[NSRCA-discussion] Arming device

Sat May 16 23:11:20 AKDT 2015

You need to have the motor at least idling before turning the 
transmitter off. The test should prove that failsafe will stop the motor 
and is not just a throttle hold.
John
On 5/16/2015 4:55 PM, David Harmon via NSRCA-discussion wrote:
> With as much talk that has gone on and on andonandonandonandon about this
> arming device......puff..puff....not much percentage.
> Especially when it is so easy to check.....
> Before the first takeoff of each pilot on the first round....the helper
> holds the plane off the ground and the pilot turns off the transmitter.
> The judges can verify that the motor does not start.
> Easy....no drama.
>
> Oh wait....this was never done with glow....but I HAVE seen several guys
> chawed up by a howling YS.
> One time a guys airplane chased him in a circle as he was trying to catch
> it...he had one leg in front of one wing and for an old guy he moved pretty
> quick.
> I can't describe how long I laughed about that incident.
>
> In the end....my opinion is checking the fail-safe function should be a must
> at each contest.
>
> David Harmon
> Sperry, OK
>
> -----Original Message-----
> From: NSRCA-discussion [mailto:nsrca-discussion-bounces at lists.nsrca.org] On
> Behalf Of Ron Van Putte via NSRCA-discussion
> Sent: Saturday, May 16, 2015 4:58 PM
> To: General pattern discussion
> Subject: Re: [NSRCA-discussion] Arming device
>
> I have seen too many situations where an ID10T error caused serious damage
> that would have been precluded by the use of a shorting plug.
>
> What percentage of pilots’ transmitters would fail the fail safe test?
> Anybody?
>
> Ron Van Putte
>
> On May 16, 2015, at 4:08 PM, Whodaddy Whodaddy via NSRCA-discussion
> <nsrca-discussion at lists.nsrca.org> wrote:
>
>> Seems like we have to many people with to much time on their hands sitting
> around fantasizing about what might happen if .... Really.... if u cant
> control the aircraft in all aspects then u prolly shouldn't have one... Let
> alone legislate what i need to be doing with mine...
>>
>> Gary
>>
>> Sent from my iPhone
>>
>>> On May 16, 2015, at 3:58 PM, Jon Lowe via NSRCA-discussion
> <nsrca-discussion at lists.nsrca.org> wrote:
>>> Code doesn't apply to model airplanes.  Cars do not disconnect the
> battery, except on race cars with a disconnect switch in case of a wreck.
> Normal road cars do not, and modern cars leave a lot of things connected
> when the ignition is off.  A lot of cars have underhood fans that run for
> awhile after the car is shut off.
>>> If this was a big issue, AMA would address it with all model aircraft,
> not just pattern. Electric is common in helis, controline, etc. We are over
> killing this something awful.
>>> Jon
>>>
>>>> On May 16, 2015 2:11 PM, Vicente Bortone via NSRCA-discussion
> <nsrca-discussion at lists.nsrca.org> wrote:
>>>> the ignition switch.
>>>>
>>>>> On Saturday, May 16, 2015, Vicente Bortone <vincebrc at gmail.com> wrote:
>>>>>
>>>>>
>>>>>
>>>>>> On Saturday, May 16, 2015, Del R via NSRCA-discussion
> <nsrca-discussion at lists.nsrca.org> wrote:
>>>>>> The nice thing about being brought up around GUNS.. It teaches
>>>>>> people to respect it always as though it is loaded and cocked
>>>>>> ready to deliver its physical life altering energy!!!.. < tic >
>>>>>>
>>>>>>
>>>>>>> ----- Original Message -----
>>>>>>> From: David Cook via NSRCA-discussion
>>>>>>> To: Jim Woodward ; General pattern discussion
>>>>>>> Sent: Saturday, May 16, 2015 10:48 AM
>>>>>>> Subject: Re: [NSRCA-discussion] Arming device
>>>>>>>
>>>>>>> Just to open the can of worms from the other end.
>>>>>>> Now that I have seen the damage a runaway can do to a pool table even
> with an external arming device, I have begun to make it a common practice to
> remove the prop from the electric planes any time I am not at the field
> flying. Store the ammunition and the pin under two different locks. How easy
> is it to be careless in the shop or transporting a plane. This thread could
> just explode with stories of mishaps we have made or come way too close to.
