Today's Message Index:
----------------------
1. 12:05 AM - Re: START IGNIT CB (Richard Goode)
2. 10:13 AM - Re: START IGNIT CB (Mark Bitterlich)
3. 10:59 AM - Re: START IGNIT CB (Richard Goode)
4. 12:51 PM - Re: START IGNIT CB (dbflr)
5. 02:19 PM - Re: Re: START IGNIT CB (A. Dennis Savarese)
6. 02:23 PM - Re: Re: START IGNIT CB (A. Dennis Savarese)
7. 02:45 PM - Re: Re: START IGNIT CB (mark bitterlich)
8. 02:49 PM - Re: START IGNIT CB (mark bitterlich)
9. 03:05 PM - Re: START IGNIT CB (Mark Pennington)
10. 03:44 PM - Re: START IGNIT CB (Ttail)
11. 06:09 PM - Re: START IGNIT CB (dbflr)
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I don't think that is correct or at least it is not clear. The position is
that there are two different magnetos the M9F, significantly the most
popular and the M9-35M. They are externally identical, and the only internal
difference is that the -35M has an internal centrifugal advance. The point
being that the timing of the spark needs to be retarded for an engine to
start, but once it is running then it needs more "advanced". So the -35M
automatically goes to a retarded position when it is stationary or at very
low rpm. Once the revolutions go beyond this low base, then the spark
increasingly is advanced.
On the other hand, with the M9F, the spark position is fixed, but it gets
round the requirement for a retarded spark in starting by having a magneto
rotor with two contacts. In order to start, the magnetos are off and the
"shower of sparks" is automatically energised, and provides sparks through
the retarded rotor contact. Once the engine starts, you will then switch on
the magnetos; releasing the "shower of sparks", and then the magneto
provides sparks through the more advanced contact on the rotor.
It is relatively simple to change a magneto from one version to the other.
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode@russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.
-----Original Message-----
From: owner-yak-list-server@matronics.com
<owner-yak-list-server@matronics.com> On Behalf Of Tom Elliott
Sent: 17 April 2020 01:48
Subject: RE: Yak-List: START IGNIT CB
a centrifugal advance mechanism built into the mag.
does nothing for the start only after eng is running you will need a shower
of sparks unit.
The CB is for shower of sparks ant to power the start air valve
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Snazpappy
Sent: Thursday, April 16, 2020 12:47 PM
Subject: Yak-List: START IGNIT CB
I have a YAK 52TW, with a M-14PF engine, which has the M9-35M mags. With
these mags I was told there is no shower of sparks or start coil, as it has
a centrifugal advance mechanism built into the mag.
Does anyone know what the START IGNIT circuit breaker is used for?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495844#495844
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Richard Goode explains the difference between the M9F and -35M mags quite
well, but what is still less than clear is the way the actual ignition
voltage is developed with each. Both have an internal high voltage coil as
part of a standard magneto design. Both mags are "geared" causing the
magnets to spin faster than crankshaft speed The moving magnetic field is
what induces voltage into the high voltage coil that is used to fire the
spark plugs. The big difference between the two is that the M9 uses a rotor
with two contacts. One connects to the output of the mags internal coil
through the cigarette lead. The other is not connected to anything internal
to the mag, instead it is fed directly from an additional high voltage wire
running external of the mag to a second high voltage assembly identical to
what was used in the Model-T Ford.
This external starter coil uses an internal relay that works like this:
When power is applied to the relay, its internal solenoid changes the
position of the relay contacts that then REMOVES power to the relay itself
and the contacts then close again, powering up the relay solenoid again, and
the process repeats. Rapidly! This creases what is commonly called "A
Buzzer", because that is exactly what it sounds like. The output of this
buzzer relay is a square wave, which then is fed into the primary of the
external high voltage coil, and the output from that is fed directly to the
second point on the rotor in the mag, discussed earlier and also by Richard.
This point on the rotor is "retarded" (fires the plugs later than normal)
for starting. The starter circuit breaker in the aircraft goes to this
starter coil assembly and the air starter valve, also mentioned in another
reply.
