[GreenKeys] Model 19 Gear Set

[Joe Clanin]

Thank you for the information everyone! It is very helpful.

Best,

Joe


On Sat, Apr 18, 2020 at 2:15 PM Jim Haynes <jhhaynes at earthlink.net> wrote:

>
> > having trouble finding it in any list. The pinion is stamped 74505, the
> gear
> > is 74151.
> >
> 74151 and 74505 are for 60wpm (368 opm) with speed-governed motors.  In
> the older line like Model 15 the speed governed motors are at a different
> speed from the sync motors and require different gear sets.
>
> Model 15 Gear Sets
>
> Set     Gear    Teeth           Pinion  Teeth   OPM     WPM     Motor
> 80437   74913   30              74912   7       368     60      60 Hz Sync
> 96535   91287   24              91286   7       460     75      60 Hz Sync
>
> 84042   84019   25              84018   7       368     60      50 Hz Sync
> 107474  107460  20              107461  7       460     75      50 Hz Sync
>
> 84042   84019   25              84018   7       368     60      25 Hz Sync
> 107474  107460  20              106461  7       460     75      25 Hz Sync
>
> 80374   74151   35              74505   7       368     60      110 AC
> Series
> 96536   84106   32              84105   8       460     75      110 AC
> Series
>
> 80374   74151   35              74505   7       368     60      110 DC
> Shunt
> 96536   84106   32              84015   8       460     75      110 DC
> Shunt
>
> 80374   74151   35              74505   7       368     60      220 DC
> Shunt
> 96536   84106   32              84105   8       460     75      220 DC
> Shunt
>
> All governed motors used an 87.6 vps tuning fork for the speeds indicated.
> Note use of same gear set for 25 and 50 Hz sync motors, which means that
> the 50 Hz motor is four-pole and the 25 Hz motor is two pole, so they
> run at the same speed, 1500 RPM.   The governed motors all run at 2100
> RPM.
>
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