Dancing Fingers wrote:

I vaguely remember reading that the optimal dimple shape was hexagonal,
rather than round, like the standard golf ball. But the PGA tends to
be conservative in adopting such a radical change. I think spin is
more related to hooking or slicing because golf balls will always
travel further than a comparable spherical ball, without dimples, even
when struck by a machine. The question, for me, is do dimples create
eddy currents of air that reduces drag at slow airspeed? Second, what
is the optimal dimple size relative to the shape of the main body.
Chris


Get a golf ball and measure it.
That's right about optimal dimensions for a golf ball.

The dimples trip the boundry layer at a lower Reynolds Number than
RN(crit) where the boundry layer would separate naturally on a
round (undimpled) ball.

Better?