ORIGINAL: Coastie
[Beman ICS Classic, all carbon straightness +/-.002"
Beman ICSCamo Hunter, Carbon, +/-.002"
Beman ICS Trebark, carbon,+/-.002"
Beman ICS Hunter, Carbon,+/- .002"
Beman Carbon fiber bonded to aluminum 7075 core tube, +/-.003"
You are correct about the eastons carbon, but the bemans aren't all that bad if you pick and choose, they do have some that are terrible.
These numbers totally contradict (barring the Matrix spec) what I was told by Beman (and not to mention that very very few of the Beman shafts will adhere to the numbers you posted when tested and oftentimes won't meet the numbers quoted to me below)
Here is a quote from a Fax I recieved back from Beman last year
Jeff,
1) The matrix shaft is +/- .003 in straightness on a 28" span.
This is not per inch, but at 28" span.
2) The weight is +/- 3.0 grains per dozen. Beman does not
advertise their weight and straightness tolerances. It really depends on
what model you get that will determine the weight and straightness
tolerances. In Beman the weight tolerances can range anywhere from +/-
5.0 to +/- 1.5 grains per dozen. The straightness can range from +/-.003
to +/- .014. Usually the lower costing shafts will have lower
tolerances, but tend to be more consistent weight wise.
In Easton the straightness tolerances range from +/- .004 to +/-
.005, pretty good. The weights on the all carbon from Easton range from
+/-1.0 grains to +/- 5.00 grains. When you are looking at the A/C
products the tolerances are even better from +/- .002 to +/- .003 and in
weight from +/- .5 to +/-2.0 grains.
3) Getting a straightness tolerance in an all carbon shaft to be better
than +/- .004 is a little impossible. I know our competitors put that
they have +/-.001 in straightness, but you may only be getting one of
those if any at all. We don't play the game where we compete with posted
numbers. We just tell it like it is and that's what they usually are if
not better. The numbers we post are the worst case scenario, so we give
ourselves some cussion.
4) As of right now I don't know if they are going to be using a
uni-bushing for the ICS product. If there is one on the way, I haven't
heard anything about it.
I hope that has answered your questions.
Good shooting >>---------->
Marty Galvan
Account Services Representative/ Tech. Support
Obviously, #3 is a a little bit of truth stretching as well (I regularly test Goldtip Pros and CX 3DS that come in under their advertised spec..though to be fair to Marty, that hasn't always been the case. Current PRO series offering from GoldTip make the Easton /Beman shafts look laughable in the straightness department.
As tight as Beman/Easton spine and weight is, they still have a ways to go..IME, the competition has caught up and surpassed them in the realm of all-carbon and carbon-composite fiber technology.
They do shoot extremely well if you get a straight dozen..at least for awhile.
EDIT: I should also note that in my FAX I made it quite clear that I have tested a pile of arrows in my life, and I wasn't looking for typical markting BS numbers, and that I was interested to see what Beman says the specs are, and compare them to what they
actually are.