Today's Message Index:
----------------------
1. 04:04 AM - Re: Throttle (pilko2)
2. 04:43 AM - Re: Throttle (Didier Blouzard)
3. 05:00 AM - Re: Throttle (Vic)
4. 05:24 AM - Re: Re: Throttle (Didier Blouzard)
5. 05:27 AM - Re: Fuel gauges (Vic)
6. 05:47 AM - Re: Re: Fuel gauges (Didier Blouzard)
7. 09:55 AM - Re: Throttle (pilko2)
8. 12:24 PM - Re: Throttle (Didier Blouzard)
9. 01:26 PM - Re: Throttle (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
10. 02:16 PM - Re: Throttle (Didier Blouzard)
11. 02:26 PM - Re: Throttle (Jan Mevis)
12. 02:37 PM - (delfin)
13. 03:16 PM - Re: Throttle (Keith Pickford)
14. 07:46 PM - CO (bob)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
That's likely carburettor icing restricting the butterfly/linkage movement.
I've had the same and I now select carb heat on finals if there is any
moisture in the air.
Fly safe
kp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of tigeryak18t
Sent: 17 October 2009 22:17
Subject: Yak-List: Throttle
--> <didier.blouzard@gmail.com>
Now the other subject,
I told you in the precedent post that I had 2 subjects....you should not be
sleeping. In France it is 11h30pm but you are just waking up, so good day to
all.
Now I was checking my fuel gauges up there in the sky and lining up I came
to the final. On short, I reduced all, and I had a surprise, the throttle
did not want to go under 50%.
So I continued and landed at 50%...so now I can tell you that it is possible
to land on a grass strip of 700m at 50% full fine pitch and stop at the
end...
I went at 50% to make some fuel, and stopped the engine.
Then, I started again to taxi to my hangar and made some engine runup.
An dthen surprise, it worked fine.
I do not know what happened, but it is a little frightenning. Not being able
to reduce..
Is this something that already happenned to someone??
Anyone have an idea of what happenned.???
O now I am finished for the weekend, so good weekend to all and fly safe
Didier HA-JAC 18T
--------
Didier Tiger YAK18T
Member of Commemorative Air Force
French Wing
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268350#268350
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
That's an interesting one. I thought that the M14P was very little subject
to carburator icing. OK yes very interesting. Even with minus 15 I never had
carb icing on that motor. But that sound like it as this effect disappear
after taxiing.
Has anyone else experienced such thing??
Thanks.
Now I will set the carb heat on at each landing.
Didier
2009/10/18 pilko2 <pilko2@btinternet.com>
>
> That's likely carburettor icing restricting the butterfly/linkage movement.
>
> I've had the same and I now select carb heat on finals if there is any
> moisture in the air.
>
> Fly safe
> kp
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of tigeryak18t
> Sent: 17 October 2009 22:17
> To: yak-list@matronics.com
> Subject: Yak-List: Throttle
>
> --> <didier.blouzard@gmail.com>
>
> Now the other subject,
>
> I told you in the precedent post that I had 2 subjects....you should not be
> sleeping. In France it is 11h30pm but you are just waking up, so good day
> to
> all.
>
> Now I was checking my fuel gauges up there in the sky and lining up I came
> to the final. On short, I reduced all, and I had a surprise, the throttle
> did not want to go under 50%.
> So I continued and landed at 50%...so now I can tell you that it is
> possible
> to land on a grass strip of 700m at 50% full fine pitch and stop at the
> end...
> I went at 50% to make some fuel, and stopped the engine.
> Then, I started again to taxi to my hangar and made some engine runup.
> An dthen surprise, it worked fine.
> I do not know what happened, but it is a little frightenning. Not being
> able
> to reduce..
> Is this something that already happenned to someone??
> Anyone have an idea of what happenned.???
