Main Discussion Area > Arrows
What shafts for my bow?
JW_Halverson:
Yup, it sure will. Imagine taking that dowel and putting the point out in front of you and pushing as hard as you can into thin air. Kinda like using a fencing foil to make a thrust. Ok? Stays straight.
Now put the point against the wall and begin to push. Resistance will "push" back against the force you are applying at the other end. Because the wall has a heck of a lot more resistance than the spine of the arrow can stand, something has to give.
The point on the arrow adds resistance in the form of inertia. Bodies at rest tend to stay at rest, bodies in motion tend to stay in motion. When the string pushes the back of the arrow, the inertia of the point resists and the arrow will bend as much as the "spine" allows. When the spine of the arrow matches the bow nicely, the arrow coils up like a snake, snaps off the string and recovers really quickly and flies straight.
Thank you for attending Physics 101, I am your substitute teacher, John.
sailordad:
excuse me proffessor John ;D
i do gotta say tht is got to be one of the nicest and easisit explanations of how spine works
nicely said ;)
colejack3:
Sweet thanks. I have new info. My bow is 42 at 26. So what spine weight shafts and feild point weight will I need. And how long should the arrow be? Thanks
colejack3:
anyone? please help
Justin Snyder:
Cole, a good place to start is 28" arrow spined at 40# with a 125 gr point.
What John said is a good way to adjust the arrows to the right spine. Another way is to start with the spine a little stiff. You put the points and nock on and start shooting the arrows. To reduce the spine you use a piece of sandpaper to sand wood off the middle or back half of the shaft. Keep sanding and shooting until the arrow flies straight off the bow.
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