The -35M mags on the other hand have a rotor with only one contact point
firing the plugs. The rotor itself is moved by a centrifugal advance
mechanism so it is retarded at start, and then is advanced to normal run
timing as engine RPM increases, and it open pretty quickly to that setting.
However, it has no external start coil as what was necessary in the M9F
design, which can be a problem if the mags do not spin fast enough to fire
the spark plugs. Let me stop here though and say that -35M mags will OFTEN
start simply by turning on the mags and hitting the start button. However,
a way to make sure they do is to increase the output of the mags internal
high voltage coil during start. The way this can be done is to hook the
Mags P lead to a buzzer relay, identical to the one described earlier for
the external starting coil used in the M9F. Except here, there is no
additional coil, instead the buzzer supplies square wave 28 volts to the P
lead itself, thus energizing the mags internal high voltage coil with
pulsating DC (actually a square wave), that causes the internal coil to
supply "boosted" high voltage to the spark plugs through the rotor which is
in its retarded position regardless of the movement and speed of the mags
internal spinning magnets. This buzzer box method of boosting a magneto
coil is common to many different makes and models of aircraft.
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode
Sent: Friday, April 17, 2020 3:03 AM
Subject: RE: Yak-List: START IGNIT CB
<richard.goode@russianaeros.com>
I don't think that is correct or at least it is not clear. The position is
that there are two different magnetos the M9F, significantly the most
popular and the M9-35M. They are externally identical, and the only internal
difference is that the -35M has an internal centrifugal advance. The point
being that the timing of the spark needs to be retarded for an engine to
start, but once it is running then it needs more "advanced". So the -35M
automatically goes to a retarded position when it is stationary or at very
low rpm. Once the revolutions go beyond this low base, then the spark
increasingly is advanced.
On the other hand, with the M9F, the spark position is fixed, but it gets
round the requirement for a retarded spark in starting by having a magneto
rotor with two contacts. In order to start, the magnetos are off and the
"shower of sparks" is automatically energised, and provides sparks through
the retarded rotor contact. Once the engine starts, you will then switch on
the magnetos; releasing the "shower of sparks", and then the magneto
provides sparks through the more advanced contact on the rotor.
It is relatively simple to change a magneto from one version to the other.
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode@russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.
-----Original Message-----
From: owner-yak-list-server@matronics.com
<owner-yak-list-server@matronics.com> On Behalf Of Tom Elliott
Sent: 17 April 2020 01:48
Subject: RE: Yak-List: START IGNIT CB
a centrifugal advance mechanism built into the mag.
does nothing for the start only after eng is running you will need a shower
of sparks unit.
The CB is for shower of sparks ant to power the start air valve
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Snazpappy
Sent: Thursday, April 16, 2020 12:47 PM
Subject: Yak-List: START IGNIT CB
I have a YAK 52TW, with a M-14PF engine, which has the M9-35M mags. With
these mags I was told there is no shower of sparks or start coil, as it has
a centrifugal advance mechanism built into the mag.
Does anyone know what the START IGNIT circuit breaker is used for?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495844#495844
--
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Mark understands these technicalities far better than I! But an amusing
angle is that I have a 1930s Bentley which, on the steering column has a
manual advance and retard for the ignition. So one typically starts it fully
retarded, and once started it is advanced. However, once hot, and the engine
stationary, if you move the "advance and retard control" quickly from fully
advanced to fully retarded the car will normally start completely silently
and rather impressively!
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode@russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.
-----Original Message-----
From: owner-yak-list-server@matronics.com
<owner-yak-list-server@matronics.com> On Behalf Of Mark Bitterlich
Sent: 17 April 2020 18:11
Subject: RE: Yak-List: START IGNIT CB
--> <markbitterlich@embarqmail.com>
Richard Goode explains the difference between the M9F and -35M mags quite
well, but what is still less than clear is the way the actual ignition
voltage is developed with each. Both have an internal high voltage coil as
part of a standard magneto design. Both mags are "geared" causing the
magnets to spin faster than crankshaft speed The moving magnetic field is
what induces voltage into the high voltage coil that is used to fire the
spark plugs. The big difference between the two is that the M9 uses a rotor
with two contacts. One connects to the output of the mags internal coil
through the cigarette lead. The other is not connected to anything internal
to the mag, instead it is fed directly from an additional high voltage wire
running external of the mag to a second high voltage assembly identical to
what was used in the Model-T Ford.