>>>>>>> You just can't be too carful with these things!!!
>>>>>>> DC
>>>>>>>
>>>>>>>> On Sat, May 16, 2015 at 10:21 AM, Jim Woodward via NSRCA-discussion
> <nsrca-discussion at lists.nsrca.org> wrote:
>>>>>>>> ... Going electric induces a mental physchosis that requires
>>>>>>>> everyone else to switch, then go and change the rules for glow
>>>>>>>> :)
>>>>>>>>
>>>>>>>> Sent from my iPhone
>>>>>>>>
>>>>>>>>> On May 16, 2015, at 9:38 AM, Keith Hoard via NSRCA-discussion
> <nsrca-discussion at lists.nsrca.org> wrote:
>>>>>>>>> I think the YS guys should have their caller remove the fuel tank
> and glow plug before picking up the plane and exiting the runway  . . .
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> From: NSRCA-discussion
>>>>>>>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
>>>>>>>>> precisionaero via NSRCA-discussion
>>>>>>>>> Sent: Saturday, May 16, 2015 8:38 AM
>>>>>>>>> To: General pattern discussion
>>>>>>>>> Subject: Re: [NSRCA-discussion] Arming device
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I think we should reconfigure a YS engine to drive a generator to
> supply electricity to the electric motor.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Sent via the Samsung Galaxy S™ III, an AT&T 4G LTE smartphone
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> -------- Original message --------
>>>>>>>>>
>>>>>>>>> From: Peter Vogel via NSRCA-discussion
>>>>>>>>>
>>>>>>>>> Date:05/16/2015 09:31 (GMT-05:00)
>>>>>>>>>
>>>>>>>>> To: General pattern discussion , ronlock at comcast.net, David
>>>>>>>>>
>>>>>>>>> Subject: Re: [NSRCA-discussion] Arming device
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I think we're all in agreement, which is why the rules proposal we
> put forth requires a *physical* break in the circuit!
>>>>>>>>> Sent from Outlook
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> On Sat, May 16, 2015 at 6:16 AM -0700, "ronlock--- via
> NSRCA-discussion" <nsrca-discussion at lists.nsrca.org> wrote:
>>>>>>>>>> I'm in agreement.
>>>>>>>>>>
>>>>>>>>>> Ron Lockhart
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> ________________________________
>>>>>>>>>>
>>>>>>>>>> From: "David via NSRCA-discussion"
>>>>>>>>>> <nsrca-discussion at lists.nsrca.org>
>>>>>>>>>> To: nsrca-discussion at lists.nsrca.org
>>>>>>>>>> Sent: Saturday, May 16, 2015 1:14:21 AM
>>>>>>>>>> Subject: [NSRCA-discussion] Arming device
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> I'm not trying to bring up a sore subject but this has been
> bugging me since it was up a while back. I am the senior electronics
> technician in the plasma physics department at the University of Wisconsin.
> About a third of what I do is make interlock circuits for the Madison
> Symmetric Torus. I know that the best way of keeping things safe is to
> remove the potential energy from a circuit to keep bad things from
> happening. The problem with depending on a circuit such as the emcotec type
> of disconnect or to just relying solely on the radio and ESC to keep things
> safe is failure modes. You can plan for all different failure types but to
> make it a circuit that isn't a lead brick being added to the plane there are
> compromises that have to be made. This leads to designing systems that may
> deal with only the most common types of failures. For example most common
> diodes and tantalum capacitors usually fail in a shorted mode, but not
> always. Many carbon resistors will decrease in résistance just prior to
> opening up. You get the idea, there are just so many possibilities and
> combinations that in my opinion the only real way to safe a power system is
> to disconnect the energy source. Ok, now I feel better that I said
> something.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> David
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
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>>>>>>>>> _______________________________________________
>>>>>>>>> NSRCA-discussion mailing list
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>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> NSRCA-discussion mailing list
>>>>>>>> NSRCA-discussion at lists.nsrca.org
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>>>>>>>
>>>>>>> ________________________________
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> NSRCA-discussion mailing list
>>>>>>> NSRCA-discussion at lists.nsrca.org
>>>>>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>>>
>>>>>
>>>>> --
>>>>> Vicente "Vince" Bortone
>>>>
>>>>
>>>> --
>>>> Vicente "Vince" Bortone
>>> _______________________________________________
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>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
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