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Old 04-22-2010, 03:38 AM
duffy4 duffy4 is offline
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Default Arrow spine for 50 lb. recurve?

I haven't hunted with a bow in a lot of years. Down in South Australia I have bought a "Basic Hunting Permit" that allows me to hunt all sorts of "feral" critters.

A permit for a gun and buying a gun requires one to go through a lot of hoops, while standing on a tight rope juggling. But I can hunt with a Bow and arrow without any permits.

So I bought a takedown recurve, arm guard and shooting glove. then I picked up two cheep allum. arrows (2317).

The bow is 50 lb. pull.

What spine arrows should I be shooting on this bow? String length is 146 cm and my draw length is a little under 28 inches
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Old 04-22-2010, 06:34 AM
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catnthehat catnthehat is offline
 
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IIRC you take your bow weight and subtract/add 10 lbs. of spine for every inch of draw, then add 10 lbs. for the broadhead.


IE. 27" would be 40lbs., then back up to 50 lbs. for your broad head.
Then add and other 10 lbs because you ant to shoot an 1" longer arrow.
For arrow weight, use 100 grains of arrow for every 1lb. of bow draw, then add 100 for the broad head, and another "just because".
I like to shoot HEAVY arrows!
However, Ii have seen different systems as well....
Cat
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Old 04-22-2010, 07:18 AM
russ russ is offline
 
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2314's are way too stiff. For example I just ordered some arrows for a friend and he's 28" & 55 lbs with a t/d recurve and the best starter selection for him was a 2212 or better yet a 2114 both choices were with a 125 gr b/h & I believe a 30" cut length. (As far as I can recall)

These choices were made from strictly a spine point of view w/o taking mass into the equation since I'm building the arrows so that he can shoot bowbirds with his son. However, a straight flying arrow will outperform a heavier crooked flying shaft any day of the week.
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Old 04-22-2010, 08:06 AM
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Rocks Rocks is offline
 
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This will give you some idea:
http://www.eastonarchery.com/products/selection
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  #5  
Old 04-22-2010, 08:30 AM
russ russ is offline
 
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wow, my numbers are way off - I think I need to shove someone's software into an orifice.
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  #6  
Old 04-22-2010, 09:36 AM
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jim-bo jim-bo is offline
 
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most arrow manufactures will have charts availible on their websites. That being said length of arrow, tip weight and draw weight are the biggest factors in arrows spine. You can shoot the arrows that you have (although some may not agree with me), they will not properly flex around the bow (archers paradox) and will shoot to the left because they are spined to heavily. Or you can buy the proper arrows for your set up, this will make you more consistant and eventually with practise... accurate.
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