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1. 10:47 AM - Generator failure/ loss of electrical power (Serge Svoysky)
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| Subject: | Generator failure/ loss of electrical power |
The generator was replaced today and "generator failure" light no longer com
es ON. Hope it is a permanent fix. Thanks everyone for helping me out.
> On May 13, 2017, at 3:04 AM, Yak-List Digest Server <yak-list@matronics.co
m> wrote:
>
> *
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> Total Messages Posted Fri 05/12/17: 10
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> Today's Message Index:
> ----------------------
>
> 1. 10:18 AM - Generator failure/ loss of electrical power (Serge Svo
ysky)
> 2. 12:16 PM - Re: Generator failure/ loss of electrical power (Roger K
emp)
> 3. 12:36 PM - Re: [Non-DoD Source] Generator failure/ loss of electric
al power (Bitterlich, Mark G CIV NAVAIR, WD)
> 4. 12:43 PM - Re: Generator failure/ loss of electrical power (Pedro C
erveira Pinto)
> 5. 03:20 PM - Re: [Non-DoD Source] Generator failure/ loss of electric
al power (Roger Kemp)
> 6. 05:07 PM - Re: Generator failure/ loss of electrical power (A. Den
nis Savarese)
> 7. 05:31 PM - Re: [Non-DoD Source] Generator failure/ loss of electric
al power (A. Dennis Savarese)
> 8. 06:04 PM - Re: Generator failure/ loss of electrical power (Cervei
ra Pinto)
> 9. 06:41 PM - Re: Generator failure/ loss of electrical power (A. Den
nis Savarese)
> 10. 07:55 PM - Yak 55M Throttle Cable (Jason .)
>
>
>
> ________________________________ Message 1 _____________________________
________
>
>
> Time: 10:18:57 AM PST US
> From: Serge Svoysky <ssvoysky@gmail.com>
> Subject: Yak-List: Generator failure/ loss of electrical power
>
>
> Hello all,
> Looking for advice on the following situation- everything looked normal on
the
> ground; "generator failure" on idle, but went away with RPM increase, proc
eeded
> to take off and got "generator failure" right away on departure. Landed to
check
> on the ground again, all looked normal, departed, light came on. Decided
> to go for a short flight, started losing all electrical equipment one by o
ne starting
> with the radio, but got it all back on final approach when power was reduc
ed.
> Worked fine (no light, charge as usual) on the ground.
>
> I'd appreciate for any help!
> YAK52 in NJ
>
> Thanks,
> serge
>
>
> ________________________________ Message 2 _____________________________
________
>
>
> Time: 12:16:30 PM PST US
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
> From: Roger Kemp <f16viperdoc@me.com>
>
>
> What was your voltage meter doing? Was it the "GenFault" light that came o
n and
> at what %RPM were you getting the light.
> Doc
> Doc
>
> Sent from my iPad
>
>> On May 12, 2017, at 12:16 PM, Serge Svoysky <ssvoysky@gmail.com> wrote:
>>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked normal o
n the
> ground; "generator failure" on idle, but went away with RPM increase, proc
eeded
> to take off and got "generator failure" right away on departure. Landed to
> check on the ground again, all looked normal, departed, light came on. Dec
ided
> to go for a short flight, started losing all electrical equipment one by o
ne
> starting with the radio, but got it all back on final approach when power w
as
> reduced. Worked fine (no light, charge as usual) on the ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>>
>>
>>
>
>
> ________________________________ Message 3 _____________________________
________
>
>
> Time: 12:36:14 PM PST US
> From: "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich@navy.mil>
> Subject: RE: [Non-DoD Source] Yak-List: Generator failure/ loss of electr
ical
> power
>
>
> I am assuming we are dealing with a stock Russian generator system.
>
> It appears that the generator light is telling you the truth. The first t
hing
> I would suggest is that you keep a close eye on the volt/amp meter. Some Y
AK-52's
> have a meter that only shows current, and some have the meter with a butto
n
> on it that allows you to also check voltage. Which do you have?
>
> This meter tells you a lot about what is going on with your system. You
should
> be running checks and looking at readings anytime you have a generator lig
ht
> issue.
>
> The generator light is controlled by the MAIN CONTACTOR RELAY on the Combi
ned Device
> DMR-200 relay assembly. When the MAIN CONTACTOR closes, the generator
> light goes OUT. When that MAIN CONTACTOR OPENS the generator light comes o
n.
>
>
> So what appears to be happening in your case, is that when power is increa
sed,
> the generator is working, and the MAIN CONTACTOR closes. Generator power h
as
> to be above battery voltage for the main contactor to close. So the gener
ator
> voltage is there, the main contactor closes and everything is working.
>
> After take-off, the main contactor opened, we do not know why yet but it w
as not
> over-voltage, because that trips out a small breaker which has to be reset
> to get power back. Since you did not have to reset anything, it was not o
ver-voltage.
> However, if the generator voltage dropped, the main contactor would
> open, the light would come on, and I suspect this is what happened.
>
> What is worse is that it is clearly apparent that you battery condition is
very
> bad. When you lost the generator, the battery should have powered your wh
ole
> aircraft for at least 30 minutes!
>
> So first things first, put a hand held volt meter on your batteries (engin
e not
> running) and check the voltage when you turn on the Master and verify that
your
> battery voltage maintains 22-24 volts or so. If the voltage starts droppi
ng
> to something like 19 or lower, you have weak and/or bad batteries. Replac
e
> them. The Russian system reverse current relay RELIES on you having good
batteries.
> Period end of story. If you have weak batteries, all kinds of bad things
> happen, and it appears from your story that you might very well have stumb
led
> into that condition.
>
> Once we get past the battery, the next issues is your generator system. I
f you
> are lucky, you will have a meter installed in the aircraft that shows volt
age,
> but that is BUSS voltage. It will not tell you what the generator is doin
g
> when the GEN LIGHT IS ON.
>
> The generator light can come on the way you are describing if you have a b
ad generator,
> a bad voltage regulator, or a bad Combined Device Relay. As I said,
> make sure you have good batteries before you proceed to the next step!
>
> Take the cover off the generator that provides access to the generator wir
ing.
