Hi All, I am working on a book regarding a famous fly fisherman that invented and made a fly rod out of wood more than 100yrs ago that cast a distance we still cannot match today, he was also a great violin maker/player and tuned his rod as he would tune his violin. Now bearing in mind a fly rod is tapered he managed to find the same vibration throughout the rod, he quotes. It is possible to find the action on a fly rod mathematically with no guess work. The balance of my rod - the "Grant Vibration Rod" - is made on the principle of vibration, complete in itself, with power for weight, leaving no discretionary power to the maker, and, with the moveable rings adapted to it, and with a correctly tapered line (which latter is difficult for line makers to follow out), the rod, line and rings is one harmonious whole with nothing loose anywhere. A taper on the rod such that the bending stress on the top and bottom fibers was constant along the length of the rod,(this was achieved by making acoustical measurements along the length of the rod). He was a brilliant mathematician and student of Nature that applied his knowledge to fly fishing over 100 years ago, I would be grateful for any input regarding Vibration qualities on a tapered wood and what pitch he would have listened for, I know he used a tuning fork along the length of the rod to get the same pitch. Thanks Gordon.