Carbon arrow spine concern..

[Bowmancam]

A friend of mine has just given me some carbon arrows to try this weekend. They are 'golden tip hunter terminator 7595'. I shoot a 65# bow, so does he and we have the same draw length.
Are these arrows 'over spined' for my bow, and what damage could they do to my bow or are they unsafe to shoot at all?

Cheers, Cam

[Warlocke]

Cam,

I think anything over #65 needs a stiff shaft of at least 9-10 GPI.

After using the GT 5575 at 8 GPI, I found them underspined for my Hoyt at #70 so I have ordered a dozen at 7595.

The extra weight, 9 GPI, would suit hunting anyway.

My previous arrows were 10 GPI and they were more accurate than the 5575.

[Bowmancam]

Thanx for the tips lads,
Living in a townhouse with a 4square foot backyard prohibits me from testing them til the w/end ..

Again thanks for putting my concerns to rest!

Cheers, Cam

[Warlocke]

Coach,

All up weight doesn't have anything to do with spine, but GPI of a shaft has everything to do with spine.

Grain weight per inch tells the stiffness of a shaft and the amount of deviation of the nodes, or shaft distortion, at release depending on the poundage of the bow.

[HOOD]

Oh goody goody goody yet another debate, who will win this one. :roll: :lol: :lol:

Hood 8)

[takleberry]

Cam

If you find that they are over spined or tend to shoot left of the mark add a bit more point weight to them

had to do that to the wifes arrows though 100gr piont should do the trick at 45# 25" on35/55 GT's shot left went up to 125gr points and dead on the money just had to give the arrow more dynamic spine

Tac

[Warlocke]

Are these shaft weights different because of the finishes or the construction of the shaft?

If a shaft is black then it is all carbon therefore the weight is only in its structural integrity.

If the same shaft has a camo finish then its weight goes up but not the integral stiffness so the spine stays the same or slightly higher depending on the finish.

[Bowmancam]

Well after giving the new shafts a hammering on the weekend i'm a carbon convert. They seem to travel a lot faster and flatter .. unfortunately not flat enough as i shaved a goats armpits at 35 yards ( i thought it was 25 yards :cry: ) ...
I can get as many arrows as i like made up with field points for $10 each. Is this a good price?

Cheers, Cam

[Bowmancam]

Yeah mate they were great. Seemed to group well and seemed to be pretty tough. Had a shot that would have bent an alloy and after doing the bend test i could hear no crackling.
I think i'll be sticking with them. I was using 125 grn tusker javlins but am gonna try woody's hunters when i can get my hands on some.
Is then next shaft down the 55/75 or is there something in between?

Cheers , Cam

[Bowmancam]

So what combination do think would be best? Im not overly keen on the use of inserts in b/heads as they seem to lack uniformity and want to shift to woody's hunters as i've heard they spin true straight from the pack.

Kimall mentioned 'whitetails' but i think they might lack the quality of the gt's.

Cheers, Cam

[Bowmancam]

Geez , you cop a fair bit of flack here coach, but ive found you to be the most helpful in here .. a good no b.s. approach that i admire, thanx mate! 8)

I'm just waiting for Kimall to get his shipment in then i'll be taking some whitetails off his hands and fletching my own shafts. Im realy looking forward to it! :D

Thanx again coach

Cheers, Cam

[Sparra]

And Coachy boy thrives on the flack he gets Bowman...he loves it...but your right,pretty helpful most of the time :wink: :wink:

[Bowmancam]

Sh#t yeah .. he gives as good, if not better than he gets!

You dont do too bad either sparra :wink:

Cheers, Cam

[ricochet]

Geez , you cop a fair bit of flack here coach, but ive found you to be the most helpful in here .. a good no b.s. approach that i admire, thanx mate!


Another convert to the COACH's school of charm :lol: :lol:

Rick

[pete w]

The GPI is just that Grains per inch .It is weight only.Heavy spine arrows in carbon typicaly weigh more than a lighter sipne arrow in the same brand/model.
The weight does not reflect the spine though.Spine is dictated by the other numbers...55/75 ... 400, 500, 340.

gold tips are expensive over here.The easton Epic or excell is a cheaper shaft here and every bit as good or better.
We pat $70.00 Can. for completed easton Excells or Epics.Gold tips are a lot more.
Ask your dealers/shops about the easton Carbonaeroes.{Epic/Excell.}