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7suds(at)Chartermi.net
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 Posted: Tue Nov 15, 2011 5:27 pm Post subject: Pre flight Problem |
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Guys,
Getting ready for my maiden voyage and am having a problem with charging. My
amp meter shows a negative draw and the volt meter shows 12 volts, as I turn
things on the amp draw goes more negative. All indications are that the
system is not charging, I am running a Kuntzleman Hotbox. Pretty sure all is
wired correct. Any suggestions where to start? Can I check the AC output of
the charging coils? Any chance that the voltage regulator would be the
culprit?
Also on a side note, is anyone monitoring their cooling water temp other
than as CHT? If so where do you have the probe and what are you seeing for
water temp?
Thanks,
Lloyd C
5 Outback 912ul IVO IFA
Northern Mi.
Final Prep for Maiden Voyage
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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brubakermal(at)yahoo.com
Guest
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| Posted: Wed Nov 16, 2011 6:02 pm Post subject: Pre flight Problem |
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good luck man good luck
Malcolm & Jeanne Brubaker
Michigan Sport Pilot Repair
LSRM-A, PPC, WS
Great Sails - Sailmaker
for Ultralight & Light Sport
(989)513-3022
From: Lloyd & Lorrie Cudnohufsky <7suds(at)Chartermi.net>
To: kitfox-list(at)matronics.com
Sent: Tuesday, November 15, 2011 8:25 PM
Subject: Pre flight Problem
--> Kitfox-List message posted by: "Lloyd & Lorrie Cudnohufsky" <7suds(at)chartermi.net (7suds(at)chartermi.net)>
Guys,
Getting ready for my maiden voyage and am having a problem with charging. My
amp meter shows a negative draw and the volt meter shows 12 volts, as I turn
things on the amp draw goes more negative. All indications are that the
system is not charging, I am running a Kuntzleman Hotbox. Pretty sure all is
wired correct. Any suggestions where to start? Can I check the AC output of
the charging coils? Any chance that the voltage regulator would be the
culprit?
Also on a side note, is anyone monitoring their cooling water temp other
than as CHT? If so where do you have the probe and what are you seeing for
water temp?
Thanks,
Lloyd C
5 Outback 912ul IVO IFA
Northern Mi.
Final Prep for Maidbsp; * AeroElectric www.buildersbookssp; -Matt Dralle, Lbsp; -Matt --> h=
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
|
| Posted: Fri Nov 18, 2011 9:59 am Post subject: Pre flight Problem |
|
|
You can test the output of your alternator with an AC voltmeter. Output should be well over 16V at cruise RPM. Generally there are two things that can go wrong with an alternator.
One is the brushes wear out. If this happens you will observe a short period of time where the system charges, doesn’t charge, charges etc. In other words charges intermittently.
Another thing that can generally go wrong with the alternator is the field coil can burn open. No field produced by the field coil no output from the alternator. Related to this is bushings on the alternator can wear enough to allow the field coil to short against the interior of the housing.... Same effect as above. Note the Rotax 582 engines don’t have a field coil. They have a dirt big magnet instead so they use a system of shunting excess power to ground. This means if your stator coils ring out true the problem is probably in your regulator/rectifier.
This is where I have noticed most of the problems come from. The rectifier regulator generally requires a good ground through the back of its case. First thing to do is remove the rectifier/regulator, clean its back and the space it will occupy on the firewall and reinstall it. The next thing to do is to locate the braid that goes from the engine to the frame of the plane. Make sure the connections on both ends of this braid are shiny clean too.
There is a small chance that your rectifier/regulator has gone on strike. You can get it checked out at any automotive shop that specializes in starter motors, etc.
Hope this helps
Noel
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Malcolm Brubaker
Sent: November 16, 2011 10:30 PM
To: kitfox-list(at)matronics.com
Subject: Re: Pre flight Problem
good luck man good luck
Malcolm & Jeanne Brubaker
Michigan Sport Pilot Repair
LSRM-A, PPC, WS
Great Sails - Sailmaker
for Ultralight & Light Sport
(989)513-3022
From: Lloyd & Lorrie Cudnohufsky <7suds(at)Chartermi.net>
To: kitfox-list(at)matronics.com
Sent: Tuesday, November 15, 2011 8:25 PM
Subject: Pre flight Problem
--> Kitfox-List message posted by: "Lloyd & Lorrie Cudnohufsky" <7suds(at)chartermi.net (7suds(at)chartermi.net)>
Guys,
Getting ready for my maiden voyage and am having a problem with charging. My
amp meter shows a negative draw and the volt meter shows 12 volts, as I turn
things on the amp draw goes more negative. All indications are that the
system is not charging, I am running a Kuntzleman Hotbox. Pretty sure all is
wired correct. Any suggestions where to start? Can I check the AC output of
the charging coils? Any chance that the voltage regulator would be the
culprit?
