Sorry for the late replies guys, but now getting back to this, went=20
through the replies, and did a few more tests.

Both caps were previously tested by a local shop that has a capacitor=20
tester, so that's good to go.
I found and checked the inertial switch and that seems to be making=20
proper contact and non-contact as necessary.
Motor will not run even with a push.

I've unable to go over regularly for a few weeks, but one of the parents=20
knows someone who repairs motors, so that's our next step -- puling out=20
the motor and sending it to them.  The teacher is going to do that in=20
the interim.

Much thanks,
-Neil.



On 3/26/2015 7:50 PM, RussellMc wrote:
> This has been covered in various posts but not in quite as "linear" a
> fashion as below.
>
> As with all situations that bring you in contact with or too-near
> may-soon-be-rotating machinery, life and limb is at risk. You know that.
> DTTAH, YMMV, IANAL, AC&NR, E&OE, Carpe Diem, Carpe Chuck (see below),
> Caveat Emptor.
>
> You have 5 main components: start winding, run winding, start cap, run ca=
p
> and switch.
>
> Dead main winding or main cap is fatal to running.
> Dead start winding, start cap , switch is fatal to auto starting.
>
> Dead main winding or cap MAY give a kick at some stages due to start
> winding interactions but probably not.
>
> As  main winding and main cap are always in circuit when running, and
> nothing else is, if these two are OK then once running it will run OK.
> SO:
>
> Lock students out of room so they will not see you do this :-) :-(.
> Maybe one trusted helper OK.
>
> Be able to apply power in a trice and,
> Spin chuck by hand as fast as possible and at peak speed apply power.
> AND / OR ((even) riskier:
> Apply power & then twist chuck fast by hand.
>
> Try this several times if necessary.
> If no inclination to run it's probably main  winding and/or cap.
> It should hum not necessarily quietly to itself wit power on and not
> rotating.
>
> Lifetime of components when not rotating is unknown.
>
> A motor may be started in this manner indefinitely - 20+ (30+?) years
>   operation may happen. Ask me how I know.
> (Cheap drill press, bought at a sale long long ago, good value at the $,
> found to have dead start circuitry after purchase. Just used it ever sinc=
e.)
>
> If the above does not work in any way I'd expect the main power circuit t=
o
> be dead in some manner.
> If it did work I'd expect the start circuitry.
> I may be wrong.
>
>
>
>              Russell

--=20
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