This external starter coil uses an internal relay that works like this:
When power is applied to the relay, its internal solenoid changes the
position of the relay contacts that then REMOVES power to the relay itself
and the contacts then close again, powering up the relay solenoid again, and
the process repeats. Rapidly! This creases what is commonly called "A
Buzzer", because that is exactly what it sounds like. The output of this
buzzer relay is a square wave, which then is fed into the primary of the
external high voltage coil, and the output from that is fed directly to the
second point on the rotor in the mag, discussed earlier and also by Richard.
This point on the rotor is "retarded" (fires the plugs later than normal)
for starting. The starter circuit breaker in the aircraft goes to this
starter coil assembly and the air starter valve, also mentioned in another
reply.
The -35M mags on the other hand have a rotor with only one contact point
firing the plugs. The rotor itself is moved by a centrifugal advance
mechanism so it is retarded at start, and then is advanced to normal run
timing as engine RPM increases, and it open pretty quickly to that setting.
However, it has no external start coil as what was necessary in the M9F
design, which can be a problem if the mags do not spin fast enough to fire
the spark plugs. Let me stop here though and say that -35M mags will OFTEN
start simply by turning on the mags and hitting the start button. However,
a way to make sure they do is to increase the output of the mags internal
high voltage coil during start. The way this can be done is to hook the
Mags P lead to a buzzer relay, identical to the one described earlier for
the external starting coil used in the M9F. Except here, there is no
additional coil, instead the buzzer supplies square wave 28 volts to the P
lead itself, thus energizing the mags internal high voltage coil with
pulsating DC (actually a square wave), that causes the internal coil to
supply "boosted" high voltage to the spark plugs through the rotor which is
in its retarded position regardless of the movement and speed of the mags
internal spinning magnets. This buzzer box method of boosting a magneto
coil is common to many different makes and models of aircraft.
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode
Sent: Friday, April 17, 2020 3:03 AM
Subject: RE: Yak-List: START IGNIT CB
<richard.goode@russianaeros.com>
I don't think that is correct or at least it is not clear. The position is
that there are two different magnetos the M9F, significantly the most
popular and the M9-35M. They are externally identical, and the only internal
difference is that the -35M has an internal centrifugal advance. The point
being that the timing of the spark needs to be retarded for an engine to
start, but once it is running then it needs more "advanced". So the -35M
automatically goes to a retarded position when it is stationary or at very
low rpm. Once the revolutions go beyond this low base, then the spark
increasingly is advanced.
On the other hand, with the M9F, the spark position is fixed, but it gets
round the requirement for a retarded spark in starting by having a magneto
rotor with two contacts. In order to start, the magnetos are off and the
"shower of sparks" is automatically energised, and provides sparks through
the retarded rotor contact. Once the engine starts, you will then switch on
the magnetos; releasing the "shower of sparks", and then the magneto
provides sparks through the more advanced contact on the rotor.
It is relatively simple to change a magneto from one version to the other.
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode@russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES In partnership with
Aerometal Kft, Hungary.
-----Original Message-----
From: owner-yak-list-server@matronics.com
<owner-yak-list-server@matronics.com> On Behalf Of Tom Elliott
Sent: 17 April 2020 01:48
Subject: RE: Yak-List: START IGNIT CB
a centrifugal advance mechanism built into the mag.
does nothing for the start only after eng is running you will need a shower
of sparks unit.
The CB is for shower of sparks ant to power the start air valve
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Snazpappy
Sent: Thursday, April 16, 2020 12:47 PM
Subject: Yak-List: START IGNIT CB
I have a YAK 52TW, with a M-14PF engine, which has the M9-35M mags. With
these mags I was told there is no shower of sparks or start coil, as it has
a centrifugal advance mechanism built into the mag.
