Re: Reduction by 10

Neither, the circumference of a circle is equal to Pi * D where D is
the diameter. Therefore the reduction ratio is equal to the ratio of
the diameters. So 5/2 = 2.5:1 reduction, 2/1 = 2:1 reduction. The
combination of 5":2":1" would provide a total of 5:1 reduction (2.5 *
2).

~petev

--- In CAD_CAM_EDM_DRO@yahoogroups.com, ccq@x wrote:
> On timing belt setups, does a reduction of 10 requier a 5" wheel
driven by a 2"
> wheel, or would it be 5":2":1"?
>
> Bill
>
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