[NSRCA-discussion] Question.

[Michael Wickizer]

As I remember the Worlds last year, electrics were checked for voltage before each flight.  Sound checks were done on every plane, every flight.  There was a system for random weight checks after each flight.  Draw a marble from a jar, red you got weighed other color you didn't, or something like that.
 


From: atwoodm at paragon-inc.com
To: nsrca-discussion at lists.nsrca.org
Date: Thu, 19 Aug 2010 15:22:07 -0400
Subject: Re: [NSRCA-discussion] Question.






I can’t answer the “checking” question, as I have never had mine checked, but I “think” I was told they did at the worlds.  As to why the limit on voltage, that’s simply a safety issue.   40V dc is generally accepted as the threshold for non-lethal dc voltage.  Your skins natural resistance will prevent enough current from going through you at that voltage to kill you (though as many have experienced, it can burn the crap out of your fingers).   That said, if you had electrodes poked through the skin, it could still toast you. 
 
There has been talk about raising that limit to accommodate 12s batteries which FAI has done for the Heli F3C competitions.  I doubt you’ll see it go above that.   I’m actually surprised that the AMA hasn’t put an upper limit (or maybe they have and I’m unaware) for the same safety reason.
 
I can only imagine what a good old fashioned electrocution would do for our image.   Big bird fun fry…
 
 
 
Mark Atwood
Paragon Consulting, Inc.  |  President
5885 Landerbrook Drive Suite 130, Cleveland Ohio, 44124 
Phone: 440.684.3101 x102  |  Fax: 440.684.3102
mark.atwood at paragon-inc.com  |  www.paragon-inc.com
 

From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Tim Taylor
Sent: Thursday, August 19, 2010 3:13 PM
To: nsrca-discussion at lists.nsrca.org
Subject: [NSRCA-discussion] Question.
 





4. Model Aircraft Requirements: 

4.1: Propulsion source limitations: Electrically-powered model aircraft are limited to a maximum of 42.56 volts for the propulsion circuit, measured prior to flight while the competitor is in the ready box. 

 

I see Electrics have a "Displacement" limit, why are they limited and the IC engines not?

 

I also see they must be checked in the ready box prior to each flight, anyone ever have this check done? Even at the worlds?

 

Or is this another ignored rule?

 

Tim
 
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