> First check that you don't have a loose nut on the wires. It can happen a
nd
> cause intermittent output, which would cause this exact gripe. Moving on
, connect
> a volt-meter to the + and - wires. PLUS AND MINUS, so they won't just
> fall off because you are going to start the engine with these wires on, wi
th the
> meter back in the cockpit. You can put the cowling back on if you want. S
tart
> the engine and verify that once you are above idle, the voltage stabilizes
> at about 28 VDC. Run the engine up quickly to as high as you can holding t
he
> brakes. Be safe. The voltage should stay rock steady at 28 VDC. Depen
ding
> on exactly what it does will tell us if it is a bad generator, or bad volt
age
> regulator.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@ma
tronics.com] On Behalf Of Serge Svoysky
> Sent: Friday, May 12, 2017 1:16 PM
> Subject: [Non-DoD Source] Yak-List: Generator failure/ loss of electrical p
ower
>
>
>
> Hello all,
> Looking for advice on the following situation- everything looked normal on
the
> ground; "generator failure" on idle, but went away with RPM increase, proc
eeded
> to take off and got "generator failure" right away on departure. Landed to
check
> on the ground again, all looked normal, departed, light came on. Decided
> to go for a short flight, started losing all electrical equipment one by o
ne starting
> with the radio, but got it all back on final approach when power was reduc
ed.
> Worked fine (no light, charge as usual) on the ground.
>
> I'd appreciate for any help!
> YAK52 in NJ
>
> Thanks,
> serge
>
>
> ________________________________ Message 4 _____________________________
________
>
>
> Time: 12:43:49 PM PST US
> From: Pedro Cerveira Pinto <cerveirapinto@gmail.com>
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
>
> Hi Serge
> Have you checked the regulator voltage?
> Check and register voltage and negative/positive amperes(meaning battery i
s
> charging) at diferent settings
> Adjust regulator voltage with a srew driver to obtain 25-26 volts
>
> Also check batteries condition
>
> Cheers
>
> 2017-05-12 18:16 GMT+01:00 Serge Svoysky <ssvoysky@gmail.com>:
>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked normal o
n
>> the ground; "generator failure" on idle, but went away with RPM increase,
>> proceeded to take off and got "generator failure" right away on departure
.
>> Landed to check on the ground again, all looked normal, departed, light
>> came on. Decided to go for a short flight, started losing all electrical
>> equipment one by one starting with the radio, but got it all back on fina
l
>> approach when power was reduced. Worked fine (no light, charge as usual) o
n
>> the ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>>
>>
>
>
> --
> Pedro Cerveira Pinto
>
> ________________________________ Message 5 _____________________________
________
>
>
> Time: 03:20:12 PM PST US
> Subject: Re: [Non-DoD Source] Yak-List: Generator failure/ loss of electr
ical
> power
> From: Roger Kemp <f16viperdoc@me.com>
>
>
> Good gouge Mark. Knew you would surface on this topic.
> Doc
>
> Sent from my iPad
>
>> On May 12, 2017, at 2:33 PM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitt
erlich@navy.mil>
> wrote:
>>
>>
>> I am assuming we are dealing with a stock Russian generator system.
>>
>> It appears that the generator light is telling you the truth. The first t
hing
> I would suggest is that you keep a close eye on the volt/amp meter. Some Y
AK-52's
> have a meter that only shows current, and some have the meter with a butto
n
> on it that allows you to also check voltage. Which do you have?
>>
>> This meter tells you a lot about what is going on with your system. Yo
u should
> be running checks and looking at readings anytime you have a generator lig
ht
> issue.
>>
>> The generator light is controlled by the MAIN CONTACTOR RELAY on the Comb
ined
> Device DMR-200 relay assembly. When the MAIN CONTACTOR closes, the gener
ator
> light goes OUT. When that MAIN CONTACTOR OPENS the generator light comes o
n.
>
>>
>> So what appears to be happening in your case, is that when power is incre
ased,
> the generator is working, and the MAIN CONTACTOR closes. Generator power h
as
> to be above battery voltage for the main contactor to close. So the gener
ator
> voltage is there, the main contactor closes and everything is working.
>>
>> After take-off, the main contactor opened, we do not know why yet but it
was
> not over-voltage, because that trips out a small breaker which has to be r
eset
> to get power back. Since you did not have to reset anything, it was not o
ver-voltage.
> However, if the generator voltage dropped, the main contactor would
> open, the light would come on, and I suspect this is what happened.
>>
>> What is worse is that it is clearly apparent that you battery condition i
s very
> bad. When you lost the generator, the battery should have powered your wh
ole
> aircraft for at least 30 minutes!
>>
>> So first things first, put a hand held volt meter on your batteries (engi
ne not
> running) and check the voltage when you turn on the Master and verify that
> your battery voltage maintains 22-24 volts or so. If the voltage starts d
ropping
> to something like 19 or lower, you have weak and/or bad batteries. Replac
e
> them. The Russian system reverse current relay RELIES on you having good
batteries.
> Period end of story. If you have weak batteries, all kinds of bad
> things happen, and it appears from your story that you might very well hav
e stumbled
> into that condition.
>>
>> Once we get past the battery, the next issues is your generator system.
If
> you are lucky, you will have a meter installed in the aircraft that shows v
oltage,
> but that is BUSS voltage. It will not tell you what the generator is doin
g
> when the GEN LIGHT IS ON.
>>
>> The generator light can come on the way you are describing if you have a b
ad
> generator, a bad voltage regulator, or a bad Combined Device Relay. As I s
aid,
> make sure you have good batteries before you proceed to the next step!
>>
>> Take the cover off the generator that provides access to the generator wi
ring.
> First check that you don't have a loose nut on the wires. It can happen a
nd
> cause intermittent output, which would cause this exact gripe. Moving on
,
> connect a volt-meter to the + and - wires. PLUS AND MINUS, so they won't
just
> fall off because you are going to start the engine with these wires on, wi
th
> the meter back in the cockpit. You can put the cowling back on if you want
.
> Start the engine and verify that once you are above idle, the voltage stab
ilizes
> at about 28 VDC. Run the engine up quickly to as high as you can holding
> the brakes. Be safe. The voltage should stay rock steady at 28 VDC. D
epending
> on exactly what it does will tell us if it is a bad generator, or bad volt
age
> regulator.
>>
>> Mark
>>
>>
>> -----Original Message-----
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
atronics.com] On Behalf Of Serge Svoysky
>> Sent: Friday, May 12, 2017 1:16 PM
>> To: yak-list@matronics.com
>> Subject: [Non-DoD Source] Yak-List: Generator failure/ loss of electrical
power
>
>>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked normal o
n the
> ground; "generator failure" on idle, but went away with RPM increase, proc
eeded
> to take off and got "generator failure" right away on departure. Landed to
> check on the ground again, all looked normal, departed, light came on. Dec
ided
> to go for a short flight, started losing all electrical equipment one by o
ne
> starting with the radio, but got it all back on final approach when power w
as
> reduced. Worked fine (no light, charge as usual) on the ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>>
>>
>>
>>
>>
>>
>>
>
>
> ________________________________ Message 6 _____________________________
________
>
>
> Time: 05:07:26 PM PST US
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
> From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
>
>
> 25-26 Volts is too low if you want to charge the battery. Should be set
> to 28.5 volts
> Dennis
>
> A. Dennis Savarese
> 334-546-8182 (mobile)
> www.yak-52.com
> Skype - Yakguy1
>
>> On 5/12/2017 3:41 PM, Pedro Cerveira Pinto wrote:
>> Hi Serge
>> Have you checked the regulator voltage?
