Today's Message Index:
----------------------
1. 12:05 AM - engine running rough (Armin Riekert)
2. 12:41 AM - Re: engine running rough (Didier Blouzard)
3. 01:52 AM - Re: engine running rough (CD 2.0)
4. 04:10 AM - Re: Yak 18 T collection (Richard Goode)
5. 10:12 AM - Re: Re: engine running rough (A. Dennis Savarese)
6. 12:48 PM - Down but not out (doug sapp)
7. 01:01 PM - Re: Down but not out (Byron Fox)
8. 01:14 PM - Re: Down but not out (Gill Gutierrez)
9. 01:49 PM - Re: Down but not out (Donald & Marilyn Andrews)
10. 04:09 PM - PLAAF Insignia (Philip Nicholson)
11. 05:15 PM - Re: PLAAF Insignia (Walter Lannon)
12. 06:02 PM - Re: PLAAF Insignia (Sonic1)
13. 09:08 PM - Re: engine running rough (Javier Carrasco)
Message 1
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| Subject: | engine running rough |
Good morning,
I discovered my engine (M14P) showing the following characteristic:
It's not the smoothest engine I've seen but running ok from start. Then I
fly for some 30 minutes, have a break and when I go flying again, the engine
runs with quite more vibrations than before. It's not the frequent shakes
that I remember from an engine with a magneto coil turning bad. It's just
running evenly with noticeable more vibes than the flight before which
develops through the complete RPM range with peaks at certain RPM. This
behaviour is shown consistently every flying day.
So far I checked the mag timing being at 15.5 BTDC and synchronous, the
breaker gaps are correct, the plugs gaps are correct and the plugs tested.
Any ideas where to look now? All recommendations will be greatly
appreciated.
Cheers,
Armin
Message 2
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| Subject: | Re: engine running rough |
Now I would check the fuel system.
All filters, pump, leaks and so on
Then carburetor....but this is a whole complex story.
Didier
PostScriptum : We had also this kind of problem (motor working roughly
passing a certain RPM and it could go up to a total stop) with dammaged
hoses...
2011/8/17 Armin Riekert <ariekert@t-online.de>
> Good morning,****
>
> ** **
>
> I discovered my engine (M14P) showing the following characteristic:****
>
> ** **
>
> It=92s not the smoothest engine I=92ve seen but running ok from start. Th
en I
> fly for some 30 minutes, have a break and when I go flying again, the eng
ine
> runs with quite more vibrations than before. It=92s not the frequent shak
es
> that I remember from an engine with a magneto coil turning bad. It=92s ju
st
> running evenly with noticeable more vibes than the flight before which
> develops through the complete RPM range with peaks at certain RPM. This
> behaviour is shown consistently every flying day.****
>
> ** **
>
> So far I checked the mag timing being at 15.5 BTDC and synchronous, the
> breaker gaps are correct, the plugs gaps are correct and the plugs tested
.
> ****
>
> ** **
>
> Any ideas where to look now? All recommendations will be greatly
> appreciated.****
>
> ** **
>
> Cheers,****
>
> Armin****
>
> *
>
===========
===========
===========
===========
> *
>
>
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 3
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| Subject: | Re: engine running rough |
Armin,
Try to pay particular attention to determine it is "engine roughness or vibration"...
particularly when there are no engine instruments indicating trouble.
Roughness comes and goes whereas vibration is steady but may change or go away
at a different rpm setting.
What type/brand of spark plugs are you using?
Check for ignition lead misfire too... this can be caused by a faulty lead, faulty
connection at spark plug, or electrode pin not making contact with conductor
causing terminal well flashover.
Did you just fixed a magneto coil problem?.... When magneto coils go bad, they
usually break down when hot... the engine runs smoothly until a half hour into
flight before it gets rough... the next day, when the coil has cooled down, the
engine operates fine. The magneto will test fine on a test bench.
Propeller out of track or unbalanced?... out of balance propellers or harmonic
engine vibrations often result in cracks in spinners and engine baffling.
Also an intake leak could cause some roughness at high throttle settings because
the cylinders nearer to the leak might be getting less fuel air mix than those
further away. It doesn't take leaks in each intake pipe to ruin combustion.
A large enough leak in one place can ruin combustion in all the cylinders.
