cjaviator
Joined: 20 Aug 2014
Posts: 29
Location: New Zealand
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 Posted: Tue Jun 05, 2018 12:28 am Post subject: Yak-List Digest: 19 Msgs - 06/04/18 |
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Could count Chinese plug failures in 25 years on the fingers of one hand - spread over 8 aircraft.
The only reason we changed to Dennis' automotive mod was that the harness itself was breaking down and it was a complete pain to replace the OEM harness,
Have to admit that while Denis's mod does a great job I would much prefer the original on the HS-6!
regards, Jay
NZ
On Tue, Jun 5, 2018 at 6:47 PM, Yak-List Digest Server <yak-list(at)matronics.com (yak-list(at)matronics.com)> wrote:
[quote]*
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EMail Version of Today's List Digest Archive
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Yak-List Digest Archive
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Total Messages Posted Mon 06/04/18: 19
----------------------------------------------------------
Today's Message Index:
----------------------
1. 05:01 AM - Re: Re: Chinese rebuild engine (Jill Gernetzke)
2. 05:46 AM - Re: Re: Re: Chinese rebuild engine (Bob Graves)
3. 05:51 AM - Re: Engine Stumble on Climb Out (JON BLAKE)
4. 06:49 AM - Re: Engine Stumble on Climb Out (A. Dennis Savarese)
5. 06:56 AM - Re: Engine Stumble on Climb Out (Roger Kemp)
6. 08:41 AM - Air Bottle Seal (Rico Jaeger)
7. 09:38 AM - Re: Chinese rebuild engine (Bitterlich, Mark G CIV NAVAIR, WD)
8. 09:49 AM - Re: Air Bottle Seal (Mark Pennington)
9. 10:07 AM - Re: Air Bottle Seal (JON BLAKE)
10. 11:30 AM - Re: Air Bottle Seal (Justin Drafts)
11. 12:54 PM - Re: Air Bottle Seal (Rico Jaeger)
12. 02:43 PM - CJ Mechanic needed (Craig Payne)
13. 03:42 PM - Re: Engine Stumble on Climb Out (Looigi)
14. 04:04 PM - Re: drunken attitude indicator in CJ (Ttail)
15. 04:38 PM - Re: Re: Engine Stumble on Climb Out (Frank Stelwagon)
16. 04:38 PM - Re: Re: Engine Stumble on Climb Out (A. Dennis Savarese)
17. 07:34 PM - Re: Re: Engine Stumble on Climb Out (Sam Sax)
18. 07:48 PM - Re: Re: Engine Stumble on Climb Out (Walter Lannon)
19. 08:04 PM - Re: Re: Engine Stumble on Climb Out (Roger Kemp)
________________________________ Message 1 _____________________________________
Time: 05:01:46 AM PST US
From: "Jill Gernetzke" <jill(at)m-14p.com (jill(at)m-14p.com)>
Subject: Re: Re: Chinese rebuild engine
Perhaps, the packing on the wobble pump or lack thereof, is causing you some
grief.
Was the engine test run at the factory? Mag timing is correct?
Just some thoughs/ideas.
Jill Gernetzke
M-14P, Inc.
4905 Flightline Drive
Kingman, AZ 86401
928-681-4400
www.m-14p.com
________________________________ Message 2 _____________________________________
Time: 05:46:10 AM PST US
Subject: Re: Re: Re: Chinese rebuild engine
From: Bob Graves <flibob(at)att.net (flibob(at)att.net)>
Thanks Jill. I replaced the wobble pump with new and it pumps fuel out at the
carb. I have not checked the timing on the mag. I should have paid more attention
to that part of the class when I was in Kingman.
GiddyUp,
Bob
On Jun 4, 2018, at 8:01 AM, Jill Gernetzke <jill(at)m-14p.com (jill(at)m-14p.com)> wrote:
Perhaps, the packing on the wobble pump or lack thereof, is causing you some
grief.
Was the engine test run at the factory? Mag timing is correct?
Just some thoughs/ideas.
Jill Gernetzke
M-14P, Inc.
4905 Flightline Drive
Kingman, AZ 86401
928-681-4400
www.m-14p.com
________________________________ Message 3 _____________________________________
Time: 05:51:54 AM PST US
From: JON BLAKE <jblake207(at)comcast.net (jblake207(at)comcast.net)>
Subject: Re: Engine Stumble on Climb Out
Holy double props Sappman...
> On June 1, 2018 at 10:40 AM doug sapp <dougsappllc(at)gmail.com (dougsappllc(at)gmail.com)> wrote:
>
> Not exactly a Yak, but has a bit of Yak dna.
> https://www.auctionzip.com/auction-lot/lot_C5F405A9AF?utm_source=azemail&utm_medium=email&utm_campaign=alerts https://www.auctionzip.com/auction-lot/lot_C5F405A9AF?utm_source=azemail&utm_medium=email&utm_campaign=alerts
>
> On Wed, May 30, 2018 at 11:44 PM, ggtyler <ggtyler(at)gmail.com (ggtyler(at)gmail.com) mailto:ggtyler(at)gmail.com (ggtyler(at)gmail.com) > wrote:
>
Just a bit of excitement in the Yak 52TW today.
