Today's Message Index:
----------------------
1. 12:32 AM - Re: Wire specifications (Tony Babb)
2. 03:40 AM - 5000 mV reference battery (Jan de Jong)
3. 05:52 AM - Re: Re: Schematic drawing software (Harley)
4. 08:25 AM - Re: Wire specifications (Robert L. Nuckolls, III)
5. 08:39 AM - Switched hot bus (Rouault, Jason (Security Management))
6. 09:45 AM - Re: Wire specifications (Joe Ronco)
7. 09:47 AM - Re: Wire specifications (Matt Prather)
8. 10:11 AM - Re: Wire specifications (Hinde, Frank George (Corvallis))
9. 10:39 AM - Re: Wire specifications (Ernest Christley)
10. 10:52 AM - Re: Wire specifications (Ernest Christley)
11. 11:45 AM - Re: Wire specifications (Kevin Horton)
12. 12:23 PM - Re: Wire specifications (Matt Prather)
13. 01:04 PM - Re: Switched hot bus (Carl Morgan)
14. 03:57 PM - Simple question re the B&C Contactors (MauleDriver)
15. 03:58 PM - Simple question re the B&C Contactors (MauleDriver)
16. 05:39 PM - Fuse panel location (david stroud)
17. 05:51 PM - Sennheiser tip power (David Chalmers)
18. 08:45 PM - Re: Schematic drawing software (Terry Phillips)
19. 09:01 PM - "scratchy" transmission (luckymacy@comcast.net (lucky))
20. 09:01 PM - "scratchy" transmission (luckymacy@comcast.net (lucky))
21. 10:01 PM - Re: "scratchy" transmission (jetboy)
Message 1
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| Subject: | Wire specifications |
In surfing the web some I found this
http://etd-submit.etsu.edu/etd/theses/available/etd-0714104-142243/unrestric
ted/KiptinessS080904f.pdf
On page 100 it seems to say that TKT and Mil Spec 22759 are equivalent.
Usual disclaimers - I'm electrically challenged etc.
Tony
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Joe Ronco
Sent: Tuesday, October 02, 2007 8:46 PM
Subject: RE: AeroElectric-List: Wire specifications
BOB: I don't know anything about aircraft wire but in surfing the net I
found this link. Comments?
http://www.vision.net.au/%7Eapaterson/aviation/wire_types.htm
Joe R
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: Tuesday, October 02, 2007 10:00 PM
Subject: Re: AeroElectric-List: Wire specifications
--> <nuckolls.bob@cox.net>
At 06:35 PM 10/2/2007 -0400, you wrote:
>
>I am building a Dream Aircraft Tundra (4 place aluminum bushplane) and
>am confused as to what wire to buy.
>
>Most wire comparisons list TKT as being the only thing that is
>wonderful. However, most companies seem to be selling Tefzel for
>homebuilt aircraft.
>
>Is there a convenient source of reasonable lengths of TKT wire ?
Why do you want TKT? M22759 Tefzel has been the wire
of choice in Wichita for tens of thousands of airplanes
for about 25 years.
Bob . . .
----------------------------------------
( "Problems are the price of progress. )
( Don't bring me anything but trouble. )
( Good news weakens me." )
( -Charles F. Kettering- )
----------------------------------------
Message 2
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| Subject: | 5000 mV reference battery |
FYI.
The combination of
- Intersil X60008DIS8-50 5000 mV 1 mV, 0.5 uA, max 10 mA, SOIC-8 and
- two 3 V lithium buttons
makes a long life (decades) 5000 mV reference battery.
I made 4 and the actual spread was 3 mV.
Digikey had in stock for < US$ 7 but not anymore apparently ("call").
Cheers,
Jan de Jong
Message 3
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| Subject: | Re: Schematic drawing software |
Morning, Terry...
I'm a happy Vcadd user, but glad to help out if I can, as I started with
Turbocad myself a few years ago. I preferred the two letter commands in
Vcadd, allowing me to keep the mouse moving with my right hand while
while changing commands with my left, rather than having to open and
close menus that Turbocad used at the time.
Anyway, a quick search on Google showed that Turbocad charges $49.95 for
their tutorials now, but I found this on the Cad Digest website:
www.alfredky.com/TCAD/tutorial1.php
Haven't tried it, but it's a start...