Carl
ariekert(at)t-online.de wrote:
> Good morning,
>
> I discovered my engine (M14P) showing the following characteristic:
>
> Its not the smoothest engine Ive seen but running ok from start. Then I fly for
some 30 minutes, have a break and when I go flying again, the engine runs with
quite more vibrations than before. Its not the frequent shakes that I remember
from an engine with a magneto coil turning bad. Its just running evenly with
noticeable more vibes than the flight before which develops through the complete
RPM range with peaks at certain RPM. This behaviour is shown consistently
every flying day.
>
> So far I checked the mag timing being at 15.5 BTDC and synchronous, the breaker
gaps are correct, the plugs gaps are correct and the plugs tested.
>
> Any ideas where to look now? All recommendations will be greatly appreciated.
>
> Cheers,
> Armin
>
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=349729#349729
Message 4
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| Subject: | Yak 18 T collection |
Hi Stewart,
We have3 or 4 that are used for serious IFR in the UK.
R
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of SRGraham
Sent: Wednesday, August 17, 2011 6:27 AM
Subject: Yak-List: Yak 18 T collection
Recently there was a request regarding numbers of yak 18 T aircraft around
the world.
. Did we ever come to a number?
. Do we know whether any of these aircraft are flying IFR, or are
all of them very far aircraft?
.
Dr Stewart Graham MBBS FRACP Consultant Rheumatologist
Prov No. 462449A ABN-79105443463
Main Office: Suite1, 7 High St. Launceston, Tas 7250.
Clinics: Queenstown, King island, Burnie & Devonport
Email: srgrheumatology@bigpond.com Ph: 0363348631 Fax: 0363348547
--
This message has been scanned for viruses and
dangerous content by <http://www.invictawiz.com/> Invictawiz MailScanner,
and is
believed to be clean.
Message 5
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| Subject: | Re: engine running rough |
Also take a look at the rubber engine mount bushings. If deteriorated as
evidence of cracking around the exposed part, (the part you can see
easily) they need to be replaced. As with any aircraft engine, bad
engine mount rubber bushings will definitely contribute to engine
vibrations.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (cell)
Skype: Yakguy1
www.yak-52.com
On 8/17/2011 3:49 AM, CD 2.0 wrote:
> --> Yak-List message posted by: "CD 2.0"<dbowie2007@hotmail.com>
>
> Armin,
>
> Try to pay particular attention to determine it is "engine roughness or vibration"...
particularly when there are no engine instruments indicating trouble.
Roughness comes and goes whereas vibration is steady but may change or go away
at a different rpm setting.
>
> What type/brand of spark plugs are you using?
>
> Check for ignition lead misfire too... this can be caused by a faulty lead, faulty
connection at spark plug, or electrode pin not making contact with conductor
causing terminal well flashover.
>
> Did you just fixed a magneto coil problem?.... When magneto coils go bad, they
usually break down when hot... the engine runs smoothly until a half hour into
flight before it gets rough... the next day, when the coil has cooled down,
the engine operates fine. The magneto will test fine on a test bench.
>
> Propeller out of track or unbalanced?... out of balance propellers or harmonic
engine vibrations often result in cracks in spinners and engine baffling.
>
> Also an intake leak could cause some roughness at high throttle settings because
the cylinders nearer to the leak might be getting less fuel air mix than those
further away. It doesn't take leaks in each intake pipe to ruin combustion.
A large enough leak in one place can ruin combustion in all the cylinders.
>
> Carl
>
>
> ariekert(at)t-online.de wrote:
>> Good morning,
>>
>> I discovered my engine (M14P) showing the following characteristic:
>>
>> Its not the smoothest engine Ive seen but running ok from start. Then I fly
for some 30 minutes, have a break and when I go flying again, the engine runs
with quite more vibrations than before. Its not the frequent shakes that I remember
from an engine with a magneto coil turning bad. Its just running evenly
with noticeable more vibes than the flight before which develops through the complete
RPM range with peaks at certain RPM. This behaviour is shown consistently
every flying day.
>>
>> So far I checked the mag timing being at 15.5 BTDC and synchronous, the breaker
gaps are correct, the plugs gaps are correct and the plugs tested.
>>
>> Any ideas where to look now? All recommendations will be greatly appreciated.
>>
>> Cheers,
>> Armin
>>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=349729#349729
>
>
Message 6
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| Subject: | Down but not out |
This is a update from Doug and Kathleen to all our RPA, RAF, Back Country
pilots and Supercub.org friends. I hope to buy everyone of you a beer,
shake your hand, and personally tell you thanks for all of your phone calls,
offers of help with the salvage, offers of rides back home to Omak, your
many letters, emails, cards, fruit baskets and home cooked meals delivered
to our door by many of our local flying friends and RPA members. Thank you,
every one of you. We are truly blessed to be counted in the number of the
folks you all call friends.