Does anyone know what the START IGNIT circuit breaker is used for?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495844#495844
--
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| Subject: | Re: START IGNIT CB |
markbitterlich(at)embarqm wrote:
>
> -35M mags will OFTEN
> start simply by turning on the mags and hitting the start button. However,
> a way to make sure they do is to increase the output of the mags internal
> high voltage coil during start. The way this can be done ../
>
> Mark Bitterlich
>
>
> --
"OFTEN" ??? that's how it always starts. SOP
"can be done... "??? that's how it IS done
PK-45 ignition unIt supplies low voltage pulses to -35 mag's internal coil
KP-4716 unit feeds high voltage 900Hz square wave directly to -9F distributor's
second pin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495867#495867
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| Subject: | Re: START IGNIT CB |
The starting coil PK-45 does not supply additional voltage to the ignition
coil.=C2- It is totally and completely separate/isolated from the igniti
on coil.=C2- The PK-45 starting coiling is connected directly to the trai
ling finger of the rotor rotating in the counterclockwise direction and sup
plies a constant spark to that finger and thus to the spark plug wire conta
ct point in the distributor cap for as long as the start button is held dow
n.=C2- The trailing finger fires the spark plug approximately 7 degrees a
fter top dead center or when the piston is moving down on the power stroke.
As Richard explained, the engine spark needs to be retarded (read after TDC
) in order for it to start.=C2- The M9F fixed timing mag must have a star
ting coil (thus the two finger rotor in the mag).=C2- The M9-35 mag is, a
gain as Richard explained, a centrifugal advance magneto. It only requires
a single finger rotor because its initial timing is set to a specified numb
er of degrees AFTER TDC.=C2- Once the engine fires and the rotation incre
ases, the centrifugal advance mechanical mechanism advances the timing to b
efore TDC and continues to fire BTDC until shut down.
http://m-14p.com/wp-content/uploads/2014/09/Centrifugal-Advanced-Magneto-Ti
ming-Procedures.pdf
Dennis
On Friday, April 17, 2020, 3:53:15 PM EDT, dbflr <le_vix@hotmail.com> w
rote:
markbitterlich(at)embarqm wrote:
>
> -35M mags will OFTEN
> start simply by turning on the mags and hitting the start button.=C2- H
owever,
> a way to make sure they do is to increase the output of the mags internal
> high voltage coil during start.=C2- The way this can be done ../
>
> Mark Bitterlich
>=C2-
>
> --
"OFTEN" ???=C2- that's how it always starts. SOP
"can be done... "???=C2- that's how it IS done
PK-45 ignition unIt supplies low voltage pulses to -35 mag's internal coil
KP-4716 unit feeds high voltage 900Hz square wave directly to -9F distribut
or's second pin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495867#495867
S -
WIKI -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
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| Subject: | Re: START IGNIT CB |
OOPS!=C2- I miss spoke.=C2- I was thinking about the KP-4716 starting
coil (Not the PK-45)
used with the fixed timing mags used on the M14.Dennis
On Friday, April 17, 2020, 3:53:15 PM EDT, dbflr <le_vix@hotmail.com> w
rote:
markbitterlich(at)embarqm wrote:
>
> -35M mags will OFTEN
> start simply by turning on the mags and hitting the start button.=C2- H
owever,
> a way to make sure they do is to increase the output of the mags internal
> high voltage coil during start.=C2- The way this can be done ../
>
> Mark Bitterlich
>=C2-
>
> --
"OFTEN" ???=C2- that's how it always starts. SOP
"can be done... "???=C2- that's how it IS done
PK-45 ignition unIt supplies low voltage pulses to -35 mag's internal coil
KP-4716 unit feeds high voltage 900Hz square wave directly to -9F distribut
or's second pin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495867#495867
S -
WIKI -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
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| Subject: | Re: START IGNIT CB |
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PT0
Message 9
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| Subject: | Re: START IGNIT CB |
Mr. Bitterlich
You are completely mistaken. Your 68 doesn=99t have a big block.
