After we will have chosen the type of preferred shaft material, we will choose the correct arrow spine that is suitable to our bow. In choosing the correct spine weight you should consider draw length and style of release. To such reach the charts often results of scarce utility. To find the optimal arrow spine, we should, initiallyÉ perform a Bare Shaft Test.

Bare Shaft Test
Shoot an arrow without feathers to a target placed at 5 meters (16 feet); if the arrow shoots to the left (point at left ten nock) the shaft is too hard. If the arrow flies to the right, the shaft is too soft. Obviously, for a left-handed archer the results are reversed because the arrow shelf is reversed.

The arrow point should be lower than the nocking point if we shoot off arrow shelf rest.

When you find the shaft that impacts the target in a straight line you will have found the correct shaft for your bow and shooting style.

Other Spine Considerations
Remember, that the same shaft becomes softer if longer and more rigid if shorter. It will become stiff with a lighter point and it will soften with a heavier point. My advice is to let the arrow be longer than your full draw length, at least, one inch longerÉ out of the bow.

When the arrow spine is correctly matched to the bow, the arrow will have a flatter and clean trajectory. You will also be able to reduce the size (and therefore the breaking effect) of the feathers. Reducing the feather size will increase arrow speed.

My advice to whoever is fairly convinced of the own choice and is shooting not with broadhead, to apply shorter feathers (3'' under 40 pounds draw weight and 4'' for bows from 40 to 55 pounds, and 5'' above 60 pounds draw weight) gluing them right along the axle of the arrow. The feathers could have different bending to second that they derive from the right or the left half of the original wing. It doesn't exist a relationship between the bending of the feathers and the hand used from the archer but it is necessary that the three feathers on the same arrow have the same verse. Filippo Donadoni Traditional Archery Shop sells natural feathers because plastic ones will have a negative impact on accuracy. Shooting off the shelf in a traditional bow with plastic vanes is not recommended. The plastic vanes are not forgiving like real feathers and the rigid ness of the plastic causes erratic arrow flight.

If arrow shafts do not have the proper spine, and the arrows have erratic flight, bigger feathers glued in a helical way can improve arrow flight. HoweverÉ larger feathers have a negative braking impact on arrow flight, which increases the parable. A better solution than larger feathers would be to find the correct arrow spine.

Remember that the bending of the shaft is influenced by the weight of the arrow point, thereforeÉ a shaft spine could be perfect with a point and not adapt with an other point weight.

Conclusion; if we notice some disbandment of the arrow in flight in its vertical flight, it will be a problem of the nock point and we will move it up or down until we improve the vertical flight If there is erratic arrow flight in the horizontal direction, either left or right, it could be a problem of shaft spine. If we have concurrent arrow flight problems in the vertical and horizontal and the arrow flies in an elliptical flight, like a corkscrew, then we could have both problems: improper spine and incorrect nock point.

Of course, if the point of support of the arrow on the bow is correct.

Contact us

Our hotline is available 24/7