As many of you know as a result of the accident in our cub, Kathleen and I
both have badly compressed and fractured vertebrae, broken ribs and some
stitches. At this point the stitches are out and the ribs have just about
healed. Our backs are still a long way from mended and we are still in
upper body braces. We are told that it will be another 6-8 months before
we are back to "close to normal".
Special thanks to our very good friends Hal Morley and Laura Long, who
watched over us from the moment the emergency folks at Kalispell Regional
whould let them in to see us. Laura took us into her beautiful home,
pampered us and made us feel like family, a few days later they arranged for
a Angel Flight aircraft to take us back to Omak. They are true friends,
guardian angels in fact, I honestly do not know how we can ever repay them.
Thanks also to all the folks from the RAF (Recreational Aviation Foundation)
who worried over us every literally day in the hospital and continue to
check on us via email and phone calls now that we are at home recovering.
Kathleen and I had been members only 24 hours when the accident happened,
yet we were treated like life time members. We will forever be grateful for
the care and attention they gave us, both in getting us out of the wreckage,
and the continued well wishes and show of support. This is an outstanding
group of folks with a very worthwhile mission, if you have a interest in
back country flying you should look into the RAF.
The show of support and concern from the RPA membership has been heart
warming indeed. We have received literally hundreds of calls, emails, fruit
baskets, prepared meals, and personal visits from members of our CJ and Yak
community. I cannot start to tell you how much this means to Kathleen and
me. Very humbling indeed, thank you all very much.
We are in the office most days, shipping most every day @ 9:00 am PST, so
contrary to some stories we are not closed, we are indeed open for business.
If we don't answer the phone we are most likely in Spokane for rehab.
Please leave a message on the voice mail, we will return all calls as soon
as we return.
Again, thank you all for your support.
All the best from Omak, still Yakin,
Doug and Kathleen
Message 7
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| Subject: | Re: Down but not out |
Thanks so much for the update, Doug. Love to you both. ...Blitz
On Wed, Aug 17, 2011 at 12:43 PM, doug sapp <dougsappllc@gmail.com> wrote:
> This is a update from Doug and Kathleen to all our RPA, RAF, Back Country
> pilots and Supercub.org friends. I hope to buy everyone of you a beer,
> shake your hand, and personally tell you thanks for all of your phone calls,
> offers of help with the salvage, offers of rides back home to Omak, your
> many letters, emails, cards, fruit baskets and home cooked meals delivered
> to our door by many of our local flying friends and RPA members. Thank you,
> every one of you. We are truly blessed to be counted in the number of the
> folks you all call friends.
>
> As many of you know as a result of the accident in our cub, Kathleen and I
> both have badly compressed and fractured vertebrae, broken ribs and some
> stitches. At this point the stitches are out and the ribs have just about
> healed. Our backs are still a long way from mended and we are still in
> upper body braces. We are told that it will be another 6-8 months before
> we are back to "close to normal".
>
> Special thanks to our very good friends Hal Morley and Laura Long, who
> watched over us from the moment the emergency folks at Kalispell Regional
> whould let them in to see us. Laura took us into her beautiful home,
> pampered us and made us feel like family, a few days later they arranged for
> a Angel Flight aircraft to take us back to Omak. They are true friends,
> guardian angels in fact, I honestly do not know how we can ever repay them.
>
> Thanks also to all the folks from the RAF (Recreational Aviation
> Foundation) who worried over us every literally day in the hospital and
> continue to check on us via email and phone calls now that we are at home
> recovering. Kathleen and I had been members only 24 hours when the accident
> happened, yet we were treated like life time members. We will forever
> be grateful for the care and attention they gave us, both in getting us out
> of the wreckage, and the continued well wishes and show of support. This is
> an outstanding group of folks with a very worthwhile mission, if you have a
> interest in back country flying you should look into the RAF.
>
> The show of support and concern from the RPA membership has been heart
> warming indeed. We have received literally hundreds of calls, emails, fruit
> baskets, prepared meals, and personal visits from members of our CJ and Yak
> community. I cannot start to tell you how much this means to Kathleen and
> me. Very humbling indeed, thank you all very much.