>> Check and register voltage and negative/positive amperes(meaning
>> battery is charging) at diferent settings
>> Adjust regulator voltage with a srew driver to obtain 25-26 volts
>>
>> Also check batteries condition
>>
>> Cheers
>>
>> 2017-05-12 18:16 GMT+01:00 Serge Svoysky <ssvoysky@gmail.com
>> <mailto:ssvoysky@gmail.com>>:
>>
>> <mailto:ssvoysky@gmail.com>>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked
>> normal on the ground; "generator failure" on idle, but went away
>> with RPM increase, proceeded to take off and got "generator
>> failure" right away on departure. Landed to check on the ground
>> again, all looked normal, departed, light came on. Decided to go
>> for a short flight, started losing all electrical equipment one by
>> one starting with the radio, but got it all back on final approach
>> when power was reduced. Worked fine (no light, charge as usual) on
>> the ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>> ========================
>> List" rel="noreferrer"
>> target="_blank">http://www.matronics.com/Navigator?Yak-List
>> ========================
>> FORUMS -
>> eferrer" target="_blank">http://forums.matronics.com
>> ========================
>> WIKI -
>> errer" target="_blank">http://wiki.matronics.com
>> ========================
>> b Site -
>> -Matt Dralle, List Admin.
>> rel="noreferrer" target="_blank">http://www.matronics.com/contribu
tion
>> ========================
>>
>>
>> --
>> Pedro Cerveira Pinto
>>
>
>
> ________________________________ Message 7 _____________________________
________
>
>
> Time: 05:31:49 PM PST US
> From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
> Subject: Re: [Non-DoD Source] Yak-List: Generator failure/ loss of elect
rical
> power
>
> Mark IS the man!Dennis
>
>
> From: Roger Kemp <f16viperdoc@me.com>
> To: yak-list@matronics.com
> Sent: Friday, May 12, 2017 6:21 PM
> Subject: Re: [Non-DoD Source] Yak-List: Generator failure/ loss of electri
> cal power
>
>
> Good gouge Mark. Knew you would surface on this topic.
> Doc
>
> Sent from my iPad
>
>> On May 12, 2017, at 2:33 PM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitt
> erlich@navy.mil> wrote:
>>
> .bitterlich@navy.mil>
>>
>> I am assuming we are dealing with a stock Russian generator system.=C2-
>
>>
>> It appears that the generator light is telling you the truth.=C2- The f
> irst thing I would suggest is that you keep a close eye on the volt/amp me
t
> er.=C2- Some YAK-52's have a meter that only shows current, and some hav
e
> the meter with a button on it that allows you to also check voltage.=C2-
> Which do you have?=C2-
>>
>> This meter tells you a lot about what is going on with your system.=C2-
> =C2- You should be running checks and looking at readings anytime you ha
> ve a generator light issue.=C2-
>>
>> The generator light is controlled by the MAIN CONTACTOR RELAY on the Comb
> ined Device DMR-200 relay assembly.=C2- When the MAIN CONTACTOR closes, t
> he generator light goes OUT.=C2- When that MAIN CONTACTOR OPENS the gene
r
> ator light comes on.=C2-
>>
>> So what appears to be happening in your case, is that when power is incre
> ased, the generator is working, and the MAIN CONTACTOR closes.=C2- Gener
a
> tor power has to be above battery voltage for the main contactor to close.
> =C2- So the generator voltage is there, the main contactor closes and ev
e
> rything is working.=C2-
>>
>> After take-off, the main contactor opened,=C2- we do not know why yet b
> ut it was not over-voltage, because that trips out a small breaker which h
a
> s to be reset to get power back.=C2- Since you did not have to reset any
t
> hing, it was not over-voltage.=C2- However, if the generator voltage dro
p
> ped, the main contactor would open, the light would come on, and I suspect
> this is what happened.=C2-
>>
>> What is worse is that it is clearly apparent that you battery condition i
> s very bad.=C2- When you lost the generator, the battery should have pow
e
> red your whole aircraft for at least 30 minutes!=C2-
>>
>> So first things first, put a hand held volt meter on your batteries (engi
> ne not running) and check the voltage when you turn on the Master and veri
f
> y that your battery voltage maintains 22-24 volts or so.=C2- If the volt
a
> ge starts dropping to something like 19 or lower, you have weak and/or bad
> batteries.=C2- Replace them.=C2- The Russian system reverse current re
l
> ay RELIES on you having good batteries.=C2- Period end of story.=C2- I
f
> you have weak batteries, all kinds of bad things happen, and it appears fr
> om your story that you might very well have stumbled into that condition.
> =C2-
>>
>> Once we get past the battery, the next issues is your generator system.
> =C2- If you are lucky, you will have a meter installed in the aircraft t
h
> at shows voltage, but that is BUSS voltage.=C2- It will not tell you wha
t
> the generator is doing when the GEN LIGHT IS ON.=C2- =C2-
>>
>> The generator light can come on the way you are describing if you have a
> bad generator, a bad voltage regulator, or a bad Combined Device Relay.=
C2
> - As I said, make sure you have good batteries before you proceed to the
> next step!=C2-
>>
>> Take the cover off the generator that provides access to the generator wi
> ring.=C2- First check that you don't have a loose nut on the wires.=C2
-
> It can happen and cause intermittent output, which would cause this exact
> gripe.=C2- Moving on, connect a volt-meter to the + and -=C2- wires.=
C2
> - PLUS AND MINUS, so they won't just fall off because you are going to st
> art the engine with these wires on, with the meter back in the cockpit. Yo
u
> can put the cowling back on if you want.=C2- Start the engine and verify
> that once you are above idle, the voltage stabilizes at about 28 VDC.=C2
> - Run the engine up quickly to as high as you can holding the brakes.=C2
> - Be safe.=C2- The voltage should stay rock steady at 28 VDC.=C2- Dep
> ending on exactly what it does will tell us if it is a bad generator, or b
a
> d voltage regulator.=C2-
>>
>> Mark
>>
>>
>> -----Original Message-----
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
> atronics.com] On Behalf Of Serge Svoysky
>> Sent: Friday, May 12, 2017 1:16 PM
>> To: yak-list@matronics.com
>> Subject: [Non-DoD Source] Yak-List: Generator failure/ loss of electrical
> power
>>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked normal o
> n the ground; "generator failure" on idle, but went away with RPM increase
,
> proceeded to take off and got "generator failure" right away on departure.
