Today's Message Index:
----------------------
1. 08:23 AM - Trouble shooting the Rotax Rectifer/Regulator (ricklach)
2. 08:51 AM - Re: EGT Temps (rampil)
3. 08:55 AM - Re: Trouble shooting the Rotax Rectifer/Regulator (Pete Christensen)
4. 01:18 PM - Re: Trouble shooting the Rotax Rectifer/Regulator (Noel)
5. 02:49 PM - Re: Re: EGT Temps (rparigor@suffolk.lib.ny.us)
6. 03:11 PM - Re: Trouble shooting the Rotax Rectifer/Regulator (Hugh)
7. 03:11 PM - Re: Trouble shooting the Rotax Rectifier/Regulator (Les Goldner)
8. 03:38 PM - Low oil temps on 912ULS (Les Goldner)
9. 04:39 PM - Re: Trouble shooting the Rotax Rectifer/Regulator (Noel)
10. 04:44 PM - Re: Trouble shooting the Rotax Rectifier/Regulator (Noel)
11. 05:13 PM - Re: Low oil temps on 912ULS (Roger Lee)
12. 05:15 PM - Re: Low oil temps on 912ULS (Matt Tucciarone)
13. 06:44 PM - Re: Trouble shooting the Rotax Rectifer/Regulator (TheWanderingWench)
14. 07:25 PM - Re: Trouble shooting the Rotax Rectifer/Regulator (Bob Comperini)
15. 07:39 PM - Re: Trouble shooting the Rotax Rectifer/Regulator (Noel)
Message 1
INDEX | Back to Main INDEX |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Trouble shooting the Rotax Rectifer/Regulator |
I am having trouble with the 912 Rectifier/Regulator. It seems to work fine at
first start up and for the next 20 to 30 minutes. But some time after start-up
when the heat of summer soaks in the output start to go down to what looks like
battery voltage of around 11.9 to 12.2. After looking everywhere and reading
all the available manuals I find almost nothing about how to check out the system.
Can anyone help with some good trouble shooting information like?
1. When checking out the engine alternator output do you disconnect the two leads
to check the voltage or just measure it at the Rectifier/Regulator?
2. How do you check out the rectifier/regulator?
Any help would be greatly appreciated.
Rick
--------
Rick
N35 26.700, W118 16.743
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245707#245707
Message 2
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
The book values do not always pan out. I have 4 EGTs in the
prescribed spots and seldom see even 1500F on the back cylinders
and 1200F in the front. My system is digital and calibrated (Blue Mountain).
BTW: Rotax does not recommend EGT monitoring on the 912/912s
because there is no way in a stock engine to alter the mixture, and
seeing the usual values just makes owner anxious and leads to excess
calls to the distributors who can only reassure.
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245713#245713
Message 3
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Trouble shooting the Rotax Rectifer/Regulator |
Been there, done that, replaced Rectifier/Regulator and that worked.
http://www.kitfoxaircraft.com/ has them at a good price. I wasted a week
trying to troubleshoot.
Pete
----- Original Message -----
From: "ricklach" <rick@ravengear.us>
Sent: Thursday, May 28, 2009 9:22 AM
Subject: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulator
>
> I am having trouble with the 912 Rectifier/Regulator. It seems to work
> fine at first start up and for the next 20 to 30 minutes. But some time
> after start-up when the heat of summer soaks in the output start to go
> down to what looks like battery voltage of around 11.9 to 12.2. After
> looking everywhere and reading all the available manuals I find almost
> nothing about how to check out the system. Can anyone help with some good
> trouble shooting information like?
>
> 1. When checking out the engine alternator output do you disconnect the
> two leads to check the voltage or just measure it at the
> Rectifier/Regulator?
>
> 2. How do you check out the rectifier/regulator?
> Any help would be greatly appreciated.
>
> Rick
>
> --------
> Rick
> N35 26.700, W118 16.743
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245707#245707
>
>
>
Message 4
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Trouble shooting the Rotax Rectifer/Regulator |
The load must be removed from the alternator to read it's output. Remember
to use the ACV setting on your meter and the range should be in the
neighbourhood of 40VAC. I have never heard of insulation on an alternator
breaking down with heat of operation and restoring again once it has cooled
down. As I said I've never heard of it but I guess it is possible.