Also on a side note, is anyone monitoring their cooling water temp other
than as CHT? If so where do you have the probe and what are you seeing for
water temp?
Thanks,
Lloyd C
5 Outback 912ul IVO IFA
Northern Mi.
Final Prep for Maidbsp; * AeroElectric www.buildersbookssp; -Matt Dralle, Lbsp; -Matt --> h=
| Quote: | | [/url][url=http://www.matronics.com/contribution][b][u][/url][url=http://www.matronics.com/contribution][b][u][/url][url=http://www.matronics.com/contribution][/url][url=http://www.matronics.com/contribution] |
01234567890 | Quote: | | [url=http://www.matronics.com/contribution] |
12 | Quote: | | [url=http://www.matronics.com/contribution] |
34 | Quote: | | [url=http://www.matronics.com/contribution] |
56 | Quote: | | [url=http://www.matronics.com/contribution] |
78 | Quote: | | [url=http://www.matronics.com/contribution] |
9012
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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peteohms
Joined: 31 Oct 2007
Posts: 224
Location: Leander, TX
|
| Posted: Fri Nov 18, 2011 2:58 pm Post subject: Pre flight Problem |
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|
Sorry Noel! Make that a Large Chance that the rectifier/regulator has gone on strike.
Pete
Leander, TX
Kitfox III, 912
On 11/18/2011 11:56 AM, Noel Loveys wrote: [quote] <![endif]--> <![endif]-->
You can test the output of your alternator with an AC voltmeter. Output should be well over 16V at cruise RPM. Generally there are two things that can go wrong with an alternator.
One is the brushes wear out. If this happens you will observe a short period of time where the system charges, doesn’t charge, charges etc. In other words charges intermittently.
Another thing that can generally go wrong with the alternator is the field coil can burn open. No field produced by the field coil no output from the alternator. Related to this is bushings on the alternator can wear enough to allow the field coil to short against the interior of the housing.... Same effect as above. Note the Rotax 582 engines don’t have a field coil. They have a dirt big magnet instead so they use a system of shunting excess power to ground. This means if your stator coils ring out true the problem is probably in your regulator/rectifier.
This is where I have noticed most of the problems come from. The rectifier regulator generally requires a good ground through the back of its case. First thing to do is remove the rectifier/regulator, clean its back and the space it will occupy on the firewall and reinstall it. The next thing to do is to locate the braid that goes from the engine to the frame of the plane. Make sure the connections on both ends of this braid are shiny clean too.
There is a small chance that your rectifier/regulator has gone on strike. You can get it checked out at any automotive shop that specializes in starter motors, etc.
Hope this helps
Noel
--> Kitfox-List message posted by: "Lloyd & Lorrie Cudnohufsky" <7suds(at)chartermi.net (7suds(at)chartermi.net)>
Guys,
Getting ready for my maiden voyage and am having a problem with charging. My
amp meter shows a negative draw and the volt meter shows 12 volts, as I turn
things on the amp draw goes more negative. All indications are that the
system is not charging, I am running a Kuntzleman Hotbox. Pretty sure all is
wired correct. Any suggestions where to start? Can I check the AC output of
the charging coils? Any chance that the voltage regulator would be the
culprit?
Also on a side note, is anyone monitoring their cooling water temp other
than as CHT? If so where do you have the probe and what are you seeing for
water temp?
Thanks,
Lloyd C
5 Outback 912ul IVO IFA
Northern Mi.
[b][u] [/b][/u][/b][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
_________________
Pete
Leander, TX
Kitfox III, 912ul, Grove |
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| Back to top |
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7suds(at)Chartermi.net
Guest
|
| Posted: Sat Nov 19, 2011 5:24 pm Post subject: Pre flight Problem |
|
|
Noel, Pete,
Thanks for the replies, I have been retracing wiring and checking ground continuity since the weather here has kept me from getting the plane out of the hanger and starting it. Some of the wiring I did and some was from the original build and during my reviewing / testing I noticed that the red lead from the Kuntzelman hotbox that goes to the (R,+B,C) terminals on the Regulator also had a tap that went to a breaker on the instrument panel that feeds all the other breakers, not sure if I did this or if it was like that from the original build, either way I endorsed it because it is still there. Not sure if this would cause the regulator to fry, even if not I’m not sure I like the arrangement since all the DC power to the panel would not be filtered through the hotbox. Weather is supposed to get a little more tolerable here next week, I think I will take you advise and see if there is a place that can test the regulator / rectifier for me before I continue with starting the engine and testing for the AC.