>
> O now I am finished for the weekend, so good weekend to all and fly safe
>
> Didier HA-JAC 18T
>
> --------
> Didier Tiger YAK18T
> Member of Commemorative Air Force
> French Wing
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=268350#268350
>
>
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hello Didier,
I would check the throttle linkage too. Make sure that the copper tube is really
fixed and no movement is lost between the levers in the cockpit and the carb.
Ice in the carb should prevent any movement of the throttle, did you notice
that this was the case ?
Good luck with trouble shooting.
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268388#268388
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
OK good sugestion,
I'll have a look to that also.
Thanks and good day
regards
Didier
2009/10/18 Vic <vicmolnar@aol.com>
>
> Hello Didier,
> I would check the throttle linkage too. Make sure that the copper tube is
> really fixed and no movement is lost between the levers in the cockpit and
> the carb. Ice in the carb should prevent any movement of the throttle, did
> you notice that this was the case ?
> Good luck with trouble shooting.
> Vic
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=268388#268388
>
>
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hello Didier,
we had the same problem this year with our 18 T. The reason for wrong fuel readings
is the fact that the float is no longer floating as the plastic foam has
shrinked a lot and the float does no longer produce enough lift. Did you use auto
gasoline a lot in recent years as we do ? I wonder if somebody else had misreadings
of the fuel state with other Yak types as well and did he check the
floats if there is the same foam type installed. There are sheet metal floats
too on other Russian aircraft which will not shrink with modern fuel but could
develop a leak and will drown in consequence.When you take out the fuel sender
unit and move the float lever by hand you should get perfect readings on the
gauge for all positions.
You could add a very light spring to the float to assist as we did, but basically
Id like to know if someone could provide a metal float.
By the way, we had in the past uneven readings betweeen the left and right wing
tank in flight, so we suspect having been fooled by sinking floats for some
time.
Kind regards
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268392#268392
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
OK that's very interesting Vic,
I have this problem since not a very long time but the annoying thing is
that when in flight since about half an hour an hour it comes back to
normal. Probably the floaters sinks and with vibrations it come back
floating....
I will ask my operator in Hungary and also Termikas in Lithuania and I'll
let you know what they say. Then I will also ask friend builders. they are
really very smart and see what they think about that floaters thing. If it
can be repaired or replaced.
I have heard about these metal floats. I'll tell you also if Termikas has
them.
Thanks a lot for your answers.
regards
Didier
2009/10/18 Vic <vicmolnar@aol.com>
>
> Hello Didier,
> we had the same problem this year with our 18 T. The reason for wrong fue
l
> readings is the fact that the float is no longer floating as the plastic
> foam has shrinked a lot and the float does no longer produce enough lift.
> Did you use auto gasoline a lot in recent years as we do ? I wonder if
> somebody else had misreadings of the fuel state with other Yak types as w
ell
> and did he check the floats if there is the same foam type installed. The
re
> are sheet metal floats too on other Russian aircraft which will not shrin
k
> with modern fuel but could develop a leak and will drown in consequence.W
hen
> you take out the fuel sender unit and move the float lever by hand you
> should get perfect readings on the gauge for all positions.
> You could add a very light spring to the float to assist as we did, but
> basically I=B4d like to know if someone could provide a metal float.
> By the way, we had in the past uneven readings betweeen the left and rig
ht
> wing tank in flight, so we suspect having been fooled by sinking floats f
or
> some time.
> Kind regards
> Vic
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=268392#268392
>
>
===========
===========
===========
===========
>
>
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Carburettor icing is not necessarily relevant to ambient temperature.
Critical atmospheric water will not be present at -15C.
Carb icing is quite common in the warm moist UK conditions, especially at
low manifold settings.
BEWARE !
_____
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Didier Blouzard
Sent: 18 October 2009 12:41
Subject: Re: Yak-List: Throttle
That's an interesting one. I thought that the M14P was very little subject
to carburator icing. OK yes very interesting. Even with minus 15 I never had
carb icing on that motor. But that sound like it as this effect disappear
after taxiing.
