Today's Message Index:
----------------------
1. 04:47 AM - Re: Re: Radio Buzz (Hal Benjamin)
2. 04:49 AM - Re: Double Trouble (Charlie England)
3. 07:32 AM - Re: Radio Buzz (Robert L. Nuckolls, III)
4. 07:52 AM - Re: Radio Buzz (Ross Home)
5. 09:07 AM - Re: Radio Buzz (Kelly McMullen)
6. 11:04 AM - Re: Radio Buzz (ARGOLDMAN@aol.com)
7. 11:05 AM - Re: Radio Buzz (ARGOLDMAN@aol.com)
8. 11:46 AM - Re: Radio Buzz (Robert L. Nuckolls, III)
9. 12:45 PM - Re: Radio Buzz (Ross Home)
10. 01:50 PM - Re: Young Aviators & B-25 intercom (jrevens)
11. 01:59 PM - Re: Re: Young Aviators & B-25 intercom (Bill)
12. 04:27 PM - Voltage reducer (Janet Amtmann)
13. 06:38 PM - Shopping at AirVenture (Art Zemon)
14. 07:23 PM - Re: Shopping at AirVenture (Kenneth Johnson)
15. 07:40 PM - Re: Shopping at AirVenture (C&K)
16. 07:58 PM - Re: Voltage reducer (user9253)
17. 09:17 PM - Re: Shopping at AirVenture (A R Goldman)
Message 1
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Subject: | Re: RE: Radio Buzz |
I have a handheld radio in my hanger that I listen to while doing my preflight.
Battery chargers for electronic devices often cause noise.
Hal Benjamin
RV4, Long Island, NY
Sent from my iPad
> On Jul 17, 2015, at 1:16 AM, Kelly McMullen <kellym@aviating.com> wrote:
>
>
> Excellent thought. I had squelch break of sorts on my SL30 until I realized it
came and went with the light switch. One florescent tube was causing its ballast
to put out a bunch of RFI. New tube, noise gone.
>
>> On 7/16/2015 6:20 PM, Dj Merrill wrote:
>>
>>> On 7/16/2015 6:19 PM, Ross Home wrote:
>>> My plane is not in a state that allows me to start the engine (wings are
>>> off) so this is occurring with just the master switch on. No strobes or
>>> landing lights on, just panel instruments on.
>>
>> Just a random thought, but is this inside your hangar? Is there
>> anything on in the hangar, like lights, a refrigerator, etc?
>>
>> The noise might not be coming from anything in the plane.
>>
>> -Dj
>
>
>
>
>
Message 2
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Subject: | Re: Double Trouble |
On Thu, Jul 16, 2015 at 10:38 PM, Bill Bradburry <bbradburry@verizon.net>
wrote:
> The last couple of days I have been getting duplicates of every msg from
> the Aeroelectric list. Is anyone else having this problem? I don
=99t think
> it is on my end since only the list emails are affected.
>
>
> Bill
>
>
It's probably a glitch with your ISP, or some intermediate transfer point
in the interwebs. :-) I've had similar things happen in the past, and they
typically resolve themselves in a few days.
Charlie
Message 3
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At 10:57 AM 7/16/2015, you wrote:
>I know that asking about the cause of a buzz in your radios is like
>asking a mechanic about a noise you hear when you are driving but
>since you are all here and know way more than me I will describe my
>situation and how I plan to proceed.
>
>Set-up
>RV-6A
>GX-60 Com
>SL-30 Com
>SL-15 Intercom
>Two
><http://www.aircraftspruce.com/catalog/avpages/comant122.php>COMANT
>VHF COMMUNICATIONS antenna mounted on the centerline of the belly
>(one below the seat, one below the baggage compartment)
>
>I am getting significant static like noise when I connect either
>radio to the front antenna.
This sounds like a radiated noise issue which is almost
never an issue with grounding or other installation
errors . . . it's usually some device that is not
designed to live in harmony on airplanes.