Thank you very much for the replies,
Lloyd
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Pete Christensen
Sent: Friday, November 18, 2011 4:56 PM
To: kitfox-list(at)matronics.com
Subject: Re: Pre flight Problem
Sorry Noel! Make that a Large Chance that the rectifier/regulator has gone on strike.
Pete
Leander, TX
Kitfox III, 912
On 11/18/2011 11:56 AM, Noel Loveys wrote:
You can test the output of your alternator with an AC voltmeter. Output should be well over 16V at cruise RPM. Generally there are two things that can go wrong with an alternator.
One is the brushes wear out. If this happens you will observe a short period of time where the system charges, doesn’t charge, charges etc. In other words charges intermittently.
Another thing that can generally go wrong with the alternator is the field coil can burn open. No field produced by the field coil no output from the alternator. Related to this is bushings on the alternator can wear enough to allow the field coil to short against the interior of the housing.... Same effect as above. Note the Rotax 582 engines don’t have a field coil. They have a dirt big magnet instead so they use a system of shunting excess power to ground. This means if your stator coils ring out true the problem is probably in your regulator/rectifier.
This is where I have noticed most of the problems come from. The rectifier regulator generally requires a good ground through the back of its case. First thing to do is remove the rectifier/regulator, clean its back and the space it will occupy on the firewall and reinstall it. The next thing to do is to locate the braid that goes from the engine to the frame of the plane. Make sure the connections on both ends of this braid are shiny clean too.
There is a small chance that your rectifier/regulator has gone on strike. You can get it checked out at any automotive shop that specializes in starter motors, etc.
Hope this helps
Noel
--> Kitfox-List message posted by: "Lloyd & Lorrie Cudnohufsky" <7suds(at)chartermi.net (7suds(at)chartermi.net)>
Guys,
Getting ready for my maiden voyage and am having a problem with charging. My
amp meter shows a negative draw and the volt meter shows 12 volts, as I turn
things on the amp draw goes more negative. All indications are that the
system is not charging, I am running a Kuntzleman Hotbox. Pretty sure all is
wired correct. Any suggestions where to start? Can I check the AC output of
the charging coils? Any chance that the voltage regulator would be the
culprit?
Also on a side note, is anyone monitoring their cooling water temp other
than as CHT? If so where do you have the probe and what are you seeing for
water temp?
Thanks,
Lloyd C
5 Outback 912ul IVO IFA
Northern Mi.
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
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|
peteohms
Joined: 31 Oct 2007
Posts: 224
Location: Leander, TX
|
| Posted: Sun Nov 20, 2011 9:35 am Post subject: Pre flight Problem |
|
|
Lloyd,
I went through what you are going through 3 years ago. After a couple weeks of trying to troubleshoot the problem,I broke down and bought a new reg/rectifier.
I mounted it in an aluminum heatsink, jumped in my plane and went flying. No more problems.
Pete
Leander, TX
Kitfox III Sn 1000
912
Sent from my iPad
On Nov 19, 2011, at 7:22 PM, "Lloyd & Lorrie Cudnohufsky" <7suds(at)Chartermi.net (7suds(at)Chartermi.net)> wrote:
[quote]
Noel, Pete,
Thanks for the replies, I have been retracing wiring and checking ground continuity since the weather here has kept me from getting the plane out of the hanger and starting it. Some of the wiring I did and some was from the original build and during my reviewing / testing I noticed that the red lead from the Kuntzelman hotbox that goes to the (R,+B,C) terminals on the Regulator also had a tap that went to a breaker on the instrument panel that feeds all the other breakers, not sure if I did this or if it was like that from the original build, either way I endorsed it because it is still there. Not sure if this would cause the regulator to fry, even if not I’m not sure I like the arrangement since all the DC power to the panel would not be filtered through the hotbox. Weather is supposed to get a little more tolerable here next week, I think I will take you advise and see if there is a place that can test the regulator / rectifier for me before I continue with starting the engine and testing for the AC.
