out you can't shut off
>> the fuel AFTER the fire starts.
>> Dennis
>>
>> ------------------------------------------------------------------------
>> *From:* Rico Jaeger <rocknpilot@hotmail.com>
>> <mailto:rocknpilot@hotmail.com>
>> *To:* "yak-list@matronics.com" <mailto:yak-list@matronics.com>
>> <yak-list@matronics.com> <mailto:yak-list@matronics.com>
>> *Sent:* Wednesday, September 17, 2014 1:39 PM
>> *Subject:* RE: Yak-List: Re: Reverse Rotation On Shutdown
>>
>> As long as this thread has extended into this area...I have gone
>> into this Yak business acutely alert for fire issues, since -
>> some of you may recall - the reason I got into a Yak at all was
>> that I bought mine AFTER a catastrophic engine fire. While I
>> never learned the details 1st hand, it would appear that it
>> happened at start up since I had to siphon what seemed to be full
>> tanks. I was told the working theory was that the flexible fuel
>> line going to the carb had split open, and with a thoroughly
>> oil-soaked engine compartment, the blaze and burn-duration were
>> both impressive to behold.
>>
>> As it is, my fuel pressure runs slightly high at higher power
>> settings. Should I be worried about slightly higher pressure
>> fatiguing a line or fitting? I would hate to think this may be
>> deja vu...
>>
>> Rico Jaeger
>> 915 S. 11th Ave.
>> Wausau, WI. 54401
>> 715.529.7426 <tel:715.529.7426>
>> //
>> 1966 Cessna 150F ^/---//-X
>> N8558G //
>> //
>> 1992 Yakovlev Yak 52 ^/---//-X
>> N21YK //
>>
>>
>>
>>
>> > From: mark.bitterlich@navy.mil <mailto:mark.bitterlich@navy.mil>
>> > To: yak-list@matronics.com <mailto:yak-list@matronics.com>
>> > Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
>> > Date: Wed, 17 Sep 2014 18:20:24 +0000
>> >
>> WD" <mark.bitterlich@navy.mil> <mailto:mark.bitterlich@navy.mil>
>> >
>> > I believe you might have had something wrong with your carb or
>> your engine Steve.
>> >
>> > For you to have a fire in the carb intake as you have
>> described, you would need a source of ignition for the fuel. That
>> would require a backfire through the blower to the carb. Lots of
>> reasons that could happen, but none them normal.
>> >
>> > Mark
>> >
>> >
>> >
>> >
>> > -----Original Message-----
>> > From: owner-yak-list-server@matronics.com
>> <mailto:owner-yak-list-server@matronics.com>
>> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Steven
>> A. Dalton
>> > Sent: Tuesday, September 16, 2014 7:04 PM
>> > To: yak-list@matronics.com <mailto:yak-list@matronics.com>
>> > Subject: Yak-List: Re: Reverse Rotation On Shutdown
>> >
>> <flatspins@gmail.com> <mailto:flatspins@gmail.com>
>> >
>> > As I recently sold my Yak-52TW it may be inappropriate of me to
>> comment, but:
>> >
>> > I owned my Yak with an M-14PF for 13 years. Without fail, EVERY
>> time I moved the throttle full forward at shutdown I experienced
>> a fire in the carb intake. After emptying a Halon bottle to stop
>> the paint on the bottom of the cowling from burning any further I
>> quickly decided this was a bad idea. I NEVER had such an
>> experience with leaving the throttle at idle. YMMV, Batteries not
>> included, past performance is no guarantee of future returns....
