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Tag Archive | "spine"

Spine variance- Same spine but different arrow models. #archery

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So this is probably just a rookie mistake but I need someone to confirm this… was shooting gamegetters by Easton (2217) and got them tuned nicely at 28” length. Broke a few and went to my local shop to replace them and could only find Easton fall stalkers but same spine (2217) .bring them home and cut them to length and they are acting way too stiff. Is it normal for a different arrow model to act differently if they have the same shaft size?


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Spine Question #archery

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I’ve been thinking about this a lot lately and I’d appreciate any input.

I’ve been shooting an arrow really well.

27.5” ctc RIP TKO 300 spine 8.8gpi
125g tip
75g insert
A wrap
4 fletch Heat vanes
Lighted nock

Comes out to 500ish grains just under 15% FOC

Higher FOC arrow, but there’s a lot of added weight to the back.

Similar arrow is like to build (ran similar setup last year) –

28” ctc Easton Axis 300 spine 10.7gpi
100g tip
75g insert
A wrap
4 fletch Heat vanes
Regular nock

Comes out to 515ish grains 13.5% FOC

These are very similar arrows – 25g less in the front of the Axis, no lighted nock on the rear (15g difference between lighted nock and regular nock).

So would one be a ‘better’ arrow because of mechanics? What I mean is I’m adding weight to the back so stiffen the shaft of the TKO, but not the Axis. I’ve read before that the arrow acts a lot differently by doing this (adding rear weight) versus shooting an arrow like the axis with a little less weight in front.

Yes, I know if one shoots better go with it. I’m asking if there’s a mechanical advantage between the two.

Thanks!

Sent from my iPhone using Tapatalk


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Arrow Spine Help #archery

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I was thinking about using some brass inserts in my arrows but I wanted to get some input from you guys.

Specs:

Elite Ritual 30 at 70lbs, 27.5” draw
Easton Axis 5mm 340s that will be cut 27” carbon to carbon.

Spine selection charts don’t seem to account for different insert weights. My question is: how would my arrow spine be looking with the following configurations of inserts and points?

50 grain insert, 125 grain point
50 grain insert, 100 grain point
75 grain insert, 125 grain point

Thanks!


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Easton Axis Spine 400 or 340 #archery

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Hey all, wanted some insight before I made the purchase on a dozen Axis arrows. I have a 27.5" draw with 60lbs of DW. Running 26" arrows with a lighted nock (20 gr) in the rear. What spine would I need with a standard insert at 16 grains and which would I need with 50 gr of brass up front? Thanks everyone!


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ISO Easton X10 830 spine #archery

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In search of 830 spine Easton X10s. I have a 25.5" draw. I tubed one at 18m tonight and am now down to 10 of the 12. The pin nock completely failed and pushed into the carbon and aluminum core. If anyone has some for sale, I would appreciate not having to buy new.
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help with tuning / spine for Hoyt CST? #archery

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Hi all,

Longtime lurker, first time poster, thank you in advance for any help or advice you might have.

I don’t have a lot of tuning knowledge, especially when it comes to arrows, and I’m having a problem that just seems weird to me.
Either that, or I completely misunderstood Easton’s charts. Which, hey, sadly wouldn’t be all that strange for me 😉

Bow: Hoyt carbon spyder turbo, Z5 cams (number 3 I believe), 28 inch draw, 60 pounds give or take a few, Qad hdx rest (my first dropaway, I’m used to blades, but setup looks ok – it’s dropping, no vane contact that I can tell from smearing goop on em), centershot at around 6/8

Arrows, I’ve tried the following:

Easton 2317 XX75 Camo Hunter shaft cut to 29 inches 125 grain head
Easton Bloodline 330 spine, shaft cut to 29 inches 125 grain head
Easton FMJ 5mm 400 spine, cut to 28 inches 125 grain head

The strange thing (to me at least) is, paper tuning shows that it likes the FMJ but the Bloodline and 2317 are showing left tears – weak it seems. I’d actually have expected them to be stiffer, or at least fine for a 60 lbs bow? Am I wrong?
What could be causing this please? Just them being the 1 inch longer makes that much of a difference? I shot weaker spines than these 3 out of my previous 60 pounders with no real issues…

(Also, I’ve no internet at home right now so I’ll be checking in on this on my ancient flip phone thing but will not be able to respond til tomorrow – please take no offense if I respond slowly)


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Arrow spine question #archery

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Does increasing tip weight weaken or stiffen arrow spine?
My thought is adding weight weakens the spine?


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Bow and spine according chart, bare flyes 30 inches left #archery

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Hello dear community, try to tune my recurve measured on clicker 40lbs and arrows Easton x10 /500 spine, length 30,5 inches, bare shaft flyes on 30m about 30 inches left from fletched group. According Easton shaft selector this arrows cannot be too stiff. Where can be a problem?


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