| The trouble with an ACE shaft is that the archer presumes the shaft to be uniformally round along it's length. It is not. Despite best practice by the arrow manufacturer, from all the ACE's I have had, when put through a spine tester/arrow straightener, the *clock* follows a rugby ball shape.
An archer when using an ACE must ensure that a measure of inch deflection is noted upon the arrow, and to the best of their ability by using a spinecheck/straightener, mark each arrow witht he measured deflection. At either the maximum or minimum deflection point, the archer should place this *nodal* point upon the pressure button and fletch accordingly. Only then will the archer achieve something like uniformity in bare shaft tuning. If this *Nodal* point is not found, then it is most probable, that the archer will have different bare shaft results from the same *matched* set of shafts. It might also happen that an archer, even with finding the nodal point will unwittingly shoot against or with the weld of the inner aluminum core. It could be that for some archers, they are not aware that their arrows are rugby ball shapes and hence when bare shaft tested, the position of the *turn of the arrow* will show up spurious results and lead an archer into not trusting the bare shaft tuning method.
In an ideal situation, the archer should shoot each and every ACE arrow out of the matched set bare shaft, and turn the unglued nock to get each arrow to group witht he one shot before. It can take a good two hours to bare shaft tune a dozen matched ACE. When this is done, then the arrows can be fletched. For an archer to get the best from any set of arrows, alloy or carbon, they should all be shot as bare shaft and matched accordingly.  |