Flight before last the engine did a hard stumble twice in succession on climb out.
I immediately swung back towards the field, but once I pulled back from 2400RPM
to 2100, it smoothed out. Gave it a few minutes, played with the throttle
and rpm's and it did not come back. Figured it was just a fouled plug.
I did a couple more hours of flying and starts/stops that day with no issues.
Went up again today, and on climb out, 2400 RPM, hard stumble. Then another, and
another, quickly turned back, pulled back to 2100 RPM, but the hard stumbles
proceeded to keep happening. At one point, I was pretty sure it was going to
quit running entirely. That 1.5 seconds or 2 seconds of stumbles in a row can
feel like an eternity.
It was running pretty badly, wife was in the back on her second flight ever with
me. I was pretty darn stressed, so more focused on getting back on the ground
safely than anything else. I did not think to do a mag check, but didn't really
have time, as I had only just made pattern altitude by the time I was on
downwind. I did scan through all the instruments, and all temps/pressures seemed
be normal.
On final, I must say, I just wanted us to be back on the ground NOW, and was getting
in a bit of a hurry to get down. Realizing that stress was dictating my
landing, I just kept telling myself "don't get in a hurry, hold it off, hold it
off". Not my best landing ever, but not one I need to be ashamed of. I did find
it hard to keep my legs from bouncing all over while taxing. Not often I get
that much adrenaline pumping.
Wife's a bit of a gear-head so knew everything was definitely not cool, but she
stayed calm and didn't freak out. It's nice to have someone to hug after a bit
of a scare.
Dropped a text to Vladimir Yastremski (he does my annuals). That guy always calls
me back, no matter what time of day. He's even on vacation right now. Talk
about service! Diagnostics will come later, and will update here.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=480530#480530 http://forums.matronics.com/viewtopic.php?p=480530#480530
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________________________________ Message 4 _____________________________________
Time: 06:49:37 AM PST US
Subject: Re: Engine Stumble on Climb Out
From: "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)>
Could very well be the infamous magneto coil issue.
A. Dennis Savarese
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 6/4/2018 8:51 AM, JON BLAKE wrote:
> Holy double props Sappman...
>
>> On June 1, 2018 at 10:40 AM doug sapp <dougsappllc(at)gmail.com (dougsappllc(at)gmail.com)> wrote:
>>
>> Not exactly a Yak, but has a bit of Yak dna.
>> https://www.auctionzip.com/auction-lot/lot_C5F405A9AF?utm_source=azemail&utm_medium=email&utm_campaign=alerts
>>
>> On Wed, May 30, 2018 at 11:44 PM, ggtyler <ggtyler(at)gmail.com (ggtyler(at)gmail.com)
>> <mailto:ggtyler(at)gmail.com (ggtyler(at)gmail.com)>> wrote:
>>
>> <mailto:ggtyler(at)gmail.com (ggtyler(at)gmail.com)>>
>>
>> Just a bit of excitement in the Yak 52TW today.
>>
>> Flight before last the engine did a hard stumble twice in
>> succession on climb out. I immediately swung back towards the
>> field, but once I pulled back from 2400RPM to 2100, it smoothed
>> out. Gave it a few minutes, played with the throttle and rpm's
>> and it did not come back. Figured it was just a fouled plug.
>>
>> I did a couple more hours of flying and starts/stops that day
>> with no issues.
>>
>> Went up again today, and on climb out, 2400 RPM, hard stumble.
>> Then another, and another, quickly turned back, pulled back to
>> 2100 RPM, but the hard stumbles proceeded to keep happening. At
>> one point, I was pretty sure it was going to quit running
>> entirely. That 1.5 seconds or 2 seconds of stumbles in a row can
>> feel like an eternity.
>>
>> It was running pretty badly, wife was in the back on her second
>> flight ever with me. I was pretty darn stressed, so more focused
>> on getting back on the ground safely than anything else. I did
>> not think to do a mag check, but didn't really have time, as I
>> had only just made pattern altitude by the time I was on
>> downwind. I did scan through all the instruments, and all
>> temps/pressures seemed be normal.
>>
>> On final, I must say, I just wanted us to be back on the ground
>> NOW, and was getting in a bit of a hurry to get down. Realizing
>> that stress was dictating my landing, I just kept telling myself
>> "don't get in a hurry, hold it off, hold it off". Not my best
>> landing ever, but not one I need to be ashamed of. I did find it
>> hard to keep my legs from bouncing all over while taxing. Not
>> often I get that much adrenaline pumping.
>>
>> Wife's a bit of a gear-head so knew everything was definitely not
>> cool, but she stayed calm and didn't freak out. It's nice to have
>> someone to hug after a bit of a scare.
>>
>> Dropped a text to Vladimir Yastremski (he does my annuals). That
>> guy always calls me back, no matter what time of day. He's even
>> on vacation right now. Talk about service! Diagnostics will come
>> later, and will update here.
