[NSRCA-discussion] Arming plug and Failsafe

Thu May 28 09:15:28 AKDT 2015

For the purists who do not want asymmetric drag-producing exterior elements, one could install an arming plug on each side of the aircraft; green LED on the right side arming plug and red LED on the right side arming plug.  Then you could tell you had low voltage no matter which way the airplane was going.

Ron

> On May 27, 2015, at 10:00 PM, Peter Vogel via NSRCA-discussion <nsrca-discussion at lists.nsrca.org> wrote:
> 
> What I think would be really cool is an LED on a deans arming plug so that plug lights up when it's in and armed.  Put different colors based on voltage and you have a cheap check for accidentally using a discharged pack.
> 
> Peter+
> 
> On Wed, May 27, 2015 at 7:48 PM, Steve Hannah via NSRCA-discussion <nsrca-discussion at lists.nsrca.org <mailto:nsrca-discussion at lists.nsrca.org>> wrote:
> If all you want is an external indication of armed packs, this is really easy to do. I just installed a blinding green LED on mine . I have mine connected to my RX on an unused channel. Since I use the Mezon 90 with BEC it will be illuminated when either my main packs are connected or if just my backup is powering the RX. 
> 
> I got the LED (actually several colors to try), mount and a 270 ohm resistor from sparkfun and allelectronics.  Sparkfun's LED's are brighter than allelectronics. I can see the darn thing 150m out!
> 
> Use this tool to figure out what you need for a resistor. http://led.linear1.org/led.wiz <http://led.linear1.org/led.wiz>
> 
> 
> On May 27, 2015, at 18:42, Jas via NSRCA-discussion <nsrca-discussion at lists.nsrca.org <mailto:nsrca-discussion at lists.nsrca.org>> wrote:
> 
>> So a combination red/orange/green led for 38v, 40v and 42v?
>> 
>> Sent from my iP
>> 
>> On May 27, 2015, at 9:25 PM, ronlock--- via NSRCA-discussion <nsrca-discussion at lists.nsrca.org <mailto:nsrca-discussion at lists.nsrca.org>> wrote:
>> 
>>> I'm in if you have any thoughts of marketing one.
>>> In mean time, how much fuss is it to come up with a part number
>>> for the resistor & LED?  Is resistor gonna get hot?
>>> This raises question of at what voltages will LED be on?
>>> We want it on, in the case pilot runs batts way too low, as
>>> in loaded a used set and got a third of the way thru sequence.
>>> I guess nothing is as simple as it first appears.
>>> In my Bravo, given large canopy, LED will have to mount in front of
>>> firewall, or behind canopy.
>>>  
>>> I'm still interested in an LED that would confirm installed batts
>>> are above 20v, to prevent installing a lightly or heavily used set.
>>> Later,  Ron
>>> 
>>> From: "Ed Alt via NSRCA-discussion" <nsrca-discussion at lists.nsrca.org <mailto:nsrca-discussion at lists.nsrca.org>>
>>> To: "Vicente Bortone" <vincebrc at gmail.com <mailto:vincebrc at gmail.com>>
>>> Cc: "General pattern discussion" <nsrca-discussion at lists.nsrca.org <mailto:nsrca-discussion at lists.nsrca.org>>
>>> Sent: Tuesday, May 19, 2015 11:57:16 AM
>>> Subject: Re: [NSRCA-discussion] Arming plug and Failsafe
>>> 
>>> In its simplest form, It's just a resistor and an LED.
>>> 
>>> 
>>> 
>>> On May 19, 2015, at 11:55 AM, Vicente Bortone <vincebrc at gmail.com <mailto:vincebrc at gmail.com>> wrote:
>>> 
>>> I agree with Ed.  I think the 50 ft could be increases to 100 ft. It is just amazing how bright is that LED. Ok Ed,  You got a new product to make.  The ARMING LED. 
>>> On Tue, May 19, 2015 at 10:45 AM Ed Alt via NSRCA-discussion <nsrca-discussion at lists.nsrca.org <https://web.mail.comcast.net/zimbra/JAVASCRIPT-BLOCKED_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>> wrote:
>>> Not with the LEDs I use.  You can see them at 50 feet on a bright day.
>>> 
>>> 
>>> 
>>> On May 19, 2015, at 11:44 AM, Jay Marshall via NSRCA-discussion <nsrca-discussion at lists.nsrca.org <https://web.mail.comcast.net/zimbra/JAVASCRIPT-BLOCKED_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>> wrote:
>>> 
>>> No - Difficult to reliably see LED in bright sunlight ….
>>> 
>>>  
>>> Jay Marshall
>>> 
>>>  
>>> From: NSRCA-discussion [mailto:nsrca-discussion-bounces at lists.nsrca.org <https://web.mail.comcast.net/zimbra/JAVASCRIPT-BLOCKED_e(%7B%7D,'cvml','nsrca-discussion-bounces at lists.nsrca.org');>] On Behalf Of Jas via NSRCA-discussion
>>> Sent: Tuesday, May 19, 2015 11:26 AM
>>> To: General pattern discussion
>>> Subject: Re: [NSRCA-discussion] Arming plug and Failsafe
>>> 
>>>  
>>> Nice idea, light weight and probably easy to do. 
>>> 
>>> Sent from my iP
>>> 
>>> 
>>> On May 19, 2015, at 10:49 AM, Rudy via NSRCA-discussion <nsrca-discussion at lists.nsrca.org <https://web.mail.comcast.net/zimbra/JAVASCRIPT-BLOCKED_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>> wrote:
>>> 
>>> All this rhetoric is making us aware of electrical safety issues in pattern flying. That’s good in itself whether you use an arming device or use a switch on your radio. Redundant systems: arming and radio switch are safer still. They both work when used.
>>> 
>>>  
>>> Someone mentioned how can you tell if the plan is energized. Hmm, how about an LED light at the top of the plan just behind the canopy that is lit when the system is energized. Oh my, that’s another worm for the cam.
>>> 
>>>  
>>> ¿Por Qué No?
>>> 
>>>  
>>>  
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>>> -- 
>>> Vicente "Vince" Bortone
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> -- 
> Director, Fixed Wing Flight Training
> Santa Clara County Model Aircraft Skypark
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