Today's Message Index:
----------------------
1. 02:05 AM - how does the starting coil work exactly (Jan Mevis)
2. 04:49 AM - Re: Yak-52 intercom (Roger Kemp)
3. 08:07 AM - Re: Buying YAK-18T (dochoc)
4. 10:52 AM - Re: how does the starting coil work exactly (Walter Lannon)
5. 11:27 AM - Ldg strut serviceing (N13472@aol.com)
6. 11:27 AM - Ldg strut serviceing (N13472@aol.com)
7. 12:06 PM - Re: Ldg strut serviceing (Walter Lannon)
8. 12:16 PM - Re: Ldg strut serviceing (Hans Oortman 1)
9. 05:46 PM - Re: Ldg strut serviceing (Craig Payne)
10. 06:40 PM - YAK52 struct repair manual (Cornel Gazdaru)
Message 1
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| Subject: | how does the starting coil work exactly |
Hi all,
This has been intriguing to me, so I try to figure out what happens exactly.
Is the following reasoning correct, or am I missing it completely?
When pushing the start-button, the magnetos are still off. The high-tension
starting coil gets current from the battery to its primary winding, and the
changing flux causes a high voltage on the secondary winding. The left-hand
magneto (front plugs) has a special connection for this coil, and this high
tension is immediately conducted to the proper spark plug via the
distributor on the left hand magneto.
If I understand this well, you get only one spark from the start coil, and
you have to switch on the magneto's immediately after hearing one
"explosion"?
I always thought that there was a sort of "shower of sparks" generator ?
Is this system different on the Yak 50 and 52, or even compared with the
CJ's ?
Jan Mevis
Yak50 RA2005K
Message 2
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Karl,
The unit is located above the Russian Radio control panel on the right side of
your instrument panel. I has two white knobs on it. It is held in the instrument
panel by 4 screws. I do not have a schematic for the intercom. Maybe someone
else on the list does. If you are kicking off the circuit breaker, it sounds
like you have a short in the wiring harness which a whole lot of fun to chase
down.
Doc
----- Original Message -----
From: Karl Ahamer
Sent: 12/17/2006 1:03:37 AM
Subject: Yak-List: Yak-52 intercom
Hi everyone,
We have a YAK-52 in our club which has developed an intercom problem.As soon us
one switches the intercom on, the circuit breaker/switch cuts out.
Where is the intercom located in the YAK? Is it part of the radio?
Thanks
Karl Ahamer
Australia
--
16/12/2006
Message 3
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| Subject: | Re: Buying YAK-18T |
Hans
Have sent you an email.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=82074#82074
Message 4
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| Subject: | Re: how does the starting coil work exactly |
Jan;
Your operational description of the boost coil is right on.
The spark is continuous (to the distributor starting finger) as long as
the button is depressed and the engine would continue to run on the left
mag only. Switching to both mags immediately keeps boost coil operation
time to a minimum and avoids fouling of the right hand spark plugs.
Walt
----- Original Message -----
From: Jan Mevis
To: yak-list@matronics.com
Sent: Sunday, December 17, 2006 2:04 AM
Subject: Yak-List: how does the starting coil work exactly
Hi all,
This has been intriguing to me, so I try to figure out what happens
exactly. Is the following reasoning correct, or am I missing it
completely?
When pushing the start-button, the magnetos are still off. The
high-tension starting coil gets current from the battery to its primary
winding, and the changing flux causes a high voltage on the secondary
winding. The left-hand magneto (front plugs) has a special connection
for this coil, and this high tension is immediately conducted to the
proper spark plug via the distributor on the left hand magneto.
If I understand this well, you get only one spark from the start coil,
and you have to switch on the magneto's immediately after hearing one
"explosion"?
I always thought that there was a sort of "shower of sparks" generator
?
Is this system different on the Yak 50 and 52, or even compared with
the CJ's ?
Jan Mevis
Yak50 RA2005K
Message 5
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| Subject: | Ldg strut serviceing |
Question for all. When you service the main Ldg strut with Nitrogen ( 735
psi ) is it with the
plane on its wheels or on the jacks? I can not find any ref to this in the
books.
Tom Elliott
CJ-6 NX63727
Sandy Valley NV
3L2
702-723-1223
Message 6
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| Subject: | Ldg strut serviceing |
Question for all. When you service the main Ldg strut with Nitrogen ( 735
psi ) is it with the
plane on its wheels or on the jacks? I can not find any ref to this in the
books.
Tom Elliott
CJ-6 NX63727
Sandy Valley NV
3L2
702-723-1223
Message 7
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| Subject: | Re: Ldg strut serviceing |
Hi Tom;
Either way, doesn't matter. Sruts are fully extended at that pressure
with the A/C weight on them.
Pressure for mains is 48 ATM (700 psi) and nose 20 ATM (290 psi)
Cheers
Walt
----- Original Message -----
From: N13472@aol.com
To: yak-list@matronics.com ; yak-list-digest@matronics.com
Sent: Sunday, December 17, 2006 11:26 AM
Subject: Yak-List: Ldg strut serviceing
Question for all. When you service the main Ldg strut with Nitrogen (
735 psi ) is it with the
plane on its wheels or on the jacks? I can not find any ref to this in
the books.
Tom Elliott
CJ-6 NX63727
Sandy Valley NV
3L2
702-723-1223
Message 8
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| Subject: | Ldg strut serviceing |
Doesn't make any difference my friend..Boyles law.
Hans
_____
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens N13472@aol.com
Verzonden: zondag 17 december 2006 20:27
Aan: yak-list@matronics.com; yak-list-digest@matronics.com
Onderwerp: Yak-List: Ldg strut serviceing
Question for all. When you service the main Ldg strut with Nitrogen ( 735
psi ) is it with the
plane on its wheels or on the jacks? I can not find any ref to this in the
books.
Tom Elliott
CJ-6 NX63727
Sandy Valley NV
3L2
702-723-1223
Message 9
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| Subject: | Re: Ldg strut serviceing |
>
> Question for all. When you service the main Ldg strut with Nitrogen ( 735
> psi ) is it with the
> plane on its wheels or on the jacks? I can not find any ref to this in the
> books.
>
Depends what you mean by servicing. Checking the fluid level or changing it requires
putting the airplane on the jacks and releasing the pressure in the shocks
to remove the valve. I say changing it because you on't really know how much
is in there without draining out the old. Go by the book when adding a measured
amount of fluid and the replace the valve and pressurize.
BTW, a bit of Granville strut seal worked wonders for my shocks.
Craig Payne
cpayne@joimail.com
Message 10
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| Subject: | YAK52 struct repair manual |
Anybody knows how to get a copy of the YAK52 structural repair manual
and/or illustrated parts manual.
Or something similar if the above do not exist?
Romanian version is OK. I can translate it.
Thank you
Cornel
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