Gold Tip 55/75 Spine?

[HeyMikey]

So here's another arrow spine question: What is the spine of a Goldtip 55/75?

My draw weight is 62# at 29" draw length and my arrows are approx 28" long.
I'd think that I'm not underspined because I'm closer to the 55, than the 75, but how would I know? Or could I possibly be overspined? I don't seem to have bad arrow flight. Just wondering........

Also, would shooting the same arrow, but cut to 27 1/2" long, make any noticeable difference in the spine?

[Outback]

I'm no expert but Salt Grass Archery set me up with the 5575 and my draw is 65# and 28.75". They fly well and are a durable and accurate arrow for the money. I know there are spine charts on the web. Try google.

[Ryno]

It is a .400 spine. You are on the edge of a 400 and 340. If you are shooting a higher speed bow with and IBO over 320 you may be under spined and may need to go to a 340 which is the 75/95. Weight of broadhead would affect it as well.

http://www.goldtip.com/arrowcontent.aspx?page=chart

[critter69]

I shoot 72lb/ arrows are cut to 29 1/2". 100gr broad head. And I shoot the gold tip 75/95.

[12RingKing]

Mikey....I have some 7595 gt pro hunters with wraps and 3 " fusion vanes if you want to try it out of your setup. They're cut carbon to nock throat at 28"

[12RingKing]

Do you use wraps now? I know you use fobs....so if you added a wrap to the end of the arrow you could stiffen the spine a smidgen, or cutndown the arrow a tad or decrease your point weight.

[HeyMikey]

Mikey....I have some 7595 gt pro hunters with wraps and 3 " fusion vanes if you want to try it out of your setup. They're cut carbon to nock throat at 28"

Do you use wraps now? I know you use fobs....so if you added a wrap to the end of the arrow you could stiffen the spine a smidgen, or cutndown the arrow a tad or decrease your point weight.

Yes, I use FOBs, but my arrows aren't wrapped. I think my present arrows are okay; I just got to thinking about them, and wondered what the actual spine is. I could probably cut them down 1/2", and still have the (100 grain) broadhead comfortably in front of the rest. Thanks for the offer. If I feel like I'm having any issues, I might try your 75-95's out sometime.

[12RingKing]

Cool. You just have to remember that there's a difference in static and dynamic arrow spine. Play with your tip weight and it will change flight characteristics (dynamic spine).

Like you said...you're probably okay.....but from what I know...you probably are on the edge. When you shoot up your arrows I would consider a spine change or cutting them down a touch as you've mentioned.

Your static spine of the 5575 gts are .400. That a shaft cut to 28". Anything shorter stiffens spine of course. But to answer your question...I'm really not sure what the static spine number would be. I'm not sure if there's a formula you could use to figure it out.

[Adam G.]

I shoot 55/75 and have exact same specs as you including my arrow length of 28". They fly great for me.

[HeyMikey]

I shoot 55/75 and have exact same specs as you including my arrow length of 28". They fly great for me.

Thanks for your input!
Mine seem to fly pretty good too, although 3 WT bucks, an Axis buck, and a hog might not agree I think what it all comes down to, is I just started over-thinking it, and can't seem to leave well enough alone

[JW]

Ur fine Mikey. I shoot .400's at 62 pounds with a 125 at 27 inch arrow length and they are plenty stiff. When you start shortening those arrows the get stiff in a hurry. You could go to a .340 Spine but that would just be ur call. The 400's will work perfect on ur set up with 100 grain tips. And will be nowhere near being underspined.

[JW]

Cool. You just have to remember that there's a difference in static and dynamic arrow spine. Play with your tip weight and it will change flight characteristics (dynamic spine).

Like you said...you're probably okay.....but from what I know...you probably are on the edge. When you shoot up your arrows I would consider a spine change or cutting them down a touch as you've mentioned.

Your static spine of the 5575 gts are .400. That a shaft cut to 28". Anything shorter stiffens spine of course. But to answer your question...I'm really not sure what the static spine number would be. I'm not sure if there's a formula you could use to figure it out.

Quit over thinkin. Ur meltin brain cells.

[HeyMikey]

Ur fine Mikey. I shoot .400's at 62 pounds with a 125 at 27 inch arrow length and they are plenty stiff. When you start shortening those arrows the get stiff in a hurry. You could go to a .340 Spine but that would just be ur call. The 400's will work perfect on ur set up with 100 grain tips. And will be nowhere near being underspined.

Thanks for your input, bro :thumbup:

[JW]

Thanks for your input, bro :thumbup:

It wont shoot an aluminum Rage tho.

[HeyMikey]

LOL... You're consistent, if nothing else, my brother from another mother.