> Landed to check on the ground again, all looked normal, departed, light ca
> me on. Decided to go for a short flight, started losing all electrical equ
i
> pment one by one starting with the radio, but got it all back on final app
r
> oach when power was reduced. Worked fine (no light, charge as usual) on th
e
> ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>>
>>
>>
>>
>>
>>
>>
>
> S -
> WIKI -
> -
> =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
>
>
>
>
> ________________________________ Message 8 _____________________________
________
>
>
> Time: 06:04:03 PM PST US
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
> From: Cerveira Pinto <cerveirapinto@gmail.com>
>
> SGkgRGVubmlzIEkgaGF2ZSBteSAyeCAxMlYgZ2VsIGJhdHRlcmllcyBmb3IgNSB5ZWFycyBuby
Bw
> cm9ibGVtIHNvIGZhci4gTXkgb3BpbmlvbiBpcyB0aGF0IDI4LjVWIHdpbGwgZGVncmFkZSBnZW
wg
> YmF0dGVyaWVzIHRvIHNvb24uUmVnYXJkc8KgCgoKRW52aWFkbyBhIHBhcnRpciBkbyBtZXUgc2
1h
> cnRwaG9uZSBTYW1zdW5nIEdhbGF4eS4KLS0tLS0tLS0gTWVuc2FnZW0gb3JpZ2luYWwgLS0tLS
0t
> LS1EZTogIkEuIERlbm5pcyBTYXZhcmVzZSIgPGRzYXZhcmVzZTA4MTJAYmVsbHNvdXRoLm5ldD
4g
> RGF0YTogMTIvMDUvMTcgIDIxOjA1ICAoR01ULTAzOjAwKSBQYXJhOiB5YWstbGlzdEBtYXRyb2
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> Y3MuY29tIEFzc3VudG86IFJlOiBZYWstTGlzdDogR2VuZXJhdG9yIGZhaWx1cmUvIGxvc3Mgb2
Yg
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>
> ________________________________ Message 9 _____________________________
________
>
>
> Time: 06:41:46 PM PST US
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
> From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
>
>
> 5 years is pushing the life expectancy of any battery. You may just
> want to bite the bullet and replacethem and then see if the problem
> still exists.
>
> The M14 maintenancemanual clearly states the output voltage should be
> adjusted via the rheostatto to 28 - 28.5 volts. But you do what you
> want. You don't have to believe me. Look it up yourself.
>
> Let me ask you this question. If it were a 12 volt battery in your car,
> would you want the alternator output to run at say 12.8 volts torecharge
> the battery that should read 12.6-13 volts or would you want that
> alternator putting out 13-14 volts? How long do you think it will take
> to recharge your 24 volt batteries under load to recharge at 25 volts?
>
> Dennis
>
>
> A. Dennis Savarese
> 334-546-8182 (mobile)
> www.yak-52.com
> Skype - Yakguy1
>
>> On 5/12/2017 9:01 PM, Cerveira Pinto wrote:
>> Hi Dennis I have my 2x 12V gel batteries for 5 years no problem so
>> far. My opinion is that 28.5V will degrade gel batteries to soon.
>> Regards
>>
>>
>> Enviado a partir do meu smartphone Samsung Galaxy.
>>
>> -------- Mensagem original --------
>> De: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
>> Data: 12/05/17 21:05 (GMT-03:00)
>> Para: yak-list@matronics.com
>> Assunto: Re: Yak-List: Generator failure/ loss of electrical power
>>
>> <dsavarese0812@bellsouth.net>
>>
>> 25-26 Volts is too low if you want to charge the battery. Should be set
>> to 28.5 volts
>> Dennis
>>
>> A. Dennis Savarese
>> 334-546-8182 (mobile)
>> www.yak-52.com
>> Skype - Yakguy1
>>
>>> On 5/12/2017 3:41 PM, Pedro Cerveira Pinto wrote:
>>> Hi Serge
>>> Have you checked the regulator voltage?
>>> Check and register voltage and negative/positive amperes(meaning
>>> battery is charging) at diferent settings
>>> Adjust regulator voltage with a srew driver to obtain 25-26 volts
>>>
>>> Also check batteries condition
>>>
>>> Cheers
>>>
>>> 2017-05-12 18:16 GMT+01:00 Serge Svoysky <ssvoysky@gmail.com
>>> <mailto:ssvoysky@gmail.com>>:
>>>
>>> <mailto:ssvoysky@gmail.com>>
>>>
>>> Hello all,
>>> Looking for advice on the following situation- everything looked
>>> normal on the ground; "generator failure" on idle, but went away
>>> with RPM increase, proceeded to take off and got "generator
>>> failure" right away on departure. Landed to check on the ground
>>> again, all looked normal, departed, light came on. Decided to go
>>> for a short flight, started losing all electrical equipment one by
>>> one starting with the radio, but got it all back on final approach
>>> when power was reduced. Worked fine (no light, charge as usual) on
>>> the ground.
>>>
>>> I'd appreciate for any help!
>>> YAK52 in NJ
>>>
>>> Thanks,
>>> serge
>>> =======================
===========
>>> List" rel="noreferrer"
>>> target="_blank">http://www.matronics.com/Navigator?Yak-List
>>> =======================
===========
>>> FORUMS -
>>> eferrer" target="_blank">http://forums.matronics.com
>>> =======================
===========
>>> WIKI -
>>> errer" target="_blank">http://wiki.matronics.com
>>> =======================
===========
>>> b Site -
>>> -Matt Dralle, List Admin.
>>> rel="noreferrer"
>> target="_blank">http://www.matronics.com/contribution
>>> =======================
===========
>>>
>>>
>>>
>>>
>>>
>>>
>>> --
>>> Pedro Cerveira Pinto
>>>
>>
>>
>
>
> ________________________________ Message 10 ____________________________
________
>
>
> Time: 07:55:39 PM PST US
> From: "Jason ." <jason360@hotmail.com>
> Subject: Yak-List: Yak 55M Throttle Cable
>
> Has anyone ever had to replace a throttle cable on the Yak 55M? I have be
e
> n having an erratic throttle lever to power setting issue (lever position n
> ot matching power output). Suspecting the throttle cable is the issue. An
y
> one ever encounter this?
>
>
> Thank you
>
>
> Jason
>
>
>
==========================
=========
==========================
=========
==========================
=========
==========================
=========
==========================
=========
>
>
>
>
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| Subject: | Generator failure/ loss of electrical power |
The generator was replaced today and "generator failure" light no longer com
es ON. Hope it is a permanent fix. Thanks everyone for helping me out.