>
> We are in the office most days, shipping most every day @ 9:00 am PST, so
> contrary to some stories we are not closed, we are indeed open for business.
> If we don't answer the phone we are most likely in Spokane for rehab.
> Please leave a message on the voice mail, we will return all calls as soon
> as we return.
>
> Again, thank you all for your support.
>
> All the best from Omak, still Yakin,
>
> Doug and Kathleen
>
> *
>
> *
>
>
--
... Blitz
Byron M. Fox
80 Milland Drive
Mill Valley, CA 94941
415-307-2405
Message 8
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| Subject: | Down but not out |
HAPPY TO HEAR YOU BOTH ARE ON THE MEND!
Gill
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of doug sapp
Sent: Wednesday, August 17, 2011 12:43 PM
Subject: Yak-List: Down but not out
This is a update from Doug and Kathleen to all our RPA, RAF, Back Country
pilots and Supercub.org friends. I hope to buy everyone of you a beer,
shake your hand, and personally tell you thanks for all of your phone calls,
offers of help with the salvage, offers of rides back home to Omak, your
many letters, emails, cards, fruit baskets and home cooked meals delivered
to our door by many of our local flying friends and RPA members. Thank you,
every one of you. We are truly blessed to be counted in the number of the
folks you all call friends.
As many of you know as a result of the accident in our cub, Kathleen and I
both have badly compressed and fractured vertebrae, broken ribs and some
stitches. At this point the stitches are out and the ribs have just about
healed. Our backs are still a long way from mended and we are still in
upper body braces. We are told that it will be another 6-8 months before
we are back to "close to normal".
Special thanks to our very good friends Hal Morley and Laura Long, who
watched over us from the moment the emergency folks at Kalispell Regional
whould let them in to see us. Laura took us into her beautiful home,
pampered us and made us feel like family, a few days later they arranged for
a Angel Flight aircraft to take us back to Omak. They are true friends,
guardian angels in fact, I honestly do not know how we can ever repay them.
Thanks also to all the folks from the RAF (Recreational Aviation Foundation)
who worried over us every literally day in the hospital and continue to
check on us via email and phone calls now that we are at home recovering.
Kathleen and I had been members only 24 hours when the accident happened,
yet we were treated like life time members. We will forever be grateful for
the care and attention they gave us, both in getting us out of the wreckage,
and the continued well wishes and show of support. This is an outstanding
group of folks with a very worthwhile mission, if you have a interest in
back country flying you should look into the RAF.
The show of support and concern from the RPA membership has been heart
warming indeed. We have received literally hundreds of calls, emails, fruit
baskets, prepared meals, and personal visits from members of our CJ and Yak
community. I cannot start to tell you how much this means to Kathleen and
me. Very humbling indeed, thank you all very much.
We are in the office most days, shipping most every day @ 9:00 am PST, so
contrary to some stories we are not closed, we are indeed open for business.
If we don't answer the phone we are most likely in Spokane for rehab.
Please leave a message on the voice mail, we will return all calls as soon
as we return.
Again, thank you all for your support.
All the best from Omak, still Yakin,
Doug and Kathleen
Message 9
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| Subject: | Down but not out |
Thanks for the good news Doug and Kathleen.
Don and Marilyn Andrews
_____
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of doug sapp
Sent: Wednesday, August 17, 2011 12:43 PM
Subject: Yak-List: Down but not out
This is a update from Doug and Kathleen to all our RPA, RAF, Back Country
pilots and Supercub.org friends. I hope to buy everyone of you a beer,
shake your hand, and personally tell you thanks for all of your phone calls,
offers of help with the salvage, offers of rides back home to Omak, your
many letters, emails, cards, fruit baskets and home cooked meals delivered
to our door by many of our local flying friends and RPA members. Thank you,
every one of you. We are truly blessed to be counted in the number of the
folks you all call friends.
As many of you know as a result of the accident in our cub, Kathleen and I
both have badly compressed and fractured vertebrae, broken ribs and some
stitches. At this point the stitches are out and the ribs have just about
healed. Our backs are still a long way from mended and we are still in
upper body braces. We are told that it will be another 6-8 months before
we are back to "close to normal".
Special thanks to our very good friends Hal Morley and Laura Long, who
watched over us from the moment the emergency folks at Kalispell Regional
whould let them in to see us. Laura took us into her beautiful home,
pampered us and made us feel like family, a few days later they arranged for
a Angel Flight aircraft to take us back to Omak. They are true friends,
guardian angels in fact, I honestly do not know how we can ever repay them.
