 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
johnbright
Joined: 14 Dec 2011
Posts: 165
Location: Newport News, VA
|
 Posted: Sat Oct 03, 2020 8:11 pm Post subject: field current supplied from B lead instead of from main bus |
 |
|
Hi Bob,
Someone in my sphere suggested getting field current from the B lead instead of from the main bus.
This way if the B lead shorts to ground and the fuselink opens, the field will be de-energized.
Marked up snip of Z101B attached.
Comments?
Thanks
| | - 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 |
|
| Description: |
|
| Filesize: |
225.42 KB |
| Viewed: |
1497 Time(s) |
|
_________________
John Bright, RV-6A, at FWF, O-360
Z-101 single batt dual alt SDS EM-5-F.
john_s_bright@yahoo.com, Newport News, Va
N1921R links |
|
| Back to top |
|
 |
user9253
Joined: 28 Mar 2008
Posts: 1924
Location: Riley TWP Michigan
|
| Posted: Sun Oct 04, 2020 11:07 am Post subject: Re: field current supplied from B lead instead of from main |
|
|
Bad idea. How often do "B" leads short to ground?
The "B" lead is not going to short to ground if properly installed.
Adding an extra wire from the alternator to the instrument panel increases the chances of a failure.
Suppose the alternator stops working for some reason.
It could be a broken belt, bad brushes, broken wire, blown "B" lead fuse.
The pilot will not know the cause. What action will the pilot take?
She might cycle the alternator field switch on and off. If the alternator still does
not work, she might leave the switch off to conserve the battery.
I see no advantage to adding an extra wire to the engine.
| | - 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 |
|
_________________
Joe Gores |
|
| 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
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
