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Arrow Spine

sdorton

sdorton

Well-Known Member
SH Member
Joined
Sep 11, 2019
Messages
346
Location
Kentucky
Ok since this Toelke Whistler is totally different in specs I need some of your opinions. I'm also wanting to try out a new arrow. So here's what I ordered...
- Toelke Whistler 60"
- 44Ibs @ 30.5"

I'm wanting to try the Gold Tip Trad. Classic XT's. I'm also wanting to use a 190g Simmons Tree Shark. Since my arrows are normally cut to 311/4" I don't have much room to play with cutting arrows what is your thoughts on spine stiffness for my set up? 340? 400? I'm thinking 340 since these arrows are 12.1gpi and have a 80g outsert. Arrow weight would be pushing 650g total weight.

My total arrow weight with my Zipper Recurve is 660g but is 54-55Ibs @ 30.5" and I'm using Carbon Express Heritage 250.

Hope I'm making sense....I'm terrible at trying to type out what I'm trying to say.
 
I'm thinking 340 spine you have a long draw length and you're going down 10 - 11lbs in draw weight but you may draw a bit longer with that lower pull weight and you are putting a lot up front. I think overall you always want to work with stiffer spine if you need to tweak it. I'm no trad expert though but if you wanted to put 100gr. inserts in you could still do that if they were acting to stiff at your new draw weight.
 
lancasterarchery.com

Gold Tip Traditional XT Arrow Shafts

The look of traditional wood, with the performance and durability of today's carbon construction Straightness Tolerance: +/- .003" Weight Tolerance: +/- 2 grains GT Series nock and Accu-Lite insert included Available spines: 600 (7.8 gpi), 500 (8.6 gpi), 400 (9.3 gpi), 340 (10.5 gpi)
lancasterarchery.com lancasterarchery.com

I would get on Lancaster and order one of each, then you can know for sure before ordering more.
 
GCTerpfan said:
lancasterarchery.com

Gold Tip Traditional XT Arrow Shafts

The look of traditional wood, with the performance and durability of today's carbon construction Straightness Tolerance: +/- .003" Weight Tolerance: +/- 2 grains GT Series nock and Accu-Lite insert included Available spines: 600 (7.8 gpi), 500 (8.6 gpi), 400 (9.3 gpi), 340 (10.5 gpi)
lancasterarchery.com lancasterarchery.com

I would get on Lancaster and order one of each, then you can know for sure before ordering more.
Click to expand...

Yeah that’s my plan. I guess I should have mentioned that. Only reason I asked is bc I was reading a thread about others bow/arrow set ups. I was amazed at how bow setups were similar but their arrow setups so different. Just got me thinking a little.
 
sdorton said:
Yeah that’s my plan. I guess I should have mentioned that. Only reason I asked is bc I was reading a thread about others bow/arrow set ups. I was amazed at how bow setups were similar but their arrow setups so different. Just got me thinking a little.
Click to expand...

Yeah, I think people sometimes underestimate how much the center cut of the bow and the shooters draw length affect arrow spine. Those two factors can cause major differences in spine between bows of the same draw weight.
 
I think 400 spine and thats only because of your draw length.
I have found 500 spine works great for many.
 
I used to order bows cut past center but after all is said and done I prefer to, or find that bows shoot as good, (and to me) more forgiving with the shaft away from center. The old matchstick school of thought.
Plunger tuning is not the same because of the give in the plunger. Both styles work.
A good tune is a joy.
 
Get a test kit from 3Rivers. This is really the only way to know what that bow will like with you shooting it.
 
Draw length, center shot, brace height, string material, fixed crawl length add up to huge dynamic spine changes.
 
I shoot a very similar draw wt/draw length set up and I shoot 400s. I shoot 500 spined shafts from a bow that is 36lbs on the fingers with a boat anchor riser (Spig BB).

You have a long draw length which has a pretty big affect on the dynamic spine of your arrows because of the longer power stroke.
It is way easier to add point weight, adjust brace height, remove string silencers, etc to get a stiff shaft to fly well. I have fits getting weak(er) shafts to fly well. YMMV
 
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