| Re: Proper position of spined shaft?
If you get into the hairiest of mathematics you'll find any shaft has two natural frequencies and they are always located 90 degrees apart on the shaft. At one point you will get one of these frequencies and by rotating the shaft 90 degrees you'll get the other. If the shaft is flexed anywhere in between both frequencies will be excited and the two will beat against one another causing the shaft to wobble. The two frequencies in a steel shaft or a filament wound graphite shaft are generally very close such that very little wobble will occur. In wrapped graphite shafts this is not always the case due to the seam and wobbling can be pretty wild.
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Last edited by tpg1965; 05-14-2006 at 03:20 PM.
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