The rectifier/ regulator should maintain a 13.8V output. If that changes it
may be one of the components of the rectifier /regulator breaking down.
Make sure your case is in good contact with the ground and the cooling fins
are open to good air flow for cooling.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of ricklach
Sent: 28 May 2009 12:53 PM
Subject: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulator
I am having trouble with the 912 Rectifier/Regulator. It seems to work fine
at first start up and for the next 20 to 30 minutes. But some time after
start-up when the heat of summer soaks in the output start to go down to
what looks like battery voltage of around 11.9 to 12.2. After looking
everywhere and reading all the available manuals I find almost nothing about
how to check out the system. Can anyone help with some good trouble shooting
information like?
1. When checking out the engine alternator output do you disconnect the
two leads to check the voltage or just measure it at the
Rectifier/Regulator?
2. How do you check out the rectifier/regulator?
Any help would be greatly appreciated.
Rick
--------
Rick
N35 26.700, W118 16.743
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245707#245707
Message 5
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Hi Ira
"because there is no way in a stock engine to alter
the mixture"
Turn off fuel supply and it will lean
mixture, that will let you see if you are rich of peak.
Ron
Parigoris
Message 6
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Trouble shooting the Rotax Rectifer/Regulator |
Gentlemen:
All of a sudden I am seeing a lot of posts concerning trouble shooting the
Rotax voltage regulator. Also, a lot of comments that the Rotax regulator is
a piece of junk! I don't understand, I have the normal voltage regulator
that comes with the Rotax 912UL engine on my Allegro 2000 and have been
flying with it for three years. The only monitoring of voltage and current
that I have is a dual Voltage/Ampere meter on my panel as well as a red
warning light that will come on if I am drawing power from the battery
rather than the engine. Under normal operation the volt meter shows about 14
volts.
My basic question is how would I know if I was or was not having a problem
with the regulator with my set-up? Right now I am assuming that if that
little red light comes on the charging voltage from the engine to the
regulator and hence to the battery is less than the battery voltage and I am
drawing the battery down. If this would ever happen I would land immediately
and begin to find out what is causing the low voltage. Is there something I
am missing to alert me that my regulator may be going bad? After reading all
the posts about this subject I am a little confused.
Hugh McKay
Allegro 2000
Rotax 912UL
N661WW
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Noel
Sent: Thursday, May 28, 2009 6:46 PM
Subject: RE: RotaxEngines-List: Trouble shooting the Rotax
Rectifer/Regulator
The load must be removed from the alternator to read it's output. Remember
to use the ACV setting on your meter and the range should be in the
neighbourhood of 40VAC. I have never heard of insulation on an alternator
breaking down with heat of operation and restoring again once it has cooled
down. As I said I've never heard of it but I guess it is possible.
The rectifier/ regulator should maintain a 13.8V output. If that changes it
may be one of the components of the rectifier /regulator breaking down.
Make sure your case is in good contact with the ground and the cooling fins
are open to good air flow for cooling.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of ricklach
Sent: 28 May 2009 12:53 PM
Subject: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulator
I am having trouble with the 912 Rectifier/Regulator. It seems to work fine
at first start up and for the next 20 to 30 minutes. But some time after
start-up when the heat of summer soaks in the output start to go down to
what looks like battery voltage of around 11.9 to 12.2. After looking
everywhere and reading all the available manuals I find almost nothing about
how to check out the system. Can anyone help with some good trouble shooting
information like?
1. When checking out the engine alternator output do you disconnect the
two leads to check the voltage or just measure it at the
Rectifier/Regulator?
2. How do you check out the rectifier/regulator?
Any help would be greatly appreciated.
Rick
--------
Rick
N35 26.700, W118 16.743
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245707#245707
Checked by AVG - www.avg.com
08:10:00
Message 7
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Trouble shooting the Rotax Rectifier/Regulator |
Rick,
I am also checking out a 912 voltage problem similar to yours except my
voltage stays under 13V regardless of how long I run the engine or at what
RPM. You can see the thread of conversation on this subject by looking back
about a week in Aeroelectric-list.