>> >
>> >
>> >
>> >
>> > Read this topic online here:
>> >
>> > http://forums.matronics.com/viewtopic.php?p=430643#430643
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> *
>>
>>
>> *
>>
>>
>> *
>>
>> rget="_blank">http://www.matronics.com/Navigator?Yak-List
>> http://forums.matronics.com
>> ="_blank">http://www.matronics.com/contribution
>>
>> *
>> *
>>
>>
>> *
>
> *
>
> et="_blank">http://www.matronics.com/Navigator?Yak-List
> tp://forums.matronics.com
> _blank">http://www.matronics.com/contribution
>
> *
>
>
> *
>
>
> *
Message 13
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| Subject: | Re: Reverse Rotation On Shutdown |
Thanks for sharing your experience Mark. It certainly confirms what I
have seen many times.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 9/18/2014 8:48 AM, Bitterlich, Mark G CIV NAVAIR, WD wrote:
rk.bitterlich@navy.mil>
>
> Ditto on the primer hose with my aircraft Dennis. I used to have a fi
re sleeve covering that line and have since REMOVED it. Why? Because as
you have mentioned, if you cannot inspect the line, you really can't tel
l whether it is time to replace it. It is a good habit for M-14 owners t
o always look for leaks on this hose, I have replaced mine TWICE.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server
@matronics.com] On Behalf Of A. Dennis Savarese
> Sent: Wednesday, September 17, 2014 5:36 PM
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Re: Reverse Rotation On Shutdown
>
> Rico,
> If you do the math on what the fuel pressure is on the fuel hoses, base
d on what the fuel pressure gauge reads, you'll find the fuel pressure to
be extremely low compared to the "working" pressure of the fuel hoses.
>
> To do the conversion, multiply whatever the instrument reading is times
14.22 to get PSI. So if your instrument is reading "5" (which is 5 KG/S
q.CM), the fuel pressure is approximately 71 PSI. In no way is this or e
ven a "6" or "10" on the fuel pressure instrument going to cause a flexib
le fuel hose to burst UNLESS the hose is already deteriorated.
>
> Over the years I have seen many, many fuel hoses deteriorated to the po
int where if one were to bend or flex the hose, it would literally crack.
Folks need to understand there really was a method to the Russian madne
ss about replacing flexible lines every 5 (or 7) years. Just the same w
ay they should be replaced on our Cessnas, Pipers and Beechcraft standard
category airplanes. If one pushes the life limit of these hoses, you ca
n be assured they will deteriorate and ultimately fail, possibly causing
serious damage or even life-threatening situations. One of the most susc
eptible hoses to deterioration on the 52 is the primer hose which is moun
ted on upper right side (cockpit right) of the firewall. The hose goes a
ll the way over to the left side of the engine and is affixed to a fittin
g mounted on a bracket on the #2 intake manifold. This hose for some rea
son, seems to deteriorate much faster than some of the other hoses under
the cowling at a point just forward of the!
> firewall. I believe this is due to there being a "heat pocket" up i
n that corner of the cowling. My recommendation is every time you open t
he cowl, run your hand over the primer flexible hose. If it is rough and
like sandpaper, it probably is a good idea to replace it. How do I know
this? Because it happened to me. Luckily I caught it before it became
a catastrophy. I had the cowl open and was pushing the primer when I saw
fuel spraying out of the top of this hose. Luckily I caught it before i
t became a disaster.
>
>
> Speaking of fuel hoses deteriorating, how many folks on the List actual
ly check and VERIFY the fuel shut off is doing what it is suppose to do a
t least once a year? Other than testing it with the engine running, do y
ou know how to test it without the engine running? You certainly don't w
ant to find out you can't shut off the fuel AFTER the fire starts.
>
> Dennis
>
> ________________________________
>
> From: Rico Jaeger <rocknpilot@hotmail.com>
> To: "yak-list@matronics.com" <yak-list@matronics.com>
> Sent: Wednesday, September 17, 2014 1:39 PM
> Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
>
>
> As long as this thread has extended into this area...I have gone into t
his Yak business acutely alert for fire issues, since - some of you may r
ecall - the reason I got into a Yak at all was that I bought mine AFTER a
catastrophic engine fire. While I never learned the details 1st hand, it
would appear that it happened at start up since I had to siphon what see
med to be full tanks. I was told the working theory was that the flexible
fuel line going to the carb had split open, and with a thoroughly oil-so
aked engine compartment, the blaze and burn-duration were both impressive
to behold.
>
> As it is, my fuel pressure runs slightly high at higher power settings.
Should I be worried about slightly higher pressure fatiguing a line or f
itting? I would hate to think this may be deja vu...
