[NSRCA-discussion] Question.

[Chad Northeast]

Dave,

I don't believe that is entirely correct, there is a limit to the amps on motors, either through saturation or through losses in the windings.

I am not an expert but what I have been told is there is a point at which torque begins to decrease with increasing amps beyond which point your power out drops with increasing power in.

So in effect we are "limited"

Chad

----- Original Message -----
From: Dave <DaveL322 at comcast.net>
Date: Friday, August 20, 2010 7:14 am
Subject: Re: [NSRCA-discussion] Question.
To: 'General pattern discussion' <nsrca-discussion at lists.nsrca.org>

> "Power" of an IC engine is generally related to 
> displacement...but not
> exclusively..more RPM at the same displacement equals more power.
> 
>  
> 
> Electrics are limited on voltage only.there is no limit on amps.both
> contribute to power, so there is no limit on electrics.
> 
>  
> 
> The limiting factor in pattern is really the noise limit, for 
> both IC and
> electric.
> 
>  
> 
> Regards,
> 
> 
> Dave
> 
>  
> 
>  
> 
>  
> 
>   _____  
> 
> 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, 
> measuredprior 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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