ActingLikeAKid
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- Nov 16, 2015
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This struck me the other day ...
"Standard" motor sizes are, if I'm recalling correctly ...
13mm, 18mm, 24mm, 29mm, 38mm, 54mm, 75mm, 98mm, 150mm
...Why? Was this based upon existing tooling for other applications? Have these sizes always existed? I seem to recall hearing about some oddball motors (22mm?) from the 70s, but since I was a kid in the 80s, it was always 13 and 18mm and occasionally 24....
Is this just something Vern Estes decided upon?
Inquiring minds & all that....
"Standard" motor sizes are, if I'm recalling correctly ...
13mm, 18mm, 24mm, 29mm, 38mm, 54mm, 75mm, 98mm, 150mm
...Why? Was this based upon existing tooling for other applications? Have these sizes always existed? I seem to recall hearing about some oddball motors (22mm?) from the 70s, but since I was a kid in the 80s, it was always 13 and 18mm and occasionally 24....
Is this just something Vern Estes decided upon?
Inquiring minds & all that....