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Old 01-05-2002, 09:13 AM   #1
LBR
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Default 2512 Spine

After reading the "Black widow spine formula" thread, I shot some 2512 Super Slams off my Hunter I. I don't know what they spine, but they flew like darts (32" long, 100 grain points). Just wondering if anyone knows the spine on these.

Chad
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Old 01-05-2002, 09:49 AM   #2
 
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Default RE: 2512 Spine

Chad,
According to an old Easton chart I have: 47-62 lbs in the recurve column @ 32" long.
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Old 01-05-2002, 02:38 PM   #3
 
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Default RE: 2512 Spine

Chad, I think a 2512 at 32" with 100gr head would be just about 57-62#. They have the same approximate deflection as 2219s.

Edited by - Floxter on 01/05/2002 15:43:24
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Old 01-05-2002, 03:55 PM   #4
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Default RE: 2512 Spine

Dynamic spin or static spine?

2215's have a static spine of about 80#. 2413's are around 90-95#. I think 2512's are in the 100# range.

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Old 01-05-2002, 05:39 PM   #5
 
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Default RE: 2512 Spine

JRW, that's a dynamic spine of about #57-#62. If the shaft alone were spined on traditional 26" centers it would probably be about #95 or the same as 2219s. Easton however spines their shafts on 28" centers I'm pretty sure. Had this pointed out to me recently and it explains why I could never get the Easton charts to work with a traditional bow.

Jack

Edited by - Floxter on 01/06/2002 21:59:36
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Old 01-05-2002, 05:56 PM   #6
 
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Default RE: 2512 Spine

I guess I should expand on my earlier post. According to the Easton chart I'm looking at, a 2512 @ 32", with a 100 gr point, is the preferred selection for three draw weight ranges for a recurve. They are: 47-52,52-57, and 57-62 lb. As we all know these are starting points, not written in stone, with many factors contributing. And Chad, this is probably a lot more than you wanted to know.
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Old 01-05-2002, 06:15 PM   #7
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Default RE: 2512 Spine

I dont have the deflection for the 2512 but I do have them for the 2215's and the 2413's

2215 deflection is .343 76lb spine
2413 deflection is .305 87-88lb spine

there is a formula to figure the deflections out...got it stuck on the tip of my tounge..will post it when I can spit it out <img src=icon_smile_wink.gif border=0 align=middle>!
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Old 01-05-2002, 06:34 PM   #8
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Default RE: 2512 Spine

brain fart, the formula is something else....it is for deflections but for woodies and spines OOPS <img src=icon_smile_big.gif border=0 align=middle>!
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Old 01-05-2002, 11:03 PM   #9
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Default RE: 2512 Spine

Thanks guys--I was actually looking for the spine as compared to wooden arrows (static?)

Chad
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"We can have no '50-50' allegiance in this country. Either a man is an American and nothing else, or he is not an American at all."-- Theodore Roosevelt

A wise man's heart is at his right hand; but a fool's heart at his left. Ecclesiasties 10:2

The last four letters in American..........I Can
The last four letters in Republican........I Can
The last four letters in Democrats.........Rats



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Old 01-05-2002, 11:09 PM   #10
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Default RE: 2512 Spine

hey Chad, bet ya Troy gag gag Breeding has it. I have a list but I dont have a 2512 on there.
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