> On May 13, 2017, at 3:04 AM, Yak-List Digest Server <yak-list@matronics.co
m> wrote:
>
> *
>
> =========================
========================
> Online Versions of Today's List Digest Archive
> =========================
========================
>
> Today's complete Yak-List Digest can also be found in either of the
> two Web Links listed below. The .html file includes the Digest formatted
> in HTML for viewing with a web browser and features Hyperlinked Indexes
> and Message Navigation. The .txt file includes the plain ASCII version
> of the Yak-List Digest and can be viewed with a generic text editor
> such as Notepad or with a web browser.
>
> HTML Version:
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=htm
l&Chapter 17-05-12&Archive=Yak
>
> Text Version:
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt
&Chapter 17-05-12&Archive=Yak
>
>
> =========================
======================
> EMail Version of Today's List Digest Archive
> =========================
======================
>
>
> ----------------------------------------------------------
> Yak-List Digest Archive
> ---
> Total Messages Posted Fri 05/12/17: 10
> ----------------------------------------------------------
>
>
> Today's Message Index:
> ----------------------
>
> 1. 10:18 AM - Generator failure/ loss of electrical power (Serge Svo
ysky)
> 2. 12:16 PM - Re: Generator failure/ loss of electrical power (Roger K
emp)
> 3. 12:36 PM - Re: [Non-DoD Source] Generator failure/ loss of electric
al power (Bitterlich, Mark G CIV NAVAIR, WD)
> 4. 12:43 PM - Re: Generator failure/ loss of electrical power (Pedro C
erveira Pinto)
> 5. 03:20 PM - Re: [Non-DoD Source] Generator failure/ loss of electric
al power (Roger Kemp)
> 6. 05:07 PM - Re: Generator failure/ loss of electrical power (A. Den
nis Savarese)
> 7. 05:31 PM - Re: [Non-DoD Source] Generator failure/ loss of electric
al power (A. Dennis Savarese)
> 8. 06:04 PM - Re: Generator failure/ loss of electrical power (Cervei
ra Pinto)
> 9. 06:41 PM - Re: Generator failure/ loss of electrical power (A. Den
nis Savarese)
> 10. 07:55 PM - Yak 55M Throttle Cable (Jason .)
>
>
>
> ________________________________ Message 1 _____________________________
________
>
>
> Time: 10:18:57 AM PST US
> From: Serge Svoysky <ssvoysky@gmail.com>
> Subject: Yak-List: Generator failure/ loss of electrical power
>
>
> Hello all,
> Looking for advice on the following situation- everything looked normal on
the
> ground; "generator failure" on idle, but went away with RPM increase, proc
eeded
> to take off and got "generator failure" right away on departure. Landed to
check
> on the ground again, all looked normal, departed, light came on. Decided
> to go for a short flight, started losing all electrical equipment one by o
ne starting
> with the radio, but got it all back on final approach when power was reduc
ed.
> Worked fine (no light, charge as usual) on the ground.
>
> I'd appreciate for any help!
> YAK52 in NJ
>
> Thanks,
> serge
>
>
> ________________________________ Message 2 _____________________________
________
>
>
> Time: 12:16:30 PM PST US
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
> From: Roger Kemp <f16viperdoc@me.com>
>
>
> What was your voltage meter doing? Was it the "GenFault" light that came o
n and
> at what %RPM were you getting the light.
> Doc
> Doc
>
> Sent from my iPad
>
>> On May 12, 2017, at 12:16 PM, Serge Svoysky <ssvoysky@gmail.com> wrote:
>>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked normal o
n the
> ground; "generator failure" on idle, but went away with RPM increase, proc
eeded
> to take off and got "generator failure" right away on departure. Landed to
> check on the ground again, all looked normal, departed, light came on. Dec
ided
> to go for a short flight, started losing all electrical equipment one by o
ne
> starting with the radio, but got it all back on final approach when power w
as
> reduced. Worked fine (no light, charge as usual) on the ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>>
>>
>>
>
>
> ________________________________ Message 3 _____________________________
________
>
>
> Time: 12:36:14 PM PST US
> From: "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich@navy.mil>
> Subject: RE: [Non-DoD Source] Yak-List: Generator failure/ loss of electr
ical
> power
>
>
> I am assuming we are dealing with a stock Russian generator system.
>
> It appears that the generator light is telling you the truth. The first t
hing
> I would suggest is that you keep a close eye on the volt/amp meter. Some Y
AK-52's
> have a meter that only shows current, and some have the meter with a butto
n
> on it that allows you to also check voltage. Which do you have?
>
> This meter tells you a lot about what is going on with your system. You
should
> be running checks and looking at readings anytime you have a generator lig
ht
> issue.
>
> The generator light is controlled by the MAIN CONTACTOR RELAY on the Combi
ned Device
> DMR-200 relay assembly. When the MAIN CONTACTOR closes, the generator
> light goes OUT. When that MAIN CONTACTOR OPENS the generator light comes o
n.
>
>
> So what appears to be happening in your case, is that when power is increa
sed,
> the generator is working, and the MAIN CONTACTOR closes. Generator power h
as
> to be above battery voltage for the main contactor to close. So the gener
ator
> voltage is there, the main contactor closes and everything is working.
>
> After take-off, the main contactor opened, we do not know why yet but it w
as not
> over-voltage, because that trips out a small breaker which has to be reset
> to get power back. Since you did not have to reset anything, it was not o
ver-voltage.
> However, if the generator voltage dropped, the main contactor would
> open, the light would come on, and I suspect this is what happened.
>
> What is worse is that it is clearly apparent that you battery condition is
very
> bad. When you lost the generator, the battery should have powered your wh
ole
> aircraft for at least 30 minutes!
>
> So first things first, put a hand held volt meter on your batteries (engin
e not
> running) and check the voltage when you turn on the Master and verify that
your
> battery voltage maintains 22-24 volts or so. If the voltage starts droppi
ng
> to something like 19 or lower, you have weak and/or bad batteries. Replac
e
> them. The Russian system reverse current relay RELIES on you having good
batteries.
> Period end of story. If you have weak batteries, all kinds of bad things
> happen, and it appears from your story that you might very well have stumb
led
> into that condition.
>
> Once we get past the battery, the next issues is your generator system. I
f you
> are lucky, you will have a meter installed in the aircraft that shows volt
age,
> but that is BUSS voltage. It will not tell you what the generator is doin
g
> when the GEN LIGHT IS ON.