Harley Dixon
Long EZ N28EZ
Hangar 29, Airport
Canandaigua, NY
------------------------------------------------------------------------
Terry Phillips wrote:
>
> As suggested, I have purchased a copy of TurboCAD Deluxe 10.2 on Ebay and it
does a fine job of opening Bob's .dwg files.
>
> Unfortunately, I have no CAD experience, and don't know how to use TurboCAD.
The TurboCAD interface has an Internet link for Tutorials:
>
> http://www.turbocad.com/tutorials
>
> Unfortunately that web page doesn't exist. I have searched the IMSI website for
tutorials, but cannot find anything. I note that there is a Tutorial folder
in the TurboCAD folder that loaded with the program. But w/o the tutorial narrative,
I don't know what to do with these sample drawing files.
>
> Does anyone know where I can find the tutorial files that (apparently) used to
be available from the TurboCAD people? If I could just find them once, I could
use the FireFox Scrapbook utility to make my own copy of the tutorial files.
>
> Thank for any help you can give me.
>
> Terry Phillips
> ttp44~at~rkymtn.net
> Corvallis MT
> 601XL/Jab 3300 slow build kit - Rudder done--finally; working on the stab
>
> --------
> Terry Phillips
> Corvallis, MT
> ttp44<at>rkymtn.net
> Hope to begin building in '06
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=137758#137758
>
>
>
Message 4
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| Subject: | Wire specifications |
>Subject: RE: AeroElectric-List: Wire specifications
>
>
>
>BOB: I don't know anything about aircraft wire but in surfing the net I
>found this link. Comments?
>
>http://www.vision.net.au/%7Eapaterson/aviation/wire_types.htm
>
>Joe R
Oh yeah, THAT link.
Discussing wire types is taking a drink from the
firehose. There are as many recipes as there are
chefs . . . each having the fondest wish that
his/her dish becomes the worldwide favorite.
Then there are wires designed for specific
applications for industry or aerospace intended
for use in situations we'll never see on our
airplanes . . . nor could we afford to buy the
wire even if we wanted it.
I took the FAA to task some years ago about
the extensive list of "suggested and/or semi
approved" wire materials in AC43.13. Obviously
intended to aid technicians and mechanics in the
field. While the data presented in the tables
(and in the link you cited above) are mostly
correct factually, it's like asking someone
for whom English is a second language to
do the assembly manual for a tricycle and
then suggesting that the 10-volume set Oxford
dictionary would be a good resource. . .
815f27e.jpg
The majority of wired types suggested in AC43-13 would
be hard for ME to get and I do business with the world's
premier suppliers of the stuff. To offer that 'comprehensive'
list was a waste of both the writer's and the reader's time. Of
course the writer was on the taxpayer's payroll.
Allow me to suggest that M22759 Tefzel from the popular
suppliers to the OBAM aircraft industry is the finest
wire we've used in GA aircraft to date, is widely available
and reasonably priced. Praying over the Concise Dictionary
for Wire is probably not a good use of your time beyond
expanding your intellectual horizons on the universe of
wire types.
Bob . . .
Message 5
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| Subject: | Switched hot bus |
All-
I am currently working on my wiring diagram for my FADEC equipped plane. I
will be using a slightly modified version of the Z-14 diagram. I found a
fellow builder with the same setup as me and got a hold of his wiring diagr
am. Attached is a snippet of that diagram. My question pertains to the gu
arded switch for FADEC bus #1 (there is a similar setup for FADEC bus #2).
The diagram is showing 4 AWG wire between the battery and guarded switch.
Shouldn't there be a relay or something here?
Thanks,
Jason
[cid:image001.png@01C805A0.AE462D00]
Message 6
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| Subject: | Wire specifications |
Thanks Bob. I now get the picture (I think) and won't spend any more
time on this topic.
Joe R
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Robert L. Nuckolls, III
Sent: Wednesday, October 03, 2007 10:25 AM
Subject: RE: AeroElectric-List: Wire specifications
>Subject: RE: AeroElectric-List: Wire specifications
>
>
>
>BOB: I don't know anything about aircraft wire but in surfing the net I
>found this link. Comments?
>
>http://www.vision.net.au/%7Eapaterson/aviation/wire_types.htm
>
>Joe R
Oh yeah, THAT link.
Discussing wire types is taking a drink from the
firehose. There are as many recipes as there are
chefs . . . each having the fondest wish that
his/her dish becomes the worldwide favorite.
