|
Matronics Email Lists Web Forum Interface to the Matronics Email Lists
|
View previous topic :: View next topic |
Author |
Message |
rv-9a-online(at)telus.net Guest
|
Posted: Sun Apr 09, 2006 8:53 pm Post subject: Overvoltage, faulty switch |
|
|
Since my first flight of my RV-9A in January, I've been plagued with
over-voltage alarms.
I've been through the alternator field circuit several times, re-seating
fast-on terminals. This always seemed to fix the problem for several
operating hours.
On Friday, I was flying over the mountains when I had an alarm again, so
I shut the alternator off and began an in-flight diagnostic.
On the ground, my inspection revealed that I have a bad S700-2-10 switch
(my Master Switch).
All of the fast-on terminals are riveted in place on this particular
switch, and the rivets were quite loose, making the connections
intermittent and resistive.
My short term fix in flight was to wiggle the terminals by reaching
under the panel with my fingers.
I've contacted B&C for a replacement, and I've offered to send the bad
one back to them for analysis.
Has anyone else seen this problem?
Vern Little
| - The Matronics AeroElectric-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?AeroElectric-List |
|
|
|
Back to top |
|
|
nuckollsr(at)cox.net Guest
|
Posted: Mon Apr 10, 2006 7:24 am Post subject: Overvoltage, faulty switch |
|
|
At 09:46 PM 4/9/2006 -0700, you wrote:
Quote: |
Since my first flight of my RV-9A in January, I've been plagued with
over-voltage alarms.
I've been through the alternator field circuit several times, re-seating
fast-on terminals. This always seemed to fix the problem for several
operating hours.
On Friday, I was flying over the mountains when I had an alarm again, so
I shut the alternator off and began an in-flight diagnostic.
On the ground, my inspection revealed that I have a bad S700-2-10 switch
(my Master Switch).
All of the fast-on terminals are riveted in place on this particular
switch, and the rivets were quite loose, making the connections
intermittent and resistive.
My short term fix in flight was to wiggle the terminals by reaching
under the panel with my fingers.
I've contacted B&C for a replacement, and I've offered to send the bad
one back to them for analysis.
Has anyone else seen this problem?
|
Lots of people have had this and similar problems. See:
http://aeroelectric.com/articles/Anatomy_of_a_Switch_Failure/Anatomy_of_a_Switch_Failure.html
Bob . . .
| - The Matronics AeroElectric-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?AeroElectric-List |
|
|
|
Back to top |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|