Today's Message Index:
----------------------
1. 06:11 AM - Re: Open source wig-wag project (Eric M. Jones)
2. 12:51 PM - Re: Re: Open source wig-wag project (Sacha)
3. 05:11 PM - Re: Re: Open source wig-wag project (Charlie England)
4. 06:45 PM - Removable comm antenna (Holger Selover-Stephan)
5. 11:53 PM - Re: 2012 List of Contributors (Stuart Hutchison)
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 |
|
Subject: | Re: Open source wig-wag project |
> So Eric, although we were told by Vertical Power that our VP-200 will wig/wag
our Duckworks HIDs in each wing leading edge, it's a bad idea to do that?
To make this abundantly and perfectly clear:...YES and NO.
Personally I love LEDs more. But HIDs are amazing technology, and I can show you
why they are the best source available for putting into a reflector.
But when we tested HID power supplies, we cycled them on/off 10,000 times in heat-stressed
environments, NOT 2,500 times an hour.
Is is possible that the OEM of the lamps and/or HID power supplies would provide
a written guarantee of the lamps and/or power supplies for the intended use
in aircraft Wig-wagging? HELL NO.
Would it be better (only in term of lifetime) to wig-wag HIDs or LEDs? No doubt
about it, LEDs.
Is it be vaguely possible that the HIDs will do fine? YES. Could it be that they
are worth their weight in gold if it prevents a collision with another aircraft
or a fat Canadian goose and to hell with any questions about possible short
lifetimes of the HID and/ power supply? YES!
Is it a really bad idea to fly way up off the ground with an airplane you built
yourself? Errrrr......
You decide.
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=390285#390285
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: | Re: Open source wig-wag project |
I would like to install a landing light or two and for various reasons I am leaning
towards LEDs.
Can anyone recommend some products they are happy with? I mean both the bulbs and
the lenses/mounting. If the products are automotive/easy/cheap to source all
the better. I have two circular cutouts about 10cm (4.5in) in diameter which
would be natural places to mount landing lights. Most of my flying is daytime
VFR.
Sacha
On 11/dic/2012, at 15:10, "Eric M. Jones" <emjones@charter.net> wrote:
>
>
>> So Eric, although we were told by Vertical Power that our VP-200 will wig/wag
our Duckworks HIDs in each wing leading edge, it's a bad idea to do that?
>
>
> To make this abundantly and perfectly clear:...YES and NO.
>
> Personally I love LEDs more. But HIDs are amazing technology, and I can show
you why they are the best source available for putting into a reflector.
>
> But when we tested HID power supplies, we cycled them on/off 10,000 times in
heat-stressed environments, NOT 2,500 times an hour.
>
> Is is possible that the OEM of the lamps and/or HID power supplies would provide
a written guarantee of the lamps and/or power supplies for the intended use
in aircraft Wig-wagging? HELL NO.
>
> Would it be better (only in term of lifetime) to wig-wag HIDs or LEDs? No doubt
about it, LEDs.
>
> Is it be vaguely possible that the HIDs will do fine? YES. Could it be that they
are worth their weight in gold if it prevents a collision with another aircraft
or a fat Canadian goose and to hell with any questions about possible short
lifetimes of the HID and/ power supply? YES!
>
> Is it a really bad idea to fly way up off the ground with an airplane you built
yourself? Errrrr......
>
> You decide.
>
> --------
> Eric M. Jones
> www.PerihelionDesign.com
> 113 Brentwood Drive
> Southbridge, MA 01550
> (508) 764-2072
> emjones(at)charter.net
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=390285#390285
>
>
>
>
>
>
>
>
>
>
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: | Re: Open source wig-wag project |
On 12/10/2012 06:17 PM, Eric M. Jones wrote:
>
>
>> My friend and I installed Duckworth HID lights and bought a wig-wag module from Perihilion http://periheliondesign.com/wigwagmnl.htm We did use another device from him.... The wig-wag and lights worked great. Dick Fisher
>
> Thanks, Dick. I still sell the wigwags which work on nearly anything, but the
HIDs tripped me up when they first appeared. There are three things to keep in
mind:
>
> 1) They must be warmed up 20-30 seconds or so first.
> 2) They need a surge suppressor since the initial lamp turn-on neatly exceeds
the mosfet current capability.
> 3) They need a voltage clipper to prevent the starting voltage from getting back
to the mosfet.The zener clippers should be near the ballast but not between
the ballast and the lamp.
>
> BTW: here is my tirade against wig-wagging HIDs: In a previous life, I spent
almost three decades building high power xenon short-arc, HID, and halogen lamp
systems. So I have long experience with both the lamps and their power supplies
and their foibles. And I know in excruciating detail what is needed to wig-wag
them.