Then there are wires designed for specific
applications for industry or aerospace intended
for use in situations we'll never see on our
airplanes . . . nor could we afford to buy the
wire even if we wanted it.
I took the FAA to task some years ago about
the extensive list of "suggested and/or semi
approved" wire materials in AC43.13. Obviously
intended to aid technicians and mechanics in the
field. While the data presented in the tables
(and in the link you cited above) are mostly
correct factually, it's like asking someone
for whom English is a second language to
do the assembly manual for a tricycle and
then suggesting that the 10-volume set Oxford
dictionary would be a good resource. . .
815f27e.jpg
The majority of wired types suggested in AC43-13 would
be hard for ME to get and I do business with the world's
premier suppliers of the stuff. To offer that 'comprehensive'
list was a waste of both the writer's and the reader's time. Of
course the writer was on the taxpayer's payroll.
Allow me to suggest that M22759 Tefzel from the popular
suppliers to the OBAM aircraft industry is the finest
wire we've used in GA aircraft to date, is widely available
and reasonably priced. Praying over the Concise Dictionary
for Wire is probably not a good use of your time beyond
expanding your intellectual horizons on the universe of
wire types.
Bob . . .
Message 7
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| Subject: | Wire specifications |
Bob,
Would you also say that it's at least as important to install wire
correctly as it is to choose the correct insulation material? Certainly
many would say PVC insulation is evil and its use is suicidal/homicidal,
but a good many airplanes will (have) go(ne) to the bone yard with big
bundles of it, not because of wiring safety but because of airframe
fatigue life.. To me that says that it's possible to use wire with PVC
insulation, but today the incremental cost associated with upgrading to
Tefzel is low enough that it's worth the benefits of more robust
mechanicals.
Regards,
Matt-
>
>>Subject: RE: AeroElectric-List: Wire specifications
>>
>>
>>
>>BOB: I don't know anything about aircraft wire but in surfing the net I
>>found this link. Comments?
>>
>>http://www.vision.net.au/%7Eapaterson/aviation/wire_types.htm
>>
>>Joe R
>
> Oh yeah, THAT link.
>
> Discussing wire types is taking a drink from the
> firehose. There are as many recipes as there are
> chefs . . . each having the fondest wish that
> his/her dish becomes the worldwide favorite.
> Then there are wires designed for specific
> applications for industry or aerospace intended
> for use in situations we'll never see on our
> airplanes . . . nor could we afford to buy the
> wire even if we wanted it.
>
> I took the FAA to task some years ago about
> the extensive list of "suggested and/or semi
> approved" wire materials in AC43.13. Obviously
> intended to aid technicians and mechanics in the
> field. While the data presented in the tables
> (and in the link you cited above) are mostly
> correct factually, it's like asking someone
> for whom English is a second language to
> do the assembly manual for a tricycle and
> then suggesting that the 10-volume set Oxford
> dictionary would be a good resource. . .
>
> 815f27e.jpg
>
> The majority of wired types suggested in AC43-13 would
> be hard for ME to get and I do business with the world's
> premier suppliers of the stuff. To offer that 'comprehensive'
> list was a waste of both the writer's and the reader's time. Of
> course the writer was on the taxpayer's payroll.
>
> Allow me to suggest that M22759 Tefzel from the popular
> suppliers to the OBAM aircraft industry is the finest
> wire we've used in GA aircraft to date, is widely available
> and reasonably priced. Praying over the Concise Dictionary
> for Wire is probably not a good use of your time beyond
> expanding your intellectual horizons on the universe of
> wire types.
>
> Bob . . .
Message 8
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| Subject: | Wire specifications |
If you have ever (Like I have) had a wire short out behind the
instrument panel in your car that was not fused properly you will
certainly avoid PVC like the plague.
The rate the fire burns everything up and the thick accrid smoke it
produces would make such an event in an airplane life threatening!
Don't even think about it!
Frank
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Matt
Prather
Sent: Wednesday, October 03, 2007 9:47 AM
Subject: RE: AeroElectric-List: Wire specifications
--> <mprather@spro.net>
Bob,
Would you also say that it's at least as important to install wire
correctly as it is to choose the correct insulation material? Certainly
many would say PVC insulation is evil and its use is suicidal/homicidal,
but a good many airplanes will (have) go(ne) to the bone yard with big
bundles of it, not because of wiring safety but because of airframe
fatigue life.. To me that says that it's possible to use wire with PVC
insulation, but today the incremental cost associated with upgrading to
Tefzel is low enough that it's worth the benefits of more robust
mechanicals.
