Today's Message Index:
----------------------
0. 12:20 AM - Fund Raiser List of Contributors - Please Make A Contribution Today! (Matt Dralle)
1. 03:05 AM - Z-13 and SD-8 (LINDA WALKER)
2. 07:48 AM - Re: Need 1,2 & 3 amp fuses ()
3. 08:37 AM - Vx Aviation Announces Free Shipping (Vernon Little)
4. 09:43 AM - crimp connectors with built-in shrink tubing? (Chris Johnston)
5. 10:34 AM - Re: crimp connectors with built-in shrink tubing? (Robert L. Nuckolls, III)
6. 10:43 AM - Re: Z-13 and SD-8 (Robert L. Nuckolls, III)
7. 10:44 AM - Re: Mechanical noise cancellation experiment (Robert L. Nuckolls, III)
8. 06:33 PM - Re: crimp connectors with built-in shrink tubing? (Sam Chambers)
9. 07:39 PM - Crimp connectors with built-in shrink tubing? (Robert L. Nuckolls, III)
Message 0
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Fund Raiser List of Contributors - Please Make A Contribution |
Today!
Each year at the end of the List Fund Raiser, I post a message acknowledging everyone
that so generously made a Contribution to support the Lists. Its sort of
my way of publicly thanking everyone that took a minute to show their appreciation
for the Lists.
Won't you take a moment and assure that your name is on that List of Contributors
(LOC)? As a number of members have pointed out over the years, the List seems
at least - if not a whole lot more - valuable as a building/flying/recreating/entertainment
tool as your typical magazine subscription!
Please take minute and assure that your name is on this year's LOC! Show others
that you appreciate the Lists. Making a Contribution to support the Lists is
fast and easy using your Credit card or Paypal on the Secure Web Site:
http://www.matronics.com/contribution
or by dropping a personal check in the mail to:
Matt Dralle / Matronics
PO Box 347
Livermore CA 94551-0347
I would like to thank everyone that has so generously made a Contribution thus
far in this year's List Fund Raiser! Remember that its YOUR support that keeps
these Lists going and improving! Don't forget to include a little comment about
how the Lists have helped you!
Best regards,
Matt Dralle
Matronics Email List Administrator
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Bob.
> If the rectifier/regulator were inadequately heat-sinked, it could
have caused internal damage at some point in the flight.That's about the
only part of the SD-8 system that's vulnerable.
My system uses the stainless steel firewall as a heat sink... is that
sufficient? Do I need conductive paste(?) between it and the firewall?
Any other suggestions?
> Check with a voltmeter that you have AC voltage coming in while
the engine is running and that the disconnect relay is closing.
So far have only checked the disconnect relay is working ok, it is, and
the DC output at the relay. This varied from 12.9 to 12.3 volts
depending on load. Are these the figures you'd expect?
I can't seem to find what the SD-8s dc output should be on any website
pages! I'd have hoped/thought it would be similar to the main
alternators approx 14.7v, is this correct?
Would my results indicate a regulator fault, or should I still check the
ac output?
Any help much appreciated.
Kind regards
Patrick C Elliott, Reigate, Surrey, England. G-LGEZ
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Need 1,2 & 3 amp fuses |
I am not an EE either, but I read directions pretty well (that makes me
sound smart J). If Dynon says to use a 1 or 3 amp fuse, that's what I
use. With respect to the wire size, who cares, I am protecting the
equipment first and the wire second. Remember, the wire size is max
rating, not min rating.
We are not talking about 550 kv lines here. I'm not worried about
voltage drop across five feet of #22 wire. Just because a wire can
handle 10 amps, doesn't mean one should subject a Dynon to 10 amps of
unprotected power.
If ones takes the approach of just throwing fuses at wire sizes you will
become good friends with the radio shop attending to smoking radios.
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Carlos Trigo
Sent: Friday, November 07, 2008 3:09 PM
Subject: RE: AeroElectric-List: Need 1,2 & 3 amp fuses
Bill
I am not an EE, as a matter of fact I'm a Civil Eng, but it seems to me
that although fuses are designed to protect the wire, the current (which
determines the fuse Amp) that runs through the wire depends on the
device it serves.
