[GreenKeys] 14-15-19 Etc. motor

[Ralph Irish]

We had a summer cottage in Canada, near Lake Erie.  Our cottage was about one mile from the
city of Colechester.  I have vague memories of walking to Colechester for an ice cream cone,
when the nearby store was out of ice cream!  My older sister and a good family friend and I
made the trek more than once.

At that time, in the 1940s, Canada, or that part of it was running on 25 Hz.  Many people not
knowing better, brought some appliances to Canada for 'summer use' and in short order they were
ruined.  It seems to me that the NTSC video standard sort of relied on a source of 60Hz (or
60 Cycles, back then) to create the 15,750 Hz sweep freq and some other 'standards' required
for proper operation.  US TVs also failed miserably.  Not enough iron in power transformers and
a lack of 60 Hz to 'tap off' for various parts of the signal envelope.  

Washing machines, power drills, electric mixers, etc.  All either burned up or otherwise failed
to total failure.  The only thing we brought with us was an AM Radio, and it, too, had some
problems.  It would fail or start acting funny after an hour and it was much hotter than the
ambient temp would make it.  So, it was a half hour on, and off for about an hour.  Eventually,
my parents taught my older sister and me how to play Pinochle, Hearts and Crazy 8s, so that
there was something to do between sundown and bedtime.  Our younger sister spent a lot of time
in her playpen, since she could walk/run and would be far away in seconds, it seemed, so she
required a lot of supervision, as well.

Lots of memories of 70 years back!

Ralph - W8ROI

- - - - - - - -


On Jul 5, 2018, at 6:44 PM, Bob kb8tq wrote:

> Hi
> 
> Most of upstate New York and parts of southern Ontario had 25 Hz for quite a while. Some very big industrial users had major capital investment in *big* 25 Hz gear. 
> 
> Bob
> 
>> On Jul 5, 2018, at 5:58 PM, Bruce Gentry <ka2ivy at verizon.net> wrote:
>> 
>> A frequency change in the Los Angeles area took place in the 1930s, and provided many short term jobs for the unemployed.  Each person was trained to convert a few models of clocks, and once the work was done, they were allowed to keep their tools. I think the utilities paid them, state laws usually require utilities to modify or replace equipment if a frequency change or elimination of DC occurs.  I wonder if Hoover Dam had an effect on the frequency change?  We had 25 and 60 cycles here in Syracuse, as well as DC until 1953. There were many electric clocks here that used a universal motor to wind a balance wheel movement, as well as phonograph turntables with universal motors and mechanical governors. I can't see why a governed series motor in a Teletype couldn't run on 25 cycles, does anyone know of it being done?
>> 
>>      Bruce Gentry, KA2IVY
>> 
>> 
>> On 7/5/18 4:44 PM, Richard Knoppow wrote:
>>> Made a big market for electric clocks.
>>> 
>>> On 7/5/2018 12:46 PM, Jim Haynes wrote:
>>>> It's really quite simple.  The 50 Hz motor will turn at 1800 rpm when
>>>> powered by 60 Hz.  The only difference in the motors is the extra iron
>>>> ne
>> 
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