Regards,
Matt-
>
>>Subject: RE: AeroElectric-List: Wire specifications
>>
>>
>>
>>BOB: I don't know anything about aircraft wire but in surfing the net
>>I found this link. Comments?
>>
>>http://www.vision.net.au/%7Eapaterson/aviation/wire_types.htm
>>
>>Joe R
>
> Oh yeah, THAT link.
>
> Discussing wire types is taking a drink from the
> firehose. There are as many recipes as there are
> chefs . . . each having the fondest wish that
> his/her dish becomes the worldwide favorite.
> Then there are wires designed for specific
> applications for industry or aerospace intended
> for use in situations we'll never see on our
> airplanes . . . nor could we afford to buy the
> wire even if we wanted it.
>
> I took the FAA to task some years ago about
> the extensive list of "suggested and/or semi
> approved" wire materials in AC43.13. Obviously
> intended to aid technicians and mechanics in the
> field. While the data presented in the tables
> (and in the link you cited above) are mostly
> correct factually, it's like asking someone
> for whom English is a second language to
> do the assembly manual for a tricycle and
> then suggesting that the 10-volume set Oxford
> dictionary would be a good resource. . .
>
> 815f27e.jpg
>
> The majority of wired types suggested in AC43-13 would
> be hard for ME to get and I do business with the world's
> premier suppliers of the stuff. To offer that 'comprehensive'
> list was a waste of both the writer's and the reader's time. Of
> course the writer was on the taxpayer's payroll.
>
> Allow me to suggest that M22759 Tefzel from the popular
> suppliers to the OBAM aircraft industry is the finest
> wire we've used in GA aircraft to date, is widely available
> and reasonably priced. Praying over the Concise Dictionary
> for Wire is probably not a good use of your time beyond
> expanding your intellectual horizons on the universe of
> wire types.
>
> Bob . . .
Message 9
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| Subject: | Re: Wire specifications |
Joe Ronco wrote:
>
> BOB: I don't know anything about aircraft wire but in surfing the net I
> found this link. Comments?
>
> http://www.vision.net.au/%7Eapaterson/aviation/wire_types.htm
>
> Joe R
>
>
Wow! There's only ONE type of wire that is known to be safe. All of
those planes flying millions of miles year in and year out are just
ticking time-bombs, waiting for a wire to explode and send them crashing
into the seas. Luckily, there's someone with demonstrable proof of all
the danger we've faced for the last 4 decades.
Message 10
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| Subject: | Re: Wire specifications |
Matt Prather wrote:
>
> Bob,
>
> Would you also say that it's at least as important to install wire
> correctly as it is to choose the correct insulation material? Certainly
> many would say PVC insulation is evil and its use is suicidal/homicidal,
> but a good many airplanes will (have) go(ne) to the bone yard with big
> bundles of it, not because of wiring safety but because of airframe
> fatigue life.. To me that says that it's possible to use wire with PVC
> insulation, but today the incremental cost associated with upgrading to
> Tefzel is low enough that it's worth the benefits of more robust
> mechanicals.
>
>
>
Hear! Hear!
Call up Wiremasters. The sell in bulk and don't mind homebuilders.
I don't have their number or my receipt handy, but I think it was about
$150 I spent. I got enough spools of multi-colored, tinned-copper
Tefzel to wire my whole airplane and have enough left over to do most of
the next. I may have been able to find quality PVC for less, but I
would probably had to go surplus. I bought 100' spools of 22AWG (red,
green, white, black), 20AWG (red, green, white, black), 18AWG (red,
green, white, black), 16AWG(white), 12AWG(white). I also got 50' spools
of 8AWG(white) and 4AWG(white). That covers everything but the battery
cable, which I covered with welding cable.
The multi-color isn't an absolute need, but is nice to have. It cuts
down on some of the labeling requirements, especially when bundles of
related wires are twisted. Just chuck one end in the drill, pinch the
other end and squeeze the trigger until the bundles starts shrinking.
For instance, the magnetometer connects to the Dynon EFIS with a power,
ground and two signal lines. Red, black, white and green (respectively)
and it doesn't really need a label at all; though it does get a big
"magnetometer" sticker for good measure.
