Re: synchronous motor

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "S.Gaeta by way of Terry Fritz <twftesla-at-qwest-dot-net>" <sgtporky-at-prodigy-dot-net>

Hi Justin,

You can get 'em from McMaster Carr for $3.63 each. Just put "Motor Arbors"
in the search box. They have ones that fit 1/4, 5/16, 3/8, 1/2, and 5/8"
shafts. The site makes ordering a breeze and they ship very fast.

Sue
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, August 07, 2001 10:36 PM
Subject: Re: synchronous motor


> Original poster: "Barton B. Anderson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>
>
> Hi Justin,
>
> Also, you can use a pulley to attach to the disk and a center-press hub
> designed to
> fit the pulley hole and shaft. Center's the disk to the shaft very well.
> They are
> low cost items. I purchased this set up for about $10 all together at
Fleet
> Farm
> back when I lived in MN (man, I miss that store). Anyway, just a thought
> for you.
> It's worked great for me and should I use another motor with a different
shaft
> size, I can easily pick up a hub for it without any further modifications
> required
> (the shaft sizes come in many different common sizes, but the pulley hole
is
> standard). You can mount the disk on and off in seconds and always have it
> pefectly
> mounted. Saves a lot of time messing around with part of the system.
>
> Take care,
> Bart
>
> Tesla list wrote:
>
> > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <FutureT-at-aol-dot-com>
> >
> > Justin,
> >
> > There are a number of ways to attach the disc to the motor.
> >
> > 1)   Use an arbor which can be from a drill chuck.  In this
> > case, you don't use the chuck, but the arbor fits over the
> > motor shaft, and has a threaded portion on the other end.
> > This goes through the disc and a nut is tightened onto the
> > threaded portion of arbor.  These arbors are available
> > without the drill chuck.  (I don't know where to find or buy
> > any of the items I mention.)
> >
> > 2)  Find a small pulley which fits onto the motor shaft.  Drill
> > and tap 3 or 4 holes into the pulley, and drill matching holes
> > into the disc.  Use a strong pulley and strong screws to hold the
> > disc to the pulley
> >
> > 4)  Find some other pulley-like object which fits the motor
> > shaft and use it as in (3) above.  Sometimes it is possible
> > to drill only a center hole and use a large bolt at the center
> > if the pulley is long, so it extends past the end of the motor
> > shaft.  If you use just a center bolt, be sure to use a star-
> > gripping washer beneath the rotor, and one under the screw
> > so the disc won't spin loose.  There's a tendency for the
> > disc to loosen the screw when the motor is shut off.......
> > especially if there's any self-braking going on, in the case
> > of a large motor used with the electrical sync gap phase
> > shifter circuit.
> >
> > 5)  Have a special hub machined specially for the disc.
> >
> > John
>
>
>