Today's Message Index:
----------------------
1. 12:42 AM - Cross reference site for alternator parts (Vincent Himsl)
2. 05:37 AM - Re: Comm will not transmit with audio panel installed (Radioflyer)
3. 06:43 AM - Proximity of ALT breaker on panel ()
4. 08:24 AM - Re: Comm will not transmit with audio panel installed (claporte)
5. 08:35 AM - Re: Proximity of ALT breaker on panel (Robert L. Nuckolls, III)
6. 10:50 AM - Re: Cross reference site for alternator parts (Robert L. Nuckolls, III)
7. 10:56 AM - Re: Proximity of ALT breaker on panel ()
Message 1
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| Subject: | Cross reference site for alternator parts |
Hello=2C
If you want to find parts for your alternator I recommend the following sit
e:
http://www.wai-wetherill.com/products/crossref.cfm
For an example=2C enter in this part number: 126000-1160. This is the Inter
nal Regulator for my Denso alternator 40amp that came with my aerosport eng
ine by Canadianaeromanufacturing.
This site gave me different numbers for the Denso Internal Regulator=2C for
my Denso alternator=3B also for lester numbers=2C toyota part numbers=2C a
nd the models of alternators this regulator is used in.
>From there I was able to Google using the Toyota number and order from Holc
ombe Armature the regulator for $30.00 including shipping.
And why did I need a replacement internal regulator? Well...
I wired up a blinking RED LED from Walmart (yes Walmart) to my alternator a
s it would help remind me to turn off the key/master. However=2C I managed
to incorrectly wire the LED to the regulator power (IG) lead and full batt
ery to the light (L) lead. Result? The transistor that controls the proble
m light inside the regulator shorted out.
My first clue occured on first engine start when my Dynon started giving me
really bizare information=2C then nothing. except for the blinking LED.
I reversed the connection and hoping for the best=2C fired up the engine. Y
es one of those hope against hope moments.
To my surprise=2C especially after hours going through the internal versus
external regulator debate in the archives=2C the regulator/alternator worke
d fine=3B Rock solid 14.5 volts=2C but the LED kept blinking. Hence my shor
ted transistor theory.
Probably would not have happened if I had resisted the problem light option
.
Regards=2C
Vince H.
RV8 N8432 Taxi Tests (and alternator repair)
_________________________________________________________________
Rediscover Hotmail=AE: Get e-mail storage that grows with you.
http://windowslive.com/RediscoverHotmail?ocid=TXT_TAGLM_WL_HM_Rediscover_
Storage1_042009
Message 2
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| Subject: | Re: Comm will not transmit with audio panel installed |
Sounds like you have two issues, the microair PTT function and the squeel. I'm
not talking from experience, but apparently the MicroAir radio is known for having
peculiar "ground level" requirements for the PTT switch to work. Look into
the RST (Jim Weir's) website and in one of his past articles he talks about
the issues he found re: Microair and the PTT switch. This may help one of your
issues, but I can't be sure.
--Jose
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238888#238888
Message 3
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| Subject: | Proximity of ALT breaker on panel |
1. I am working with the Z-13/8 schematic and would like to find
out if there is any justification for positioning the alternator breaker
next to the alternator switch for any reason other than convenience of
the diagram. I would like to use those slots for switches and move the
breakers over to the right side of the panel.
2. Also, is there any issue with painting/powder coating the cover
on the SD-8?
3. Has there been any resolve to the claim of the crowbar OVM
kicking out the SD-8 when using the self-excite feature from Z-25?
Thanks,
Glenn
Message 4
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| Subject: | Re: Comm will not transmit with audio panel installed |
OK
1. I have installed the fiber washers on all headset jacks...I will check that
they are properly grounded.
2. The RST article states "the little rascal wants no
more than 0.4 volts to fully transmit. So, two days before Oshkosh I'm inside the
audio panel cutting and
pasting an extra relay onto the board to do a "hard" ground on the PTT line. Just
be aware of this requirement
for very low voltage on the key line when you install your Microair." I am almost
certain this is the problem. However, digging around inside of the audio
panel is beyond my capabilities...any ideas on how to do this with the wiring
(possibly a variable resistor in the com 1 key wire)?
Thanks for the help!
Craig
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238911#238911
Message 5
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| Subject: | Re: Proximity of ALT breaker on panel |
At 08:41 AM 4/13/2009, you wrote:
>1. I am working with the Z-13/8 schematic and would like to
>find out if there is any justification for positioning the
>alternator breaker next to the alternator switch for any reason
>other than convenience of the diagram. I would like to use those
>slots for switches and move the breakers over to the right side of the panel.