The rack of wire is incredibly useful when the time comes. Just run the
wires and not worry about estimating how much of each is needed. It's a
good item for a builder group to have. Pay for what you use, and then
pass it on to the next guy. Reload with a multi-hundred foot spool when
one runs out.
Message 11
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| Subject: | Re: Wire specifications |
A coworker had an electrical fire behind the dash of his BMW. The smoke was so
thick and acrid that he was unable to keep his eyes open. Fortunately it occurred
immediately after start while the car was stopped. He turned off the key,
opened the door, rolled out onto the ground and crawled away. He was very,
very glad he was not moving when this occurred, because he is convinced he would
not have been able to see to control the car.
Kevin Horton
On Wed, 3 Oct 2007 17:08:02 -0000
"Hinde, Frank George (Corvallis)" <frank.hinde@hp.com> wrote:
>
> If you have ever (Like I have) had a wire short out behind the
> instrument panel in your car that was not fused properly you will
> certainly avoid PVC like the plague.
>
> The rate the fire burns everything up and the thick accrid smoke it
> produces would make such an event in an airplane life threatening!
>
> Don't even think about it!
>
> Frank
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Matt
> Prather
> Sent: Wednesday, October 03, 2007 9:47 AM
> To: aeroelectric-list@matronics.com
> Subject: RE: AeroElectric-List: Wire specifications
>
> --> <mprather@spro.net>
>
> Bob,
>
> Would you also say that it's at least as important to install wire
> correctly as it is to choose the correct insulation material? Certainly
> many would say PVC insulation is evil and its use is suicidal/homicidal,
> but a good many airplanes will (have) go(ne) to the bone yard with big
> bundles of it, not because of wiring safety but because of airframe
> fatigue life.. To me that says that it's possible to use wire with PVC
> insulation, but today the incremental cost associated with upgrading to
> Tefzel is low enough that it's worth the benefits of more robust
> mechanicals.
>
>
> Regards,
>
> Matt-
>
>
> >
> >>Subject: RE: AeroElectric-List: Wire specifications
> >>
> >>
> >>
> >>BOB: I don't know anything about aircraft wire but in surfing the net
> >>I found this link. Comments?
> >>
> >>http://www.vision.net.au/%7Eapaterson/aviation/wire_types.htm
> >>
> >>Joe R
> >
> > Oh yeah, THAT link.
> >
> > Discussing wire types is taking a drink from the
> > firehose. There are as many recipes as there are
> > chefs . . . each having the fondest wish that
> > his/her dish becomes the worldwide favorite.
> > Then there are wires designed for specific
> > applications for industry or aerospace intended
> > for use in situations we'll never see on our
> > airplanes . . . nor could we afford to buy the
> > wire even if we wanted it.
> >
> > I took the FAA to task some years ago about
> > the extensive list of "suggested and/or semi
> > approved" wire materials in AC43.13. Obviously
> > intended to aid technicians and mechanics in the
> > field. While the data presented in the tables
> > (and in the link you cited above) are mostly
> > correct factually, it's like asking someone
> > for whom English is a second language to
> > do the assembly manual for a tricycle and
> > then suggesting that the 10-volume set Oxford
> > dictionary would be a good resource. . .
> >
> > 815f27e.jpg
> >
> > The majority of wired types suggested in AC43-13 would
> > be hard for ME to get and I do business with the world's
> > premier suppliers of the stuff. To offer that 'comprehensive'
> > list was a waste of both the writer's and the reader's time. Of
> > course the writer was on the taxpayer's payroll.
> >
> > Allow me to suggest that M22759 Tefzel from the popular
> > suppliers to the OBAM aircraft industry is the finest
> > wire we've used in GA aircraft to date, is widely available
> > and reasonably priced. Praying over the Concise Dictionary
> > for Wire is probably not a good use of your time beyond
> > expanding your intellectual horizons on the universe of
> > wire types.
> >
> > Bob . . .
>
>
>
>
>
Message 12
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| Subject: | Re: Wire specifications |
Danged BMW's and their electrical problems! Being a former BMW owner, I
can attest to the fact that their electrical systems were not built to
Aeroelectric standards... :) While I loved the way my '96 328i drove -
economy, handling, speed (when it ran properly), I finally got disgusted
with the string of expensive to fix issues the car had.
At least if your friend had been rolling down the road when the failure
occurred, there would have been airflow available to evacuate the smoke.
Matt-
> <khorton01@rogers.com>
>
> A coworker had an electrical fire behind the dash of his BMW. The smoke
> was so thick and acrid that he was unable to keep his eyes open.