Has anyone else experienced such thing??
Thanks.
Now I will set the carb heat on at each landing.
Didier
2009/10/18 pilko2 <pilko2@btinternet.com>
That's likely carburettor icing restricting the butterfly/linkage movement.
I've had the same and I now select carb heat on finals if there is any
moisture in the air.
Fly safe
kp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of tigeryak18t
Sent: 17 October 2009 22:17
Subject: Yak-List: Throttle
--> <didier.blouzard@gmail.com>
Now the other subject,
I told you in the precedent post that I had 2 subjects....you should not be
sleeping. In France it is 11h30pm but you are just waking up, so good day to
all.
Now I was checking my fuel gauges up there in the sky and lining up I came
to the final. On short, I reduced all, and I had a surprise, the throttle
did not want to go under 50%.
So I continued and landed at 50%...so now I can tell you that it is possible
to land on a grass strip of 700m at 50% full fine pitch and stop at the
end...
I went at 50% to make some fuel, and stopped the engine.
Then, I started again to taxi to my hangar and made some engine runup.
An dthen surprise, it worked fine.
I do not know what happened, but it is a little frightenning. Not being able
to reduce..
Is this something that already happenned to someone??
Anyone have an idea of what happenned.???
O now I am finished for the weekend, so good weekend to all and fly safe
Didier HA-JAC 18T
--------
Didier Tiger YAK18T
Member of Commemorative Air Force
French Wing
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268350#268350
==========
rget="_blank">http://www.matronics.com/Navigator?Yak-List
==========
http://forums.matronics.com
==========
le, List Admin.
="_blank">http://www.matronics.com/contribution
==========
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
OK Ok I was not aware that the M14P was particularly sensitive to carb
icing. I will put full warm now on low pa..
But I will also check the tube....for sure.
Thanks
Kind rgards
2009/10/18 pilko2 <pilko2@btinternet.com>
> Carburettor icing is not necessarily relevant to ambient temperature.
> Critical atmospheric water will not be present at -15C.
>
> Carb icing is quite common in the warm moist UK conditions, especially at
> low manifold settings.
>
> BEWARE !
>
> ------------------------------
> *From:* owner-yak-list-server@matronics.com [mailto:
> owner-yak-list-server@matronics.com] *On Behalf Of *Didier Blouzard
> *Sent:* 18 October 2009 12:41
> *To:* yak-list@matronics.com
> *Subject:* Re: Yak-List: Throttle
>
> That's an interesting one. I thought that the M14P was very little subject
> to carburator icing. OK yes very interesting. Even with minus 15 I never had
> carb icing on that motor. But that sound like it as this effect disappear
> after taxiing.
> Has anyone else experienced such thing??
> Thanks.
> Now I will set the carb heat on at each landing.
>
> Didier
>
>
> 2009/10/18 pilko2 <pilko2@btinternet.com>
>
>>
>> That's likely carburettor icing restricting the butterfly/linkage
>> movement.
>>
>> I've had the same and I now select carb heat on finals if there is any
>> moisture in the air.
>>
>> Fly safe
>> kp
>>
>> -----Original Message-----
>> From: owner-yak-list-server@matronics.com
>> [mailto:owner-yak-list-server@matronics.com] On Behalf Of tigeryak18t
>> Sent: 17 October 2009 22:17
>> To: yak-list@matronics.com
>> Subject: Yak-List: Throttle
>>
>> --> <didier.blouzard@gmail.com>
>>
>> Now the other subject,
>>
>> I told you in the precedent post that I had 2 subjects....you should not
>> be
>> sleeping. In France it is 11h30pm but you are just waking up, so good day
>> to
>> all.
>>
>> Now I was checking my fuel gauges up there in the sky and lining up I came
>> to the final. On short, I reduced all, and I had a surprise, the throttle
>> did not want to go under 50%.
