[JPsuff]

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Frequency measurements are another one of those things that require another thing to go with it in order for them to have any relevance like Space / Time. (You can't have space without time, nor time without space).

Just putting a shaft in a frequency analyzer without first "spining" it is essentially pointless. I'm no big fan of spining, but it does have its merits. All metal shafts are welded together and thus have a spine and like most welded objects, the weld itself is often stronger than the material it joins and as such, the weld will be stiffer than the body of the shaft.

So it stands to reason that if you're going to measure shaft frequency, you should do so with the weld (spine) of each shaft oriented in the same position for each reading. Then those shafts need to be installed into the clubhead with the spine oriented in the same direction (whatever that may be) for each clubhead. Otherwise, the whole frequency matching idea goes out the window.



-JP