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1966 Cessna 150F ^/---//-X
> N8558G //
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
>
>
>> From: mark.bitterlich@navy.mil
>> To: yak-list@matronics.com
>> Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
>> Date: Wed, 17 Sep 2014 18:20:24 +0000
>>
ark.bitterlich@navy.mil>
>>
>> I believe you might have had something wrong with your carb or your en
gine Steve.
>>
>> For you to have a fire in the carb intake as you have described, you w
ould need a source of ignition for the fuel. That would require a backfir
e through the blower to the carb. Lots of reasons that could happen, but
none them normal.
>>
>> Mark
>>
>>
>>
>>
>> -----Original Message-----
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-serve
r@matronics.com] On Behalf Of Steven A. Dalton
>> Sent: Tuesday, September 16, 2014 7:04 PM
>> To: yak-list@matronics.com
>> Subject: Yak-List: Re: Reverse Rotation On Shutdown
>>
m>
>>
>> As I recently sold my Yak-52TW it may be inappropriate of me to commen
t, but:
>>
>> I owned my Yak with an M-14PF for 13 years. Without fail, EVERY time I
moved the throttle full forward at shutdown I experienced a fire in the
carb intake. After emptying a Halon bottle to stop the paint on the botto
m of the cowling from burning any further I quickly decided this was a ba
d idea. I NEVER had such an experience with leaving the throttle at idle.
YMMV, Batteries not included, past performance is no guarantee of future
returns....
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=430643#430643
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
===========
===========
===========
===========
>
>
Message 14
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| Subject: | Re: Reverse Rotation On Shutdown |
Dennis,
I know you were going to ask me this. I remember actuating the shut off
handle while you visually confirmed the valve did indeed close on the left
side firewall. I don't remember if you showed or told me exactly what to
look for at that time. I was attempting to have you give us a detailed
explanation on how to do the procedure correctly.
I'm a first time caller, long time listener to the yak-list. I certainly
pay close attention to responses to questions from you, Mark, Richard along
with others with the knowledge and experience that we all can learn from.
Thanks for all your help over the past couple of years.
John Nolan
N58YK
On Thu, Sep 18, 2014 at 2:09 PM, A. Dennis Savarese <
dsavarese0812@bellsouth.net> wrote:
> Yes, we did. Tell me what you remember. I'll come back to you with any
> changes/corrections.
> Dennis
>
> A. Dennis Savarese334-285-6263334-546-8182 (mobile)www.yak-52.com
> Skype - Yakguy1
>
> On 9/18/2014 9:31 AM, John Nolan wrote:
>
> Dennis,
>
> Okay, I'll ask since no one has. How do you properly check the fuel shut
> off valve for proper operation without the engine running? I think I know
> since we did this on my Yak52,
>
> John Nolan
>
> On Thu, Sep 18, 2014 at 9:02 AM, A. Dennis Savarese <
> dsavarese0812@bellsouth.net> wrote:
>
>> Thanks Rico for your kind words. My next question is, do you know how
>> to test your fuel shut off without having to run the engine?
>>
>> Leaking emergency air issue -
>> First determine if the leak is caused by a leaking emergency air valve or
>> potentially coming from the tank.
>> - When did you first notice the emergency air was leaking down?
>> - Have you put any soapy water on the external air fill port after you
>> fill the main and emergency systems?
>> - What was the last thing you did with the emergency system?
>> A - Emergency gear extension test?
>> B - Air bottle removed for pressure testing?
>> C- Anything else?
>>
>> Once you answer these questions, we can move on to troubleshooting.
>> Dennis
>> -
>>
>> A. Dennis Savarese334-285-6263334-546-8182 (mobile)www.yak-52.com
>> Skype - Yakguy1
>>
>> On 9/18/2014 7:51 AM, Rico Jaeger wrote:
>>
>> Dennis,
>>
>> I never cease to be amazed at not only how much you know these
>> aircraft, but the detail with which you can back up your explanations. If
>> you would've been my Science teacher is High School - I would've GONE TO
>> CLASS! Thank you for all that. As usual, your email was a thorough tutorial
>> - and very reassuring that the high reading on the gauge can move down on
>> my short list of concerns regarding all things N21YK.