Find a hand-held radio. Adjust to unused frequency
and open the squelch so you can hear the background
'hiss'. Then use it to 'probe' about the various
devices on the airplane.
Hand-held vhf transceivers and 9v transistor am radios
have been quite useful for probing noise sources of
all stripe.
Also, conduct a power-down study. Pull all fuses/breakers
that power up the ship's accessories. If noise is gone,
replace fuses one at a time until the noise comes back.
Bob . . .
Message 4
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I will try this.
What is puzzling is that the antenna connection that leads to the rear
antenna is at the firewall about 18 inches and level with my GX-60. I can
easily unhook the GX-60 cable from the front antenna (which is under the
floor directly beneath the GX-60) and hook it to the rear antenna connection
which is at the same height as the GX-60 and the noise goes away. All of
the wires that the GX-60 cable passes are the same in either case except,
when it is connected to the front antenna, it crosses these wires at a 90
degree angle instead of running parallel to them when it goes the rear
antenna connection.
Like I said earlier, I switched the two antenna to see if one was bad with
no change.
I am using a ground block for all grounding as suggested by Bob and the
battery is attached to it.
This also occurred out of the hangar so it isn't noise being generated
outside of the airplane.
Thank you all
Ross
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: Friday, July 17, 2015 7:30 AM
Subject: Re: AeroElectric-List: Radio Buzz
At 10:57 AM 7/16/2015, you wrote:
I know that asking about the cause of a buzz in your radios is like asking a
mechanic about a noise you hear when you are driving but since you are all
here and know way more than me I will describe my situation and how I plan
to proceed.
Set-up
RV-6A
GX-60 Com
SL-30 Com
SL-15 Intercom
Two COMANT VHF COMMUNICATIONS
<http://www.aircraftspruce.com/catalog/avpages/comant122.php> antenna
mounted on the centerline of the belly (one below the seat, one below the
baggage compartment)
I am getting significant static like noise when I connect either radio to
the front antenna.
This sounds like a radiated noise issue which is almost
never an issue with grounding or other installation
errors . . . it's usually some device that is not
designed to live in harmony on airplanes.
Find a hand-held radio. Adjust to unused frequency
and open the squelch so you can hear the background
'hiss'. Then use it to 'probe' about the various
devices on the airplane.
Hand-held vhf transceivers and 9v transistor am radios
have been quite useful for probing noise sources of
all stripe.
Also, conduct a power-down study. Pull all fuses/breakers
that power up the ship's accessories. If noise is gone,
replace fuses one at a time until the noise comes back.
Bob . . .
Message 5
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Since you have ruled out external sources, it sort of points to the
front antenna cable. I thought you said you had tried swapping cables.
Try removing antenna from airframe, connecting it directly to radio and
see if there is noise.
I can't explain it, but I know of one case where noise was coming via
ground, and isolating the antenna from ground cured the problem. Perhaps
a ground loop between coax shield and the airframe ground.
On 7/17/2015 7:51 AM, Ross Home wrote:
>
> I will try this.
>
> What is puzzling is that the antenna connection that leads to the rear
> antenna is at the firewall about 18 inches and level with my GX-60. I
> can easily unhook the GX-60 cable from the front antenna (which is
> under the floor directly beneath the GX-60) and hook it to the rear
> antenna connection which is at the same height as the GX-60 and the
> noise goes away. All of the wires that the GX-60 cable passes are the
> same in either case except, when it is connected to the front antenna,
> it crosses these wires at a 90 degree angle instead of running
> parallel to them when it goes the rear antenna connection.
>
> Like I said earlier, I switched the two antenna to see if one was bad
> with no change.
>
> I am using a ground block for all grounding as suggested by Bob and
> the battery is attached to it.
>
> This also occurred out of the hangar so it isnt noise being generated
> outside of the airplane.