> Fortunately it occurred immediately after start while the car was stopped.
> He turned off the key, opened the door, rolled out onto the ground and
> crawled away. He was very, very glad he was not moving when this
> occurred, because he is convinced he would not have been able to see to
> control the car.
>
> Kevin Horton
>
> On Wed, 3 Oct 2007 17:08:02 -0000
> "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com> wrote:
>
>> (Corvallis)" <frank.hinde@hp.com>
>>
>> If you have ever (Like I have) had a wire short out behind the
>> instrument panel in your car that was not fused properly you will
>> certainly avoid PVC like the plague.
>>
>> The rate the fire burns everything up and the thick accrid smoke it
>> produces would make such an event in an airplane life threatening!
>>
>> Don't even think about it!
>>
>> Frank
>>
>> -----Original Message-----
>> From: owner-aeroelectric-list-server@matronics.com
>> [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Matt
>> Prather
>> Sent: Wednesday, October 03, 2007 9:47 AM
>> To: aeroelectric-list@matronics.com
>> Subject: RE: AeroElectric-List: Wire specifications
>>
>> --> <mprather@spro.net>
>>
>> Bob,
>>
>> Would you also say that it's at least as important to install wire
>> correctly as it is to choose the correct insulation material? Certainly
>> many would say PVC insulation is evil and its use is suicidal/homicidal,
>> but a good many airplanes will (have) go(ne) to the bone yard with big
>> bundles of it, not because of wiring safety but because of airframe
>> fatigue life.. To me that says that it's possible to use wire with PVC
>> insulation, but today the incremental cost associated with upgrading to
>> Tefzel is low enough that it's worth the benefits of more robust
>> mechanicals.
>>
>>
>> Regards,
>>
>> Matt-
>>
>>
>> >
>> >>Subject: RE: AeroElectric-List: Wire specifications
>> >>
>> >>
>> >>
>> >>BOB: I don't know anything about aircraft wire but in surfing the net
>> >>I found this link. Comments?
>> >>
>> >>http://www.vision.net.au/%7Eapaterson/aviation/wire_types.htm
>> >>
>> >>Joe R
>> >
>> > Oh yeah, THAT link.
>> >
>> > Discussing wire types is taking a drink from the
>> > firehose. There are as many recipes as there are
>> > chefs . . . each having the fondest wish that
>> > his/her dish becomes the worldwide favorite.
>> > Then there are wires designed for specific
>> > applications for industry or aerospace intended
>> > for use in situations we'll never see on our
>> > airplanes . . . nor could we afford to buy the
>> > wire even if we wanted it.
>> >
>> > I took the FAA to task some years ago about
>> > the extensive list of "suggested and/or semi
>> > approved" wire materials in AC43.13. Obviously
>> > intended to aid technicians and mechanics in the
>> > field. While the data presented in the tables
>> > (and in the link you cited above) are mostly
>> > correct factually, it's like asking someone
>> > for whom English is a second language to
>> > do the assembly manual for a tricycle and
>> > then suggesting that the 10-volume set Oxford
>> > dictionary would be a good resource. . .
>> >
>> > 815f27e.jpg
>> >
>> > The majority of wired types suggested in AC43-13 would
>> > be hard for ME to get and I do business with the world's
>> > premier suppliers of the stuff. To offer that 'comprehensive'
>> > list was a waste of both the writer's and the reader's time. Of
>> > course the writer was on the taxpayer's payroll.
>> >
>> > Allow me to suggest that M22759 Tefzel from the popular
>> > suppliers to the OBAM aircraft industry is the finest
>> > wire we've used in GA aircraft to date, is widely available
>> > and reasonably priced. Praying over the Concise Dictionary
>> > for Wire is probably not a good use of your time beyond
>> > expanding your intellectual horizons on the universe of
>> > wire types.
>> >
>> > Bob . . .
>>
>>
>>
>>
>>
>
>
Message 13
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| Subject: | Switched hot bus |
Hi Jason,
I'm guessing that is a typo. The ECUs require about 7amps if I recall
(although I don't know if that is each or both), HSA / SSA are low level
signal elements - being real generous I don't think more than 15 ish amps
will be required for continuous duty. Obviously depending on wire length,
something like AWG 14 should be in the ball park.
Now the question of will the switch handle that current - different
problem...
