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TAC 15/15i Basic Unpublished Information
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<blockquote data-quote="Super 91" data-source="post: 491381" data-attributes="member: 31217"><p>Jon, there are a few things I wold like to speak about here.</p><p></p><p>First, I personally have never gone by the fraction as a way to measure a shafts OD. Many time the fraction is not the OD of the shaft, but actually the inserts outer edge. Sometimes the inserts outer edge has a "flare" to it to make it ever so slightly larger than the shaft. Then the point needed to match that "flare" will be what the manufacturer recommends such as 11/32 or whatever so that the field point or broadhead does not hang over or be smaller than the insert. </p><p></p><p>All shafts are measured in their spec sheets in decimals such as the ID of .300 and OD of .375. This gives you an idea of how many layers the shaft wall is made up of if the shaft is wrapped. Since PSE is a filament wound shaft, you would just know the overall thickness of the wall of the shaft. If you notice, the insert protruded ever so slightly past the shafts outer wall. Take a caliper or micrometer and check this and you will see the edge of the insert is 11/32 and the shaft wall is slightly less.</p><p></p><p>This OD number does not correlate with the spine deflection. The fact that at times they do end up the same is mere coincidence. Here is a chart for a Carbon Express arrow called the blue streak.</p><p></p><p>SPECS - Maxima Blue Streak™ Select </p><p></p><p> Model GrainsPerInch Spine Diameter</p><p>250 7.4 0.413" 0.290 </p><p> 250 7.4 0.413" 0.290 </p><p> 350 8.3 0.347" 0.295" </p><p> 350 8.3 0.347" 0.295"</p><p>Notice how the spine and OD are very different. </p><p></p><p>The other thing is most people consider a shaft to be extremely straight at .001. Trophy Ridge has a Crush arrow that is in such high demand I cannot get any till close to Fall. They have a straightness tolerance of .0008 and are a smaller diameter shaft with a half in/ half out insert which makes it much wider in diameter than the shaft itself. </p><p></p><p>Just some observations on my part. Nothing set in stone of course. And I will volunteer provided we get within acceptable and comparable specs to the TAC shaft.</p></blockquote><p></p>
[QUOTE="Super 91, post: 491381, member: 31217"] Jon, there are a few things I wold like to speak about here. First, I personally have never gone by the fraction as a way to measure a shafts OD. Many time the fraction is not the OD of the shaft, but actually the inserts outer edge. Sometimes the inserts outer edge has a "flare" to it to make it ever so slightly larger than the shaft. Then the point needed to match that "flare" will be what the manufacturer recommends such as 11/32 or whatever so that the field point or broadhead does not hang over or be smaller than the insert. All shafts are measured in their spec sheets in decimals such as the ID of .300 and OD of .375. This gives you an idea of how many layers the shaft wall is made up of if the shaft is wrapped. Since PSE is a filament wound shaft, you would just know the overall thickness of the wall of the shaft. If you notice, the insert protruded ever so slightly past the shafts outer wall. Take a caliper or micrometer and check this and you will see the edge of the insert is 11/32 and the shaft wall is slightly less. This OD number does not correlate with the spine deflection. The fact that at times they do end up the same is mere coincidence. Here is a chart for a Carbon Express arrow called the blue streak. SPECS - Maxima Blue Streak™ Select Model GrainsPerInch Spine Diameter 250 7.4 0.413" 0.290 250 7.4 0.413" 0.290 350 8.3 0.347" 0.295" 350 8.3 0.347" 0.295" Notice how the spine and OD are very different. The other thing is most people consider a shaft to be extremely straight at .001. Trophy Ridge has a Crush arrow that is in such high demand I cannot get any till close to Fall. They have a straightness tolerance of .0008 and are a smaller diameter shaft with a half in/ half out insert which makes it much wider in diameter than the shaft itself. Just some observations on my part. Nothing set in stone of course. And I will volunteer provided we get within acceptable and comparable specs to the TAC shaft. [/QUOTE]
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TAC 15/15i Basic Unpublished Information
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