Electric F3A

[Del K. Rykert]

For some of us this is why we will never be able to afford to switch even if 
we felt the desire..

                 Del
          nsrca - 473

----- Original Message ----- 
From: "John Ferrell" <johnferrell at earthlink.net>
To: "NSRCA Discussion" <discussion at nsrca.org>
Sent: Thursday, September 22, 2005 8:07 AM
Subject: Re: Electric F3A


> Battery prices and their unpredictable life seem to be the major problem.
>
> Still, it does not seem to me that one can compute the power needs for an 
> electric from the experience gained with an IC power plant.
>
> John Ferrell
> http://DixieNC.US
>
> ----- Original Message ----- 
> From: "John Pavlick" <jpavlick at idseng.com>
> To: "NSRCA Discussion" <discussion at nsrca.org>
> Sent: Thursday, September 22, 2005 12:21 AM
> Subject: RE: Electric F3A
>
>
>> John,
>> Don't try to compare Apples and Oranges. I've seen Dan's plane fly and 
>> yes
>> it seems to work very well.  Remember though, an electric motor and an
>> internal combustion engine have very different torque output / power 
>> curves.
>> While an I.C. engine generally needs to spin faster to generate torque, 
>> an
>> electric motor can generate a lot of torque at very low RPM. Also, I 
>> don't
>> think an electric motor really "unloads" as the plane flies. I've only
>> played with the little stuff, so I'm not an expert by any means. It will 
>> be
>> very interesting to see what develops in the near future. If only 
>> batteries
>> were a little more reasonably priced...
>>
>> John Pavlick
>> http://www.idseng.com
>>
>>
>>  -----Original Message-----
>>  From: discussion-request at nsrca.org 
>> [mailto:discussion-request at nsrca.org]On
>> Behalf Of John Ferrell
>>  Sent: Wednesday, September 21, 2005 11:32 PM
>>  To: discussion at nsrca.org
>>  Subject: Re: Electric F3A
>>
>>
>>  You are getting through to me...
>>  Dan Landis was using a Glow prop on his Brio at the Nats. That helps me 
>> to
>> better understand the power requirements.
>>
>>  Other than buy & try, is there a way to determine what kind of battery
>> requirements might be required to drive an APC 15-12 at about 8200 rpm? I
>> had in mind the same AXI 5330/18 motor that Landis used.
>>
>>  Another way to ask my question is "what does it take to replace a YS140?
>>
>>  John Ferrell
>>  http://DixieNC.US
>>
>>
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>
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