Thank you very much for the replies,
Lloyd
From: owner-kitfox-list-server(at)matronics.com (owner-kitfox-list-server(at)matronics.com) [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Pete Christensen
Sent: Friday, November 18, 2011 4:56 PM
To: [url=mailto:kitfox-list(at)matronics.com]kitfox-list(at)matronics.com (kitfox-list(at)matronics.com)[/url]
Subject: Re: Pre flight Problem
Sorry Noel! Make that a Large Chance that the rectifier/regulator has gone on strike.
Pete
Leander, TX
Kitfox III, 912
On 11/18/2011 11:56 AM, Noel Loveys wrote:
You can test the output of your alternator with an AC voltmeter. Output should be well over 16V at cruise RPM. Generally there are two things that can go wrong with an alternator.
One is the brushes wear out. If this happens you will observe a short period of time where the system charges, doesn’t charge, charges etc. In other words charges intermittently.
Another thing that can generally go wrong with the alternator is the field coil can burn open. No field produced by the field coil no output from the alternator. Related to this is bushings on the alternator can wear enough to allow the field coil to short against the interior of the housing.... Same effect as above. Note the Rotax 582 engines don’t have a field coil. They have a dirt big magnet instead so they use a system of shunting excess power to ground. This means if your stator coils ring out true the problem is probably in your regulator/rectifier.
This is where I have noticed most of the problems come from. The rectifier regulator generally requires a good ground through the back of its case. First thing to do is remove the rectifier/regulator, clean its back and the space it will occupy on the firewall and reinstall it. The next thing to do is to locate the braid that goes from the engine to the frame of the plane. Make sure the connections on both ends of this braid are shiny clean too.
There is a small chance that your rectifier/regulator has gone on strike. You can get it checked out at any automotive shop that specializes in starter motors, etc.
Hope this helps
Noel
--> Kitfox-List message posted by: "Lloyd & Lorrie Cudnohufsky" <[url=mailto:7suds(at)chartermi.net]7suds(at)chartermi.net (7suds(at)chartermi.net)[/url]>
Guys,
Getting ready for my maiden voyage and am having a problem with charging. My
amp meter shows a negative draw and the volt meter shows 12 volts, as I turn
things on the amp draw goes more negative. All indications are that the
system is not charging, I am running a Kuntzleman Hotbox. Pretty sure all is
wired correct. Any suggestions where to start? Can I check the AC output of
the charging coils? Any chance that the voltage regulator would be the
culprit?
Also on a side note, is anyone monitoring their cooling water temp other
than as CHT? If so where do you have the probe and what are you seeing for
water temp?
Thanks,
Lloyd C
5 Outback 912ul IVO IFA
Northern Mi.
[b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
_________________
Pete
Leander, TX
Kitfox III, 912ul, Grove |
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7suds(at)Chartermi.net
Guest
|
| Posted: Sun Nov 20, 2011 6:38 pm Post subject: Pre flight Problem |
|
|
Pete,
That thought has always been in the back of my head and I have been researching where I can get a replacement regulator rectifier in case it comes to that, I have seen postings by some 912 owners who have not had great luck with the Ducati regulator rectifiers and have suggested the use of a John Deere  AM101406, any thoughts on alternatives to the Ducati? Used a Keywest on my Model 4 that was running a Rotax 503, ever hear of anyone using one on a 912?
Lloyd
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Pete Christensen
Sent: Sunday, November 20, 2011 11:33 AM
To: kitfox-list(at)matronics.com
Subject: Re: Pre flight Problem
Lloyd,
I went through what you are going through 3 years ago. After a couple weeks of trying to troubleshoot the problem,I broke down and bought a new reg/rectifier.
I mounted it in an aluminum heatsink, jumped in my plane and went flying. No more problems.
Pete
Leander, TX
Kitfox III Sn 1000
912
Sent from my iPad
On Nov 19, 2011, at 7:22 PM, "Lloyd & Lorrie Cudnohufsky" <7suds(at)Chartermi.net (7suds(at)Chartermi.net)> wrote:
| Quote: |
Noel, Pete,
Thanks for the replies, I have been retracing wiring and checking ground continuity since the weather here has kept me from getting the plane out of the hanger and starting it. Some of the wiring I did and some was from the original build and during my reviewing / testing I noticed that the red lead from the Kuntzelman hotbox that goes to the (R,+B,C) terminals on the Regulator also had a tap that went to a breaker on the instrument panel that feeds all the other breakers, not sure if I did this or if it was like that from the original build, either way I endorsed it because it is still there. Not sure if this would cause the regulator to fry, even if not I’m not sure I like the arrangement since all the DC power to the panel would not be filtered through the hotbox. Weather is supposed to get a little more tolerable here next week, I think I will take you advise and see if there is a place that can test the regulator / rectifier for me before I continue with starting the engine and testing for the AC.