HTH,
Carl
--
ZK-VII - RV 7A QB - finishing? - New Zealand
http://www.rvproject.gen.nz/
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Rouault,
Jason (Security Management)
Sent: Thursday, 4 October 2007 4:37 a.m.
To: aeroelectric-list@matronics.com
Subject: AeroElectric-List: Switched hot bus
All
I am currently working on my wiring diagram for my FADEC equipped plane.
I will be using a slightly modified version of the Z-14 diagram. I found a
fellow builder with the same setup as me and got a hold of his wiring
diagram. Attached is a snippet of that diagram. My question pertains to
the guarded switch for FADEC bus #1 (there is a similar setup for FADEC bus
#2). The diagram is showing 4 AWG wire between the battery and guarded
switch. Shouldnt there be a relay or something here?
Thanks,
Jason
Message 14
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| Subject: | Simple question re the B&C Contactors |
It's apparent to me that the jumper(2) and the diode(s) on the S701-1
and -2 contactors can be shifted between terminals to reverse the
functions of same terminals.
Can someone please confirm that? Thanks.
Bill "wiring an RV10" Watson
Message 15
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| Subject: | Simple question re the B&C Contactors |
It's apparent to me that the jumper(2) and the diode(s) on the S701-1
and -2 contactors can be shifted between terminals to reverse the
functions of same terminals.
Can someone please confirm that? Thanks.
Bill "wiring an RV10" Watson
Message 16
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| Subject: | Fuse panel location |
Hello to all. I'm new here on the list and have a question
about locating my fuse panel.
My older version of the AeroElectric connection and even books
by Tony Bengelis suggest that an intelligent choice for a fuse panel
location could indeed be farther than the reach of the pilot, since, if
the fuse blew there is little likelyhood of inflight repair to the
offending part anyway. This scenario is assuming good choices
have been made for wire and fuse sizing, length of travel etc.
and that certain circuits might need pullable breakers front and
center anyway.
Although the Fairchild 51 is a large plane, the panel is relatively small
and I'm trying to keep things simple and as authentic looking as
possible. My choice for the fuse panel location would in fact be about
12' behind the pilots seat in the "mechanical" room housing batteries
and the engine air start system.
Any comments to the pros and cons would be much appreciated.
David Stroud Ottawa, Canada
C-FDWS Christavia ( 400+ hrs. and no sparks )
Fairchild 51 under construction
Message 17
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| Subject: | Sennheiser tip power |
Does anyone know anything about the Sennheiser tip power system? It is
installed in my Diamond and I believe provides power to Sennheiser ANR
headsets using the tip of the microphone plug. I want to use Bose ship
powered headsets and rather than ripping the sockets out and replacing with
Bose sockets I was thinking I could make an adapter.
Does the Sennheiser microphone have an extra conductor or is it just a
regular jack and they use some kind of dc isolation to tap off the power
from the mic or ptt line?
Where can I find more info on the system?
Is there a source for Sennheiser to Bose adapters?
Thanks
Dave Chalmers
Redmond, WA
Message 18
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| Subject: | Re: Schematic drawing software |
Thanks, Harley
I had already looked at the tutorial file you posted. Unfortunately, it seems to
be about lighting for viewing 3-d objects. What I am hoping for is a tutorial
on basic 2-d drawing so I can modify and adapt Bob's schematics.
I'd just as soon avoid paying 5x as much to IMSI for the tutorial as I paid for
the software in the 1st place. Plus, I would presume that the tutorial is for
the current version, 14, as opposed to version 10 that I purchased. the version
might not make any difference, but I don't know how to find out w/o paying
$50.
Terry
--------
Terry Phillips
Corvallis, MT
ttp44<at>rkymtn.net
Hope to begin building in '06
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=137997#137997
Message 19
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| Subject: | "scratchy" transmission |
I noticed Van's is now selling a radio monitor so you can hear you transmission. http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1191469174-304-279&browse=new&product=radio-monitor
One of the descriptions says to be able to check for 'scratchy' transmission.
Well, 2 flights ago people started to tell me my transmissions were becoming scratchy
once the engine is running and the range is short but OK prior to engine
start even though the intercom continues to work like a champ all the time
and I can still hear others quite well and from a long distance regardless of
what else is on or off that I can control with respect to avionics and engine.