>> So I continued and landed at 50%...so now I can tell you that it is
>> possible
>> to land on a grass strip of 700m at 50% full fine pitch and stop at the
>> end...
>> I went at 50% to make some fuel, and stopped the engine.
>> Then, I started again to taxi to my hangar and made some engine runup.
>> An dthen surprise, it worked fine.
>> I do not know what happened, but it is a little frightenning. Not being
>> able
>> to reduce..
>> Is this something that already happenned to someone??
>> Anyone have an idea of what happenned.???
>>
>> O now I am finished for the weekend, so good weekend to all and fly safe
>>
>> Didier HA-JAC 18T
>>
>> --------
>> Didier Tiger YAK18T
>> Member of Commemorative Air Force
>> French Wing
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=268350#268350
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> ==========
>> rget="_blank">http://www.matronics.com/Navigator?Yak-List
>> ==========
>> http://forums.matronics.com
>> ==========
>> le, List Admin.
>> ="_blank">http://www.matronics.com/contribution
>> ==========
>>
>>
>>
>>
>
>
> --
> Didier BLOUZARD
> <didier.blouzard@gmail.com>didier.blouzard@gmail.com
> 0624243672
>
> *
>
> href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/Navigator?Yak-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c*
>
> *
>
> *
>
>
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Depends who you talk to Didier. I've owned a YAK-50 for over 9 years in North
Carolina and have not once experienced carb ice. Not that I am aware of anyway.
On the other hand, many people on this list swear to the fact that it has happened
to them more than once.
I think we are ALL correct. I know it hasn't happened to me, but I believe it
has happened to others.
The carb we use in the M-14 is a pressure carb. But pressure carbs, even though
very close to being defined as "single point fuel injection" per se, still do
have a Venturi. Thus it is entirely feasible that they could develop ice.
Just as a matter of curiosity, does your airplane have a carb inlet temp gage?
My YAK does. It is marked to basically show the "danger range" where ice can
happen. Again, on my particular airplane, there is no "carb heat" .... there
is instead an intake air flap that can be closed, thus forcing the carb to draw
in air from the back of the engine, which would be much warmer. But it does
not actually take hot air off of a heat muff, such as the kind that is used
for cabin heating. The Yak-50 does not have any cabin heat. Which... is not
really a good thing.
It strikes me that possibly carb icing has a ton of factors involved that make
it hard to predict, and make and model of aircraft might even be a factor. I
do not know.
Still waiting for my own very first carb ice experience, but until it happens I
don't think I will be opening and closing the carb ram air inlet flap on every
landing. I suspect your design is totally different than my own.
Mark Bitterlich
________________________________
From: owner-yak-list-server@matronics.com on behalf of Didier Blouzard
Sent: Sun 10/18/2009 3:21 PM
Subject: Re: Yak-List: Throttle
OK Ok I was not aware that the M14P was particularly sensitive to carb icing. I
will put full warm now on low pa..
But I will also check the tube....for sure.
Thanks
Kind rgards
2009/10/18 pilko2 <pilko2@btinternet.com>
Carburettor icing is not necessarily relevant to ambient temperature. Critical
atmospheric water will not be present at -15C.
Carb icing is quite common in the warm moist UK conditions, especially at low
manifold settings.
BEWARE !
________________________________
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Didier Blouzard
Sent: 18 October 2009 12:41
To: yak-list@matronics.com
Subject: Re: Yak-List: Throttle
That's an interesting one. I thought that the M14P was very little subject to
carburator icing. OK yes very interesting. Even with minus 15 I never had carb
icing on that motor. But that sound like it as this effect disappear after taxiing.
Has anyone else experienced such thing??
Thanks.
Now I will set the carb heat on at each landing.
Didier
2009/10/18 pilko2 <pilko2@btinternet.com>
That's likely carburettor icing restricting the butterfly/linkage movement.
I've had the same and I now select carb heat on finals if there is any
moisture in the air.