>
> Thank you all
>
> Ross
>
> *From:*owner-aeroelectric-list-server@matronics.com
> [mailto:owner-aeroelectric-list-server@matronics.com] *On Behalf Of
> *Robert L. Nuckolls, III
> *Sent:* Friday, July 17, 2015 7:30 AM
> *To:* aeroelectric-list@matronics.com
> *Subject:* Re: AeroElectric-List: Radio Buzz
>
> At 10:57 AM 7/16/2015, you wrote:
>
> I know that asking about the cause of a buzz in your radios is
> like asking a mechanic about a noise you hear when you are driving
> but since you are all here and know way more than me I will
> describe my situation and how I plan to proceed.
>
> Set-up
> RV-6A
> GX-60 Com
> SL-30 Com
> SL-15 Intercom
> Two COMANT VHF COMMUNICATIONS
> <http://www.aircraftspruce.com/catalog/avpages/comant122.php>
> antenna mounted on the centerline of the belly (one below the
> seat, one below the baggage compartment)
>
> I am getting significant static like noise when I connect either
> radio to the front antenna.
>
>
> This sounds like a radiated noise issue which is almost
> never an issue with grounding or other installation
> errors . . . it's usually some device that is not
> designed to live in harmony on airplanes.
>
> Find a hand-held radio. Adjust to unused frequency
> and open the squelch so you can hear the background
> 'hiss'. Then use it to 'probe' about the various
> devices on the airplane.
>
> Hand-held vhf transceivers and 9v transistor am radios
> have been quite useful for probing noise sources of
> all stripe.
>
> Also, conduct a power-down study. Pull all fuses/breakers
> that power up the ship's accessories. If noise is gone,
> replace fuses one at a time until the noise comes back.
>
>
> Bob . . .
>
> **
> **
> **
> **
> **
> **
> **
> *http://www.matronics.com/Navigator?AeroElectric-List*
> **
> **
> *http://forums.matronics.com*
> **
> **
> **
> **
> *http://www.matronics.com/contribution*
> **
> **
> http://www.matronics.com/contribution
Message 6
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Bob's idea is probably right, but with two basically identical antennas I
would vote for a problem with the problem antenna, probably the coax-
connector-or connection to the antenna or a faulty antenna, if it is store
bought. Connect your portable to each antenna to re re re varify that the front
antenna is indeed the one that is giving the problem. Then do a continuity
check to see if somewhere the cable has been kinked and is intermittently
shorting (move as much of it as you can around.
If the noise is coming from inside of the aircraft, shutting all things off
(with the exception of the errant radio and listening would probably be a
good first test. If quiet, turn on each separate one (disconnect them via
their fuses/CBs, not just their switches.
If it is coming from the hanger, merely reverse the location of the
aircraft and the problem may go to the other antenna. A better test is to take
the beast out of the hanger and try to duplicate the problem. My vote is the
antenna or its lead/connectors, etc.
By the way. communication waves are vertically polarized your antennas
are horizontally polarized. I dont know how much of a problem this is. That
is for others to comment about
Rich
In a message dated 7/17/2015 9:34:07 A.M. Central Daylight Time,
nuckolls.bob@aeroelectric.com writes:
At 10:57 AM 7/16/2015, you wrote:
I know that asking about the cause of a buzz in your radios is like asking
a mechanic about a noise you hear when you are driving but since you are
all here and know way more than me I will describe my situation and how I
plan to proceed.
Set-up
RV-6A
GX-60 Com
SL-30 Com
SL-15 Intercom
Two _COMANT VHF COMMUNICATIONS_
(http://www.aircraftspruce.com/catalog/avpages/comant122.php) antenna mounted on the centerline of the belly (one
below the seat, one below the baggage compartment)
I am getting significant static like noise when I connect either radio to
the front antenna.
This sounds like a radiated noise issue which is almost
never an issue with grounding or other installation
errors . . . it's usually some device that is not
designed to live in harmony on airplanes.
Find a hand-held radio. Adjust to unused frequency
and open the squelch so you can hear the background
'hiss'. Then use it to 'probe' about the various
devices on the airplane.