For example, when installing the GPSx96 in the panel the instructions
call for a 1A fuse or CB, and the AOA Cpu from Proprietary (now AFS)
calls for 4A, and Flightcom 403 intercom call for AWG 20 or 22 wire and
1A breaker/fuse.
Am I missing something?
Carlos
________________________________
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Bill
Boyd
Sent: sexta-feira, 7 de Novembro de 2008 19:30
Subject: Re: AeroElectric-List: Need 1,2 & 3 amp fuses
IIRC, fuses are sized to protect the wire, not the device. Where are
you finding wire gauges light enough to need 1, 2, or 3 A protection?
I've never encountered wire this small in experimental aviation except
possibly a MAC trim servo, and for some reason never fused those wires.
Minds that need examining want to know...
-Bill B
On Fri, Nov 7, 2008 at 2:12 PM, <longg@pjm.com> wrote:
Matt,
You must have one of those 48' Bonanzas :) Many pieces of modern
equipment are now running well below 5 amps. My strobes, efis panels,
nav lights, trim, some radios, gauges, led lights and so on all run in
the 1-3 amp range. Pretty soon these things will run on batteries and
well just place a solar panel on the wind screen and fly above the
clouds.
Glenn
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Matt
Prather
Sent: Friday, November 07, 2008 12:00 PM
Subject: Re: AeroElectric-List: Need 1,2 & 3 amp fuses
<mprather@spro.net>
What size wire requires a fuse less than 5A? Or is this for another
application?
Matt-
>
> Does anyone know of a place to purchase 1,2 & 3 amp fuses on the
street?
> I've tried a number of auto stores, Walmart etc, but cannot find
> anything below 5 amp.
>
>
> Thanks,
> Glenn
>
>
> Do Not Archive
>
>
--
--Bill
So this is how democracy dies, with thunderous applause...
http://www.matronics.com/contribution
http://www.matronics.com/contribution
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Vx Aviation Announces Free Shipping |
The following announcement should be of interest to the Aeroelectric list.
Some of the products mentioned were inspired by Bob's early work on aircraft
audio systems.
Thanks, Vern Little
==================
Vx Aviation Now Includes Free Shipping on Mx Products
Best Selling Audio Mixer, Music Adapter, Music/Cell Phone Adapter and Tone
Annunciator all ship for free.
VANCOUVER, BC---November 10, 2008---Vx Aviation announced an immediate
reduction in effective sales price by including free airmail shipping to the
USA, Canada and the UK on its best-selling MxT Product Family devices. This
saves between 9% and 23% of the total cost, depending on the product.
The Mx family consists of several innovated audio products for non-certified
aircraft systems, including:
The AMX-2A 10-Channel Audio Mixer Amplifier (Miniature Audio Panel);
The ASX-2A Stereo Headphone Music Amplifier;
The ASX-2B Stereo Music and Cellphone Adapter; and
The AL-1A Tone Annunciator.
All devices in the MX family are extremely compact. Taking advantage of
advanced microelectronics, the devices are packaged in D-subminiature
connector shells and typically weigh only one ounce (30 grams). This keeps
space and weight to a minimum and greatly simplifies installation.
All of the devices provide the exclusive GroundTrakT bonding system for the
easy connection of shielded wiring and the resulting reduction in electrical
noise interference. By eliminating the requirement for externally
daisy-chaining electrical shields, GroundTrak increases the quality and
reliability of the connections and allows for easy future upgrades and
changes.
For more information, contact Vx Aviation at www.vx-aviation.com .
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | crimp connectors with built-in shrink tubing? |
Hey all -
I'm sure the Connection mentions something about this, but I don't
have it in front of me (i should know better than to leave it at
home!) and as I was getting ready to order some shrink tubing, I ran
across these crimp connectors with shrink tubing already on them.
They're here: http://cableorganizer.com/heat-shrink/heat-shrink-
connectors.html
What's the deal with these? Are they awesome? If not, why not?
Also, is there a recommended material type for shrink tubing? Sorry,
I feel like I could be looking these things up in the Connection, but
as I said, I'm sitting here daydreaming instead of working. :)
any help would be appreciated!
thanks
cj
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: crimp connectors with built-in shrink tubing? |
At 09:42 AM 11/10/2008 -0800, you wrote:
>
>Hey all -
>
>I'm sure the Connection mentions something about this, but I don't
>have it in front of me (i should know better than to leave it at
>home!) and as I was getting ready to order some shrink tubing, I ran
>across these crimp connectors with shrink tubing already on them.