Fly safe
kp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of tigeryak18t
Sent: 17 October 2009 22:17
To: yak-list@matronics.com
Subject: Yak-List: Throttle
--> <didier.blouzard@gmail.com>
Now the other subject,
I told you in the precedent post that I had 2 subjects....you should not be
sleeping. In France it is 11h30pm but you are just waking up, so good day to
all.
Now I was checking my fuel gauges up there in the sky and lining up I came
to the final. On short, I reduced all, and I had a surprise, the throttle
did not want to go under 50%.
So I continued and landed at 50%...so now I can tell you that it is possible
to land on a grass strip of 700m at 50% full fine pitch and stop at the
end...
I went at 50% to make some fuel, and stopped the engine.
Then, I started again to taxi to my hangar and made some engine runup.
An dthen surprise, it worked fine.
I do not know what happened, but it is a little frightenning. Not being able
to reduce..
Is this something that already happenned to someone??
Anyone have an idea of what happenned.???
O now I am finished for the weekend, so good weekend to all and fly safe
Didier HA-JAC 18T
--------
Didier Tiger YAK18T
Member of Commemorative Air Force
French Wing
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268350#268350
==========
rget="_blank">http://www.matronics.com/Navigator?Yak-List
==========
http://forums.matronics.com <http://forums.matronics.com/>
==========
le, List Admin.
="_blank">http://www.matronics.com/contribution
==========
--
Didier BLOUZARD
<mailto:didier.blouzard@gmail.com> didier.blouzard@gmail.com
0624243672
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/Navigator?Yak-List
href="http://forums.matronics.com <http://forums.matronics.com/> ">http://forums.matronics.com <http://forums.matronics.com/>
href="http://www.matronics.com/contribution">http://www.matronics.com/c
et="_blank">http://www.matronics.com/Navigator?Yak-List
a>http://forums.matronics.com <http://forums.matronics.com/>
_blank">http://www.matronics.com/contribution
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Mark,
I must say that the thing that happened seems more mechanical than ice. But
I will examine all possibilities.
The only thing I know is that I did not dreamed the problem. I was with a
friend owner of a 52. He is a comercial pilot. And both of us could see that
the motor did not want to go under 50% even if I pushed hard on the throtle
lever. We even tried to check the pitch (going to coarse and back to fine).
After turning off the motor and refueling. At the next start everything came
back to normal. But I did not tried the carb heat (was off) and I did not
looked closely to the throtle lever. Was it completely down or was it
blocked I am not sure.
But it could be that it is a problem of the cable in the copper
tube....don't know....I moved the throtle after turning off the motor and it
looks fine... . I will check all this tomorrow and hoppefully come back with
something.
When something like this happen I like to find both cause and solution...for
the moment I just had the resukt...that's bad!!!
thanks very much
Kind regards
Didier
2009/10/18 Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E <
mark.bitterlich@navy.mil>
> MALS-14 64E" <mark.bitterlich@navy.mil>
>
> Depends who you talk to Didier. I've owned a YAK-50 for over 9 years in
> North Carolina and have not once experienced carb ice. Not that I am aware
> of anyway.
>
> On the other hand, many people on this list swear to the fact that it has
> happened to them more than once.
>
> I think we are ALL correct. I know it hasn't happened to me, but I believe
> it has happened to others.
>
> The carb we use in the M-14 is a pressure carb. But pressure carbs, even
> though very close to being defined as "single point fuel injection" per se,
> still do have a Venturi. Thus it is entirely feasible that they could
> develop ice.
>
> Just as a matter of curiosity, does your airplane have a carb inlet temp
> gage? My YAK does. It is marked to basically show the "danger range" where
> ice can happen. Again, on my particular airplane, there is no "carb heat"
> .... there is instead an intake air flap that can be closed, thus forcing
> the carb to draw in air from the back of the engine, which would be much
> warmer. But it does not actually take hot air off of a heat muff, such as
> the kind that is used for cabin heating. The Yak-50 does not have any cabin
> heat. Which... is not really a good thing.
