Electric F3A

[John Ferrell]

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
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Anti-Virus.
> Version: 7.0.344 / Virus Database: 267.11.3/107 - Release Date: 9/20/05
>
> =================================================
> If you want your reply email to go to the list, you must Cc: the list!
>
> To access the email archives for this list, go to
> http://lists.f3a.us/pipermail/nsrca-discussion/
> To be removed from this list, go to http://www.nsrca.org/discussionA.htm
> and follow the instructions.
>
> List members email returned for mailbox full will be removed from the 
> list.
>
> 


=================================================
If you want your reply email to go to the list, you must Cc: the list!

To access the email archives for this list, go to
http://lists.f3a.us/pipermail/nsrca-discussion/
To be removed from this list, go to http://www.nsrca.org/discussionA.htm
and follow the instructions.

List members email returned for mailbox full will be removed from the list.