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=480530#480530
>> <http://forums.matronics.com/viewtopic.php?p=480530#480530>
>>
>>
>>
>>
>>
>>
>> ===================================
>> List" rel="noreferrer"
>> target="_blank">http://www.matronics.com/Navigator?Yak-List
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>> eferrer" target="_blank">http://forums.matronics.com
>> ===================================
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>> errer" target="_blank">http://wiki.matronics.com
>> ===================================
>> b Site -
>> -Matt Dralle, List Admin.
>> rel="noreferrer"
>> target="_blank">http://www.matronics.com/contribution
>> ===================================
>>
>>
>>
>>
>
________________________________ Message 5 _____________________________________
Time: 06:56:26 AM PST US
From: Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)>
Subject: Re: Engine Stumble on Climb Out
Bad mag coil.
Doc
Sent from my iPad
> On Jun 4, 2018, at 7:51 AM, JON BLAKE <jblake207(at)comcast.net (jblake207(at)comcast.net)> wrote:
>
> Holy double props Sappman...
>
>> On June 1, 2018 at 10:40 AM doug sapp <dougsappllc(at)gmail.com (dougsappllc(at)gmail.com)> wrote:
>>
>> Not exactly a Yak, but has a bit of Yak dna.
>> https://www.auctionzip.com/auction-lot/lot_C5F405A9AF?utm_source=azemai
l&utm_medium=email&utm_campaign=alerts
>>
>>> On Wed, May 30, 2018 at 11:44 PM, ggtyler <ggtyler(at)gmail.com (ggtyler(at)gmail.com)> wrote:
>>>
>>> Just a bit of excitement in the Yak 52TW today.
>>>
>>> Flight before last the engine did a hard stumble twice in succession on c
limb out. I immediately swung back towards the field, but once I pulled back
from 2400RPM to 2100, it smoothed out. Gave it a few minutes, played with t
he throttle and rpm's and it did not come back. Figured it was just a fouled
plug.
>>>
>>> I did a couple more hours of flying and starts/stops that day with no is
sues.
>>>
>>> Went up again today, and on climb out, 2400 RPM, hard stumble. Then anot
her, and another, quickly turned back, pulled back to 2100 RPM, but the hard
stumbles proceeded to keep happening. At one point, I was pretty sure it wa
s going to quit running entirely. That 1.5 seconds or 2 seconds of stumbles i
n a row can feel like an eternity.
>>>
>>> It was running pretty badly, wife was in the back on her second flight e
ver with me. I was pretty darn stressed, so more focused on getting back on t
he ground safely than anything else. I did not think to do a mag check, but d
idn't really have time, as I had only just made pattern altitude by the time
I was on downwind. I did scan through all the instruments, and all temps/p
ressures seemed be normal.
>>>
>>> On final, I must say, I just wanted us to be back on the ground NOW, and
was getting in a bit of a hurry to get down. Realizing that stress was dict
ating my landing, I just kept telling myself "don't get in a hurry, hold it o
ff, hold it off". Not my best landing ever, but not one I need to be ashamed
of. I did find it hard to keep my legs from bouncing all over while taxing.
Not often I get that much adrenaline pumping.
>>>
>>> Wife's a bit of a gear-head so knew everything was definitely not cool, b
ut she stayed calm and didn't freak out. It's nice to have someone to hug af
ter a bit of a scare.
>>>
>>> Dropped a text to Vladimir Yastremski (he does my annuals). That guy alw
ays calls me back, no matter what time of day. He's even on vacation right n
ow. Talk about service! Diagnostics will come later, and will update here.
>>>
>>>
>>>
>>>
>>> Read this topic online here:
>>>
>>> http://forums.matronics.com/viewtopic.php?p=480530#480530
>>>
>>>
>>>
>>>
>>>
>>>
>>> ========================
===========
>>> List" rel="noreferrer" target="_blank">http://www.matronics.com/Navi
gator?Yak-List
>>> ========================
===========
>>> FORUMS -
>>> eferrer" target="_blank">http://forums.matronics.com
>>> ========================
===========
>>> WIKI -
>>> errer" target="_blank">http://wiki.matronics.com
>>> ========================
===========
>>> b Site -
>>> -Matt Dralle, List Admin.
>>> rel="noreferrer" target="_blank">http://www.matronics.com/contributi
on
>>> ========================
===========
>>>
>>>
>>>
>>
>
>
________________________________ Message 6 _____________________________________
Time: 08:41:09 AM PST US
From: Rico Jaeger <rocknpilot(at)hotmail.com (rocknpilot(at)hotmail.com)>
Subject: Air Bottle Seal
Does anyone have the hot tip for sealing air bottles? In pulling 3 apart, I
've found nylon seals, neoprene o-rings, gasket sealer, etc. The parts manu
al shows a nut, a washer and a "sealnig" (sic) ring. Is the washer a crush
washer? My emergency bottle fills to about half capacity - then hisses unti
l empty. I've been through the whole system and just replaced the bottle, b
ut now am having redundant issues trying to seal it.
HELP!
Thanks!
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 _____________________________________
Time: 09:38:09 AM PST US
From: "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich(at)navy.mil (mark.bitterlich(at)navy.mil)>
Subject: Re: Chinese rebuild engine
Out on the fringe ... but have you ever run a compression check on this engine?
--
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