RE: [TCML] Flywheel Pulley on Treadmill Motor

["Steve" <youngster@xxxxxxxxx>]

David,

My solution was to just leave the flywheel attached, use a big enough rotor
so the electrodes were safely spaced away from the rim of the flywheel, and
bolt the flywheel to the rotor.  This worked very well, and the motor ran
cool because the rotor requires considerably less power than required to
drive a treadmill.  My RSG treadmill motor only required less than half the
rated input voltage to achieve the needed RPM.

Steve Y.

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of David Rieben
Sent: Tuesday, July 30, 2013 7:40 PM
To: tesla@xxxxxxxxxx
Subject: [TCML] Flywheel Pulley on Treadmill Motor

Hi all,
 
I was hoping that I could dip into the collective knowledge of this group on
my inquiry, as I've never
dealt with this before. I have an old treadmill that finally bit the dust
(mainly due to the electronic con-
trols messing up). Since it's about 10 years old, I figured it wasn't worth
the cost and/or effort that it 
would take to troubleshoot and fix it but I could not resist rescuing that
nice 1.5 HP cont. duty, DC 
drive motor from the landfill. Like many treadmill duty motors, it has a
nicely balanced weighted fly-
wheel pulley on the drive end of the ~3/8" shaft and I was wondering what's
the best way to remove this 
flywheel with minimal collateral damage to the motor and shaft that it's
attached to? I'm wondering if the 
motor would run too hot even if the flywheel was successfully removed, as
the inner side of the flywheel 
has impeller vains that seem to moving most of the air through the motor and
I doubt that there are any 
impeller fan blades inside the motor housing, due to its relatively small
size. In other word, I'm concerned 
that the motor is only designed to run with the weighted flywheel pulley in
place. It looks as if the shaft 
end may be threaded and the flywheel pulley is simply screwed onto the shaft
but I also wonder how 
much torque it would require to remove it and how one would go about locking
down the shaft so the 
flywheel could be broken free from it? Of course I'm imagining being able to
secure a rotory disc to the 
motor shaft for a possible variable speed ARSG and I had also thought of
simply leaving the flywheel in
place and drilling holes in it for passing through bolts into matching holes
on the garolite rotory disc.
However, this would be problematic due to the fanned out impeller vains on
the inside, motor-facing 
side of the flywheel. Not that I have to have a ready made ARSG anytime
soon, as I already have a 
complete one that's working fine in my current big SG driven coil, but I was
just wondering how to 
go about this for possible future reference.
 
Thanks for any advice,
David Rieben
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