Today's Message Index:
----------------------
1. 05:39 AM - SD-8 Failure in Z-13 (Robert L. Nuckolls, III)
2. 07:31 AM - Z diagram notations (James Baldwin)
3. 08:08 AM - Re: Z diagram notations (Jay Hyde)
4. 08:11 AM - Re: Z diagram notations (ROGER & JEAN CURTIS)
5. 08:14 AM - Re: Z diagram notations (Dale Rogers)
6. 08:36 AM - Contactors (Jay Hyde)
7. 09:03 AM - Re: Contactors (jaybannist@cs.com)
8. 10:07 AM - Re: Contactors (ROGER & JEAN CURTIS)
9. 10:22 AM - Re: GARMIN GPS 296 panel installation (Carlos Trigo)
10. 10:32 AM - Re: Contactors (mikef)
11. 10:54 AM - Re: Contactors (ROGER & JEAN CURTIS)
12. 01:05 PM - Re: GARMIN GPS 296 panel installation (Greg Young)
13. 01:46 PM - Re: Contactors (Jay Hyde)
14. 02:07 PM - Re: Z diagram notations (Robert L. Nuckolls, III)
15. 08:04 PM - jab 3300 ground straps (bob noffs)
16. 08:32 PM - Re: jab 3300 ground straps (Robert L. Nuckolls, III)
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: | SD-8 Failure in Z-13 |
Bob. I have used your Z-13 "All Electric Airplane on a Budget" schematic as
the basis of the electrical system on my Long-Ez. I recently returned from
a flight to find the Aux Alt Off/On switch to be ON, whilst the DC Power
switch was on, the battery contactor closed and the main alternator
supplying the power. On checking the Aux Alt system subsequently I have
that it does not work. To help me with the fault finding, are there any
parts that could have shorted out/been fried? Is there a procedure for
checking out the 'dynamo' and its circuit? Any help would be great. Many
thanks Bob.
First, it's not an automatic no-no to have the small
alternator turned on at the same time the main alternator
is on . . .
When two alternators run in parallel, the alternator
with the LOWER regulator voltage set-point will
relax and the one with the HIGHER set-point will
attempt to pick up all system loads. If the 8A
machine had the higher set-point, then it would have
been running all-out for the duration of your flight.
The main alternator would have picked up the difference
between the SD-8 output and system loads as the bus
voltage sagged.
This is not an automatic recipe for alternator failure
but if the rectifier/regulator were inadequately
heat-sinked, it could have caused internal damage
at some point in the flight.
That's about the only part of the SD-8 system that's
vulnerable. Check with a voltmeter that you have AC
voltage coming in while the engine is running and that
the disconnect relay is closing.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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: | Z diagram notations |
I was looking at the old Z-1 Aeroelectric drawing and saw the notation "MOV"
inside an oval box. Anybody know what that means and where the "notes" are
for these drawings? Thank you.
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: | Z diagram notations |
A MOV is a Metal Oxide Varistor and is used to protect against overvoltages;
I don't have the Z1 diagram so I cannot tell what its doing in the circuit-
if you want to send the diagram to me (email add below) I can have a look at
it.
Jay
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contact details for Jay Hyde
Mobile: +27 (0) 83 300 8675
Email: <mailto:jay@horriblehyde.com> jay@horriblehyde.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of James
Baldwin
Sent: 14 October 2008 04:30 PM
Subject: AeroElectric-List: Z diagram notations
I was looking at the old Z-1 Aeroelectric drawing and saw the notation "MOV"
inside an oval box. Anybody know what that means and where the "notes" are
for these drawings? Thank you.
--
This message has been scanned for viruses and
dangerous content by Pinpoint, and is
believed to be clean.
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: | Z diagram notations |
James,
This is a metal oxide varistor, used as a transient suppressor across an
inductor. It has been determined that a diode works better for this
task,
so you will see diodes across the contactor coils in the later "Z"
drawings.
