Today's Message Index:
----------------------
1. 02:36 AM - Re: best contactor reliability -- mechanical, solid,state, or manual? (D Wysong)
2. 05:19 AM - Re: KMD 150 Install manual needed (N395V)
3. 07:39 AM - Re: Flap switch (Eric M. Jones)
4. 08:21 AM - Re: Re: GTX327 power switching (Michel Creek)
5. 09:05 AM - Re: Figure z-19 (PSILeD@aol.com)
6. 09:51 AM - Re: Re: GTX327 power switching (Peter Pengilly)
7. 09:57 AM - Re: Low transmit volume on Valcom 760 (privatepilot03)
8. 11:26 AM - Re: Plane-Power (David E. Nelson)
9. 11:34 AM - Re: Figure z-19 (Ernest Christley)
10. 02:06 PM - Re: Re: Belly antenna (Merlin)
11. 02:11 PM - Re: Flap switch (Merlin)
12. 03:12 PM - Re: Flap switch (Dale Fultz)
Message 1
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| Subject: | Re: best contactor reliability -- mechanical, solid,state, |
or manual?
The system is 25 ADC (worst case) at 28 VDC with a nominal
load of about 17 ADC.
The spec environment (vibe, temp) is similar to the Summer
cockpit of my C150 with a prop that needs to be dynamically
balanced. Worse than a lab bench but better than under the
hood of a Hummer. All components are rated for -40 C to +85
C (operating) thus far.
Unfortunately, there are no "non-critical" components in the
system so ANY power loss is bad news.
Again, I'm trying to weigh the pros/cons of mechanical,
solid-state, or manual master battery contactors for this
application. I considered using parallel contactors (as
suggested here) to avoid the single point contactor failure
but found myself staring down the slippery slope of
increased parts count and complexity.
Perhaps the "best" answer is a manual contactor with dual
contacts (one of those big 1/2/Both switches). ???
Any guidance (including "shut up, quit worrying, and use the
darn can!") will be appreciated. :-)
D
--------------------
>>> I have a remotely operated application where the loss of the master
>>> battery contactor will result in the loss of data/money/time (...
>>> and dignity!). My baseline design resembles a "Z" diagram (thanks
>>> Bob!) and I planned to use a mechanical, continuous duty contactor
>>> like the S-701 from B&C. However, a buddy of mine recently
>>> experienced a contactor failure in flight and it caused me to
>>> experience a few "What If!?" nightmares. I'm back to reconsidering
>>> my original decision...
>
> Help us with a bit more information about your application.
> What kind of vehicle? What kind of environment? What's the
> energy requirement to maintain data in vulnerable systems.
> It's often much easier to arrange for brownout and/or momentary
> power loss for a few items than to back-up the whole system.
> Finally, it's almost always better to have a plan-a/plan-b
> modus operandi than to scratch around for "more reliable"
> hardware. EVERYTHING will break at some point in time.
>
> Give us a rundown of your equipment that must stay awake
> and what the power requirements are.
>
> Bob . . .
Message 2
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| Subject: | Re: KMD 150 Install manual needed |
--------
Milt
2003 F1 Rocket
2006 Radial Rocket
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124315#124315
Message 3
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I think what you need is what I sell lots of--the True Servo Conversion for MAC/RACs.
TSCMR. This is a teeny module that converts the external position signal
that you get from a voltage divider potentiometer or even a bank of push buttons
to control a MAC or RAC trim box.
See: http://tinyurl.com/2qo222
These are the parts they left out of the trim box that would have made it a servo.
This also solves the problem of how to connect all those tiny trim box wires.
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones@charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124343#124343
Message 4
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| Subject: | Re: GTX327 power switching |
Found out my problem was low input power voltage below 10. With proper
voltage, everything works fine.
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Michel
Creek
Sent: Monday, July 16, 2007 8:22 PM
Subject: RE: AeroElectric-List: Re: GTX327 power switching
<mwcreek@frontiernet.net>
I'm having the same problem as Sam as detailed in his email below. Does
anyone have a solution to this? I've tried adjusting contrast/brightness
with no affect.
Thanks,
Mike Creek
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of phd1993
Sent: Wednesday, November 15, 2006 7:59 PM
Subject: AeroElectric-List: Re: GTX327 power switching
I have been bench/panel testing my GTX327 during cable assembly prior to
final installation in my panel and I can confirm the Pin 1 / Pin 15
configurations.
Now my question - if I have power supplied via Pin 15 and ground on Pin 25
WITHOUT connecting either the transponder antenna or the altitude encoder
what should the GTX327 display at power on? How about power on while
holding down the FUNC button. All I am getting is the "backpanel"
illuminated with no other display items. Is this proper? Or do I need to
connect either the antenna, the altitude encoder, or both before I start
seeing any items displayed on the panel?
Feedback appreciated.
Thanks,
Sam H.
Zenith 701 kit
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=74927#74927
Message 5
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Ernest,
Attached is a dxf file of the original Z19. If you want the rear battery
option let me know and I will send it to you.
Paul LeDoux
Sharpsburg, Ga.
RV-8 in progress
************************************** Get a sneak peek of the all-new AOL at
http://discover.aol.com/memed/aolcom30tour
Message 6
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| Subject: | Re: GTX327 power switching |
Guys,
I made myself a 12v power supply for the garage/hangar from an old
computer power supply to get over the problem of low voltage problems.
Needs some internal surgery to install an on-off switch (5 mins on
Google provided the answer as most power supplies now switch off on a
signal from the mother board). Runs for ever, stabilized voltage (that I
believe can be tweaked up to 13 or 14v, but I haven't found out how) and
can deliver up to about 20A. Means that I don't have to charge a battery
all the time and I can buy a fresh PC680 just before I'm ready to go
flying.