The problem can be a with the coils in the engine, the wiring (unlikely) or
with the voltage regulator (which is known to be of marginal quality). Here
is what I checked before coming to the conclusion that the voltage regulator
was bad.
. Check the coils for shorts by reading the ohms between the two
wires coming from the engine (going to the "G" terminals on the voltage
regulator) with the engine off. The resistance should be about .7-ohms
(probably .5 to 1-ohm is OK). Also check that neither of these wires are
grounded.
. Check the AC voltage going from the engine to the "G" terminals
while the engine is running. Mine was as follows, which the guys at Lockwood
told me was just about right:
Idle (1900-RPM) was 12.8 volts
2500-RPM was 16.0 v
3000-RPM was 19.0 v
4000-RPM was 24.5 v
cruse(5000-RPM)was not measured because the plane would have started
rolling.
. If the two items above check out, and your wiring is solid, it's a
good bet the voltage regulator is bad. Lockwood sells a replacement for
about $170 but Bob Nuckolls suggests looking for a better quality
alternative to Rotax.
Rgds,
Les
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of ricklach
Sent: Thursday, May 28, 2009 8:23 AM
Subject: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulator
I am having trouble with the 912 Rectifier/Regulator. It seems to work fine
at first start up and for the next 20 to 30 minutes. But some time after
start-up when the heat of summer soaks in the output start to go down to
what looks like battery voltage of around 11.9 to 12.2. After looking
everywhere and reading all the available manuals I find almost nothing about
how to check out the system. Can anyone help with some good trouble shooting
information like?
1. When checking out the engine alternator output do you disconnect the
two leads to check the voltage or just measure it at the
Rectifier/Regulator?
2. How do you check out the rectifier/regulator?
Any help would be greatly appreciated.
Rick
--------
Rick
N35 26.700, W118 16.743
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245707#245707
Message 8
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Low oil temps on 912ULS |
I fly a Zenith CH701 with a 912 ULS engine and my oil temps are running low.
Rotax says the operating temps should be between 190 and 230-degrees F. My
normal temps with 60-degree outside air run about 130-degrees at about
4800-RPM. I only get in the "normal" range when running near full RPM, about
5250 with my prop setting. I mostly use 91 octane mogas and CPS's
semi-synthetic AV-9 motor oil (which is supposed to be designed especially
for the 912).
Should I be concerned that the oil temps run below the normal range?
Les
Message 9
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Trouble shooting the Rotax Rectifer/Regulator |
The alternator on your engine has a finite amount of current it can
generate. If you are using too much current the little red light may come
on. In that case ti is only telling you that you have too much "stuff"
drawing power. If however at the same time you notice the Voltmeter also
drops to around 11 V then you know your charging system has gone for a
holiday and it would be a good idea for you to head for terra firma.
If however you notice that the voltage heads north of 15V it would be a good
idea to pull the breaker on the charging circuit and again head for terra
firma.
If you are quick at noticing these things you can estimate how long your
battery will last before your radio and avionics go south. The best thing
to do with a low voltage and red light on is to shut off anything electric
that is not absolutely necessary to your flight. And continue your trip,
landing at a convenient air field. Remember if you are using large
quantities of current from the battery you may need a charge to get your
engine started again.
Spam cans have a slightly different type of alternator which has been
discussed. One interesting fact about their little red light is it is an
overvoltage light. It comes on if the regulator allows the voltage to go
above 15V. At that point a special device turns on the overvoltage light
and kicks the alternator offline to protect your avionics. The SOP is to
reset the alternator breaker once... if it goes overvoltage again leave it
off and find a convenient place to land.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Hugh
Sent: 28 May 2009 07:35 PM
Subject: RE: RotaxEngines-List: Trouble shooting the Rotax
Rectifer/Regulator
Gentlemen:
All of a sudden I am seeing a lot of posts concerning trouble shooting the
Rotax voltage regulator. Also, a lot of comments that the Rotax regulator is
a piece of junk! I don't understand, I have the normal voltage regulator
that comes with the Rotax 912UL engine on my Allegro 2000 and have been
flying with it for three years. The only monitoring of voltage and current
that I have is a dual Voltage/Ampere meter on my panel as well as a red
warning light that will come on if I am drawing power from the battery
rather than the engine. Under normal operation the volt meter shows about 14
volts.
