Ed,
CPM equals CPM regardless of steel, graphite, titanium or fiberglass. A steel shaft oscillating at 250 CPM is the same stiffness as a graphite shaft oscillating at 250 CPM, assuming identical measurement methods. If the tip section profiles of the two shafts are different then the two shafts will behave differently. The different weights of the two shafts will also greatly affect the feel of the shafts. This would be equally true of two different graphite shafts of different weights and different tip section profiles but with identical butt section frequency measurements. That being said I don't believe that there is any "rule of thumb" equivalency formula to compare shafts made of different materials.
Rich "Mac" McHattie
Mac's Golf
- ShopTalk: Steel vs. Graphite CPMs - Rule of Thumb? Ed Reeder
