Do arrow wraps change dynamic spine?

[Briar Friar]

Me thinking out loud and/or quietly in interweb script:

On one hand the added rear weight will weaken the dynamic spine.

On the other hand the wrap will act as a brace stiffening the spine. (Similar to an arm cast or back brace or corset or whatever)

Is it a toss up and/or counteracting effect?

Anybody experimented or static spine tested with wrapped shafts versus unwrapped shafts...same make and model and deflection shafts?

[antiparadigm]

I measured my CEZ wraps once and noted that it weighed in at about 10 grains.

Depending on what type of wrap you use seems like it makes all the difference on spine effect. Purely the way it makes sense to me, (no science) if you use something like a quick Fletch where there is an inward force exerted on to the arrow by the more rigid plastic's shrink action, it would increase the spine by the most miniscule bit; but if you are just wrapping a vinyl sticker type wrap around the shaft, it is just adhering to the outside, or at best putting a circumferential force (if wrapped in a circular fashion) around the arrow shaft. Also being that the sticker is not a solid circle (or tube rather) the force seems like it wouldn't be consistent, and therefore negligible.

Just the way I see it. [emoji108]

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[Stoof]

When I plug numbers into the software I have, speed goes down, FOC goes down, weak works toward stiff. 10 grains of wrap takes off one about 1% FOC and about 2 FPS on the speed.

[TheHammer]

Your FOC % as well as speed will go down. It won’t be much, but you can see it if you plug in the numbers.

[antiparadigm]

1 or 2% is definitely nothing to really write home about. Pretty easy to compensate for too. if one or 2% makes a huge difference to anyone then you better watch how much glue you're putting on your fletchings as well because that will carry more weight too. Lol

But, science is science!

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[antiparadigm]

What arrows and equipment are you using?

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[Stoof]

Hell, most of my matching arrows still have a 1-2% difference.
I tend to stay away from wraps simply because I end up re fletching arrows to often from shooting allot.

[muddyfuzzy]

OP, let’s speak in real terms here. Does adding a wrap; or any tail weight for that matter change the dynamic spine, yes it does and will stiffen it up based on said weight. However, what does that cost you? In a real world setting absolutely nothing. As a general rule of thumb on a normal arrow setup an increase or decrease of 20-25 grains will shift measured FOC about 1% and subsequently has little effect on an arrows ability to tune, terminal performance or penetration characteristics. So basically if you want to shoot them, shoot them. If it was a good setup with wraps it will be a good setup without them. Likewise applied to the inverse.


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[tradtiger]

Briar:
Don't do it! Only adding weight in the wrong place for pure decoration! Why? Slowing the arrow at the very least. Now if you want to paint for decoration, then sand down to almost nothing, prolly okay, with some efficacious decoration!

[antiparadigm]

Briar:

Don't do it! Only adding weight in the wrong place for pure decoration! Why? Slowing the arrow at the very least. Now if you want to paint for decoration, then sand down to almost nothing, prolly okay, with some efficacious decoration!

Can't tell if troll or not lol.

I use them so when I do refletch my arrows I am not deforming the shaft by resanding and scraping glue off. I found the NAP hellfire quickFletch on Amazon for 7.99 a pack. That's my preference to date. Minimally invasive, and the wraps get super tight. And last pretty long imo

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[tradtiger]

Can't tell if troll or not lol.

I use them so when I do refletch my arrows I am not deforming the shaft by resanding and scraping glue off. I found the NAP hellfire quickFletch on Amazon for 7.99 a pack. That's my preference to date. Minimally invasive, and the wraps get super tight. And last pretty long imo

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Obvious troll. Might as well shoot from left and right side.

[antiparadigm]

Obvious troll. Might as well shoot from left and right side.

[emoji23]

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[Briar Friar]

Thank all Yall for your input.

I have some inherited Carbon Express Heritage 150 (.495 deflection) wrapped shafts that “seem” terribly variable in bareshafting...some bad form accounted. I couldnt help but wonder if I should spine test and subsequently index the spines deflection with nock orientation. That led me to wondering how evenly wraps exerted forces on the shafts... and is there a way to index wraps if uneven. Too much for time investment me. I think Im gonna shuck the wraps off the shafts.

...Then shoot left and right. I shoot a Sarrels Lynx Dual-shelved Recurve daily...AntiP. TT was lightly jesting.

God bless Yall.
Byron

[Briar Friar]

Can't tell if troll or not lol.

I use them so when I do refletch my arrows I am not deforming the shaft by resanding and scraping glue off. I found the NAP hellfire quickFletch on Amazon for 7.99 a pack. That's my preference to date. Minimally invasive, and the wraps get super tight. And last pretty long imo

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The potential shaft deformation during refletching is about the only logical utilitarian reason I can fathom for utilizing wraps.

[antiparadigm]

Yeah, that's the main reason I would use. Personally I wouldn't use on a trad bow, only a compound imo.

I figured he was being funny.

I use wraps for my compound bow's arrows, and I can't tell any difference in grouping or penetration out to sixty yards. So I'd say it's safe.

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