Thank you very much for the replies,
Lloyd
From: owner-kitfox-list-server(at)matronics.com (owner-kitfox-list-server(at)matronics.com) [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Pete Christensen
Sent: Friday, November 18, 2011 4:56 PM
To: kitfox-list(at)matronics.com (kitfox-list(at)matronics.com)
Subject: Re: Pre flight Problem
Sorry Noel! Make that a Large Chance that the rectifier/regulator has gone on strike.
Pete
Leander, TX
Kitfox III, 912
On 11/18/2011 11:56 AM, Noel Loveys wrote:
You can test the output of your alternator with an AC voltmeter. Output should be well over 16V at cruise RPM. Generally there are two things that can go wrong with an alternator.
One is the brushes wear out. If this happens you will observe a short period of time where the system charges, doesn’t charge, charges etc. In other words charges intermittently.
Another thing that can generally go wrong with the alternator is the field coil can burn open. No field produced by the field coil no output from the alternator. Related to this is bushings on the alternator can wear enough to allow the field coil to short against the interior of the housing.... Same effect as above. Note the Rotax 582 engines don’t have a field coil. They have a dirt big magnet instead so they use a system of shunting excess power to ground. This means if your stator coils ring out true the problem is probably in your regulator/rectifier.
This is where I have noticed most of the problems come from. The rectifier regulator generally requires a good ground through the back of its case. First thing to do is remove the rectifier/regulator, clean its back and the space it will occupy on the firewall and reinstall it. The next thing to do is to locate the braid that goes from the engine to the frame of the plane. Make sure the connections on both ends of this braid are shiny clean too.
There is a small chance that your rectifier/regulator has gone on strike. You can get it checked out at any automotive shop that specializes in starter motors, etc.
Hope this helps
Noel
--> Kitfox-List message posted by: "Lloyd & Lorrie Cudnohufsky" <7suds(at)chartermi.net (7suds(at)chartermi.net)>
Guys,
Getting ready for my maiden voyage and am having a problem with charging. My
amp meter shows a negative draw and the volt meter shows 12 volts, as I turn
things on the amp draw goes more negative. All indications are that the
system is not charging, I am running a Kuntzleman Hotbox. Pretty sure all is
wired correct. Any suggestions where to start? Can I check the AC output of
the charging coils? Any chance that the voltage regulator would be the
culprit?
Also on a side note, is anyone monitoring their cooling water temp other
than as CHT? If so where do you have the probe and what are you seeing for
water temp?
Thanks,
Lloyd C
5 Outback 912ul IVO IFA
Northern Mi.
[/url] | Quote: | | [url=http://www.matronics.com/contribution] |
012345678
|
901234567890123456789012345678901
[quote][b]
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peteohms
Joined: 31 Oct 2007
Posts: 224
Location: Leander, TX
|
| Posted: Mon Nov 21, 2011 9:33 am Post subject: Pre flight Problem |
|
|
LLoyd,
I followed your same path 3 years ago. I could not find enough information on Ducati, John Deere, or any other regulator. Just bite the bullet and get the one from Rotax. I would love to see a reasonable alternative, but would rather just fly my Kitfox.
Pete
On 11/20/2011 8:35 PM, Lloyd & Lorrie Cudnohufsky wrote: [quote] <![endif]--> <![endif]-->
Pete,
That thought has always been in the back of my head and I have been researching where I can get a replacement regulator rectifier in case it comes to that, I have seen postings by some 912 owners who have not had great luck with the Ducati regulator rectifiers and have suggested the use of a John Deere  AM101406, any thoughts on alternatives to the Ducati? Used a Keywest on my Model 4 that was running a Rotax 503, ever hear of anyone using one on a 912?
