The number of
buckets on a waterwheel is relative to the circumference of the wheel
in feet, and that the spacing for buckets should be about 1 foot apart.
One can use the following in determining the number of buckets (n) in
a wheel. (n) = Pi * (D)iameter of the wheel. Once you know (n) you can
determine the spacing (s) by using s = (pi*D)/n.