[NSRCA-discussion] Question.

[Keith Hoard]

Yup, but when they come they're marked "Plastic Toy Parts" . . . LOL

On Fri, Aug 20, 2010 at 9:30 AM, <rcmaster199 at aol.com> wrote:

> Nah....these are room temp superconductors. Available at Hobby
> King......but are out of stock
>
>
>  -----Original Message-----
> From: Keith Hoard <khoard at gmail.com>
> To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
> Sent: Fri, Aug 20, 2010 10:26 am
> Subject: Re: [NSRCA-discussion] Question.
>
> Oh boy, you had to bring up the "S"-word.  Now guys are going to have to
> install a liquid helium cooling system for the motor and ESC's. . .
>
> On Fri, Aug 20, 2010 at 9:20 AM, <rcmaster199 at aol.com> wrote:
>
>> If your motor's windings were superconducting, would the current drawn go
>> up or down for any given power output? Assume same potential. What else
>> would benefit?
>>
>> MattK
>>
>>
>>  -----Original Message-----
>> From: Dave <DaveL322 at comcast.net>
>> To: 'General pattern discussion' <nsrca-discussion at lists.nsrca.org>
>> Sent: Fri, Aug 20, 2010 10:11 am
>> Subject: Re: [NSRCA-discussion] Question.
>>
>>   Point taken…..
>>
>> I’ll add some context……in practice, with any reasonably sized electric
>> motor for pattern, there is no power limit.
>>
>> Even if the weight limit were raised…I don’t think you’d see anyone trying
>> to run a DA200 or Plett Terminator.
>>
>> Noise is still the practical limit for both electric and IC…and that limit
>> becomes increasingly hard to meet as power increases (with electric or
>> glow).
>>
>> Regards,
>>
>> Dave
>>
>>
>>
>>  ------------------------------
>>  *From:* nsrca-discussion-bounces at lists.nsrca.org [
>> mailto:nsrca-discussion-bounces at lists.nsrca.org<nsrca-discussion-bounces at lists.nsrca.org?>]
>> *On Behalf Of *Chad Northeast
>> *Sent:* Friday, August 20, 2010 9:59 AM
>> *To:* General pattern discussion
>> *Subject:* Re: [NSRCA-discussion] Question.
>>
>> 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<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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>>
>>
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>
>
>
> --
>
> Keith Hoard
> Collierville, TN
> khoard at gmail.com
>
>
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-- 

Keith Hoard
Collierville, TN
khoard at gmail.com
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