Anyone have enough hands on experience to know what the most probable causes
of that are? I have tried the following with no luck:
changed RG400 cables between TX and Antenna, tried to transmit with different headsets
and from both pilot/copilot positions, ensured all the ground connectors
FWF and in the avionics area appear to be 'normal', ensured the headset jacks
were still snug and no obvious connector problems, and checked the antenna
inside the plane and outside the plane. I'd have swapped radios if one was available.
my radio is an XCOM760
<html><body>
<DIV>I noticed Van's is now selling a radio monitor so you can hear you transmission. <A href="http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1191469174-304-279&browse=new&product=radio-monitor">http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1191469174-304-279&browse=new&product=radio-monitor</A></DIV>
<DIV> </DIV>
<DIV>One of the descriptions says to be able to check for 'scratchy' transmission.
Well, 2 flights ago people started to tell me my transmissions were
becoming scratchy once the engine is running and the range is short but OK
prior to engine start even though the intercom continues to work like a
champ all the time and I can still hear others quite well and from a long distance
regardless of what else is on or off that I can control with respect to
avionics and engine. Anyone have enough hands on experience to know what
the most probable causes of that are? I have tried the following with no
luck:</DIV>
<DIV> </DIV>
<DIV>changed RG400 cables between TX and Antenna, tried to transmit with different
headsets and from both pilot/copilot positions, ensured all the ground connectors FWF
and in the avionics area appear to be 'normal', ensured the headset
jacks were still snug and no obvious connector problems, and checked the
antenna inside the plane and outside the plane. I'd have swapped radios
if one was available.</DIV>
<DIV> </DIV>
<DIV>my radio is an XCOM760</DIV>
<pre><b><font size=2 color="#000000" face="courier new,courier">
</b></font></pre></body></html>
Message 20
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| Subject: | "scratchy" transmission |
I noticed Van's is now selling a radio monitor so you can hear you transmission. http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1191469174-304-279&browse=new&product=radio-monitor
One of the descriptions says to be able to check for 'scratchy' transmission.
Well, 2 flights ago people started to tell me my transmissions were becoming scratchy
once the engine is running and the range is short but OK prior to engine
start even though the intercom continues to work like a champ all the time
and I can still hear others quite well and from a long distance regardless of
what else is on or off that I can control with respect to avionics and engine.
Anyone have enough hands on experience to know what the most probable causes
of that are? I have tried the following with no luck:
changed RG400 cables between TX and Antenna, tried to transmit with different headsets
and from both pilot/copilot positions, ensured all the ground connectors
FWF and in the avionics area appear to be 'normal', ensured the headset jacks
were still snug and no obvious connector problems, and checked the antenna
inside the plane and outside the plane. I'd have swapped radios if one was available.
my radio is an XCOM760
<html><body>
<DIV>I noticed Van's is now selling a radio monitor so you can hear you transmission. <A href="http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1191469174-304-279&browse=new&product=radio-monitor">http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1191469174-304-279&browse=new&product=radio-monitor</A></DIV>
<DIV> </DIV>
<DIV>One of the descriptions says to be able to check for 'scratchy' transmission.
Well, 2 flights ago people started to tell me my transmissions were
becoming scratchy once the engine is running and the range is short but OK
prior to engine start even though the intercom continues to work like a
champ all the time and I can still hear others quite well and from a long distance
regardless of what else is on or off that I can control with respect to
avionics and engine. Anyone have enough hands on experience to know what
the most probable causes of that are? I have tried the following with no
luck:</DIV>
<DIV> </DIV>
<DIV>changed RG400 cables between TX and Antenna, tried to transmit with different
headsets and from both pilot/copilot positions, ensured all the ground connectors FWF
and in the avionics area appear to be 'normal', ensured the headset
jacks were still snug and no obvious connector problems, and checked the
antenna inside the plane and outside the plane. I'd have swapped radios
if one was available.</DIV>
<DIV> </DIV>
<DIV>my radio is an XCOM760</DIV>
<pre><b><font size=2 color="#000000" face="courier new,courier">
</b></font></pre></body></html>
Message 21
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| Subject: | Re: "scratchy" transmission |
One of the features built into the Xcom is that both mic inputs are live when any
ptt is operated.
It causes noisy radio transmissions whenever there is cockpit noise (entering the
other mic) usually in flight.
Efforts to have the manufacturer correct this issue are unresolved, so, typically
if you have this issue you will need to do a workaround with external wiring
or use an alternative radio.
Ralph
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=138011#138011
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