Breaker(s) . . . you have more than one breaker. If
you are using breakers as opposed to fuse blocks, then
yes, all the breakers go together and the fusible link
that feeds the alternator breaker is not useful.
>
>2. Also, is there any issue with painting/powder coating the
>cover on the SD-8?
Issue? What kind of issue? These have been produced
by at least hundreds of thousands for the production
of engine driven power on all manner of vehicles for
decades.
>
>3. Has there been any resolve to the claim of the crowbar OVM
>kicking out the SD-8 when using the self-excite feature from Z-25?
Not that I'm aware of. Leave it off if you're
worried about it. Put the self-excitation mod
on if you're interested in resolving it. But as
someone pointed out here on the list a few days
ago, Z-13/8 doesn't allow stand-alone operation
of the SD-8 . . . so the self-excitation feature
adds no value. I plan to eliminate it in future
revisions of Z-13/8.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 6
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| Subject: | Re: Cross reference site for alternator parts |
At 02:39 AM 4/13/2009, you wrote:
>Hello,
>
>If you want to find parts for your alternator I recommend the following site:
>
>http://www.wai-wetherill.com/products/crossref.cfm
Interesting 'net resource sir. Thank you!
>I wired up a blinking RED LED from Walmart (yes Walmart) to my
>alternator as it would help remind me to turn off the
>key/master. However, I managed to incorrectly wire the LED to the
>regulator power (IG) lead and full battery to the light (L) lead.
>Result? The transistor that controls the problem light inside the
>regulator shorted out.
Don't you have a flashing light that warns of
under-voltage? The warning light output from
an internal regulator is problematic as to
meaning. It's certainly good notification of
the alternator not turning but it doesn't
annunciate all failure contingencies.
>To my surprise, especially after hours going through the internal
>versus external regulator debate in the archives, the
>regulator/alternator worked fine; Rock solid 14.5 volts, but the LED
>kept blinking. Hence my shorted transistor theory.
>
>Probably would not have happened if I had resisted the problem light option.
I've read that certain "L" connections are current
limited and not subject to the failure you've
hypothesized . . . but without having detailed
design information on specific products, current
limiting cannot be deduced and your hypothesis
is a good one.
Some internally regulated alternators won't come
on line without some sense of continuity through
the warning light to the bus. I had a builder some
years ago successfully fool his alternator into
functionality by tying a 120 ohm, 2W resistor between
"IG" and "L".
Thanks for sharing your experience with us!
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 7
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| Subject: | Proximity of ALT breaker on panel |
Thanks Bob,
Yes, I have one breaker for my primary alt (5 amp) and one for the aux
SD-8 (2 amp). Everything else is fuse blocks. I am going to add a second
battery to Z13/8 anyway (paranoia, lots of IFR and night flying, dual EI
and so on), so I will omit the self-excite option.
Glenn
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Robert L. Nuckolls, III
Sent: Monday, April 13, 2009 11:33 AM
Subject: Re: AeroElectric-List: Proximity of ALT breaker on panel
<nuckolls.bob@aeroelectric.com>
At 08:41 AM 4/13/2009, you wrote:
>1. I am working with the Z-13/8 schematic and would like to
>find out if there is any justification for positioning the
>alternator breaker next to the alternator switch for any reason
>other than convenience of the diagram. I would like to use those
>slots for switches and move the breakers over to the right side of the
panel.
Breaker(s) . . . you have more than one breaker. If
you are using breakers as opposed to fuse blocks, then
yes, all the breakers go together and the fusible link
that feeds the alternator breaker is not useful.
>
>2. Also, is there any issue with painting/powder coating the
>cover on the SD-8?
Issue? What kind of issue? These have been produced
by at least hundreds of thousands for the production
of engine driven power on all manner of vehicles for
decades.
>
>3. Has there been any resolve to the claim of the crowbar OVM
>kicking out the SD-8 when using the self-excite feature from Z-25?
Not that I'm aware of. Leave it off if you're
worried about it. Put the self-excitation mod
on if you're interested in resolving it. But as
someone pointed out here on the list a few days
ago, Z-13/8 doesn't allow stand-alone operation
of the SD-8 . . . so the self-excitation feature
adds no value. I plan to eliminate it in future
revisions of Z-13/8.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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