>They're
>here: http://cableorganizer.com/heat-shrink/heat-shrink-connectors.html
>
>What's the deal with these? Are they awesome? If not, why not?
>Also, is there a recommended material type for shrink tubing? Sorry,
>I feel like I could be looking these things up in the Connection, but
>as I said, I'm sitting here daydreaming instead of working. :)
>
>any help would be appreciated!
You won't find them in the book . . . for several reasons.
These are but one example of many that are offered in
the marketplace and I have no personal experience with
them or knowledge about them. I've tried similar products
from various sources over the years and discarded all of
them. They tended to be bulkier and/or less secure in the
wire grip than the PIDG butt splices I stock and use most.
These are a bit different so I'll get some, see what
they look like installed and how well they work. Two
packages of 50 pcs + shipping comes to $37 so they're
37-cents each at this quanity.
They tend to be expensive on a joint-for-joint basis
compared to simply adding heat shrink to less expensive
or more compact techniques. I can't tell you that these
particular products are bad or to be avoided. But you'll
need very few of them to assemble your airplane. In
terms of performance, they'll work no "better" than
the process described here:
http://www.aeroelectric.com/articles/PM_Solder_Sleeve/PM_Solder_Sleeve.html
I'll give them a try and report back.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Z-13 and SD-8 |
At 10:35 AM 11/10/2008 +0000, you wrote:
>Bob.
> > If the rectifier/regulator were inadequately heat-sinked, it could
> have caused internal damage at some point in the flight.That's about the
> only part of the SD-8 system that's vulnerable.
>My system uses the stainless steel firewall as a heat sink... is that
>sufficient? Do I need conductive paste(?) between it and the firewall? Any
>other suggestions?
>
> > Check with a voltmeter that you have AC voltage coming in while the
> engine is running and that the disconnect relay is closing.
>
>So far have only checked the disconnect relay is working ok, it is, and
>the DC output at the relay. This varied from 12.9 to 12.3 volts depending
>on load. Are these the figures you'd expect?
>I can't seem to find what the SD-8s dc output should be on any website
>pages! I'd have hoped/thought it would be similar to the main alternators
>approx 14.7v, is this correct?
>
>Would my results indicate a regulator fault, or should I still check the
>ac output?
That's where you need to begin. If there's no power input
to the rectifier/regulator, then there can be no output.
Yes, the output voltage should be on the order of 14.2 to
14.8 volts. The engine RPM will have to be much higher than
ground idle before the alternator comes on line.
Bob . . .
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Mechanical noise cancellation experiment |
At 08:29 PM 11/4/2008 -0600, you wrote:
>Bob, I've been thinking of ways to overcome the noise issues we
>encountered while flying the trike this summer and came to the conclusion
>that some sort of mechanical cover might help. I have searched the
>housewares aisle at various box stores and wandered Ace Aircraft Supply
>looking for inspiration. The other night I had an Aha! moment. The picture
>shows the result. I held the terminal boots in my closed hand to warm them
>up before I tried to slide them over the headset mic and the boom joint. I
>used a bamboo skewer with a rounded end to gently pry and stretch the
>opening when it wanted to catch on the screw head at the swivel. After
>they were on I cut some thin porous foam to make a muff over the mic
>element and pushed it in the boot and around the mic with the skewer.
>This afternoon Lou and I went out in the back yard and did a test to see
>how well the idea worked. The wind was blowing at almost flight speed for
>the trike and the results were very good. It took very little squelch to
>knock down what little noise came through and the wind did not activate
>the mic at all. I don't know how well it will work with the ambient noise
>in the trike with the engine behind us, but the first pass test seems
>promising.
Cool idea. Let me know how it works out in practice!
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: crimp connectors with built-in shrink tubing? |
Bob,
When I first saw this "comic book" I thought it looked like a lot of
trouble. As with everything you suggest I tried it anyway and it was a lot
of trouble-the first couple of times!! After that it became my joint of
choice. (The rest of you who grew up in the 60s can stop laughing now!) I
liked it so much I replaced most of the other splices in my Long-EZ while I
was installing Dynon units.