Â
Lloyd
Â
From: owner-kitfox-list-server(at)matronics.com (owner-kitfox-list-server(at)matronics.com) [mailto:owner-kitfox-list-server(at)matronics.com (owner-kitfox-list-server(at)matronics.com)] On Behalf Of Pete Christensen
Sent: Sunday, November 20, 2011 11:33 AM
To: kitfox-list(at)matronics.com (kitfox-list(at)matronics.com)
Subject: Re: Pre flight Problem
Â
Lloyd,
Â
I went through what you are going through 3 years ago. After a couple weeks of trying to troubleshoot the problem,I broke down and bought a new reg/rectifier.Â
I mounted it in an aluminum heatsink, jumped in my plane and went flying. Â No more problems.
Â
Pete
Leander, TX
Kitfox III Sn 1000
912
Sent from my iPad
On Nov 19, 2011, at 7:22 PM, "Lloyd & Lorrie Cudnohufsky" <7suds(at)Chartermi.net (7suds(at)Chartermi.net)> wrote:
| Quote: |
Noel, Pete,
Thanks for the replies, I have been retracing wiring and checking ground continuity since the weather here has kept me from getting the plane out of the hanger and starting it. Some of the wiring I did and some was from the original build and during my reviewing / testing I noticed that the red lead from the Kuntzelman hotbox that goes to the (R,+B,C) terminals on the Regulator also had a tap that went to a breaker on the instrument panel that feeds all the other breakers, not sure if I did this or if it was like that from the original build, either way I endorsed it because it is still there. Not sure if this would cause the regulator to fry, even if not I’m not sure I like the arrangement since all the DC power to the panel would not be filtered through the hotbox. Weather is supposed to get a little more tolerable here next week, I think I will take you advise and see if there is a place that can test the regulator / rectifier for me before I continue with starting the engine and testing for the AC.
Â
Thank you very much for the replies,
Lloyd
Â
From: owner-kitfox-list-server(at)matronics.com (owner-kitfox-list-server(at)matronics.com) [mailto:owner-kitfox-list-server(at)matronics.com (owner-kitfox-list-server(at)matronics.com)] On Behalf Of Pete Christensen
Sent: Friday, November 18, 2011 4:56 PM
To: kitfox-list(at)matronics.com (kitfox-list(at)matronics.com)
Subject: Re: Pre flight Problem
Â
Sorry Noel! Make that a Large Chance that the rectifier/regulator has gone on strike.Â
Pete
Leander, TX
Kitfox III, 912
On 11/18/2011 11:56 AM, Noel Loveys wrote:
You can test the output of your alternator with an AC voltmeter. Output should be well over 16V at cruise RPM. Generally there are two things that can go wrong with an alternator.Â
One is the brushes wear out. If this happens you will observe a short period of time where the system charges, doesn’t charge, charges etc. In other words charges intermittently.
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Another thing that can generally go wrong with the alternator is the field coil can burn open. No field produced by the field coil no output from the alternator. Related to this is bushings on the alternator can wear enough to allow the field coil to short against the interior of the housing.... Same effect as above. Note the Rotax 582 engines don’t have a field coil. They have a dirt big magnet instead so they use a system of shunting excess power to ground. This means if your stator coils ring out true the problem is probably in your regulator/rectifier.
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This is where I have noticed most of the problems come from. The rectifier regulator generally requires a good ground through the back of its case. First thing to do is remove the rectifier/regulator, clean its back and the space it will occupy on the firewall and reinstall it. The next thing to do is to locate the braid that goes from the engine to the frame of the plane. Make sure the connections on both ends of this braid are shiny clean too.
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There is a small chance that your rectifier/regulator has gone on strike. You can get it checked out at any automotive shop that specializes in starter motors, etc.
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Hope this helps
Â
Noel
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--> Kitfox-List message posted by: "Lloyd & Lorrie Cudnohufsky" <7suds(at)chartermi.net (7suds(at)chartermi.net)>
Guys,
Getting ready for my maiden voyage and am having a problem with charging. My
amp meter shows a negative draw and the volt meter shows 12 volts, as I turn
things on the amp draw goes more negative. All indications are that the
system is not charging, I am running a Kuntzleman Hotbox. Pretty sure all is
wired correct. Any suggestions where to start? Can I check the AC output of
the charging coils? Any chance that the voltage regulator would be the
culprit?
Also on a side note, is anyone monitoring their cooling water temp other
than as CHT? If so where do you have the probe and what are you seeing for
water temp?
Thanks,
Lloyd C
5 Outback 912ul IVO IFA
Northern Mi.
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Pete
Leander, TX
Kitfox III, 912ul, Grove |
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