Roger
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of James
Baldwin
Sent: Tuesday, October 14, 2008 10:30 AM
Subject: AeroElectric-List: Z diagram notations
I was looking at the old Z-1 Aeroelectric drawing and saw the notation
"MOV"
inside an oval box. Anybody know what that means and where the "notes"
are
for these drawings? Thank you.
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 |
|
Subject: | Re: Z diagram notations |
James Baldwin wrote:
>
> I was looking at the old Z-1 Aeroelectric drawing and saw the notation
> MOV inside an oval box. Anybody know what that means and where the
> notes are for these drawings? Thank you.
>
Metal Oxide Varistor? Generally used for surge protection.
Dale R.
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 |
|
Hey there, new to the list..
Where do you source power contactors for 12V applications?
Thanks
Jay
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contact details for Jay Hyde
Mobile: +27 (0) 83 300 8675
Email: <mailto:jay@horriblehyde.com> jay@horriblehyde.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
This message has been scanned for viruses and
dangerous content by Pinpoint, and is
believed to be clean.
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 |
|
I'm afraid I don't know how to source a contactor. I don't even know what that
means.? However, you can buy them at bandcspecialties.com.
Jay in Dallas
-----Original Message-----
From: Jay Hyde <jay@horriblehyde.com>
Sent: Tue, 14 Oct 2008 10:39 am
Subject: AeroElectric-List: Contactors
Hey there, new to the list..
?
Where do you source power contactors for 12V applications?
?
Thanks
?
Jay
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contact details for Jay Hyde
Mobile: +27 (0) 83 300 8675
Email: jay@horriblehyde.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
?
?
--
This message has been scanned for viruses and
dangerous content by Pinpoint Securemail,
and is believed to be clean.
________________________________________________________________________
Email message sent from CompuServe - visit us today at http://www.cs.com
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 |
|
Dale,
For the continuous duty Main power and intermittent duty Starter
contactors,
I purchased mine from Aircraft Spruce.
Roger
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jay
Hyde
Sent: Tuesday, October 14, 2008 11:39 AM
Subject: AeroElectric-List: Contactors
Hey there, new to the list..
Where do you source power contactors for 12V applications?
Thanks
Jay
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contact details for Jay Hyde
Mobile: +27 (0) 83 300 8675
Email: <mailto:jay@horriblehyde.com> jay@horriblehyde.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
This message has been scanned for viruses and
dangerous content by Pinpoint Securemail,
and is believed to be clean.
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: | GARMIN GPS 296 panel installation |
Thanks to everybody who answered.
Stein or anyone else
Do you know if the "Alarm" white wire is designed to be connected to an
annunciator panel light?
If yes, does it carry power or ground to the light?
Carlos
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of SteinAir,
Inc.
Sent: domingo, 12 de Outubro de 2008 21:37
Subject: RE: AeroElectric-List: GARMIN GPS 296 panel instalation
Hi Carlos,
Typically everyone ignores those wires, except for the data in - which is
used for traffic input on the 396/496 GPSes.
Cheers,
Stein
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Carlos
Trigo
Sent: Sunday, October 12, 2008 2:03 PM
Subject: AeroElectric-List: GARMIN GPS 296 panel instalation
For those of you who have ever installed a portable GARMIN GPS296 in your
panel, using the optional Power/Data Cable, will you please enlighten me
about:
- White wire, labelled as "Alarm", what is it for?
- Brown wire (labelled as "Voice(+) ) and Orange (labelled as
Voice(-) ), are these to be connected to the aircraft Audio system?
- have you used any of the "Data In" wires (Yellow or Green)?
Carlos
href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matro
nics.com/Navigator?AeroElectric-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
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 |
|
http://www.gigavac.com/search/index.htm
type in: GX-11 and review the specs.
Gigavac contactors - a bit more expensive but high quality. They take phone orders,
call them and tell them you want the GX-11 model for a 12 volt system.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 8750#208750
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 |
|
Jay!
Don't know why I called you Dale. My apologies!
