Winger

I have read many posts about arrow straightness, spine, etc. In one thread, in particular, JeffB talked alot about spine and weight being so important and straightness being somewhat secondary.

Being somewhat of a perfectionist, I continue to shoot aluminums. They seem to be more consistant in all these points, plus I like the extra weight. My hunting arrows, when turned on a straghtener or V block, have no movement whatsoever on either point or nock end. Shooting a 2413, durablility is a problem.

I am not an archery novice, but have never really delved too much into the arrow tech side, having shot alums for over 20 years. I have tried various carbons and was not impressed. I guess my questions are : At .003 straightness, should any movement be detectable with the eye when turned on a V block? How much movement, particularly of the nock end, would be acceptable(pertaining to fixed blade broadheads)? How is the straightness measured normally? Is it over the length of a full length shaft?

I don't know if I have asked the questions properly, but anything you can enlighten me on would be helpful. I am leaning toward ACC's for next year, as it seems they are probably best for consistency in spine, weight, straightness and appear to be fairly durable as well.

Thanks!

Winger

Rangeball

I am way under qualified to even begin to answer your questions, but it seems to me that 3 1,000ths of an inch would be awfully hard to detect by naked eye alone.

I can add that based on those past discussions, I am now the proud owner of 1/2 a dozen ACC 3-49s, and they shoot like a fricking dream... And hear all this time shooting those GT 5575 hunters I thought it was me...

Black Frog

Range- .003" is about the average thickness of a piece of paper in your printer.

I believe the straightness numbers are based on a 28" span, just like the spine numbers.

JeffB

Salutations!

I have never done any kind of measuring how much the nock or point should/would move. I suspect you could get some alums that are .003 and compare, but yes you are correct, straight alums don't have ANY wobble. the ACC's "roll" similar, as they are usually UNDER straghtness tolerance. Once in a while you will get one ACC right at the tolerance level and it has just a teeny tiny bit of wobble.

All EASTON arrows have per inch straightness (.003 for ACC's, .002 for XX75, .0015 for XX78, etc) and a Total Indicator Reading (TIR) which is over the entire shaft, and is your guarantee. Generally the TIR is twice the "per inch" rating (so the TIR for ACC's is .006, for XX75 is .004, etc.). Personally I find TIR of up to .010 (.005 per inch) acceptable AS LONG AS weight and spine are impeccable. Perfect example are the Beman ICS Hunters and the new Easton Epic/Excel shafts (all the same general construction). While the straightness is marginal, and can be a bit goofy, they shoot like a son of a gun due to spine and weight consistency. I've had other brand IC carbons that cost twice as much and were much more straight that would not group as well...cause the spine was not as consistent...

Ok..I'm getting off track...just call me Tangent Boy <img src=icon_smile_big.gif border=0 align=middle>

Most other carbon manufacturers do not give a TIR (hmmmm..) They rate their straightness over a 28&quot; span. That's great. But what if I shoot a 29&quot; arrow? or 30&quot;? or 32&quot;? . Also is that .003 rating over two points equidistant 28&quot; from the middle? or from one end to about 4 or 5&quot; from the other end? Ask ArthurP how good those arrows are at his gorilla length of 33&quot;..he went back to XX, alum. Some of the cheaper IC carbons are pretty good until right at the ends where all of a sudden they go haywire for straightness. Goldtip claims (or at least did at one time) straightness over the entire shaft length.

In fact I've found many arrow manufacturers claim alot, but most do not deliver on a consistent basis except for Easton/Beman.

JeffB <img src=icon_smile_big.gif border=0 align=middle>



Edited by - JeffB on 11/14/2002 19:05:47

JeffB

<BLOCKQUOTE id=quote<font size=1 face='Verdana, Arial, Helvetica' id=quote>quote:<hr height=1 noshade id=quote>
I can add that based on those past discussions, I am now the proud owner of 1/2 a dozen ACC 3-49s, and they shoot like a fricking dream... And hear all this time shooting those GT 5575 hunters I thought it was me... <hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face='Verdana, Arial, Helvetica' size=2 id=quote>

RB,

MOST EXCELLENT! See! I hate to say I told ya so, but... <img src=icon_smile_tongue.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>

Seriously, I'm glad the 3-49's worked out for you. As I've said before I think most people would be really surprised how much improvement they would see with a set of high quality,consistent arrow shafts.

JeffB <img src=icon_smile_big.gif border=0 align=middle>

Winger

Thanks Jeff, I knew you would come through. Basically, you just confirmed my assumptions. I will definitely get some ACC's at some point after this season.

For what it's worth, I did try some ICS Hunters. They shot great with field points, but I never could get them dialed in with any of the fixed blade broadheads I tried on them. To be fair, it could have been the FPS they were shooting at, but I went back to my trusty alums and BINGO, no more problem. I had extra BT speed to burn anyway ... <img src=icon_smile_wink.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>

Funny you mentioned guarantee. I once bought some XX shafts, of which some (3 I think) had what I felt was way too much wobble. I sent Easton a letter, explaining that I was not pleased by this at all. They sent me 4 brand new shafts and a nice letter saying something like they hoped this would make up for it. I thought that was rather classy of them.

Winger