Today's Message Index:
----------------------
1. 02:26 AM - Re: Re: Picture format for posting (Tony Babb)
2. 06:37 AM - Re: Rotax 914 internal generator (Robert L. Nuckolls, III)
3. 06:41 AM - Re: Re: labeling panel (Jim Wickert)
4. 10:12 AM - Re: Rotax 914 internal generator (rparigoris)
5. 11:20 AM - Re: Re: Rotax 914 internal generator (Robert L. Nuckolls, III)
6. 01:03 PM - ground power switch (woxofswa)
7. 01:03 PM - Re: IVO Electronic CB report (Dennis Glaeser)
8. 02:40 PM - Re: labeling panel (Geoff Heap)
9. 02:44 PM - Re: ground power switch (Robert L. Nuckolls, III)
10. 03:08 PM - Active Notification of Low Voltage (Gordon Smith)
11. 03:34 PM - Re: ground power switch (woxofswa)
12. 03:45 PM - Permanent Magnet Alternators or Dynamo (Gordon Smith)
13. 07:33 PM - Reverse Current - Life Is Indeed Harder When You're Stupid (Valovich, Paul)
14. 09:34 PM - Re: Re: labeling panel (Bill Bradburry)
Message 1
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| Subject: | Re: Picture format for posting |
This is odd. I use Internet Explorer 8, and used earlier versions which
behaved in the same way. Whenever I open a large graphic, e.g. a jpg photo
it opens showing me the top left corner of the photo but when it's finished
downloading it automatically resizes the image to fit my window. Maybe
there's a setting somewhere but I don't remember doing anything to get this
behavior, it's just always done this on a variety of laptops and various
versions of IE.
Tony Babb
Velocity SEFG 62% done, 78% to go
www.alejandra.net/velocity
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of paul
wilson
Sent: Sunday, June 13, 2010 6:43 AM
Subject: AeroElectric-List: Re: Picture format for posting
Oversized pics are a constant issue and most people just delete them
since it is so hard to view them. For PC users Microsoft has the
tool for resizing a picture. Find the download on the right .
http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx
To use the tool click on properties of the pic and choose small or
medium and get an new file for posting.
It would be nice if everyone used the tool.
Regards, Paul
==============
><nuckolls.bob@aeroelectric.com>
>
>At 06:55 AM 6/13/2010, you wrote:
>>
>>6/13/2010
>>
>>PS: There is sort of a gotcha. I posted a jpg picture on the KIS
>>list (see here I hope):
>>
>>http://forums.matronics.com/viewtopic.php?t=71560
>>
>>and the picture posted just fine except that its layout on the
>>forum was so huge such that one had to scroll all over the place to
>>find the area of interest.
>
> This is something of a conundrum when posting pictures.
> Even the most inexpensive of modern cameras are capable
> of imaging and recording in great detail with some pictures
> being as much as 3000 pixels wide.
>
> Bob . . .
Message 2
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| Subject: | Re: Rotax 914 internal generator |
At 08:49 PM 6/13/2010, you wrote:
<rparigor@suffolk.lib.ny.us>
Hi group
I am using Eris Jones Linear Over-Voltage Protector to control my
Rotax 914 internal generator through a 75 amp automotive relay.
At moment I have relay on my schematic downstream of the Ducati
regulator. If regulator fails and there is in fact a runaway over
volt event, true the L OVP device will disconnect it from my
electrical system, but the generator will still be outputting.
Do you think I would be better off moving the relay that is
controlled by the L OVP to be in series with one of the generators
yellow output wires?
That is a better place to "shut the system" down.
See:
http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf
Bob . . .
Message 3
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| Subject: | Re: labeling panel |
J0n,
Here is another approach I have been looking at that has been used by some
other builders and they have had great results. I have not done it but they
say it works great. http://www.pulsarprofx.com/ There are some actual
panel shots on this site. Let me know your comments. Take care happy
building
Jim Wickert
Tel 920-467-0219
Cell 920-912-1014
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of jonlaury
Sent: Sunday, June 13, 2010 11:44 PM
Subject: AeroElectric-List: Re: labeling panel
Jim,
I used the HiRes screens. I don't think there is a specific hi-res paint.
The resolution is a function of the # of threads/inch in the warp and weft
of the screen.
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301122#301122
Message 4
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| Subject: | Re: Rotax 914 internal generator |
Hi Bob
"That is a better place to "shut the system" down.
See:
http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf"
OK I will place relay at yellow wire.
How many AC volts, and how many AC amps should the contacts of the relay be rated
to "break" at?
Thx. again
Ron Parigoris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301199#301199
Message 5
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| Subject: | Re: Rotax 914 internal generator |
At 12:11 PM 6/14/2010, you wrote:
><rparigor@suffolk.lib.ny.us>
>
>Hi Bob
>
>"That is a better place to "shut the system" down.
>See:
>http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf"
>
>OK I will place relay at yellow wire.
>
>How many AC volts, and how many AC amps should the contacts of the
>relay be rated to "break" at?
The relay you called out on the DC side of
the rectifier/regulator will be fine.
AC is MUCH easier on relays than is DC.
Bob . . .
Message 6
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| Subject: | ground power switch |
Just to make sure I understand the science as I add a ground power plug to my RV-10
project.
The panel switch to activate the ground power just needs to be a simple on/off
switch that connects between the GP relay and aircraft ground and activates the
relay by grounding it.
Is that right, or am I off the reservation?
Also, to power ship's power from a ground power source, do both the GP switch and
the main master switch both have to be on?
Thanks in advance. Please excuse my neophyte questions.