>>
>> Now...on to that pesky leaking emergency air! :)
>>
>> THANK YOU!
>>
>> Rico Jaeger
>> 915 S. 11th Ave.
>> Wausau, WI. 54401
>> 715.529.7426
>> //
>> 1966 Cessna 150F ^/---//-X
>> N8558G //
>> //
>> 1992 Yakovlev Yak 52 ^/---//-X
>> N21YK //
>>
>>
>>
>>
>> ------------------------------
>> Date: Wed, 17 Sep 2014 14:35:35 -0700
>> From: dsavarese0812@bellsouth.net
>> Subject: Re: Yak-List: Re: Reverse Rotation On Shutdown
>> To: yak-list@matronics.com
>>
>> Rico,
>> If you do the math on what the fuel pressure is on the fuel hoses, based
>> on what the fuel pressure gauge reads, you'll find the fuel pressure to be
>> extremely low compared to the "working" pressure of the fuel hoses.
>>
>> To do the conversion, multiply whatever the instrument reading is times
>> 14.22 to get PSI. So if your instrument is reading "5" (which is 5
>> KG/Sq.CM), the fuel pressure is approximately 71 PSI. In no way is this or
>> even a "6" or "10" on the fuel pressure instrument going to cause a
>> flexible fuel hose to burst UNLESS the hose is already deteriorated.
>>
>> Over the years I have seen many, many fuel hoses deteriorated to the
>> point where if one were to bend or flex the hose, it would literally
>> crack. Folks need to understand there really was a method to the Russian
>> madness about replacing flexible lines every 5 (or 7) years. Just the
>> same way they should be replaced on our Cessnas, Pipers and Beechcraft
>> standard category airplanes. If one pushes the life limit of these hoses,
>> you can be assured they will deteriorate and ultimately fail, possibly
>> causing serious damage or even life-threatening situations. One of the
>> most susceptible hoses to deterioration on the 52 is the primer hose which
>> is mounted on upper right side (cockpit right) of the firewall. The hose
>> goes all the way over to the left side of the engine and is affixed to a
>> fitting mounted on a bracket on the #2 intake manifold. This hose for some
>> reason, seems to deteriorate much faster than some of the other hoses under
>> the cowling at a point just forward of the firewall. I believe this is due
>> to there being a "heat pocket" up in that corner of the cowling. My
>> recommendation is every time you open the cowl, run your hand over the
>> primer flexible hose. If it is rough and like sandpaper, it probably is a
>> good idea to replace it. How do I know this? Because it happened to me.
>> Luckily I caught it before it became a catastrophy. I had the cowl open
>> and was pushing the primer when I saw fuel spraying out of the top of this
>> hose. Luckily I caught it before it became a disaster.
>>
>> Speaking of fuel hoses deteriorating, how many folks on the List
>> actually check and VERIFY the fuel shut off is doing what it is suppose to
>> do at least once a year? Other than testing it with the engine running, do
>> you know how to test it without the engine running? You certainly don't
>> want to find out you can't shut off the fuel AFTER the fire starts.
>> Dennis
>>
>> ------------------------------
>> *From:* Rico Jaeger <rocknpilot@hotmail.com> <rocknpilot@hotmail.com>
>> *To:* "yak-list@matronics.com" <yak-list@matronics.com>
>> <yak-list@matronics.com> <yak-list@matronics.com>
>> *Sent:* Wednesday, September 17, 2014 1:39 PM
>> *Subject:* RE: Yak-List: Re: Reverse Rotation On Shutdown
>>
>> As long as this thread has extended into this area...I have gone into
>> this Yak business acutely alert for fire issues, since - some of you may
>> recall - the reason I got into a Yak at all was that I bought mine AFTER a
>> catastrophic engine fire. While I never learned the details 1st hand, it
>> would appear that it happened at start up since I had to siphon what seemed
>> to be full tanks. I was told the working theory was that the flexible fuel
>> line going to the carb had split open, and with a thoroughly oil-soaked
>> engine compartment, the blaze and burn-duration were both impressive to
>> behold.
>>
>> As it is, my fuel pressure runs slightly high at higher power settings.
