Arrows

[bowhunter44]

I have a question about arrows. Recently I have arrived at the conclusion that I should be evaluating arrows that I buy (or don't buy as the case may be) for spine consistency. The problem is that spine consistency data is a little tough to come by. What I have been able to find thus far is that Carbon Express "spine select" shafts have a tolerance of +/- 0.002" in any given dozen arrows. This information came from a phone call to their tech. support. Other than that as information goes nada. In fact, on a phone call to another arrow manufacturer (a LARGE arrow manufacturer), I was told that they didn't have that particular data! Yeah right!! Anyway, my question (finally) is, does anyone out there in cyber land have spine consistency data on various shafts?

Thanks!

[BT]

That is why I only buy select shafts
Without a spine tester....you'll never know
with a +/- of .003 you are looking at a total run out potential of .006 and for a .006 variance ....

All you can do is invest in a spine tester and start batching arrows as you sort through each new dozen.
To be totally honest....unless you are going through 10 dozen arrows a year....you wont make up the cost of the good tester and thats why I buy selects

[bowhunter44]

Are selects still made?

I have checked into a tester and they certainly don't give them away. Well, at least the ones that don't look cheesy. I was kind of hoping there was someone out there that had a spine tester and readily available data...

[SPIKER]

Here's a post from another site. This guy has a spine tester...
-----------------------------------------------------------------------------------

"Using my RAM spine tester here are the numbers I got for dynamic spine on my brand new dozen Maxima 3D selects."

1. 78-80
2. 75-80
3. 70-78
4. 77-89
5. 76-81
6. 76-81
7. 80-83
8. 76-83
9. 76-86
10. 80-84
11. 74-79
12. 77-84

The variance is actually in thousandths or .001. I just made them whole numbers for readability.

Heres the actual measurements:
1. .322-.320
2. .325-.320
3. .330-.322
4. .323-.311
5. .324-.319
6. .324-.319
7. .320-.317
8. .324-.317
9. .324-.314
10. .320-.316
11. .326-.321
12. .323-.316

[bowhunter44]

Thanks SPIKER. I have a question about the data. The first entry is 0.322-0.320. How was this data point obtained? It is the deflection of arrow number 1 followed by arrow #2? Or is it two different data points within the same arrow?

I don't know all of the arrows that CX has listed in their "select shaft" series. I do believe that the Maxima's are 'select shaft'....

[bowhunter44]

I have bugged one of the Techies from Easton until he has promised me some spine tolerance data. When (or perhaps IF) I get said data I will pass it along...

[BT]

Sorry...I have to leave but to answer one question....the CX terminator light selects may be an arrow that meets the best of all worlds for you.
Maybe.....I am assuming

[bowhunter44]

I have looked real hard at the CX Terminator Light shafts. I'm not done looking at them either. However, the CX 'select shaft' series (guaranteed to be +/- 0.002" in spine tolerance) consists of the Arimid, the Maxima, and two target shafts that I forget their names. I have no idea to what tolerance CX holds the Terminator Light shafts. But the do look pretty close to the best of all worlds for my application.

[SPIKER]

Apr 19, 2008 14:04:32 GMT -5 bowhunter44 said:

Thanks SPIKER. I have a question about the data. The first entry is 0.322-0.320. How was this data point obtained? It is the deflection of arrow number 1 followed by arrow #2? Or is it two different data points within the same arrow?

I don't know all of the arrows that CX has listed in their "select shaft" series. I do believe that the Maxima's are 'select shaft'....

I believe that one reading is the stiff side, and the other the weak...

[bowhunter44]

My dad used to say that it is better to be thought a fool than open you mouth and remove all doubt - but I don't know what a weak side and a stiff side is.... Given that the cross section of an arrow is a circle, I don't even know what a "side" is!