Hand-held vhf transceivers and 9v transistor am radios
have been quite useful for probing noise sources of
all stripe.
Also, conduct a power-down study. Pull all fuses/breakers
that power up the ship's accessories. If noise is gone,
replace fuses one at a time until the noise comes back.
Bob . . .
Message 7
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I just looked up your antenna-- forget the part of polarization in the last
post..It is possible that you have an infant mortality.
Rich
In a message dated 7/17/2015 9:34:07 A.M. Central Daylight Time,
nuckolls.bob@aeroelectric.com writes:
At 10:57 AM 7/16/2015, you wrote:
I know that asking about the cause of a buzz in your radios is like asking
a mechanic about a noise you hear when you are driving but since you are
all here and know way more than me I will describe my situation and how I
plan to proceed.
Set-up
RV-6A
GX-60 Com
SL-30 Com
SL-15 Intercom
Two _COMANT VHF COMMUNICATIONS_
(http://www.aircraftspruce.com/catalog/avpages/comant122.php) antenna mounted on the centerline of the belly (one
below the seat, one below the baggage compartment)
I am getting significant static like noise when I connect either radio to
the front antenna.
This sounds like a radiated noise issue which is almost
never an issue with grounding or other installation
errors . . . it's usually some device that is not
designed to live in harmony on airplanes.
Find a hand-held radio. Adjust to unused frequency
and open the squelch so you can hear the background
'hiss'. Then use it to 'probe' about the various
devices on the airplane.
Hand-held vhf transceivers and 9v transistor am radios
have been quite useful for probing noise sources of
all stripe.
Also, conduct a power-down study. Pull all fuses/breakers
that power up the ship's accessories. If noise is gone,
replace fuses one at a time until the noise comes back.
Bob . . .
Message 8
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At 11:05 AM 7/17/2015, you wrote:
>Since you have ruled out external sources, it sort of points to the
>front antenna cable. I thought you said you had tried swapping cables.
>Try removing antenna from airframe, connecting it directly to radio
>and see if there is noise.
>I can't explain it, but I know of one case where noise was coming
>via ground, and isolating the antenna from ground cured the problem.
>Perhaps a ground loop between coax shield and the airframe ground.
>
>On 7/17/2015 7:51 AM, Ross Home wrote:
>>I will try this.
>>
>>What is puzzling is that the antenna connection that leads to the
>>rear antenna is at the firewall about 18 inches and level with my
>>GX-60. I can easily unhook the GX-60 cable from the front antenna
>>(which is under the floor directly beneath the GX-60) and hook it
>>to the rear antenna connection which is at the same height as the
>>GX-60 and the noise goes away. All of the wires that the GX-60
>>cable passes are the same in either case except, when it is
>>connected to the front antenna, it crosses these wires at a 90
>>degree angle instead of running parallel to them when it goes the
>>rear antenna connection.
Routing of coax cables to antennas is NEVER
a component of received noise . . . in the
heavy iron we route coaxes where there is opportunity
and room. The whole idea behind the industry standard
practices for (1) limiting noise from antagonists,
(2) improving resistance to noise by judicious
design of potential victims and last (3) reducing
risk of over-whelming propagation path (mounting
an antenna under the cowl will probably pick up
ignition noise). When a noise coming in through
the receiver's antenna port is detected, placement
of the coax isn't even a distant finisher in the
quest for resolution.
Assuming you have paid due diligence to standard practices
for installing the two antennas then the fact that
the forward-most antenna seems to be the key propagation
port, then the noise source is most likely forward ON
the aircraft. If it were off the aircraft, both
antennas would hear it.
This problem has a lot in common with Col_Mustard-
did-it-in-the-library-with-a-rope . . . you gotta
gather all the clues available to you BEFORE picking
up hammers-n-saws . . . or screwdrivers.
