[NSRCA-discussion] Matt Finley ( Arming Plug )

[James Hiller]

Yah, turning either the receiver or transmitter OFF on my airplanes disallows a motor run, provided the electronic devices function as they should.
Personally I don't trust them and pulling the plug opens the power circuit to the ESC.
Jim
 
From: NSRCA-discussion [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Budd Engineering via NSRCA-discussion
Sent: Monday, February 23, 2015 8:51 AM
To: Matthew Finley; General pattern discussion
Subject: Re: [NSRCA-discussion] Matt Finley ( Arming Plug )
 
At nearly every contest I've attended since I started flying electric in pattern (the 2004 Nats in Masters) I've seen at least one occurrence where someone retrieved a plane without removing an arming plug first.  Usually the pilot reminds the person to do it while they're carrying the plane back or as they're setting it down somewhere.  It happens with my planes too and I make sure they switch the receiver off and then I remove my canopy and disconnect the battery directly.  But before they even get that far I've taken the other steps to make sure there's virtually no chance the motor is going to run.
 
My point is this.  A layered approach is the only way I've found to effectively mitigate this particular risk to the levels of safety that you claim.  Relying on someone to remove an arming plug is not a complete panacea and may lend a false sense of security that the motor system has been de-energized, when in fact it may not have been.  There's many ways to manage the risk to the desired level, the use of an arming plug is one, and may not necessarily be the best.
 
Jerry

Sent from my iPhone

On Feb 23, 2015, at 5:29 AM, Matthew Finley via NSRCA-discussion <nsrca-discussion at lists.nsrca.org> wrote:
I use the Ultra Deans stlye Arming Plug from F3A Unlimited, and It works very well. I would gather it provides you with a 99 % dagree of confidence that your caller , plane carrier , yourself, or anyone else will not be harmed. Yes... I do agree that there is a miniscuel chance that a pilot / caller could forget to unplug the safety, however I feel most pilots that have been doing it a while is like tying your shoes, or etc.... On all of my electrics except for indoor ships, I have some sort of disconnect. I for one would like to see it an inforced rule at all sanctioned meets not just pattern meets, that any plane over a certain size or weight must have one in order to fly. Just my three pennies 


Matthew E. Finley
QCI - Technology Assistant
614-557-3846 Mobile
mfinley at quadcityinnovations.com 

  
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