Rotating nock for tuning?
02-24-2006 | 02:39 PM
#11
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RE: Rotating nock for tuning?
ORIGINAL: Black Frog
Actually there's 6 positions for the nock compared with standard fletching. The nock can be flipped 180* on each fletch, and yes it can make a difference....
Actually there's 6 positions for the nock compared with standard fletching. The nock can be flipped 180* on each fletch, and yes it can make a difference....
02-24-2006 | 03:45 PM
#12
Giant Nontypical
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From: Jackson, Missouri
RE: Rotating nock for tuning?
The info I got states that rotating the nock moves the stiff side of arrow to best position
02-24-2006 | 04:06 PM
#13
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RE: Rotating nock for tuning?
ORIGINAL: Greg / MO
That thought completely escaped me in thinking of what advantages simply turning the nock would give you!
The info I got states that rotating the nock moves the stiff side of arrow to best position
Ok, on a serious note...I’m no expert, but this is how I see it for example purposes. Visualize having an arrow supported at both ends and hanging a weight from the middle of arrow shaft. To help visualize this example, pretend the arrows are already fletched with cock vane is in the up position, while the arrow is being supported and no rotation allowed. Now out of 12 arrows each arrow will “sag/deflect” in center just below weight at different amounts. You want to make this “sag” as equal as possible. The way I visualize it is to exaggerate the numbers. If each arrow sags at a different rate that would be like shooting a 400 spine arrow on one shot, then a 380 spine arrow on another shot and a 420 spine arrow on the third shot, etc. Thinking of the way the fibers are woven and layers of the arrow over-lap each other will cause an arrow to have a soft and a hard side. If you rotate shaft so all “stiffer sides” are in the same place this makes each shot more consistent because you are getting the spine of arrow to react the same shot after shot. Metals can do the same thing based on how the heat treatment was received from each material that makes up your finished product.
Now take that and think of it as the arrow and nock being nocked (attached) on the string with cock vane up. You can rotate shaft to get the same results. You can also rotate nock when it is not attached to string and when you go to attach it to string it will have to rotate the shaft in order for the nock groves to slip around the string. You're basically rotating the shaft of arrow 120 degrees each time to find the sweet spot of arrow spine or place the stiffer side of arrow to the same position for all 12 arrows. If that doesn't give you the results you're looking for, then as stated above, rotate the nock 180 degrees and start over on each 120 degree vane position. Remember there are 360 degrees in a full circle, so each vane is 120 degrees apart. The best way to do it is like Arthur said...before fletching. That way you can get within 1 degree accuracy. Does that help?