Roger
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of ROGER
&
JEAN CURTIS
Sent: Tuesday, October 14, 2008 1:06 PM
Subject: RE: AeroElectric-List: Contactors
Dale,
For the continuous duty Main power and intermittent duty Starter
contactors,
I purchased mine from Aircraft Spruce.
Roger
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jay
Hyde
Sent: Tuesday, October 14, 2008 11:39 AM
Subject: AeroElectric-List: Contactors
Hey there, new to the list..
Where do you source power contactors for 12V applications?
Thanks
Jay
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contact details for Jay Hyde
Mobile: +27 (0) 83 300 8675
Email: <mailto:jay@horriblehyde.com> jay@horriblehyde.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
This message has been scanned for viruses and
dangerous content by Pinpoint Securemail,
and is believed to be clean.
<http://www.matronics.com/Navigator?AeroElectric-List>
http://www.matronics.com/Navigator?AeroElectric-List
<http://forums.matronics.com> http://forums.matronics.com
<http://www.matronics.com/contribution>
http://www.matronics.com/contribution
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: | GARMIN GPS 296 panel installation |
If memory serves, the Alarm wire is the audible alarms - not a light. I
think that's the one I wired from my 396 into an unswitched Aux on my audio
panel. The voice wires (for the 396 at least) carry the XM radio and turn
direction voice - but in mono. I used the stereo output jack and wired into
the entertainment input on the audio panel.
Regards,
Greg Young
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Carlos
Trigo
Sent: Tuesday, October 14, 2008 12:21 PM
Subject: RE: AeroElectric-List: GARMIN GPS 296 panel installation
Thanks to everybody who answered.
Stein or anyone else
Do you know if the "Alarm" white wire is designed to be connected to an
annunciator panel light?
If yes, does it carry power or ground to the light?
Carlos
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of SteinAir,
Inc.
Sent: domingo, 12 de Outubro de 2008 21:37
Subject: RE: AeroElectric-List: GARMIN GPS 296 panel instalation
Hi Carlos,
Typically everyone ignores those wires, except for the data in - which is
used for traffic input on the 396/496 GPSes.
Cheers,
Stein
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Carlos
Trigo
Sent: Sunday, October 12, 2008 2:03 PM
Subject: AeroElectric-List: GARMIN GPS 296 panel instalation
For those of you who have ever installed a portable GARMIN GPS296 in your
panel, using the optional Power/Data Cable, will you please enlighten me
about:
- White wire, labelled as "Alarm", what is it for?
- Brown wire (labelled as "Voice(+) ) and Orange (labelled as
Voice(-) ), are these to be connected to the aircraft Audio system?
- have you used any of the "Data In" wires (Yellow or Green)?
Carlos
href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matro
nics.com/Navigator?AeroElectric-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
http://www.matronics.com/contribution
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 |
|
No problem! Thanks for all the answers everyone.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contact details for Jay Hyde
Mobile: +27 (0) 83 300 8675
Email: <mailto:jay@horriblehyde.com> jay@horriblehyde.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of ROGER &
JEAN CURTIS
Sent: 14 October 2008 07:53 PM
Subject: RE: AeroElectric-List: Contactors
Jay!
Don't know why I called you Dale. My apologies!
Roger
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of ROGER &
JEAN CURTIS
Sent: Tuesday, October 14, 2008 1:06 PM
Subject: RE: AeroElectric-List: Contactors
Dale,
For the continuous duty Main power and intermittent duty Starter contactors,
I purchased mine from Aircraft Spruce.
Roger
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jay Hyde
Sent: Tuesday, October 14, 2008 11:39 AM
Subject: AeroElectric-List: Contactors
Hey there, new to the list..
Where do you source power contactors for 12V applications?
Thanks
Jay
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contact details for Jay Hyde
Mobile: +27 (0) 83 300 8675
Email: <mailto:jay@horriblehyde.com> jay@horriblehyde.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
This message has been scanned for viruses and
dangerous content by Pinpoint Securemail,
and is believed to be clean.
