Teletype

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Tue Jun 3 18:24:00 2003

> Hi
> One could buy a new pulley and add some additional capacitance

IIRC, the coupling between the motor and the rest of the mechnism
consists of a pair of helically-cut gears on the end of the motor (one on
the motor spindle, the other on a separate spindle). The driven gear is
moulded integrally with a sprocket for a toothed belt that goes to a
larger sprovket on the transmitter shaft.

The gears are almost certainly custom parts and would not be easy to get
now (unless you know of a souce of Model 33 parts...). Making them would
also be non-trivial, I think, at least in most home workshops.

> to the motors capacitor and it might work well at 50Hz. I don't
> think I'd run it too long without the capacitor increase. They
> run the motor hot at 60Hz. It'd be even hotter at 50.

I thought that at least some of the Model 33 motors were used on both 50
and 60 Hz, with just a gearing change. I know that UK Model 33s have 115V
motors and an autotransformer in the stand -- if there was a 50Hz motor,
I would have thought it would have been wound for 230V.

-tony
Received on Tue Jun 03 2003 - 18:24:00 BST