>
> The generator light can come on the way you are describing if you have a b
ad generator,
> a bad voltage regulator, or a bad Combined Device Relay. As I said,
> make sure you have good batteries before you proceed to the next step!
>
> Take the cover off the generator that provides access to the generator wir
ing.
> First check that you don't have a loose nut on the wires. It can happen a
nd
> cause intermittent output, which would cause this exact gripe. Moving on
, connect
> a volt-meter to the + and - wires. PLUS AND MINUS, so they won't just
> fall off because you are going to start the engine with these wires on, wi
th the
> meter back in the cockpit. You can put the cowling back on if you want. S
tart
> the engine and verify that once you are above idle, the voltage stabilizes
> at about 28 VDC. Run the engine up quickly to as high as you can holding t
he
> brakes. Be safe. The voltage should stay rock steady at 28 VDC. Depen
ding
> on exactly what it does will tell us if it is a bad generator, or bad volt
age
> regulator.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@ma
tronics.com] On Behalf Of Serge Svoysky
> Sent: Friday, May 12, 2017 1:16 PM
> Subject: [Non-DoD Source] Yak-List: Generator failure/ loss of electrical p
ower
>
>
>
> Hello all,
> Looking for advice on the following situation- everything looked normal on
the
> ground; "generator failure" on idle, but went away with RPM increase, proc
eeded
> to take off and got "generator failure" right away on departure. Landed to
check
> on the ground again, all looked normal, departed, light came on. Decided
> to go for a short flight, started losing all electrical equipment one by o
ne starting
> with the radio, but got it all back on final approach when power was reduc
ed.
> Worked fine (no light, charge as usual) on the ground.
>
> I'd appreciate for any help!
> YAK52 in NJ
>
> Thanks,
> serge
>
>
> ________________________________ Message 4 _____________________________
________
>
>
> Time: 12:43:49 PM PST US
> From: Pedro Cerveira Pinto <cerveirapinto@gmail.com>
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
>
> Hi Serge
> Have you checked the regulator voltage?
> Check and register voltage and negative/positive amperes(meaning battery i
s
> charging) at diferent settings
> Adjust regulator voltage with a srew driver to obtain 25-26 volts
>
> Also check batteries condition
>
> Cheers
>
> 2017-05-12 18:16 GMT+01:00 Serge Svoysky <ssvoysky@gmail.com>:
>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked normal o
n
>> the ground; "generator failure" on idle, but went away with RPM increase,
>> proceeded to take off and got "generator failure" right away on departure
.
>> Landed to check on the ground again, all looked normal, departed, light
>> came on. Decided to go for a short flight, started losing all electrical
>> equipment one by one starting with the radio, but got it all back on fina
l
>> approach when power was reduced. Worked fine (no light, charge as usual) o
n
>> the ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>>
>>
>
>
> --
> Pedro Cerveira Pinto
>
> ________________________________ Message 5 _____________________________
________
>
>
> Time: 03:20:12 PM PST US
> Subject: Re: [Non-DoD Source] Yak-List: Generator failure/ loss of electr
ical
> power
> From: Roger Kemp <f16viperdoc@me.com>
>
>
> Good gouge Mark. Knew you would surface on this topic.
> Doc
>
> Sent from my iPad
>
>> On May 12, 2017, at 2:33 PM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitt
erlich@navy.mil>
> wrote:
>>
>>
>> I am assuming we are dealing with a stock Russian generator system.
>>
>> It appears that the generator light is telling you the truth. The first t
hing
> I would suggest is that you keep a close eye on the volt/amp meter. Some Y
AK-52's
> have a meter that only shows current, and some have the meter with a butto
n
> on it that allows you to also check voltage. Which do you have?
>>
>> This meter tells you a lot about what is going on with your system. Yo
u should
> be running checks and looking at readings anytime you have a generator lig
ht
> issue.
>>
>> The generator light is controlled by the MAIN CONTACTOR RELAY on the Comb
ined
> Device DMR-200 relay assembly. When the MAIN CONTACTOR closes, the gener
ator
> light goes OUT. When that MAIN CONTACTOR OPENS the generator light comes o
n.
>
>>
>> So what appears to be happening in your case, is that when power is incre
ased,
> the generator is working, and the MAIN CONTACTOR closes. Generator power h
as
> to be above battery voltage for the main contactor to close. So the gener
ator
> voltage is there, the main contactor closes and everything is working.
>>
>> After take-off, the main contactor opened, we do not know why yet but it
was
> not over-voltage, because that trips out a small breaker which has to be r
eset
> to get power back. Since you did not have to reset anything, it was not o
ver-voltage.
> However, if the generator voltage dropped, the main contactor would
> open, the light would come on, and I suspect this is what happened.
>>
>> What is worse is that it is clearly apparent that you battery condition i
s very
> bad. When you lost the generator, the battery should have powered your wh
ole
> aircraft for at least 30 minutes!
>>
>> So first things first, put a hand held volt meter on your batteries (engi
ne not
> running) and check the voltage when you turn on the Master and verify that
> your battery voltage maintains 22-24 volts or so. If the voltage starts d
ropping
> to something like 19 or lower, you have weak and/or bad batteries. Replac
e
> them. The Russian system reverse current relay RELIES on you having good
batteries.
> Period end of story. If you have weak batteries, all kinds of bad
> things happen, and it appears from your story that you might very well hav
e stumbled
> into that condition.
>>
>> Once we get past the battery, the next issues is your generator system.
If
> you are lucky, you will have a meter installed in the aircraft that shows v
oltage,
> but that is BUSS voltage. It will not tell you what the generator is doin
g
> when the GEN LIGHT IS ON.
>>
>> The generator light can come on the way you are describing if you have a b
ad
> generator, a bad voltage regulator, or a bad Combined Device Relay. As I s
aid,
> make sure you have good batteries before you proceed to the next step!
>>
>> Take the cover off the generator that provides access to the generator wi
ring.
> First check that you don't have a loose nut on the wires. It can happen a
nd
> cause intermittent output, which would cause this exact gripe. Moving on
,
> connect a volt-meter to the + and - wires. PLUS AND MINUS, so they won't
just
> fall off because you are going to start the engine with these wires on, wi
th
> the meter back in the cockpit. You can put the cowling back on if you want
.
> Start the engine and verify that once you are above idle, the voltage stab
ilizes
> at about 28 VDC. Run the engine up quickly to as high as you can holding
> the brakes. Be safe. The voltage should stay rock steady at 28 VDC. D
epending
> on exactly what it does will tell us if it is a bad generator, or bad volt
age
> regulator.