<http://www.matronics.com/Navigator?AeroElectric-List>
http://www.matronics.com/Navigator?AeroElectric-List
<http://forums.matronics.com> http://forums.matronics.com
<http://www.matronics.com/contribution>
http://www.matronics.com/contribution
<http://www.matronics.com/Navigator?AeroElectric-List>
http://www.matronics.com/Navigator?AeroElectric-List
<http://forums.matronics.com> http://forums.matronics.com
<http://www.matronics.com/contribution>
http://www.matronics.com/contribution
--
This message has been scanned for viruses and
dangerous content by Pinpoint, and is
believed to be clean.
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: Z diagram notations |
At 07:30 AM 10/14/2008 -0700, you wrote:
>I was looking at the old Z-1 Aeroelectric drawing and saw the notation MOV
>inside an oval box. Anybody know what that means and where the notes are
>for these drawings? Thank you.
Your book is waaaayyyy out of date. Suggest you download the
latest Z-figures at:
http://aeroelectric.com/whatsnew.html
The MOV's were an early experiment that was supposed
to effectively tame the magnetic field collapse transient
in relay and contactor coils. It proved not be as efficient
and cost effective as the ordinary diode which you will
find featured in later drawings. In the current drawing
set, Z-1 is replaced by Z-11.
Bob . . .
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: | jab 3300 ground straps |
hi all, i apologize for the garbled mess i sent yesterday and promise
never to mess with copy and paste again!
bob, let me ask the question again.................. my jab 3300 is
grounded with 4ga cable from the battrey to the 1/2'' thick aluminum
plate which attraches the engine to the engine mount. this is a common
method of grounding. a recent service bulletin recommends grounding at a
3/16'' bolt which attaches the starter to this plate. supposed to
increase the voltage to the starter by .4 volts. i want to run my ground
cable to the starter bolt AND with a ground strap also ground from the
starter bolt to the aluminum plate. i would solder the strap to the
cable in the connector that attaches the cable to the starter bolt.
my question is this...should i use 4 ga strap[ from napa and big as a
house] or will 10 ga strap be sufficient considering that i am grounding
in 2 locations, 8'' from each other?
thanks for your time, bob noffs
Message 16
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: jab 3300 ground straps |
At 09:13 PM 10/13/2008 +0000, you wrote:
><icubob@newnorth.net>
>
>bob,
>my jab is grounded with 4ga from the battery to the 1/2'' thick
>aluminum plate which attaches the engine to the engine mount. a common
>place i understand. a recent service bulletin recommends grounding at
>a 3/16''bolt which attaches the starter to the plate. supposed to
>increase the voltage by .4 to the starter. i wat to run my groung
>cable to the starter and with a ''groung strap'' also ground from the
>starter bolt to the alum. plate. i would solder the strap to the cable
>in the connector that attaches the cable to the starter bolt. my
>question is this....should i use ''4ga'' strap [from napa and as big
>as a house] or will 10 ga strap be sufficient considering that i am
>grounding in the 2 locations, 8'' from each other?
>
>thanks for an answer to a wordy question,
I'm not real sure I have a clear image of your
proposed architecture but let me offer this. I'm
skeptical of a 0.4 volt difference across engine
structure at starter currents but let's assume
there is value in getting the battery(-) very
close to the starter mounting bolts . . . so
fine, run battery(-) to the suggested location.
All other currents that run through "ground"
connections are small by comparison. They're the
loads supported by your alternator which if I
recall correctly is good for about 20 Amps.
So a single, super-flex wire from your engine
crankcase to a single point ground on the firewall
would be sufficient. Suggest a piece of the smallest
welding cable you can get which I think is 6AWG.
You don't need the copper but the flexibility and
robustness is good. Use 4AWG welding cable for the
other "fat" wires in the starter circuit.
Ground everything else to the single point ground
on the firewall.
Bob . . .
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! --
|