how many dimples on a golf ball
Most balls on sale today have about 300 to 450 dimples. There were a few balls having over 500 dimples before. The record holder was a ball with 1,070 dimples — 414 larger ones (in four different sizes) and 656 pinhead-sized ones. All brands of balls, except one, have even-numbered dimples. The only odd-numbered ball on market is a ball with 333 dimples. Officially sanctioned balls are designed to be as symmetrical as possible. There was a ball that had six rows of normal dimples on its equator, and very shallow dimples elsewhere. This asymmetrical design helps the ball self-adjust its spin-axis during the flight. The USGA did not sanction it and changed the rules to ban aerodynamic asymmetrical balls. The ball supplier sued the USGA and the USGA paid US$1.375 million in an out of court settlement. (clipped from Wiki, at http://en.wikipedia.
See http://en.wikipedia.org/wiki/Golf_ball#Design “Most golf balls on sale today have about 300 – 450 dimples. There were a few balls having over 500 dimples before. The record holder was a ball with 1,070 dimples—414 larger ones (in four different sizes) and 656 pinhead-sized ones. All brands of balls, except one, have even-numbered dimples. The only odd-numbered ball on the market is a ball with 333 dimples, called the Srixon AD333.
