how do I detemine spine?
#1
Thread Starter
Spike
Joined: Apr 2007
Posts: 80
Likes: 0
From: Rockbridge co. VA
I want to make the switch to wooden arrows, and not sure what my spine group would be. I have a 27in (maybe slightly less) draw and a 50# (slightly less) bow. Not sure how to determine my spine group. any help appreciated. thanks.
#2
Fork Horn
Joined: Dec 2007
Posts: 119
Likes: 0
From: Kansas
you need to know your exact draw length and weight. from the sounds of it you need a 50-55# spine rated shaft. but then you also throw in the weight of your point and that can also move you up or down a spine rating.
#3
To tell you the truth, I would call either the bow maker,or the arrow maker that you are going to use. You'll get a lot of different answers here. Even then depending on your release, you'll have only a starting point.
#5
Joined: Oct 2007
Posts: 49
Likes: 0
From: Ontario,Canada
Take it to a bow shop.my shop has a rig that figures it all out.they put the bow in the rig and put a scale on your string and pull down on it to your draw length and presto you have your correct spine.
#6
ORIGINAL: wade7575
Take it to a bow shop.my shop has a rig that figures it all out.they put the bow in the rig and put a scale on your string and pull down on it to your draw length and presto you have your correct spine.
Take it to a bow shop.my shop has a rig that figures it all out.they put the bow in the rig and put a scale on your string and pull down on it to your draw length and presto you have your correct spine.
#7
Dominant Buck
Joined: Feb 2003
Posts: 26,274
Likes: 0
From: land of the Lilliputians, In the state of insanity
For trad bows, I get the shaft that is closest to the weight of the bow at my draw lenght. I have them cut on the long side so I can cut them down. I then bare shaft test them agianst fletched ones. I then adjust length to the head I want to use. I do this with wood, carbon or alluminum. Havent used wood in year, many many years, but that is how I do it.




