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From: "Nick Hoke" <nhoke-at-nksd.wednet.edu>
Subject: RE: swampcat overkill
Date: Thu, 6 May 2004 08:21:15 -0700
Reply-To: tanks-at-rctankcombat.com

Hi Steve, thanks for the offer. Would the two 48v motors just suck the juice
out of a battery bank
pretty quickly, or could they run at 12 or 24v with enough torque to move my
big tank?



-----Original Message-----
From: tanks-admin-at-rctankcombat.com
[mailto:tanks-admin-at-rctankcombat.com]On Behalf Of Steve Tyng
Sent: Tuesday, May 04, 2004 11:32 PM
To: tanks-at-rctankcombat.com
Subject: RE: swampcat overkill

Nick wrote:

> I've wondered about that, mostly because I know nothing about
> batteries. Would a regular old car battery work for my application?

Car batteries are designed for high amperage short duration loads (i.e.
starting a car).  Depending on how long you want to run the Swampcat around
before recharging, will determine if a starter battery will work for you.

If your still thinking of using the four batteries.  I have two heavy duty
48volt DC motors that would probably move your vehicle around just fine.
They came out of an old computer tape drive (those big floor standing units
you see in old scifi films).  Their maybe 8" long and 4 to 5" in diameter
with 1/2" shafts.  The caveat is that they are not permanent magnet (PM)
motors.  They are field coil.  They use more amps than an equivalent PM
motor but they can achieve higher torque than a PM motor.

Steve Tyng