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

Chad,
According to an old Easton chart I have: 47-62 lbs in the recurve column @ 32" long.
Darrel

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

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.

JRW

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

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.
Darrel

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>!

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>!

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

Chad

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