[NSRCA-discussion] Arming Switch

[Dave Harmon]

So he should have been straddling the tail..and..everyone knows to unplug
the battery before the radio is turned off.

I mentioned earlier that the rx COULD be turned off first and the motor is
not SUPPOSED to start and that I trusted the electronics more than I trust
someone holding the transmitter...BUT..someone always has a grip on the
airplane before any of this happens.

So.this instance boils down to operator error even if the ESC did fail in
this way..I'm not convinced that it really did.

 

The Emcotec device is so much overkill..and liable to fail as well.

If I was to use a disconnect I would do it as Simon pointed out..let's say
the black wire from the ESC and the black wire from the battery is all that
needs to be outside the fuselage. Then, connect or disconnect as needed..no
shorting plug, no extra weight, nothing to pull a chunk out of the
fuselage..no expense.

Even still though..I would have to rewire all the batteries and
chargers..doable but time consuming.

 

Dave Harmon

NSRCA 586

K6XYZ[at]sbcglobal[dot]net

Sperry, Ok.

 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Peter Vogel
Sent: Sunday, February 12, 2012 9:20 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Arming Switch

 

Just relistened to the host's description of what happened (it was his
plane) -- I was wrong on one detail, he wasn't straddling the tail when he
turned off the RX.  It did scare the **** out of him and he counted himself
very lucky that no one was hurt.  Point being, he relied on electronics
which had performed exactly as advertised 100s of times until the one time
they didn't.  I don't like those odds.

 

Some would argue my preferred arming switch (The Emcotec safety power switch
seen here: http://www.hkm-models.com/Emcotec%20Switches.html) does the same
thing and I should use a more traditional circuit interrupting jumper ala
the options Keith listed and I sent out a similar list a little before that
but it would take the simultaneous failure of multiple independent
components for that to happen.

 

Peter+

On Sun, Feb 12, 2012 at 6:20 PM, Dave Harmon <k6xyz at sbcglobal.net> wrote:

Haha..okok.no problem.

 

Dave Harmon

NSRCA 586

K6XYZ[at]sbcglobal[dot]net

Sperry, Ok.

 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Peter Vogel
Sent: Sunday, February 12, 2012 7:35 PM


To: General pattern discussion
Cc: General pattern discussion

Subject: Re: [NSRCA-discussion] Arming Switch

 

The All Things that Fly episode was from a few shows before the show that
has 'switches' in the title from late last year.  www.allthingsthatfly.com

 

Bay RC, photo is on there from several years ago, subject is something like
'they're not always cute + cuddly'. I don't have time to hunt down the link
anymore than you do, apparently, but I'm not challenging your credibility. 

 

Peter+

Sent from my iPhone4S


On Feb 12, 2012, at 5:23 PM, "Dave Harmon" <k6xyz at sbcglobal.net> wrote:

Subject: Re: [NSRCA-discussion] Arming Switch


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