Thanks also to all the folks from the RAF (Recreational Aviation Foundation)
who worried over us every literally day in the hospital and continue to
check on us via email and phone calls now that we are at home recovering.
Kathleen and I had been members only 24 hours when the accident happened,
yet we were treated like life time members. We will forever be grateful for
the care and attention they gave us, both in getting us out of the wreckage,
and the continued well wishes and show of support. This is an outstanding
group of folks with a very worthwhile mission, if you have a interest in
back country flying you should look into the RAF.
The show of support and concern from the RPA membership has been heart
warming indeed. We have received literally hundreds of calls, emails, fruit
baskets, prepared meals, and personal visits from members of our CJ and Yak
community. I cannot start to tell you how much this means to Kathleen and
me. Very humbling indeed, thank you all very much.
We are in the office most days, shipping most every day @ 9:00 am PST, so
contrary to some stories we are not closed, we are indeed open for business.
If we don't answer the phone we are most likely in Spokane for rehab.
Please leave a message on the voice mail, we will return all calls as soon
as we return.
Again, thank you all for your support.
All the best from Omak, still Yakin,
Doug and Kathleen
Message 10
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|
Apologies for the repeat post (lost email).
Does anyone have good quality GIF/JPG files of the chinese
airforce insignia they could forward off-list?
If anyone is interested, Transport Canada states that the decals are
"24" in height by 59" in length to be displayed on sides and top of
the right wing and bottom of the left wing with the same dimension."
I guess they did their homework....
Thanks,
Phil Nicholson
C-FEPN
Message 11
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| Subject: | Re: PLAAF Insignia |
Phil;
Interesting. TC certainly does specify minimum dimensions and other details
for registration marks.
They assuredly do not specify PLAAF, or any other military or countries
markings, dimensions, or any other information.
Where are you located. I have a "pounce" pattern for the insignia if you
can't find anything else. In Oliver, BC.
Walt
----- Original Message -----
From: "Philip Nicholson" <pednicholson@gmail.com>
Sent: Wednesday, August 17, 2011 4:06 PM
Subject: Yak-List: PLAAF Insignia
>
> Apologies for the repeat post (lost email).
> Does anyone have good quality GIF/JPG files of the chinese
> airforce insignia they could forward off-list?
> If anyone is interested, Transport Canada states that the decals are
> "24" in height by 59" in length to be displayed on sides and top of
> the right wing and bottom of the left wing with the same dimension."
> I guess they did their homework....
>
> Thanks,
>
> Phil Nicholson
> C-FEPN
>
>
>
Message 12
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| Subject: | Re: PLAAF Insignia |
Maybe this can be scaled up?...
http://upload.wikimedia.org/wikipedia/commons/thumb/9/91/Roundel_of_the_Peoples_Liberation_Army_Air_Force.svg/2000px-Roundel_of_the_Peoples_Liberation_Army_Air_Force.svg.png
Jeff.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=349822#349822
Message 13
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| Subject: | Re: engine running rough |
Do you have a autoplug convertion?
=C2-
If not try that, I had a similar issue specially in hot days, try to keep t
he cyl heat temp close to 180C and don't let it cool down as when you dive
for landin during a few minuts at low settings play with the shoutter to ke
ep the temps around 170 180.
=C2-
Hope that helps.
=C2-
JC
--- On Wed, 8/17/11, Armin Riekert <ariekert@t-online.de> wrote:
From: Armin Riekert <ariekert@t-online.de>
Subject: Yak-List: engine running rough
Good morning,
=C2-
I discovered my engine (M14P) showing the following characteristic:
=C2-
It=99s not the smoothest engine I=99ve seen but running ok from
start. Then I fly for some 30 minutes, have a break and when I go flying a
gain, the engine runs with quite more vibrations than before. It=99s
not the frequent shakes that I remember from an engine with a magneto coil
turning bad. It=99s just running evenly with noticeable more vibes th
an the flight before which develops through the complete RPM range with pea
ks at certain RPM. This behaviour is shown consistently every flying day.
=C2-
So far I checked the mag timing being at 15.5 BTDC and synchronous, the bre
aker gaps are correct, the plugs gaps are correct and the plugs tested.
=C2-
Any ideas where to look now? All recommendations will be greatly appreciate
d.
=C2-
Cheers,
Armin
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