I'm embarrassed to ask

[Pine]

Well here goes .
2117 aluminum arrows are 70-75# spine .
I can't remember what 2216 aluminum's are .
I'm thinking either 75-80# or 80-85# .
My old K-Mag likes the 2216's and I'm wanting to make some woods for it .
Sense 1973 I have only shot aluminum .
So have a good laugh on me , but I have no charts and can't find on the Internet .
Yeah , I could ask Surewood , but when I feel this stupid , I deserve to share it .

[pinky]

This table was just in an earlier TG thread " starting point for woodies."

 http://www.arrowskp.com/Spine_Charts.html

I think this table has what you are looking for and should help get you close.

good luck.

[sleepyhollow]

I found 2117 are 61-70# and 2216 are 71-80#

[Ironman]

Back in the day I shot 29" 2216  XX75s out of my 72 lb recurve. I love the old aluminum shafts.

[WESTBROOK]

On a spine tester with 26" AMO spread, 2117 spine 77# and a 2216 is 84#  and that agrees with what Stu Millers calculator says they should be.

[Blackhawk]

I thought aluminum and carbon were to be spine tested at 28" while only wood is 26".

Anyone?

[WESTBROOK]

Your right Lon, they are. Generally when you talk pounds though it is usually 26" while 28" measurements are usually in deflection. 2117 = .407, 2216 = .376 pounds at 28"...I dunno..

The carbon spine tester at 28" uses a 1.94# weight. The wood arrow spine tester at 26" uses a 2# weight. They are both measuring the same thing, just in different versions (pounds vs inches of deflection).

Bisch

[elkken]

What weight is your old K mag at 28 " ?? If it shoots 2216's well then it would most likely like 75-80 or 80-85 I'm sure. I shot many 55# bows that 2018's worked well but 2117 and 2216's were a tad stiff. Those bows shot 70-75 woodies very well ...  my draw is 28

[Pine]

Thanks elkken , that's the answer I've been looking for .
Looks like 80-85# , I have tried 70-75 and they are to light . My 85-90s are way heavy .
So I guess it's time to order some Surewood .
Thanks

[Orion]

Graps.  You must be shooting one of the heavier K-Mags ever made.  Don't know what the marked draw weight is, but I suggest you discuss it with the fellas at Surewood when you place your order.