--------
Myron Nelson
Mesa, AZ
Emp completed, QB wings completed, legacy build fuse in progress
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301217#301217
Message 7
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| Subject: | Re: IVO Electronic CB report |
Here are pictures of my IVO circuit. I soldered the parts to the 'wrong' side
of the board so that I didn't have to worry about unintended connections on the
back side. The board looked very nice before I had to chop it down to fit in
the project box. I've also attached a PDF showing Bob's circuit design and
the physical arrangement of parts and connections I developed. I should have
gotten the project box up front, and I could have easily placed the components
closer on the board. Oh well.
Dennis
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301219#301219
Attachments:
http://forums.matronics.com//files/prop_circuit_layout_164.pdf
http://forums.matronics.com//files/board_in_box_541.jpg
http://forums.matronics.com//files/board_back_770.jpg
Message 8
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| Subject: | Re: labeling panel |
Bill Bradburry. Hey Bill. I'm in the market for panel marking. Can we get a pic
of your panel? Thanks....Geoff
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301222#301222
Message 9
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| Subject: | Re: ground power switch |
At 02:57 PM 6/14/2010, you wrote:
>
>Just to make sure I understand the science as I add a ground power
>plug to my RV-10 project.
>
>The panel switch to activate the ground power just needs to be a
>simple on/off switch that connects between the GP relay and aircraft
>ground and activates the relay by grounding it.
Correct ONLY IF you do not plan to use
crowbar OV protection lik4 pwge 4 of
http://www.aeroelectric.com/articles/grndpwr.pdf
If the ov protection is included, then the
'switch' must also be a circuit breaker.
This can be a switch-breaker . . . or a
simple push-pull, 5A breaker.
If you don't have ov protection, then page
5 applies and a simple switch suffices.
>Also, to power ship's power from a ground power source, do both the
>GP switch and the main master switch both have to be on?
If wired per the diagrams cited above, you can
charge the ship's battery through ground power
and leave the master off. But to crank the engine
or run equipment for servicing on the ground,
BOTH switches are ON.
Bob . . .
Message 10
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| Subject: | Active Notification of Low Voltage |
Many current OBAM aircraft have electronic EFIS and/or EIS systems installed
in their panels. Most of these systems have the capability to monitor
various engine and electrical parameters. Limits can be programmed so that
when a parameter is outside of the set limits, this is enunciated via audio
and/or visual notification (a warning light).
Is the use of these EFIS/EIS systems adequate for proper stand alone "Active
Notification of Low Voltage"? Or is it recommended that additional
equipment be employed? This additional equipment would be such as AEC9005,
AEC9024 (when available), or other such devices on the market.
Gordon Smith
Message 11
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| Subject: | Re: ground power switch |
Thanks, it is starting to make more sense now. I have been using your layout and
do have the crowbar.
What I wasn't going to bother with was the indicator light, but I am re-thinking
that.
--------
Myron Nelson
Mesa, AZ
Emp completed, QB wings completed, legacy build fuse in progress
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301231#301231
Message 12
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| Subject: | Permanent Magnet Alternators or Dynamo |
In the AEC writings, Matronics postings and Z figures I see references to
Permanent Magnet Alternators and Dynamos. Are they one in the same; is the
physics basically the same? For instance in a Rotax or Jabiru system with a
stator being energized by magnets on the flywheel technically the same as a
B&C SD-8?
Can regulators for these systems be substituted and crisscrossed? I see
where you have illustrated the use of a AM 101406 John Deere Regulator for
the Z-9 Corvair system. I also recollect discussions about using of this
same regulator as a more robust substitution for the Rotax Ducati and the
Jabiru supplied regulator. Following this line of thought, could the AM
101406 be used also with the SD-8?
In the Z figures that incorporate Dynamos, I see some variables. I can't
quite understand the reasons for some of them.
1. Some systems incorporate a self-excitation feature such as
illustrated in Z-25. When is this recommended? Should it be used with the
Jabiru or Rotax charging system?
2. Shut down control of these systems generally incorporate a S704-1
relay with a OVM-14 crowbar over voltage module (or AEC9024) across the coil
terminals. In some Z figures this S704-1 also utilizes a diode across the
coil and some don't. Does the internal electronics of the OVM-14 or AEC9024
preclude the use of such a diode in some cases?
3. The S704-1 relay is employed sometimes in one of the legs of the
Dynamo before the regulator and sometimes in the regulator output to the
main bus. What is the reason behind this decision?
4. In some Z figures the sense for the regulator is tied directly to
the regular 12V.DC output and in others it comes from the main bus through
the alternator switch. Is there a preferred reason for one or the other?
Gordon Smith
Message 13
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| Subject: | Reverse Current - Life Is Indeed Harder When You're |
Stupid
The dumbest thing I've done on my RV-8A project - I reversed the battery co
nnections when reassembling after firewall forward work and planning a fina
l elec check before riveting on the top skin. Z-13/8; Smoke and fire from t
he diode wire to the main terminal of the battery contactor; corrected pola
rity and tried a jumper wire - more smoke and fire when I go to Batt/Alt -
making me think there is something wrong further downstream.
Ordered a replacement contactor from B&C (this time a -2; previous was a -1
) but have been on business travel and have not had a chance to troubleshoo
t.
Jumping the contactor and switching to Batt seems to have all the trons flo
wing to their proper destination; going to Batt/Alt causes everything to sh
ut down.
Any words of wisdom from the forum. Don't bother reminding me what a DS mov
e it was - I already know and still can't believe I did it.
Paul Valovich
N192NM Reserved
Message 14
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| Subject: | Re: labeling panel |
Geoff,
I will have to take some and get them to you.
Bill B
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Geoff
Heap
Sent: Monday, June 14, 2010 5:38 PM
Subject: AeroElectric-List: Re: labeling panel
Bill Bradburry. Hey Bill. I'm in the market for panel marking. Can we get a
pic of your panel? Thanks....Geoff
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301222#301222
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