Electric F3A

[John Pavlick]

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.