Antennas don't go BAD in a manner that makes one
a source of noise while others are not. They either
work good . . . or they don't . . . but they're never
'noisy'. Start with a 'cold' panel and bring up
equipment one item at a time . . . then confirm
your preliminary findings with a sniffer receiver.
Only THEN will hammers, saws and screwdrivers
contribute to resolution of the problem.
Bob . . .
Message 9
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Thanks so much, Bob. I will do as you suggest when I get back out to the
hangar.
Just for my education. Since the location of the coax is not an issue, am I
to understand that the interference I am experiencing is being picked up by
the forward antenna itself?
In surfing the web about comm antenna, I read about the importance of having
good electrical bonding of the antenna to the aircraft ground.
The electrical bonding of the antennas to the aircraft skin is best
accomplished by direct metal-to metal contact of the antenna base to the
aircraft skin. To accomplish this, the aircraft paint in the mounting area
will need to be removed and the surface alodined to protect aluminum against
corrosion. An alternate method for providing electrical bonding is through
the mounting screws, which attach to a backing plate inside the aircraft
skin. Remove any interior paint in the area where the backing plate is
placed to assure a good ground. Coat this area with alodine to minimize
corrosion. To test the electrical bonding of the blade to the aircraft, a
reading of .003 ohms between the antenna base plate and ground should be
achieved.
I am using the second method and will have to check if my installation meets
the .003 ohm test. If the front antenna does not meet this, would this
cause a buzz or just degrade the performance of the antenna?
Ross
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: Friday, July 17, 2015 11:45 AM
Subject: Re: AeroElectric-List: Radio Buzz
At 11:05 AM 7/17/2015, you wrote:
Since you have ruled out external sources, it sort of points to the front
antenna cable. I thought you said you had tried swapping cables.
Try removing antenna from airframe, connecting it directly to radio and see
if there is noise.
I can't explain it, but I know of one case where noise was coming via
ground, and isolating the antenna from ground cured the problem. Perhaps a
ground loop between coax shield and the airframe ground.
On 7/17/2015 7:51 AM, Ross Home wrote:
I will try this.
What is puzzling is that the antenna connection that leads to the rear
antenna is at the firewall about 18 inches and level with my GX-60. I can
easily unhook the GX-60 cable from the front antenna (which is under the
floor directly beneath the GX-60) and hook it to the rear antenna connection
which is at the same height as the GX-60 and the noise goes away. All of
the wires that the GX-60 cable passes are the same in either case except,
when it is connected to the front antenna, it crosses these wires at a 90
degree angle instead of running parallel to them when it goes the rear
antenna connection.
Routing of coax cables to antennas is NEVER
a component of received noise . . . in the
heavy iron we route coaxes where there is opportunity
and room. The whole idea behind the industry standard
practices for (1) limiting noise from antagonists,
(2) improving resistance to noise by judicious
design of potential victims and last (3) reducing
risk of over-whelming propagation path (mounting
an antenna under the cowl will probably pick up
ignition noise). When a noise coming in through
the receiver's antenna port is detected, placement
of the coax isn't even a distant finisher in the
quest for resolution.
Assuming you have paid due diligence to standard practices
for installing the two antennas then the fact that
the forward-most antenna seems to be the key propagation
port, then the noise source is most likely forward ON
the aircraft. If it were off the aircraft, both
antennas would hear it.
This problem has a lot in common with Col_Mustard-
did-it-in-the-library-with-a-rope . . . you gotta
gather all the clues available to you BEFORE picking
up hammers-n-saws . . . or screwdrivers.
Antennas don't go BAD in a manner that makes one
a source of noise while others are not. They either
work good . . . or they don't . . . but they're never
'noisy'. Start with a 'cold' panel and bring up
equipment one item at a time . . . then confirm
your preliminary findings with a sniffer receiver.
Only THEN will hammers, saws and screwdrivers
contribute to resolution of the problem.