>
> So my problem is--everything I know says not to wig-wag the HID lamps because
they will have shorter lamp lifetimes. Everything that is an advantage of HID
lamps disappears quickly if one abuses them by (Oh, let's say) 2500 restarts
per hour! Many problems with HIDs don't occur in any simple way either. There
are second- and even third- order problems to contend with. Furthermore, switched-mode
power supplies and starters are particularly failure-prone when abused.
I can guarantee that the manufacturer of the lamp-supply-starter DO NOT warranty
their devices to be used in this fashion.
>
> So even though HIDs are the cat's meow, I'd use halogens or LEDs. It's true,
you can do deer-jacking at the other end of the runway with HIDs...but do you
really need to do that? I still advise people to use LEDs, or hold out for a little
while to get the LEDs you want. A couple CREE Ultrafires will land my airplane
now.
>
> --------
> Eric M. Jones
> www.PerihelionDesign.com
> 113 Brentwood Drive
> Southbridge, MA 01550
> (508) 764-2072
> emjones(at)charter.net
>
Hi Eric,
I'm intrigued by your last comment. Assuming you weren't kidding, can
you compare the 'real world' performance of the CREEs to something we're
all familiar with, like the traditional 100W incandescent landing
(tractor) lights or the commonly used 50 & 75 watt MR16 10 degree halogens?
Thanks,
Charlie
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: | Removable comm antenna |
Hi all,
Knowing next to nothing about antenna installations, can I run this one
by you for a sanity check? I'd like to be able to quickly disconnect the
comm antenna on a regular base so I can throw a full body cover of my
motor glider.
The antenna sits on the top of the fuselage and currently is a simple
1/4 wave SS bent back whip antenna. Now I want to mount the fat part of
a Workman QDS1 inside the fuselage so it's flush with the outer skin.
Then drill a hole in the small part of the QDS1 and install the whisker
analog to Bob's article. Next is screwing an isolated BNC panel mount
into the QDS1 and make an electric connection between the middle
connector of the BNC and the QDS1. The QDS1 is isolated against the
fuselage. Would it need to be shielded as well? I could put it into an
aluminum box. Alternatively to the BNC, I could also go with a 3/8" to
SO-239 adapter.
What do you say, would that work?
Here are links to the parts:
Workman QDS1:
http://www.amazon.com/QUICK-DISCONNECT-Stainless-Antenna-thread/dp/B004X70UCO/ref=pd_sxp_redirect
Isolated BNC panel mount:
http://www.allelectronics.com/make-a-store/item/BNC-148/BNC-JACK-ISOLATED-PANEL-MOUNT-CONNECTOR/1.html
Bob's article:
http://aeroelectric.com/articles/Antennas/DIY_Comm_Ant/DIY_Comm.html
Thanks much!
Holger
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: | 2012 List of Contributors |
Hi Matt,
I'm sorry I coulnd't contribute this year ... I am struggling to afford food
at the moment, but I do appreciate the work you do and your help.
Kind regards, Stu
F1 Rocket VH-FLY http://www.mykitlog.com/RockFLY
www.teamrocketaircraft.com
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Matt
Dralle
Sent: Tuesday, December 11, 2012 4:32 AM
Subject: AeroElectric-List: 2012 List of Contributors
--> <dralle@matronics.com>
Dear Listers,
The 2012 Matronics Email List and Forum Fund Raiser officially ended about a
week ago and its time that I publish this year's List of Contributors. It
is the people on this list that directly make the Email Lists and Forums
possible! Their generous Contributions keep the servers and Internet
connection up and running!
You can still show your support this year and pick up a great gift at the
same time. The Contribution Web Site is fast, easy, and secure:
http://www.matronics.com/contribution
Or, by dropping a personal check in the mail to:
Matt Dralle / Matronics
581 Jeannie Way
Livermore CA 94550
I also want to thank Bob, Jon, and Andy for their generous support through
the supply of great gifts this year!! These guys have some excellent
products and I encourage you to visit their respective web sites:
Bob Nucklolls - AeroElectric - http://www.aeroelectric.com
Jon Croke - HomebuiltHELP - http://www.homebuilthelp.com
Andy Gold - The Builder's Bookstore - http://www.buildersbooks.com
And finally, I'm proud to present The 2012 Fund Raiser List of Contributors:
http://www.matronics.com/loc/2012.html
Thanks again to everyone that made a Contribution this year!!
Matt Dralle
Matronics Email List and Forum Administrator
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! --
|