Sam Chambers
Long-EZ N775AM
----- Original Message -----
From: "Robert L. Nuckolls, III" <nuckolls.bob@cox.net>
Sent: Monday, November 10, 2008 12:30 PM
Subject: Re: AeroElectric-List: crimp connectors with built-in shrink
tubing?
> <nuckolls.bob@cox.net>
>
> At 09:42 AM 11/10/2008 -0800, you wrote:
>><cj@popstudios.com>
>>
>>Hey all -
>>
>>I'm sure the Connection mentions something about this, but I don't
>>have it in front of me (i should know better than to leave it at
>>home!) and as I was getting ready to order some shrink tubing, I ran
>>across these crimp connectors with shrink tubing already on them.
>>They're here:
>>http://cableorganizer.com/heat-shrink/heat-shrink-connectors.html
>>
>>What's the deal with these? Are they awesome? If not, why not?
>>Also, is there a recommended material type for shrink tubing? Sorry,
>>I feel like I could be looking these things up in the Connection, but
>>as I said, I'm sitting here daydreaming instead of working. :)
>>
>>any help would be appreciated!
>
> You won't find them in the book . . . for several reasons.
> These are but one example of many that are offered in
> the marketplace and I have no personal experience with
> them or knowledge about them. I've tried similar products
> from various sources over the years and discarded all of
> them. They tended to be bulkier and/or less secure in the
> wire grip than the PIDG butt splices I stock and use most.
> These are a bit different so I'll get some, see what
> they look like installed and how well they work. Two
> packages of 50 pcs + shipping comes to $37 so they're
> 37-cents each at this quanity.
>
> They tend to be expensive on a joint-for-joint basis
> compared to simply adding heat shrink to less expensive
> or more compact techniques. I can't tell you that these
> particular products are bad or to be avoided. But you'll
> need very few of them to assemble your airplane. In
> terms of performance, they'll work no "better" than
> the process described here:
>
> http://www.aeroelectric.com/articles/PM_Solder_Sleeve/PM_Solder_Sleeve.html
>
> I'll give them a try and report back.
>
>
> Bob . . .
>
> ----------------------------------------)
> ( . . . a long habit of not thinking )
> ( a thing wrong, gives it a superficial )
> ( appearance of being right . . . )
> ( )
> ( -Thomas Paine 1776- )
> ----------------------------------------
>
>
>
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Crimp connectors with built-in shrink tubing? |
At 08:29 PM 11/10/2008 -0600, you wrote:
><schamber@glasgow-ky.com>
>
>Bob,
>
>When I first saw this "comic book" I thought it looked like a lot of
>trouble. As with everything you suggest I tried it anyway and it was a
>lot of trouble-the first couple of times!! After that it became my joint
>of choice. (The rest of you who grew up in the 60s can stop laughing
>now!) I liked it so much I replaced most of the other splices in my
>Long-EZ while I was installing Dynon units.
>
>Sam Chambers
>Long-EZ N775AM
It does have a "process" to master. That's why I liked
to demonstrate it in class at the seminars. If folks
see how long it takes for someone to do it for the
100th time, they're more encouraged to learn it for
themselves . . . and then pleased to find that their
5th attempt went pretty well.
A lot of 'conveniences' have emerged since we first learned to
solder (My first personal soldering iron was a fat plumber's
copper heated on the kitchen stove). But I still have about
as many soldering tools as I have crimp tools. I use
copper-clad fiberglas to build quick-n-dirty enclosures to
custom dimensions by running a bead of solder down the inside
corners of the sheared box sides.
Here's a box I built for a quick-n-dirty data acquisition
system I flew several times on the Beechjet. Except for
the lid rails being pop riveted on, the rest of it is
held together with solder.
http://aeroelectric.com/Pictures/Data_Acquisition/Weeder_Module_DAS_2.jpg
The popular rationale for not using solder is mostly
wrong . . . but it does take a different set of tools
and mind set. I once fielded a comment in class about
hazards of burning one's fingers . . . but had to remind
the gentleman that getting a hunk of meat mashed in the jaws
of a ratchet handled crimp tool was similarly distasteful!
Bob . . .
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|