>
> It strikes me that possibly carb icing has a ton of factors involved that
> make it hard to predict, and make and model of aircraft might even be a
> factor. I do not know.
>
> Still waiting for my own very first carb ice experience, but until it
> happens I don't think I will be opening and closing the carb ram air inlet
> flap on every landing. I suspect your design is totally different than my
> own.
>
> Mark Bitterlich
>
> ________________________________
>
> From: owner-yak-list-server@matronics.com on behalf of Didier Blouzard
> Sent: Sun 10/18/2009 3:21 PM
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Throttle
>
>
> OK Ok I was not aware that the M14P was particularly sensitive to carb
> icing. I will put full warm now on low pa..
> But I will also check the tube....for sure.
>
> Thanks
>
> Kind rgards
>
>
> 2009/10/18 pilko2 <pilko2@btinternet.com>
>
>
> Carburettor icing is not necessarily relevant to ambient
> temperature. Critical atmospheric water will not be present at -15C.
>
> Carb icing is quite common in the warm moist UK conditions,
> especially at low manifold settings.
>
> BEWARE !
>
> ________________________________
>
> From: owner-yak-list-server@matronics.com [mailto:
> owner-yak-list-server@matronics.com] On Behalf Of Didier Blouzard
> Sent: 18 October 2009 12:41
>
> To: yak-list@matronics.com
>
> Subject: Re: Yak-List: Throttle
>
>
> That's an interesting one. I thought that the M14P was very little
> subject to carburator icing. OK yes very interesting. Even with minus 15 I
> never had carb icing on that motor. But that sound like it as this effect
> disappear after taxiing.
> Has anyone else experienced such thing??
> Thanks.
> Now I will set the carb heat on at each landing.
>
> Didier
>
>
> 2009/10/18 pilko2 <pilko2@btinternet.com>
>
>
> pilko2@btinternet.com>
>
> That's likely carburettor icing restricting the
> butterfly/linkage movement.
>
> I've had the same and I now select carb heat on finals if
> there is any
> moisture in the air.
>
> Fly safe
> kp
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of
> tigeryak18t
> Sent: 17 October 2009 22:17
> To: yak-list@matronics.com
> Subject: Yak-List: Throttle
>
> --> <didier.blouzard@gmail.com>
>
> Now the other subject,
>
> I told you in the precedent post that I had 2
> subjects....you should not be
> sleeping. In France it is 11h30pm but you are just waking
> up, so good day to
> all.
>
> Now I was checking my fuel gauges up there in the sky and
> lining up I came
> to the final. On short, I reduced all, and I had a surprise,
> the throttle
> did not want to go under 50%.
> So I continued and landed at 50%...so now I can tell you
> that it is possible
> to land on a grass strip of 700m at 50% full fine pitch and
> stop at the
> end...
> I went at 50% to make some fuel, and stopped the engine.
> Then, I started again to taxi to my hangar and made some
> engine runup.
> An dthen surprise, it worked fine.
> I do not know what happened, but it is a little
> frightenning. Not being able
> to reduce..
> Is this something that already happenned to someone??
> Anyone have an idea of what happenned.???
>
> O now I am finished for the weekend, so good weekend to all
> and fly safe
>
> Didier HA-JAC 18T
>
> --------
> Didier Tiger YAK18T
> Member of Commemorative Air Force
> French Wing
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=268350#268350
>
>
> ==========
> rget="_blank">http://www.matronics.com/Navigator?Yak-List
> ==========
> http://forums.matronics.com <http://forums.matronics.com/>
> ==========
> le, List Admin.