That is a MONSTER block.
Mark Pennington.
On Fri, Apr 17, 2020 at 5:54 PM mark bitterlich <
markbitterlich@embarqmail.com> wrote:
> That's just too cool!
>
> Richard, I just rebuilt my 68 Camaro again after Hurricane Florence
> flooded my hangars. Put in a Blue Print 632 cu big block. 834 hp on pump
> gas, normally aspirated. Wish you were here to take it for a drive.
>
> Mark
>
> -------- Original message --------
> From: Richard Goode <richard.goode@russianaeros.com>
> Date: 4/17/20 13:55 (GMT-05:00)
> To: yak-list@matronics.com
> Subject: RE: Yak-List: START IGNIT CB
>
> richard.goode@russianaeros.com>
>
> Mark understands these technicalities far better than I! But an amusing
> angle is that I have a 1930s Bentley which, on the steering column has a
> manual advance and retard for the ignition. So one typically starts it
> fully
> retarded, and once started it is advanced. However, once hot, and the
> engine
> stationary, if you move the "advance and retard control" quickly from ful
ly
> advanced to fully retarded the car will normally start =93 complete
ly
> silently
> and rather impressively!
>
>
> RICHARD GOODE AEROBATICS
> Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
> Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
> e-mail: richard.goode@russianaeros.com
> www.russianaeros.com
> WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
> In partnership with Aerometal Kft, Hungary.
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> <owner-yak-list-server@matronics.com> On Behalf Of Mark Bitterlich
> Sent: 17 April 2020 18:11
> To: yak-list@matronics.com
> Subject: RE: Yak-List: START IGNIT CB
>
> --> <markbitterlich@embarqmail.com>
>
> Richard Goode explains the difference between the M9F and -35M mags quite
> well, but what is still less than clear is the way the actual ignition
> voltage is developed with each. Both have an internal high voltage coil
as
> part of a standard magneto design. Both mags are "geared" causing the
> magnets to spin faster than crankshaft speed The moving magnetic field i
s
> what induces voltage into the high voltage coil that is used to fire the
> spark plugs. The big difference between the two is that the M9 uses a
> rotor
> with two contacts. One connects to the output of the mags internal coil
> through the cigarette lead. The other is not connected to anything
> internal
> to the mag, instead it is fed directly from an additional high voltage
> wire
> running external of the mag to a second high voltage assembly identical t
o
> what was used in the Model-T Ford.
>
> This external starter coil uses an internal relay that works like this:
> When power is applied to the relay, its internal solenoid changes the
> position of the relay contacts that then REMOVES power to the relay itsel
f
> and the contacts then close again, powering up the relay solenoid again,
> and
> the process repeats. Rapidly! This creases what is commonly called "A
> Buzzer", because that is exactly what it sounds like. The output of th
is
> buzzer relay is a square wave, which then is fed into the primary of the
> external high voltage coil, and the output from that is fed directly to
> the
> second point on the rotor in the mag, discussed earlier and also by
> Richard.
> This point on the rotor is "retarded" (fires the plugs later than normal)
> for starting. The starter circuit breaker in the aircraft goes to this
> starter coil assembly and the air starter valve, also mentioned in anothe
r
> reply.
>
> The -35M mags on the other hand have a rotor with only one contact point
> firing the plugs. The rotor itself is moved by a centrifugal advance
> mechanism so it is retarded at start, and then is advanced to normal run
> timing as engine RPM increases, and it open pretty quickly to that settin
g.
> However, it has no external start coil as what was necessary in the M9F
> design, which can be a problem if the mags do not spin fast enough to fir
e
> the spark plugs. Let me stop here though and say that -35M mags will OFT
EN
> start simply by turning on the mags and hitting the start button. Howeve
r,
> a way to make sure they do is to increase the output of the mags internal
> high voltage coil during start. The way this can be done is to hook the
> Mags P lead to a buzzer relay, identical to the one described earlier for
> the external starting coil used in the M9F. Except here, there is no
> additional coil, instead the buzzer supplies square wave 28 volts to the
P
> lead itself, thus energizing the mags internal high voltage coil with
> pulsating DC (actually a square wave), that causes the internal coil to
> supply "boosted" high voltage to the spark plugs through the rotor which
is
> in its retarded position regardless of the movement and speed of the mags
> internal spinning magnets. This buzzer box method of boosting a magneto
> coil is common to many different makes and models of aircraft.