>>
>> Mark
>>
>>
>> -----Original Message-----
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
atronics.com] On Behalf Of Serge Svoysky
>> Sent: Friday, May 12, 2017 1:16 PM
>> To: yak-list@matronics.com
>> Subject: [Non-DoD Source] Yak-List: Generator failure/ loss of electrical
power
>
>>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked normal o
n the
> ground; "generator failure" on idle, but went away with RPM increase, proc
eeded
> to take off and got "generator failure" right away on departure. Landed to
> check on the ground again, all looked normal, departed, light came on. Dec
ided
> to go for a short flight, started losing all electrical equipment one by o
ne
> starting with the radio, but got it all back on final approach when power w
as
> reduced. Worked fine (no light, charge as usual) on the ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>>
>>
>>
>>
>>
>>
>>
>
>
> ________________________________ Message 6 _____________________________
________
>
>
> Time: 05:07:26 PM PST US
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
> From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
>
>
> 25-26 Volts is too low if you want to charge the battery. Should be set
> to 28.5 volts
> Dennis
>
> A. Dennis Savarese
> 334-546-8182 (mobile)
> www.yak-52.com
> Skype - Yakguy1
>
>> On 5/12/2017 3:41 PM, Pedro Cerveira Pinto wrote:
>> Hi Serge
>> Have you checked the regulator voltage?
>> Check and register voltage and negative/positive amperes(meaning
>> battery is charging) at diferent settings
>> Adjust regulator voltage with a srew driver to obtain 25-26 volts
>>
>> Also check batteries condition
>>
>> Cheers
>>
>> 2017-05-12 18:16 GMT+01:00 Serge Svoysky <ssvoysky@gmail.com
>> <mailto:ssvoysky@gmail.com>>:
>>
>> <mailto:ssvoysky@gmail.com>>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked
>> normal on the ground; "generator failure" on idle, but went away
>> with RPM increase, proceeded to take off and got "generator
>> failure" right away on departure. Landed to check on the ground
>> again, all looked normal, departed, light came on. Decided to go
>> for a short flight, started losing all electrical equipment one by
>> one starting with the radio, but got it all back on final approach
>> when power was reduced. Worked fine (no light, charge as usual) on
>> the ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>> ========================
>> List" rel="noreferrer"
>> target="_blank">http://www.matronics.com/Navigator?Yak-List
>> ========================
>> FORUMS -
>> eferrer" target="_blank">http://forums.matronics.com
>> ========================
>> WIKI -
>> errer" target="_blank">http://wiki.matronics.com
>> ========================
>> b Site -
>> -Matt Dralle, List Admin.
>> rel="noreferrer" target="_blank">http://www.matronics.com/contribu
tion
>> ========================
>>
>>
>> --
>> Pedro Cerveira Pinto
>>
>
>
> ________________________________ Message 7 _____________________________
________
>
>
> Time: 05:31:49 PM PST US
> From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
> Subject: Re: [Non-DoD Source] Yak-List: Generator failure/ loss of elect
rical
> power
>
> Mark IS the man!Dennis
>
>
> From: Roger Kemp <f16viperdoc@me.com>
> To: yak-list@matronics.com
> Sent: Friday, May 12, 2017 6:21 PM
> Subject: Re: [Non-DoD Source] Yak-List: Generator failure/ loss of electri
> cal power
>
>
> Good gouge Mark. Knew you would surface on this topic.
> Doc
>
> Sent from my iPad
>
>> On May 12, 2017, at 2:33 PM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitt
> erlich@navy.mil> wrote:
>>
> .bitterlich@navy.mil>
>>
>> I am assuming we are dealing with a stock Russian generator system.=C2-
>
>>
>> It appears that the generator light is telling you the truth.=C2- The f
> irst thing I would suggest is that you keep a close eye on the volt/amp me
t
> er.=C2- Some YAK-52's have a meter that only shows current, and some hav
e
> the meter with a button on it that allows you to also check voltage.=C2-
> Which do you have?=C2-
>>
>> This meter tells you a lot about what is going on with your system.=C2-
> =C2- You should be running checks and looking at readings anytime you ha
> ve a generator light issue.=C2-
>>
>> The generator light is controlled by the MAIN CONTACTOR RELAY on the Comb
> ined Device DMR-200 relay assembly.=C2- When the MAIN CONTACTOR closes, t
> he generator light goes OUT.=C2- When that MAIN CONTACTOR OPENS the gene
r
> ator light comes on.=C2-
>>
>> So what appears to be happening in your case, is that when power is incre
> ased, the generator is working, and the MAIN CONTACTOR closes.=C2- Gener
a
> tor power has to be above battery voltage for the main contactor to close.
> =C2- So the generator voltage is there, the main contactor closes and ev
e
> rything is working.=C2-
>>
>> After take-off, the main contactor opened,=C2- we do not know why yet b
> ut it was not over-voltage, because that trips out a small breaker which h
a
> s to be reset to get power back.=C2- Since you did not have to reset any
t
> hing, it was not over-voltage.=C2- However, if the generator voltage dro
p
> ped, the main contactor would open, the light would come on, and I suspect
> this is what happened.=C2-
>>
>> What is worse is that it is clearly apparent that you battery condition i
> s very bad.=C2- When you lost the generator, the battery should have pow
e
> red your whole aircraft for at least 30 minutes!=C2-
>>
>> So first things first, put a hand held volt meter on your batteries (engi
> ne not running) and check the voltage when you turn on the Master and veri
f
> y that your battery voltage maintains 22-24 volts or so.=C2- If the volt
a
> ge starts dropping to something like 19 or lower, you have weak and/or bad
> batteries.=C2- Replace them.=C2- The Russian system reverse current re
l
> ay RELIES on you having good batteries.=C2- Period end of story.=C2- I
f
> you have weak batteries, all kinds of bad things happen, and it appears fr
> om your story that you might very well have stumbled into that condition.
> =C2-
>>
>> Once we get past the battery, the next issues is your generator system.