Bob . . .
http://www.matronics.com/Navigator?AeroElectric-List
http://www.matronics.com/contribution
Message 10
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Subject: | Re: Young Aviators & B-25 intercom |
With a tremendous amount of work by the EAA Mile High Chapter 43 Young Aviators
group, and many volunteers, the mock-up of a B-25 cockpit will be at KidVenture/Oshkosh
this year. I want to thank Bob Nuckolls for the part he played in generously
donating parts & his expertise to the intercom part of this tremendous
undertaking. Thank you again, Bob!!!
It is still somewhat a work in progress, but it looks very good, and a large group
of the kids & their parents, as well as other Chapter 43 volunteers will
be there to conduct tours and tell the B-25 story. They are a pretty excited and
proud bunch of young people!
--------
John Evens
Thorp T-18 N71JE (built & flying)
Kitfox SS7 N27JE (building)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=444883#444883
Message 11
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Subject: | Re: Young Aviators & B-25 intercom |
Well done John (both your work and the nod to Bob for his).
Bill
SF bay area
do not archive
On Fri, Jul 17, 2015 at 1:48 PM, jrevens <jrevens@comcast.net> wrote:
>
> With a tremendous amount of work by the EAA Mile High Chapter 43 Young
> Aviators group, and many volunteers, the mock-up of a B-25 cockpit will be
> at KidVenture/Oshkosh this year. I want to thank Bob Nuckolls for the part
> he played in generously donating parts & his expertise to the intercom part
> of this tremendous undertaking. Thank you again, Bob!!!
>
> It is still somewhat a work in progress, but it looks very good, and a
> large group of the kids & their parents, as well as other Chapter 43
> volunteers will be there to conduct tours and tell the B-25 story. They are
> a pretty excited and proud bunch of young people!
>
> --------
> John Evens
> Thorp T-18 N71JE (built & flying)
> Kitfox SS7 N27JE (building)
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=444883#444883
>
>
Message 12
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This is not aircraft related (but I do have an RV6) but is electronic
related. Many years ago I converted an old Porsche 356 from 6V to 12V.
There were no 12V windshield wiper motors available so I had to use the
original 6V wiper motor which drew about 5-10A. Speed was controlled with
a rheostat, but adding another dropping resistor generated heat and made
the speed control ineffective. Someone assembled a transistor circuit for
me that dropped the 12V supply to a constant 6V (independent of current
draw) and everything worked well. I am now restoring this car and this
device became lost. Does anyone of you electronic experts (maybe Bob N)
know of a circuit I can build or purchase a device that will give me the
constant 6V at 5 or 10A?
Jurgen Amtmann
Message 13
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Subject: | Shopping at AirVenture |
=0AFolks,=0A =0AI am building a BD-4C (4 place, high wing) and plan to buil
d the electrical system between this AirVenture and the next. If you were i
n my shoes, is there anything that you would buy at AirVenture this summer?
Tools? Wire? Etc?=0A =0AMy impression of the fly-mart is not great. And I
have not been bowled over by tremendous deals in past years, as I wandered
hangars A-D. But maybe I just don't know what I'm looking for so I figured
I would ask here.=0A =0AThanks,=0A -- Art Z.=0A =0A--[ http://CheerfulCu
rmudgeon.com/ ]( http://CheerfulCurmudgeon.com/ )"If I am not for myself, w
ho is for me? And if I am only for myself, what am I? And if not now, when?
" Hillel
Message 14
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Subject: | Re: Shopping at AirVenture |
Hi Art,You have to determine what you need for your airplane.=C2- Most ai
rcraft supplies companies will give a 10% discount on major purchases.=C2
- Take your order to several places and see where you get the best deal.
