| 摘要 |
<p>A method of custom trimming golf club shafts comprising (i) measuring the frequency of oscillation, fc, of a representative shaft at a plurality of different tipping amounts and effective shaft lengths, (ii) calculating the moment, mc, of the replica shaft for each effective shaft length, (iii) performing a linear regression on the measured frequencies to obtain the coefficients A and B in the form fc=A+C*tipping amount+B*mc, (iv) selecting an inventory shaft having a known natural frequency, fc, at a selected moment, mc, and (v) calculating the constant C=fc-B*mc. The tipping amount is calculated from the equation tipping amount=(fg-C-B*mg) DIVIDED A where mg is the desired moment and fg is the desired natural frequency of a golfer's finished golf club. A length of the narrow end of the inventory shaft equal to the tipping amount is removed and a length of the grip end of the inventory shaft may also be removed if necessary.</p> |
