<
[email protected]> wrote:
> Wouldn't it just be easier to make taperlock adapters for the axle
> shafts? The only reason not to go this way I would believe would be
> maybe trying to cut down on the width? I think some type of clutch
> arrangement similar to a detroit locker would be needed on one side
> though so that the axle would turn corners easily.
> Maybe just use a
> differential pumpkin?
>
> -----Original Message-----
> From:
[email protected]
> [mailto:
[email protected]] On
> Behalf Of Jeff Major
> Sent: Thursday, August 09, 2007 12:32
> To: Electric Vehicle Discussion List
> Subject: Re: [EVDL] Motor Idea
>
>
> Hi Jim,
>
> Yea, some of that steel in there by the shaft is used by the
> magnetics.
> Talking about the inner core of the armature. In fact, sometimes the
> shaft steel itself is in the magnetic circuit.
> Mostly in 2 pole motors,
> not so much in the 4 pole variety. The steel in the armature core
> between the shaft and the slots was called "depth below slots" back in
> my days of magnetism. It is kind of the flip side of the steel in the
> frame between the poles. You need it.
>
> There are motors with big old holes all the way thru the center. Most
> of these will have pretty high pole counts. 8, 12 or 16 poles. With
> more pole pairs, you need less back iron and depth below slots. But
> you have some adverse affects, ie higher frequency.
>
> Regards,
>
> Jeff M
>
>
>
> --- Jim Husted <
[email protected]> wrote:
>
> >
> > --- Jeff Shanab <
[email protected]> wrote:
> >
> > > What if the typical 9" was available with a
> hollow shaft large
> > > enough to pass a decent size axle shaft through.
> A little spline on
> > > the inside, fact gear, or taper cups and you
> could take two motors
> > > and a shaft with a yoke on one end and a
> threaded nut on the other
> > > and assemble it and quiet easily un asemble it.
> >
> > Hey Jeff
> >
> > The problem is that the bore holes used in these
> motors is just 1
> > 3/16th for the 8" and 1 3/8th" for the 9's (from
> memory). Boring out
> > a hole through the shaft would leave very little
> material left to keep
>
> > the armature where it's supposed to be (centered
> inside).
> >
> > I would suspect that increasing the shafts
> diameter to lets say a
> > couple, three inches would change the properties
> of the armatures as
> > the laminations would loose a lot of their mass.
> I'd like to hear
> > from Lee or Jeff as to if or by how much this
> might effect the
> > armature if one were to increase the lamination
> hole size while adding
>
> > nothing to the diameter or length.
> >
> > Anyway that's my take on it (for now) lol.
> >
> > Cya
> > Jim Husted
> > Hi-Torque Electric
> >
> >
> >
>
>
>
>
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