=C2-
On Friday, July 17, 2015 8:37 PM, Art Zemon <art@zemon.name> wrote:
Folks,=C2-I am building a BD-4C (4 place, high wing) and plan to build t
he electrical system between this AirVenture and the next. If you were in m
y shoes, is there anything that you would buy at AirVenture this summer? To
ols? Wire? Etc?=C2-My impression of the fly-mart is not great. And I have
not been bowled over by tremendous deals in past years, as I wandered hang
ars A-D. But maybe I just don't know what I'm looking for so I figured I wo
uld ask here.=C2-Thanks,=C2- =C2- -- Art Z.=C2---
http://CheerfulCurmudgeon.com/
"If I am not for myself, who is for me? And if I am only for myself, what a
m I? And if not now, when?" Hillel
Message 15
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Subject: | Re: Shopping at AirVenture |
The only real electrical score I ever made at OSH was for a used tefzel
wire stripper from one of the outside stalls.
Non aviation strippers nick the wire when used on thin tefzel insulation.
Ken
On 17/07/2015 9:37 PM, Art Zemon wrote:
>
> Folks,
>
> I am building a BD-4C (4 place, high wing) and plan to build the
> electrical system between this AirVenture and the next. If you were in
> my shoes, is there anything that you would buy at AirVenture this
> summer? Tools? Wire? Etc?
>
> My impression of the fly-mart is not great. And I have not been bowled
> over by tremendous deals in past years, as I wandered hangars A-D. But
> maybe I just don't know what I'm looking for so I figured I would ask
> here.
>
> Thanks,
>
> -- Art Z.
>
> --
> http://CheerfulCurmudgeon.com/
>
> /"If I am not for myself, who is for me? And if I am only for myself,
> what am I? And if not now, when?" Hillel/
>
> http://www.matronics.com/contribution
Message 16
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Subject: | Re: Voltage reducer |
Search for PWM Motor Speed Controller. Maybe something like this will work:
http://www.ebay.com/itm/9-60V-40A-DC-Motor-Speed-Control-PWM-HHO-RC-Controller-12V-24V-48V-1500W-MAX-/261421453931?pt=LH_DefaultDomain_0&hash=item3cddeed26b
The rated capacity of some items from China are exaggerated, so get 2 or 3 times
the expected load capacity.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=444901#444901
Message 17
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Subject: | Re: Shopping at AirVenture |
Art
The fly market,over the last sever years, with few exceptions can really be c
alled the flam market.
If your electrical installation is anything other than real basic get a good
quality automatic wire stripper (grabs the wire and strips it) make sure it
is for tefzel wire. Standard strippers that look the same will not cut the t
efzel smoothly--or at all
They are not cheap. I got mine from pegasus racing (a rv builder) comes with
a replacement set of cutters
The other thing you will need is a good ratchet type crimper for terminals
Additionally if you are going to use sub-d plugs get a crimped for the pins/
sockets
B&c might be a one stop shop for you and will be located in one of the main b
ooths
For your terminals use PIDG. And don't use hardware store types
If you can find a good used ratchet type terminal crimper that would probabl
y be ok as they don't wear much but I would stay away from a used stripper a
nd sub-d crimpr. Use machined pins
Other things to get are heat shrink tubing of various sizes
See what they have for wire marking
Be careful about the wire that is being offered
Make sure it is tefzel. Lots of places try to sell old stocks of obsolete w
ire
Just some thoughts
Rich
Sent from my iPhone
> On Jul 17, 2015, at 8:37 PM, Art Zemon <art@zemon.name> wrote:
>
> Folks,
>
> I am building a BD-4C (4 place, high wing) and plan to build the electrica
l system between this AirVenture and the next. If you were in my shoes, is t
here anything that you would buy at AirVenture this summer? Tools? Wire? Etc
?
>
> My impression of the fly-mart is not great. And I have not been bowled ove
r by tremendous deals in past years, as I wandered hangars A-D. But maybe I j
ust don't know what I'm looking for so I figured I would ask here.
>
> Thanks,
> -- Art Z.
>
> --
> http://CheerfulCurmudgeon.com/
>
> "If I am not for myself, who is for me? And if I am only for myself, what a
m I? And if not now, when?" Hillel
>
>
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>
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