>> Should I be worried about slightly higher pressure fatiguing a line or
>> fitting? I would hate to think this may be deja vu...
>>
>> Rico Jaeger
>> 915 S. 11th Ave.
>> Wausau, WI. 54401
>> 715.529.7426
>> //
>> 1966 Cessna 150F ^/---//-X
>> N8558G //
>> //
>> 1992 Yakovlev Yak 52 ^/---//-X
>> N21YK //
>>
>>
>>
>>
>> > From: mark.bitterlich@navy.mil
>> > To: yak-list@matronics.com
>> > Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
>> > Date: Wed, 17 Sep 2014 18:20:24 +0000
>> >
>> <mark.bitterlich@navy.mil> <mark.bitterlich@navy.mil>
>> >
>> > I believe you might have had something wrong with your carb or your
>> engine Steve.
>> >
>> > For you to have a fire in the carb intake as you have described, you
>> would need a source of ignition for the fuel. That would require a backfire
>> through the blower to the carb. Lots of reasons that could happen, but none
>> them normal.
>> >
>> > Mark
>> >
>> >
>> >
>> >
>> > -----Original Message-----
>> > From: owner-yak-list-server@matronics.com [
>> mailto:owner-yak-list-server@matronics.com
>> <owner-yak-list-server@matronics.com>] On Behalf Of Steven A. Dalton
>> > Sent: Tuesday, September 16, 2014 7:04 PM
>> > To: yak-list@matronics.com
>> > Subject: Yak-List: Re: Reverse Rotation On Shutdown
>> >
>> <flatspins@gmail.com> <flatspins@gmail.com>
>> >
>> > As I recently sold my Yak-52TW it may be inappropriate of me to
>> comment, but:
>> >
>> > I owned my Yak with an M-14PF for 13 years. Without fail, EVERY time I
>> moved the throttle full forward at shutdown I experienced a fire in the
>> carb intake. After emptying a Halon bottle to stop the paint on the bottom
>> of the cowling from burning any further I quickly decided this was a bad
>> idea. I NEVER had such an experience with leaving the throttle at idle.
>> YMMV, Batteries not included, past performance is no guarantee of future
>> returns....
>> >
>> >
>> >
>> >
>> > Read this topic online here:
>> >
>> > http://forums.matronics.com/viewtopic.php?p=430643#430643
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
>>
>>
>>
>> *
>>
>> rget="_blank">http://www.matronics.com/Navigator?Yak-List <http://www.matronics.com/Navigator?Yak-List>
>> http://forums.matronics.com <http://forums.matronics.com>
>> ="_blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
>>
>> *
>>
>>
>>
>>
>> *
>>
>> et="_blank">http://www.matronics.com/Navigator?Yak-List <http://www.matronics.com/Navigator?Yak-List>
>> tp://forums.matronics.com <http://forums.matronics.com>
>> _blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
>>
>> *
>>
>>
>
>
> *
>
>
> *
>
>
Message 15
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| Subject: | Re: Reverse Rotation On Shutdown |
Ok. I'll have a go.
Pull Fuel Shut Off Handle
Undo Fuel Drain on the bottom of the Fuel Strainer Housing.
If fuel shutoff is working correctly, then just the fuel in the housing should
run out, ie the fuel should stop running fairly quickly.
Undoing the bottom of the strainer housing first and popping the fuel screen out,
will not check the fuel shutoff as the fuel should automatically stop running
when the filter pops out. ( safety feature )
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430762#430762
Message 16
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| Subject: | Carb fuel drain on Housai engine while stored on shipping pallet |
Lads, I need to Air Freight a Housai engine overseas and there is a
requirement to demonstrate
that there is no fuel in the carb for Dangerous Goods Certification
before submitting to the
Air Freight Carrier.
I have not become familiar enough with the engine unfortunately. So,
with the engine sitting on it's
back on the shipping pallet, ie...crankshaft vertical, is there a fuel
drain that could be easily removed
and shown as evidence of no fuel in the carb ? Might I have to remove
the carb or just the bowl to
show significant evidence of no fuel hazard ?
Thanks for any help...need to ship this bugger out next week.
Regards..
David Stroud
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