My basic question is how would I know if I was or was not having a problem
with the regulator with my set-up? Right now I am assuming that if that
little red light comes on the charging voltage from the engine to the
regulator and hence to the battery is less than the battery voltage and I am
drawing the battery down. If this would ever happen I would land immediately
and begin to find out what is causing the low voltage. Is there something I
am missing to alert me that my regulator may be going bad? After reading all
the posts about this subject I am a little confused.
Hugh McKay
Allegro 2000
Rotax 912UL
N661WW
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Noel
Sent: Thursday, May 28, 2009 6:46 PM
Subject: RE: RotaxEngines-List: Trouble shooting the Rotax
Rectifer/Regulator
The load must be removed from the alternator to read it's output. Remember
to use the ACV setting on your meter and the range should be in the
neighbourhood of 40VAC. I have never heard of insulation on an alternator
breaking down with heat of operation and restoring again once it has cooled
down. As I said I've never heard of it but I guess it is possible.
The rectifier/ regulator should maintain a 13.8V output. If that changes it
may be one of the components of the rectifier /regulator breaking down.
Make sure your case is in good contact with the ground and the cooling fins
are open to good air flow for cooling.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of ricklach
Sent: 28 May 2009 12:53 PM
Subject: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulator
I am having trouble with the 912 Rectifier/Regulator. It seems to work fine
at first start up and for the next 20 to 30 minutes. But some time after
start-up when the heat of summer soaks in the output start to go down to
what looks like battery voltage of around 11.9 to 12.2. After looking
everywhere and reading all the available manuals I find almost nothing about
how to check out the system. Can anyone help with some good trouble shooting
information like?
1. When checking out the engine alternator output do you disconnect the
two leads to check the voltage or just measure it at the
Rectifier/Regulator?
2. How do you check out the rectifier/regulator?
Any help would be greatly appreciated.
Rick
--------
Rick
N35 26.700, W118 16.743
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245707#245707
Checked by AVG - www.avg.com
08:10:00
Message 10
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Trouble shooting the Rotax Rectifier/Regulator |
If your voltage is consistently 13V regardless of engine rpm the first thing
I would do is check the voltmeter in your panel is accurate.
Just a thought
Noel
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Les
Goldner
Sent: 28 May 2009 07:41 PM
Subject: RE: RotaxEngines-List: Trouble shooting the Rotax
Rectifier/Regulator
Rick,
I am also checking out a 912 voltage problem similar to yours except my
voltage stays under 13V regardless of how long I run the engine or at what
RPM. You can see the thread of conversation on this subject by looking back
about a week in Aeroelectric-list.
The problem can be a with the coils in the engine, the wiring (unlikely) or
with the voltage regulator (which is known to be of marginal quality). Here
is what I checked before coming to the conclusion that the voltage regulator
was bad.
. Check the coils for shorts by reading the ohms between the two
wires coming from the engine (going to the "G" terminals on the voltage
regulator) with the engine off. The resistance should be about .7-ohms
(probably .5 to 1-ohm is OK). Also check that neither of these wires are
grounded.
. Check the AC voltage going from the engine to the "G" terminals
while the engine is running. Mine was as follows, which the guys at Lockwood
told me was just about right:
Idle (1900-RPM) was 12.8 volts
2500-RPM was 16.0 v
3000-RPM was 19.0 v
4000-RPM was 24.5 v
cruse(5000-RPM)was not measured because the plane would have started
rolling.
. If the two items above check out, and your wiring is solid, it's a
good bet the voltage regulator is bad. Lockwood sells a replacement for
about $170 but Bob Nuckolls suggests looking for a better quality
alternative to Rotax.