> =C2- If you are lucky, you will have a meter installed in the aircraft t
h
> at shows voltage, but that is BUSS voltage.=C2- It will not tell you wha
t
> the generator is doing when the GEN LIGHT IS ON.=C2- =C2-
>>
>> The generator light can come on the way you are describing if you have a
> bad generator, a bad voltage regulator, or a bad Combined Device Relay.=
C2
> - As I said, make sure you have good batteries before you proceed to the
> next step!=C2-
>>
>> Take the cover off the generator that provides access to the generator wi
> ring.=C2- First check that you don't have a loose nut on the wires.=C2
-
> It can happen and cause intermittent output, which would cause this exact
> gripe.=C2- Moving on, connect a volt-meter to the + and -=C2- wires.=
C2
> - PLUS AND MINUS, so they won't just fall off because you are going to st
> art the engine with these wires on, with the meter back in the cockpit. Yo
u
> can put the cowling back on if you want.=C2- Start the engine and verify
> that once you are above idle, the voltage stabilizes at about 28 VDC.=C2
> - Run the engine up quickly to as high as you can holding the brakes.=C2
> - Be safe.=C2- The voltage should stay rock steady at 28 VDC.=C2- Dep
> ending on exactly what it does will tell us if it is a bad generator, or b
a
> d voltage regulator.=C2-
>>
>> Mark
>>
>>
>> -----Original Message-----
>> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
> atronics.com] On Behalf Of Serge Svoysky
>> Sent: Friday, May 12, 2017 1:16 PM
>> To: yak-list@matronics.com
>> Subject: [Non-DoD Source] Yak-List: Generator failure/ loss of electrical
> power
>>
>>
>> Hello all,
>> Looking for advice on the following situation- everything looked normal o
> n the ground; "generator failure" on idle, but went away with RPM increase
,
> proceeded to take off and got "generator failure" right away on departure.
> Landed to check on the ground again, all looked normal, departed, light ca
> me on. Decided to go for a short flight, started losing all electrical equ
i
> pment one by one starting with the radio, but got it all back on final app
r
> oach when power was reduced. Worked fine (no light, charge as usual) on th
e
> ground.
>>
>> I'd appreciate for any help!
>> YAK52 in NJ
>>
>> Thanks,
>> serge
>>
>>
>>
>>
>>
>>
>>
>
> S -
> WIKI -
> -
> =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
>
>
>
>
> ________________________________ Message 8 _____________________________
________
>
>
> Time: 06:04:03 PM PST US
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
> From: Cerveira Pinto <cerveirapinto@gmail.com>
>
> SGkgRGVubmlzIEkgaGF2ZSBteSAyeCAxMlYgZ2VsIGJhdHRlcmllcyBmb3IgNSB5ZWFycyBuby
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> wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIC
1N
> YXR0IERyYWxsZSwgTGlzdCBBZG1pbi4KXy09wqDCoCAtLT4gaHR0cDovL3d3dy5tYXRyb25pY3
Mu
> Y29tL2NvbnRyaWJ1dGlvbgpfLT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT
09
> PT09PT09PT09PT09PT09PT09PT09PQoKCgo
>
> ________________________________ Message 9 _____________________________
________
>
>
> Time: 06:41:46 PM PST US
> Subject: Re: Yak-List: Generator failure/ loss of electrical power
> From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
>
>
> 5 years is pushing the life expectancy of any battery. You may just
> want to bite the bullet and replacethem and then see if the problem
> still exists.
>
> The M14 maintenancemanual clearly states the output voltage should be
> adjusted via the rheostatto to 28 - 28.5 volts. But you do what you
> want. You don't have to believe me. Look it up yourself.
>
> Let me ask you this question. If it were a 12 volt battery in your car,
> would you want the alternator output to run at say 12.8 volts torecharge
> the battery that should read 12.6-13 volts or would you want that
> alternator putting out 13-14 volts? How long do you think it will take
> to recharge your 24 volt batteries under load to recharge at 25 volts?
>
> Dennis
>
>
> A. Dennis Savarese
> 334-546-8182 (mobile)
> www.yak-52.com
> Skype - Yakguy1
>
>> On 5/12/2017 9:01 PM, Cerveira Pinto wrote:
>> Hi Dennis I have my 2x 12V gel batteries for 5 years no problem so
>> far. My opinion is that 28.5V will degrade gel batteries to soon.
>> Regards
>>
>>
>> Enviado a partir do meu smartphone Samsung Galaxy.
>>
>> -------- Mensagem original --------
>> De: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
>> Data: 12/05/17 21:05 (GMT-03:00)
>> Para: yak-list@matronics.com
>> Assunto: Re: Yak-List: Generator failure/ loss of electrical power
>>
>> <dsavarese0812@bellsouth.net>
>>
>> 25-26 Volts is too low if you want to charge the battery. Should be set
>> to 28.5 volts
>> Dennis
>>
>> A. Dennis Savarese
>> 334-546-8182 (mobile)
>> www.yak-52.com
>> Skype - Yakguy1
>>
>>> On 5/12/2017 3:41 PM, Pedro Cerveira Pinto wrote:
>>> Hi Serge
>>> Have you checked the regulator voltage?
>>> Check and register voltage and negative/positive amperes(meaning
>>> battery is charging) at diferent settings
>>> Adjust regulator voltage with a srew driver to obtain 25-26 volts
>>>
>>> Also check batteries condition
>>>
>>> Cheers
>>>
>>> 2017-05-12 18:16 GMT+01:00 Serge Svoysky <ssvoysky@gmail.com
>>> <mailto:ssvoysky@gmail.com>>:
>>>
>>> <mailto:ssvoysky@gmail.com>>
>>>
>>> Hello all,
>>> Looking for advice on the following situation- everything looked
>>> normal on the ground; "generator failure" on idle, but went away
>>> with RPM increase, proceeded to take off and got "generator
>>> failure" right away on departure. Landed to check on the ground
>>> again, all looked normal, departed, light came on. Decided to go
>>> for a short flight, started losing all electrical equipment one by
>>> one starting with the radio, but got it all back on final approach
>>> when power was reduced. Worked fine (no light, charge as usual) on
>>> the ground.
>>>
>>> I'd appreciate for any help!
>>> YAK52 in NJ
>>>
>>> Thanks,
>>> serge
>>> =======================
===========
>>> List" rel="noreferrer"
>>> target="_blank">http://www.matronics.com/Navigator?Yak-List
>>> =======================
===========
>>> FORUMS -
>>> eferrer" target="_blank">http://forums.matronics.com
>>> =======================
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>>> errer" target="_blank">http://wiki.matronics.com
>>> =======================
===========
>>> b Site -
>>> -Matt Dralle, List Admin.
>>> rel="noreferrer"
>> target="_blank">http://www.matronics.com/contribution
>>> =======================
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>>>
>>>
>>>
>>>
>>>
>>>
>>> --
>>> Pedro Cerveira Pinto
>>>
>>
>>
>
>
> ________________________________ Message 10 ____________________________
________
>
>
> Time: 07:55:39 PM PST US
> From: "Jason ." <jason360@hotmail.com>
> Subject: Yak-List: Yak 55M Throttle Cable
>
> Has anyone ever had to replace a throttle cable on the Yak 55M? I have be
e
> n having an erratic throttle lever to power setting issue (lever position n
> ot matching power output). Suspecting the throttle cable is the issue. An
y
> one ever encounter this?
>
>
> Thank you
>
>
> Jason
>
>
>
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