Today's Message Index:
----------------------
1. 05:12 AM - Over-voltage relay (Kelley Monroe)
2. 12:06 PM - Re: Over-voltage relay (Craig Winkelmann)
3. 02:22 PM - Re: Re: Over-voltage relay (jblake207@COMCAST.NET)
4. 08:19 PM - Fw: FW: funny email (Russ)
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: | Over-voltage relay |
I have a CJ with a Delco 24V, 40A, alternator with integral voltage
regulator on it. The system doesn't have any over voltage protection.
Does anyone have an idea of what relay I should install? Thanks Kelley
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 |
|
| Subject: | Re: Over-voltage relay |
It is not that simple......I am sure if you look in the list archive, you will
find Mark Bitterlich has done some very nice posts on the value of and design
of a crowbar overvoltage protection circuit. Basically, you need a circuit that
detects the overvoltage at a certain setpoint and opens the field to the alternator
and keeps it open. No field voltage, no voltage out of the alternator.
Here is a useful link:
http://www.gatm.com/flying/electrical/phase_iv.html
Another option is to scrap the system you have and install a B&C system (system
means, alternator, voltage regulator/protection, proper pinion gear, proper mounting
plate for the alternator) that provides all the protection you may want
or need. As you read in the above link, B&C has incorporated many safety features
in their design. They also include a shear coupler between the engine
drive gear and the alternator. In the case of an alternator bearing failure,
the shear coupler fails instead of the pinion gear inside your engine.
Happy flying,
Craig W.
Craig W
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=276017#276017
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: Over-voltage relay |
Why would this system=C2-be any different than an over volt system on Ces
snas, Mooneys, Pipers, etc?
----- Original Message -----
From: "Craig Winkelmann" <capav8r@gmail.com>
Sent: Thursday, December 3, 2009 2:05:00 PM GMT -06:00 Central America
Subject: Yak-List: Re: Over-voltage relay
It is not that simple......I am sure if you look in the list archive, you w
ill find Mark Bitterlich has done some very nice posts on the value of and
design of a crowbar overvoltage protection circuit. =C2-Basically, you ne
ed a circuit that detects the overvoltage at a certain setpoint and opens t
he field to the alternator and keeps it open. =C2-No field voltage, no vo
ltage out of the alternator.
Here is a useful link:
http://www.gatm.com/flying/electrical/phase_iv.html
Another option is to scrap the system you have and install a B&C system (sy
stem means, alternator, voltage regulator/protection, proper pinion gear, p
roper mounting plate for the alternator) that provides all the protection y
ou may want or need. =C2-As you read in the above link, B&C has incorpora
ted many safety features in their design. =C2-They also include a shear c
oupler between the engine drive gear and the alternator. =C2-In the case
of an alternator bearing failure, the shear coupler fails instead of the pi
nion gear inside your engine.
Happy flying,
Craig W.
Craig W
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=276017#276017
===========
=C2- =C2- =C2- =C2- =C2--Matt Dralle, List Admin.
===========
===========
MS -
===========
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: | Fw: FW: funny email |
While the C-5 was turning over its engines, a female
crewman gave the G.I.s on board the usual information regarding seat
belts, emergency exits, etc.
Finally, she said, 'Now sit back and enjoy your trip while
your captain, Judith Campbell, and crew take you safely to Afghanistan '
An old MSgt. sitting in the eighth row thought to himself,
'Did I hear her right? Is the captain a woman? '
When the attendant came by he said 'Did I understand you
right? Is the captain a woman?' 'Yes,'! said the attendant, 'In fact,
this entire crew is female.'
'My God,' he said, 'I wish I had two double scotch and
sodas. I don't know what to think with only women up there in the
cockpit.'
'That's another thing, Sergeant,' said the crew member,
'We No Longer Call It The Cockpit'
'It's The Box Office.'
Quote of the day:
'Whatever you give a woman, she will make greater. If you
give her sperm, she'll give you a baby. If you give her a house, she'll
give you a home. If you give her groceries, she'll give you a meal. If
you give her a smile, she'll give you her heart. She multiplies and
enlarges what is given to her. So, if you give her any crap, be ready to
receive a ton of shit.'
This message and any files transmitted with it are the property of
Sigma-Aldrich Corporation, are confidential, and are intended solely for
the use of the person or entity to whom this e-mail is addressed. If you
are not one of the named recipient(s) or otherwise have reason to
believe that you have received this message in error, please contact the
sender and delete this message immediately from your computer. Any other
use, retention, dissemination, forwarding, printing, or copying of this
e-mail is strictly prohibited.
-------------------------------------------------------------------------
-------
Get gifts for them and cashback for you. Try Bing now.
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! --
|