Rgds,
Les
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of ricklach
Sent: Thursday, May 28, 2009 8:23 AM
Subject: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulator
I am having trouble with the 912 Rectifier/Regulator. It seems to work fine
at first start up and for the next 20 to 30 minutes. But some time after
start-up when the heat of summer soaks in the output start to go down to
what looks like battery voltage of around 11.9 to 12.2. After looking
everywhere and reading all the available manuals I find almost nothing about
how to check out the system. Can anyone help with some good trouble shooting
information like?
1. When checking out the engine alternator output do you disconnect the
two leads to check the voltage or just measure it at the
Rectifier/Regulator?
2. How do you check out the rectifier/regulator?
Any help would be greatly appreciated.
Rick
--------
Rick
N35 26.700, W118 16.743
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245707#245707
to browse
Un/Subscription,
Browse, Chat, FAQ,
more:
http://www.matronics.com/Navigator?RotaxEngines-List
Web Forums!
http://forums.matronics.com
support!
http://www.matronics.com/contribution
Message 11
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Low oil temps on 912ULS |
Hi Les,
It would be better if your CHT's ran a little higher. First I would set my prop
to achieve 5500 rpm. You need to get the temps up so you can burn impurities
off the oil and out of the system. The oil temp must be low, too. It is usually
around the CHT temp mark depending on how you set the oil and coolant coolers
up. You will have a better performing airplane in all aspects and save a little
fuel if you bump up your rpm. About 1.5 degrees flatter pitch if you are running
5200-5250 WOT straight and level. This will also help with temps and you
will develop more HP at a given rpm , plus you will get better all around flight
characteristics. Your engine was designed to run between 4800-5200 rpm with
the prop set to achieve 5500 engine rpm WOT. 5000 rpm is peak torque. After
5000 rpm torque starts to drop as HP continues to increase. 60 degrees is a
cool day. If you can't bring the temps up then place a piece of 2" wide aluminum
tape across the coolant radiator. This is an accepted practice by Rotax.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245797#245797
Message 12
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Low oil temps on 912ULS |
I had the same problem with my 912s so I bought an external oil thermostat
from Lockwood. The oil should be over 190 so that it works correctly in your
engine. I have used the thermostat for about 3 years now without any
trouble. My oil temp stays around 195.
Matt
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Les
Goldner
Sent: Thursday, May 28, 2009 6:31 PM
Subject: RotaxEngines-List: Low oil temps on 912ULS
<lgold@quantum-associates.com>
I fly a Zenith CH701 with a 912 ULS engine and my oil temps are running low.
Rotax says the operating temps should be between 190 and 230-degrees F. My
normal temps with 60-degree outside air run about 130-degrees at about
4800-RPM. I only get in the "normal" range when running near full RPM, about
5250 with my prop setting. I mostly use 91 octane mogas and CPS's
semi-synthetic AV-9 motor oil (which is supposed to be designed especially
for the 912).
Should I be concerned that the oil temps run below the normal range?
Les
Message 13
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Trouble shooting the Rotax Rectifer/Regulator |
On a Rotax 503 DCDI: If you're having low (and sometimes 0 ) voltage number
s between the rectifier and the engine (from the rectifier forward to the b
attery, all numbers are right on,) could that indicate a problem with the e
ngine lighting coils?
Also, what OHM reading should I be getting from the engine lighting coils?
Thanks for your help -
ArtySandy, Oregon
www.LessonsFromTheEdge.com/uladventure2009.htm
=0A
=0A"Life's a daring adventure or nothing"
=0A Helen Keller
=0A
=0A"I refuse to tip toe through life just to arrive safely at death."
--- On Thu, 5/28/09, Pete Christensen <apeterchristensen@sbcglobal.net> wro
te:
From: Pete Christensen <apeterchristensen@sbcglobal.net>
Subject: Re: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulat
or
sen@sbcglobal.net>
Been there, done that, replaced Rectifier/Regulator and that worked. http:/
/www.kitfoxaircraft.com/ has them at a good price.- I wasted a week tryin
g to troubleshoot.