> ="_blank">http://www.matronics.com/contribution
> ==========
>
>
> --
> Didier BLOUZARD
> <mailto:didier.blouzard@gmail.com> didier.blouzard@gmail.com
> 0624243672
>
>
> href="http://www.matronics.com/Navigator?Yak-List">
> http://www.matronics.com/Navigator?Yak-List
> href="http://forums.matronics.com <http://forums.matronics.com/>
> ">http://forums.matronics.com <http://forums.matronics.com/>
> href="http://www.matronics.com/contribution">
> http://www.matronics.com/c
>
>
> et="_blank">http://www.matronics.com/Navigator?Yak-List
> a>http://forums.matronics.com <http://forums.matronics.com/>
> _blank">http://www.matronics.com/contribution
>
>
> --
> Didier BLOUZARD
> didier.blouzard@gmail.com
> 0624243672
>
>
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I SAW a carburettor on a Yak 52 freeze while doing a ground test (with the
cowling off). It was moist, and outside temp at about 5 degrees. You could
see it become all white at the outside, and the engine started tor run quite
rough.
Jan
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G
CIV Det Cherry Point, MALS-14 64E
Sent: zondag 18 oktober 2009 22:23
Subject: RE: Yak-List: Throttle
MALS-14 64E" <mark.bitterlich@navy.mil>
Depends who you talk to Didier. I've owned a YAK-50 for over 9 years in
North Carolina and have not once experienced carb ice. Not that I am aware
of anyway.
On the other hand, many people on this list swear to the fact that it has
happened to them more than once.
I think we are ALL correct. I know it hasn't happened to me, but I believe
it has happened to others.
The carb we use in the M-14 is a pressure carb. But pressure carbs, even
though very close to being defined as "single point fuel injection" per se,
still do have a Venturi. Thus it is entirely feasible that they could
develop ice.
Just as a matter of curiosity, does your airplane have a carb inlet temp
gage? My YAK does. It is marked to basically show the "danger range" where
ice can happen. Again, on my particular airplane, there is no "carb heat"
.... there is instead an intake air flap that can be closed, thus forcing
the carb to draw in air from the back of the engine, which would be much
warmer. But it does not actually take hot air off of a heat muff, such as
the kind that is used for cabin heating. The Yak-50 does not have any cabin
heat. Which... is not really a good thing.
It strikes me that possibly carb icing has a ton of factors involved that
make it hard to predict, and make and model of aircraft might even be a
factor. I do not know.
Still waiting for my own very first carb ice experience, but until it
happens I don't think I will be opening and closing the carb ram air inlet
flap on every landing. I suspect your design is totally different than my
own.
Mark Bitterlich
________________________________
From: owner-yak-list-server@matronics.com on behalf of Didier Blouzard
Sent: Sun 10/18/2009 3:21 PM
Subject: Re: Yak-List: Throttle
OK Ok I was not aware that the M14P was particularly sensitive to carb
icing. I will put full warm now on low pa..
But I will also check the tube....for sure.
Thanks
Kind rgards
2009/10/18 pilko2 <pilko2@btinternet.com>
Carburettor icing is not necessarily relevant to ambient
temperature. Critical atmospheric water will not be present at -15C.
Carb icing is quite common in the warm moist UK conditions,
especially at low manifold settings.
BEWARE !
________________________________
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Didier Blouzard
Sent: 18 October 2009 12:41
To: yak-list@matronics.com
Subject: Re: Yak-List: Throttle
That's an interesting one. I thought that the M14P was very little
subject to carburator icing. OK yes very interesting. Even with minus 15 I
never had carb icing on that motor. But that sound like it as this effect
disappear after taxiing.
Has anyone else experienced such thing??
Thanks.
Now I will set the carb heat on at each landing.
Didier
2009/10/18 pilko2 <pilko2@btinternet.com>
<pilko2@btinternet.com>
That's likely carburettor icing restricting the
butterfly/linkage movement.
I've had the same and I now select carb heat on finals if
there is any
moisture in the air.
Fly safe
kp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of
tigeryak18t
Sent: 17 October 2009 22:17
To: yak-list@matronics.com
Subject: Yak-List: Throttle
--> <didier.blouzard@gmail.com>
Now the other subject,
I told you in the precedent post that I had 2
subjects....you should not be
sleeping. In France it is 11h30pm but you are just waking
up, so good day to
all.