>
> Mark Bitterlich
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode
> Sent: Friday, April 17, 2020 3:03 AM
> To: yak-list@matronics.com
> Subject: RE: Yak-List: START IGNIT CB
>
> <richard.goode@russianaeros.com>
>
> I don't think that is correct =93 or at least it is not clear. The
position
> is
> that there are two different magnetos =93 the M9F, significantly th
e most
> popular and the M9-35M. They are externally identical, and the only
> internal
> difference is that the -35M has an internal centrifugal advance. The poin
t
> being that the timing of the spark needs to be retarded for an engine to
> start, but once it is running then it needs more "advanced". So the -35M
> automatically goes to a retarded position when it is stationary or at ver
y
> low rpm. Once the revolutions go beyond this low base, then the spark
> increasingly is advanced.
>
> On the other hand, with the M9F, the spark position is fixed, but it gets
> round the requirement for a retarded spark in starting by having a magnet
o
> rotor with two contacts. In order to start, the magnetos are off and the
> "shower of sparks" is automatically energised, and provides sparks throug
h
> the retarded rotor contact. Once the engine starts, you will then switch
on
> the magnetos; releasing the "shower of sparks", and then the magneto
> provides sparks through the more advanced contact on the rotor.
>
> It is relatively simple to change a magneto from one version to the other
.
>
>
> RICHARD GOODE AEROBATICS
> Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
> Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
> e-mail: richard.goode@russianaeros.com
> www.russianaeros.com
> WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES In partnership with
> Aerometal Kft, Hungary.
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> <owner-yak-list-server@matronics.com> On Behalf Of Tom Elliott
> Sent: 17 April 2020 01:48
> To: yak-list@matronics.com
> Subject: RE: Yak-List: START IGNIT CB
>
>
> a centrifugal advance mechanism built into the mag.
> does nothing for the start only after eng is running you will need a show
er
> of sparks unit.
>
> The CB is for shower of sparks ant to power the start air valve
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Snazpappy
> Sent: Thursday, April 16, 2020 12:47 PM
> To: yak-list@matronics.com
> Subject: Yak-List: START IGNIT CB
>
>
> I have a YAK 52TW, with a M-14PF engine, which has the M9-35M mags. With
> these mags I was told there is no shower of sparks or start coil, as it h
as
> a centrifugal advance mechanism built into the mag.
>
> Does anyone know what the START IGNIT circuit breaker is used for?
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=495844#495844
>
>
> --
> This email has been checked for viruses by AVG.
> https://www.avg.com
>
>
===========
===========
===========
===========
===========
>
>
Message 10
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| Subject: | Re: START IGNIT CB |
Thread Drift.
MarkPennigton ... trying to get in touch with you from another thread ref Oil vent
system you used in your CJ6 M14P. Can you pm me please or Email to:
ttail&internode.on.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495877#495877
Message 11
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| Subject: | Re: START IGNIT CB |
one "expert" wrote :
"The -35 Mag equipped engine is often started without a "PK-45" or any other well
known device supplying "low voltage pulses" to the P lead. How? Ungrounding
the P lead and using electric start to crank the engine."
SURE ! you can start many engines by spooling it up to 80+% and then flipping ignition
switch. is that SOP ? NO ! read the original manual instead of arguing.
another "expert" revealed:
" The PK-45 starting coiling is connected directly to the trailing finger of the
rotor rotating in the counterclockwise direction and supplies a constant spark
to that finger and thus to the spark plug wire contact point in the distributor
cap for as long as the start button is held down."
no it's not. because PK-45 is a LOW VOLTAGE output device. what part of "low"
is so confusing ? didn't you read this thread ? PK-45 works with
M9-35 and there's no "trailing finger" in it.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495879#495879
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