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Erich_Weaver(at)URSCorp.c
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 Posted: Tue Mar 13, 2007 8:33 am Post subject: wiring diagram benefits? |
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I may be asking for a beating here, but exactly why should I create detailed wiring diagrams? I wired my RV-7A myself following the Z-13/8 schematic, and have relatively easy access to all my electrical components. All wires are labeled on both ends, indicating where they came from and where they are going to. I probably should have sketched out the wiring diagrams as I completed routing each wire, but it can still be done now without too much trouble since my forward top skin is still off. Ok, I admit to a touch of laziness here, which is enhanced by a growing anticipation of the first engine start and flight, but I am having difficulty describing to my self exactly what future scenario makes that wiring book a must have.
Go ahead and set me straight. Or hey, feel free to tell me "never did it, never needed it" as well.
regards
erich weaver
[quote][b]
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N6030X(at)DaveMorris.com
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| Posted: Tue Mar 13, 2007 8:59 am Post subject: wiring diagram benefits? |
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It's not for your benefit right now. It's for your benefit in 3
years when you scratch your head and wonder what the heck you did
this or that for, and for the next guy who buys your plane and has no
idea what you were thinking. Same reason programmers add comments to
their software.
You should see the undocumented mess I inherited under my panel. The
only way I'll ever figure it out is to take it all apart and put it
back together again. And that will take about a week of
effort. Document it now, and generations that follow will thank you.
Dave Morris
At 11:33 AM 3/13/2007, you wrote:
| Quote: | I may be asking for a beating here, but exactly why should I create
detailed wiring diagrams? I wired my RV-7A myself following the
Z-13/8 schematic, and have relatively easy access to all my
electrical components. All wires are labeled on both ends,
indicating where they came from and where they are going to. I
probably should have sketched out the wiring diagrams as I completed
routing each wire, but it can still be done now without too much
trouble since my forward top skin is still off. Ok, I admit to a
touch of laziness here, which is enhanced by a growing anticipation
of the first engine start and flight, but I am having difficulty
describing to my self exactly what future scenario makes that wiring
book a must have.
Go ahead and set me straight. Or hey, feel free to tell me "never
did it, never needed it" as well.
regards
erich weaver
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N1DeltaWhiskey(at)comcast
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| Posted: Tue Mar 13, 2007 10:36 am Post subject: wiring diagram benefits? |
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Erich,
Food for thought:
If you need your leading edge open now to trace the wiring, think about where you will be when you close the leading edge, then a year from now, and 5-years from now. If you cannot draw your wiring diagram now without even looking at the wiring - don't you think you will be in trouble down the road? Labeling the wires will help, but there is nothing like a good diagram to help in understanding an airplane's electrics.
To save time now - and to make for a winter time project, draw your diagrams in pencil now and make nice ones for permanent documentation later. You could start with Bob's Z diagram and add the various label names you used on your wires (specially if you used abbreviations), along with wire gauge, color, etc. Also, be sure to add any connectors with the pin number. Consider adding manufacturer & part numbers for replacement purposes.
Those electrical diagrams you do now may be worth $$$ down the road. Consider that I, and probably others, would not even consider buying a plane without thorough documentation, unless it was at a "bargain" price.
Doug Windhorn
[quote] ---
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Gilles.Thesee(at)ac-greno
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| Posted: Tue Mar 13, 2007 10:51 am Post subject: wiring diagram benefits? |
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Dave N6030X a écrit :
| Quote: |
<N6030X(at)DaveMorris.com>
It's not for your benefit right now. It's for your benefit in 3 years
when you scratch your head and wonder what the heck you did this or
that for, and for the next guy who buys your plane and has no idea
what you were thinking.
|
And what if one piece of equipment doesn't work as expected (things
sometimes happen), and you don't have a proper diagram to reflect on ?
I did a one page per system wire book, and took time to update it after
every change I made, and wiring and troubleshooting proved a breeze.
Troubleshooting ?
Yes I experienced troubles with off-the-shelf equipment (not my wiring),
and had to pinpoint the cause.
And when isolating a circuit during maintenance, I refer to my book,
because wiring was 4 years ago now, and things fade away in my mind.
So, I did, and I'm happy I did.
Regards,
Gilles
http://contrails.free.fr
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larry(at)macsmachine.com
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| Posted: Tue Mar 13, 2007 11:36 am Post subject: wiring diagram benefits? |
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Hi Erich,
You need a wiring diagram if only to keep notes of how things are and
after you're gone, the next owner needs some
hint of where you put things. I did a wiring diagram because there are
just too many things to remember only 3 years after
the fact. Nice to know what bundle of wires to look to when things go
down. Saved me on two occasions so far.
Modifications also require some idea of how you're loaded before the
fact, so if nothing else, do a simple one.
