Arrow spine and arrow location?

[paoloi]

Refresh my memory; if you are a right handed shooter and your arrow is overspined than your arrow will have the tendency to shoot left, right? And then of course the opposite would be true, under spined, shoots right. I ask because I am shooting a hair left. Stu Miller says that if the arrow is over spined raise the brace height, and if under spined, lower the brace height. Therefore I should raise my brace height a hair?

[paoloi]

Oh, I am asking because I just got a new used Dakota Pro Hunter and am trying to get it tuned up to hunt with. I love this bow, shooting good groups, just a hair left.

[Javi]

If it is only an inch or two left at 20 yards then a couple of twists added to the string should "FIX" it.. if it is indeed a spine issue.. You might also cant the bow just a bit more if the string thingy don't help..

[jamesh76]

here is a tuning guide

 http://bowmaker.net/tuning.htm

[Bjorn]

If you are a rightie then left is overspined. I use Javi's method too; and also push more with your bow arm. You can get mixed results with the string thingy depending 'where' you are with brace height.

[Shawn Leonard]

If it is over spined you should lower your braceheight as that increases your power stroke, sorry but use bowmakers tuning guide, Stu will most likely have you overspined! You also can get an opposite result, if you are "way" overspined you can actually shoot right and if "way" underspined you can shoot left for a righty! Shawn

[hkmp5]

Hello Paoloi,
Shooting a little left doesn't neccessarily mean you are too stiff.  If though you mean that the bare shafts hit left of the fletched groups then I would agree you are overspined.

When you have a arrow that is a little too stiff then you do increase your brace height.  If the arrow shows weak then you lower your brace height.  Shawn is correct that lowering the brace height does increase the power stroke but that affect is overshadowed by the increased angle of the arrow at the time of release from the string.  Test it will some bare shafts at long distance and you will quickly see the results.

-Stu