Now I was checking my fuel gauges up there in the sky and
lining up I came
to the final. On short, I reduced all, and I had a surprise,
the throttle
did not want to go under 50%.
So I continued and landed at 50%...so now I can tell you
that it is possible
to land on a grass strip of 700m at 50% full fine pitch and
stop at the
end...
I went at 50% to make some fuel, and stopped the engine.
Then, I started again to taxi to my hangar and made some
engine runup.
An dthen surprise, it worked fine.
I do not know what happened, but it is a little
frightenning. Not being able
to reduce..
Is this something that already happenned to someone??
Anyone have an idea of what happenned.???
O now I am finished for the weekend, so good weekend to all
and fly safe
Didier HA-JAC 18T
--------
Didier Tiger YAK18T
Member of Commemorative Air Force
French Wing
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268350#268350
==========
rget="_blank">http://www.matronics.com/Navigator?Yak-List
==========
http://forums.matronics.com <http://forums.matronics.com/>
==========
le, List Admin.
="_blank">http://www.matronics.com/contribution
==========
--
Didier BLOUZARD
<mailto:didier.blouzard@gmail.com> didier.blouzard@gmail.com
0624243672
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/
Navigator?Yak-List
href="http://forums.matronics.com <http://forums.matronics.com/>
">http://forums.matronics.com <http://forums.matronics.com/>
href="http://www.matronics.com/contribution">http://www.matronics.com/c
et="_blank">http://www.matronics.com/Navigator?Yak-List
a>http://forums.matronics.com <http://forums.matronics.com/>
_blank">http://www.matronics.com/contribution
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Does anyone know what helmet and mic are original military equipment for th
e Yak-52.-- Im looking for the Russian- used helmet for this aircraft
that mated to the Baklan 5
-
thanks---- Delfin_driver
=0A=0A=0A
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hi Didier
-
We have struck the same thing here in New Zealand during our cooler weather
when after landing the throttle will not move. This can happen when the ca
rb inlet temp is below 3'-.
-I have struck it several times and after-closing the-carb inlet it c
ures the problem almost immediately. Often-on cold days I will set it at
about half position, If the inlet temp is kept above 3" it does not stick.
Have only ever had it happen either on short finals or after landing.
-
Regards
-
Keith
-
Yak 52
--- On Mon, 19/10/09, Didier Blouzard <didier.blouzard@gmail.com> wrote:
From: Didier Blouzard <didier.blouzard@gmail.com>
Subject: Re: Yak-List: Throttle
Received: Monday, 19 October, 2009, 10:06 AM
Mark,
I must say that the thing that happened seems more mechanical than ice. But
I will examine all possibilities.
The only thing I know is that I did not dreamed the problem. I was with a f
riend owner of a 52. He is a comercial pilot. And both of us could see that
the motor did not want to go under 50% even if I pushed hard on the throtl
e lever. We even tried to check the pitch (going to coarse and back to fine
).
After turning off the motor and refueling. At the next start everything cam
e back to normal. But I did not tried the carb heat (was off) and I did not
looked closely to the throtle lever. Was it completely down or was it bloc
ked I am not sure.
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
FWIW; The thread on smoke got my curiosity up so when the chance to fly
came up today I took a pocket CO meter along. On the ground, canopy
closed 14 ppm, flying w/ canopy closed "0". Then to change the airflow
I did some mostly positive acro ( loops & cubans) and it went up to 22
ppm. These are lower than I remember but some time back we put a metal
FOD cover in the tail which would block a lot of the airflow out of the
tail. That probably helped keep the CO out. With the ram air
ventilation of the Yak, closing the open space on the TOP of the
elevator bell crank might do more to obtain positive cabin pressure than
trying to seal cockpit leaks. I am not aware of anyone that has done this.
bob
52BN
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|