[GreenKeys] Does anybody know? Is a M14 sync motor the same, > as M15?

[John Nagle]

> From: David Burns<dvdbrns at rcn.com>
> Subject: [GreenKeys] Does anybody know? Is a M14 sync motor the same
> 	as M15?
> To: greenkeys at mailman.qth.net
> Message-ID:<4F50014D.8060700 at rcn.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> There's an (expensive?) GE sync motor on a mounting platform (ebay
> #270925735155).
>
> 1. Is the pinion gear the same as would be used on a M15?

     Maybe.  Usually the motor pinion and its mating gear
are a set, because that determines the machine speed.
The pinion is removable with appropriate gear-pulling
tools.

> 2. Is the mounting platform the same as M15?

     Yes.

> 3. Is the motor the same?

     It's compatible.  The motors are compatible
from 1924 to 1959.  However, the later ones have
better insulating materials.  There's a centrifugal
starting switch in the things, and it tends to be
the first part to fail.  A failed centrifugal
switch produces arcing while running, not just
briefly at startup.  Also, the insulation on the
early models can deteriorate.

     I have one that needs a centrifugal switch
repair, if anyone wants it.  It will run, but
produces ozone.

> Asking $49 is pricey, isn't it?

     If they'd power it up and indicate whether
it runs properly, it is.

				John Nagle