See link and modify them to suit you if you want.
http://www.macsmachine.com/images/electrical/full/primary-wiring.gif
http://www.macsmachine.com/images/electrical/small/primary-wiring-(SH-2).gif
http://www.macsmachine.com/images/electrical/full/primary-wiring-(SH-3).gif
Larry McFarland at www.macsmachine.com
Erich_Weaver(at)URSCorp.com wrote:
| Quote: |
I may be asking for a beating here, but exactly why should I create
detailed wiring diagrams? I wired my RV-7A myself following the Z-13/8
schematic, and have relatively easy access to all my electrical
components. All wires are labeled on both ends, indicating where they
came from and where they are going to. I probably should have sketched
out the wiring diagrams as I completed routing each wire, but it can
still be done now without too much trouble since my forward top skin
is still off. Ok, I admit to a touch of laziness here, which is
enhanced by a growing anticipation of the first engine start and
flight, but I am having difficulty describing to my self exactly what
future scenario makes that wiring book a must have.
Go ahead and set me straight. Or hey, feel free to tell me "never did
it, never needed it" as well.
regards
erich weaver
|
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Mark Phillips in TN
Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN
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| Posted: Tue Mar 13, 2007 7:03 pm Post subject: wiring diagram benefits? |
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In a message dated 03/13/2007 11:36:15 AM Central Daylight Time, Erich_Weaver(at)URSCorp.com writes:
| Quote: | | "never did it, never needed it" |
...until you do and didn't! If you did a good job on the design & install, you likely never will need it, but 5 years from now, wouldn't it be handy to know what ya got when you go to upgrade to that spiffy new holographic cockpit?
Mark- RV-6A N51PW "Mojo", former industrial 'lectrician, confirmed Nuckollhead, and pretty anal when it comes to wiring diagrams, but YMMV, natcherly!
http://websites.expercraft.com/n51pw/index.php?q=log_entry&log_id=7604 fer example
AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com.
[quote][b]
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Jerry Cochran
Joined: 10 Jan 2006
Posts: 111
Location: Wilsonville, OR
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| Posted: Wed Mar 14, 2007 8:02 pm Post subject: wiring diagram benefits? |
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Just do it, you'll be happy you did, and may hate yourself if not I will do my first flight next week, and so far there have been 3 issues regarding electrical stuff which were a piece of cake to track down and fix because I took the trouble to do a 6 page diagram with Z11 as a base.
Here's the deal... I wired it last year, and if you think you'll remember all those pathways about 2 years after first flight, you have a lot better memory than myself.It was a mystery to me until I pulled out my handy-dandy wirebook... Voila!!! No problema!!!
HTH,
Jerry Cochran
| Quote: | Time: 09:33:56 AM PST US
Subject: AeroElectric-List: wiring diagram benefits?
From: Erich_Weaver(at)URSCorp.com
I may be asking for a beating here, but exactly why should I create
detailed wiring diagrams? I wired my RV-7A myself following the Z-13/8 |
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nuckollsr(at)cox.net
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| Posted: Sat Mar 17, 2007 3:13 pm Post subject: wiring diagram benefits? |
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At 12:01 AM 3/15/2007 -0400, you wrote:
| Quote: | Just do it, you'll be happy you did, and may hate yourself if not I will
do my first flight next week, and so far there have been 3 issues
regarding electrical stuff which were a piece of cake to track down and
fix because I took the trouble to do a 6 page diagram with Z11 as a base.
Here's the deal... I wired it last year, and if you think you'll remember
all those pathways about 2 years after first flight, you have a lot better
memory than myself.It was a mystery to me until I pulled out my
handy-dandy wirebook... Voila!!! No problema!!!
|
This doesn't have to be time consuming or expensive.
Do page per system drawings in pencil and keep a
Pink Pearl eraser handy for corrections. You can
do the drawings in a 3-ring notebook. When the
airplane is done, "fog" the penciled pages with
clear Krylon finish to "set" the pencil for longevity
that rivals ink.
Total time added to your task will be trivial in
the grand scheme of things. Further, as others have
suggested you'll be glad you did it a few years
hence. The wirebook can also cite component part numbers
to make spares procurement easier as well.
Another thing I've been doing for about the last
7 years or so is ordering parts and supplies as
much as possible over the 'net. When an order has
be submitted, you almost always get a screen dump
of the order that includes where you got the parts,
what the numbers are, how much they cost, etc. I
print these screens (or e-mail confirmations) to
pdf files using Adobe Acrobat (other pdf generators
may work as well). Name the file with a date-supplier
protocol like 70320B01_Digikey. This decodes to
Bob's first purchase on March 20, 2007 and placed with
Digikey.
When all these files get dumped into a purchasing
directory, I have a complete history of orders that
sort in date order and can be searched. It takes
seconds to record the order to a common data folder
and a few seconds longer to search later and find
where I purchased an MS21919 clamp or a DPX5050
pressure transducer.
When your airplane is done, you can print out these
files to paper, punch them and put them in the back
of your wirebook too. Takes mere minutes to collect
the information and offers fast access to tons of
maintenance data.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
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