Pete
----- Original Message ----- From: "ricklach" <rick@ravengear.us>
Sent: Thursday, May 28, 2009 9:22 AM
Subject: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulator
>
> I am having trouble with the 912 Rectifier/Regulator. It seems to work fi
ne at first start up and for the next 20 to 30 minutes. But some time after
start-up when the heat of summer soaks in the output start to go down to w
hat looks like battery voltage of around 11.9 to 12.2. After looking everyw
here and reading all the available manuals I find almost nothing about how
to check out the system. Can anyone help with some good trouble shooting in
formation like?
>
> 1. When checking out the engine alternator output do you disconnect the t
wo leads to check the voltage or just measure it at the Rectifier/Regulator
?
>
> 2. How do you check out the rectifier/regulator?
> Any help would be greatly appreciated.
>
> Rick
>
> --------
> Rick
> N35 26.700,- W118 16.743
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245707#245707
>
>
>
>
>
>
>
>
>
>
le, List Admin.
Message 14
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Trouble shooting the Rotax Rectifer/Regulator |
On 06:43 PM 5/28/2009, TheWanderingWench wrote:
>On a Rotax 503 DCDI: If you're having low (and sometimes 0 ) voltage numbers between
the rectifier and the engine (from the rectifier forward to the battery,
all numbers are right on,) could that indicate a problem with the engine lighting
coils?
>
>Also, what OHM reading should I be getting from the engine lighting coils?
http://www.theultralightplace.com/electrical.htm
--
Bob Comperini
e-mail: bob@fly-ul.com
WWW: http://www.fly-ul.com
Message 15
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Trouble shooting the Rotax Rectifer/Regulator |
One of the responses I think said around .7 Ohm. Most Ohm meters will not
read that small a resistance accurately. Generally coils can only really be
tested for continuity with an Ohm meter. To do a proper test you need an AC
source for the meter similar to the buzz box used to set points on the old
ignition coils. With the AC, a good coil will develop a high impedance
which is easy to meter. Any short in the coil will result in a low
impedance and also will be picked up by the meter.
Noel
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of
TheWanderingWench
Sent: 28 May 2009 11:13 PM
Subject: Re: RotaxEngines-List: Trouble shooting the Rotax
Rectifer/Regulator
On a Rotax 503 DCDI: If you're having low (and sometimes 0 ) voltage numbers
between the rectifier and the engine (from the rectifier forward to the
battery, all numbers are right on,) could that indicate a problem with the
engine lighting coils?
Also, what OHM reading should I be getting from the engine lighting coils?
Thanks for your help -
Arty
Sandy, Oregon
www.LessonsFromTheEdge.com/uladventure2009.htm
"Life's a daring adventure or nothing"
Helen Keller
"I refuse to tip toe through life just to arrive safely at death."
--- On Thu, 5/28/09, Pete Christensen <apeterchristensen@sbcglobal.net>
wrote:
From: Pete Christensen <apeterchristensen@sbcglobal.net>
Subject: Re: RotaxEngines-List: Trouble shooting the Rotax
Rectifer/Regulator
<apeterchristensen@sbcglobal.net>
Been there, done that, replaced Rectifier/Regulator and that worked.
http://www.kitfoxaircraft.com/ has them at a good price. I wasted a week
trying to troubleshoot.
Pete
----- Original Message ----- From: "ricklach" <rick@ravengear.us>
Sent: Thursday, May 28, 2009 9:22 AM
Subject: RotaxEngines-List: Trouble shooting the Rotax Rectifer/Regulator
>
> I am having trouble with the 912 Rectifier/Regulator. It seems to work
fine at first start up and for the next 20 to 30 minutes. But some time
after start-up when the heat of summer soaks in the output start to go down
to what looks like battery voltage of around 11.9 to 12.2. After looking
everywhere and reading all the available manuals I find almost nothing about
how to check out the system. Can anyone help with some good trouble shooting
information like?
>
> 1. When checking out the engine alternator output do you disconnect the
two leads to check the voltage or just measure it at the
Rectifier/Regulator?
>
> 2. How do you check out the rectifier/regulator?
> Any help would be greatly appreciated.
>
> Rick
>
> --------
> Rick
> N35 26.700, W118 16.743
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245707#245707
>
>
>
>
>
>
> http://www.matronics.com/Navigator? http://forums.maref
<http://forums.matronics.com> "http://www.matronics.com/contribution"
======
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|