Peter
RV-6A, DR-107 & RV-7 (building)
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Michel Creek
Sent: 17 July 2007 16:14
Subject: RE: AeroElectric-List: Re: GTX327 power switching
<mwcreek@frontiernet.net>
Found out my problem was low input power voltage below 10. With proper
voltage, everything works fine.
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Michel
Creek
Sent: Monday, July 16, 2007 8:22 PM
Subject: RE: AeroElectric-List: Re: GTX327 power switching
<mwcreek@frontiernet.net>
I'm having the same problem as Sam as detailed in his email below. Does
anyone have a solution to this? I've tried adjusting
contrast/brightness
with no affect.
Thanks,
Mike Creek
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
phd1993
Sent: Wednesday, November 15, 2006 7:59 PM
Subject: AeroElectric-List: Re: GTX327 power switching
<samhutcheson@kc.rr.com>
I have been bench/panel testing my GTX327 during cable assembly prior to
final installation in my panel and I can confirm the Pin 1 / Pin 15
configurations.
Now my question - if I have power supplied via Pin 15 and ground on Pin
25
WITHOUT connecting either the transponder antenna or the altitude
encoder
what should the GTX327 display at power on? How about power on while
holding down the FUNC button. All I am getting is the "backpanel"
illuminated with no other display items. Is this proper? Or do I need
to
connect either the antenna, the altitude encoder, or both before I start
seeing any items displayed on the panel?
Feedback appreciated.
Thanks,
Sam H.
Zenith 701 kit
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=74927#74927
Message 7
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| Subject: | Re: Low transmit volume on Valcom 760 |
I couldn't sign up to the forums with my avidflyerss screen name for some reason,
so I created this one.
Anyway, I tried adjusting the gains on both the radio and headset with little if
any improvement.
At this point, I'm leaving everything as is until I get the plane done and actually
try it at the airport and in the air. Maybe it's fine, I don't know, but
it sure seems quiet to me.
Thanks
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124381#124381
Message 8
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Hi Bob,
Thank you for the followup and everything you do here on the list.
Regards,
/\/elson
Do not archive
On Sat, 14 Jul 2007, Robert L. Nuckolls, III wrote:
> <nuckollsr@cox.net>
>
> At 01:36 PM 7/12/2007 -0500, you wrote:
>
>> <david.nelson@pobox.com>
>>
>>
>> Hi Bob,
>>
>> I was just curious if you had had any time to explore any of Plane-Power's
>> internally regulated alternators on that fancy alternator stand?
>>
>> Thanks,
>
> No. My duties with an ageing father in Medicine Lodge, putting
> down new hardwood floors on my house and needs of my
> new clients (out of town 4 days last week and 3 days next
> week) have push my drive-stand project back into the corner.
>
> Actually, I have no particular plans to test Plane-Power's
> products. They are wired exactly the same architecture
> and alternator control philosophy that you would get if
> if you did a B&C LR-3 installation on an externally
> regulated alternator . . . or figure Z-11 from the book.
>
> I intend to explore the energy questions on alternators
> in general with a goal of achieving positive on/off, any time,
> any conditions control of an internally regulated alternator
> that is NOT modified per the Plane Power manufacturing
> philosophy. I.e. off the shelf automotive.
>
> I can deduce no reason to be skeptical of Plane Power's
> product performance claims.
>
> Bob . . .
>
>
--
~~ ** ~~ Research has shown that Mondays account for 1/7th of your time ~~ ** ~~
Message 9
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PSILeD@aol.com wrote:
> Ernest,
>
> Attached is a dxf file of the original Z19. If you want the rear
> battery option let me know and I will send it to you.
>
> Paul LeDoux
> Sharpsburg, Ga.
> RV-8 in progress
>
>
> Get a sneak peek of the all-new AOL.com
> <http://discover.aol.com/memed/aolcom30tour/?ncid=AOLAOF00020000000982>.
I'm good now (heh, just my opinion).
I've been able to load the file into QCad and do some editing. I also
found dwg2dxf. There was only an RPM, but I used alien to convert it to
a deb file (Linux file installation formats). "dpkg -i" installed the
deb without any other arguments. So I'm cooking with gas now. Thanks,
guys.
Message 10
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| Subject: | Re: Belly antenna |
Thanks for your replies :-)
Phil
Do not archive
-----Message d'origine-----
De : owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] De la part de jetboy
Envoy : lundi 16 juillet 2007 0:31
: aeroelectric-list@matronics.com
Objet : AeroElectric-List: Re: Belly antenna
Bent or sloping whip makes virtually no difference. The ground plane is
still flat, the magnetic component of the radiated field is caused by
current flow, most of which occurs in the first third of the whip, so this
portion is the area to leave straight.
Ralph
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=123983#123983
Message 11
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I'm going to use Aeroelectric suggestion :-) The problem is finding the
switch. The type of the one received with the Van's kit is as hard to toggle
as a contactor !
The genuine Cessna switch is awfully expensive !!!
Philippe
-----Message d'origine-----
De : owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] De la part de Dale
Fultz
Envoy : lundi 16 juillet 2007 15:47
: aeroelectric-list@matronics.com
Objet : AeroElectric-List: Flap switch
--> <dfultz7@earthlink.net>
Can a Cessna flap switch be used instead of the Ray Allan switch for a trim
servo??? If so does someone have a wiring diagram?? Thanks Dale
-----
Message 12
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I have a genuine Cessna 150 switch. I just need to find out if it can be
wired into the system instead of using the supplied switch from Ray Allen
that was with the servo..
----- Original Message -----
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