what arrow spine to start with

[valleysniper]

I just ordered a Dryad Orion recurve with ACS RC limbs. I'm shooting 48#@ 28" drawing 29". Can anyone tell me what arrow spine and length would be a good starting point ?

[Bisch]

I would think an at near full length .400 spine shaft with about 200-250gr up front should be close.

You could also go .500 spine. With 175-225gr up front, you will have to play with the length to get it just right. Somewhere in the 29”-31” range should be close.

Bisch


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[Orion]

Depends on how heavy a point you want to shoot.  At your draw length, you're pulling a tad more than 50# with a high performance bow.  With something like 150 grains up front, a .400 shaft cut to 30 inches will likely work.  If you want to go heavy in the front, say 300 grains or so, may need to move up to a .340, again cut to 30 inches. 

I cut my arrows to one inch longer than my draw length and tune with point weight and side plate thickness.  A lot of folks start with a full length shaft and bare shaft and shorten as needed. 

Good luck.   

[valleysniper]

Are you saying that you don't bareshaft ? Just tune with the head weight ?

[valleysniper]

I guess I misspoke, What I'm asking is if you just decide on arrow length then tune with head weight instead of going full length, then trimming?

[Orion]

Yes.  That's what I do.  Of course, I've been shooting all kinds of shaft materials long enough (about 60years) that I pretty much know what's going to work before I buy the shafts.  I basically decide the arrow weight and FOC I want.  Then I buy the spine shaft that, when I cut it to an inch longer than my draw length, will give me that.  Usually I'm good to go, but I may need to add or subtract 25 grains in point weight or add or subtract a little side plate material.  I don't adjust brace height to tune my arrows.  And, I don't bare shaft unless my fletched shafts don't fly perfectly or don't go where I want them to.

[Friend]

Am quite familiar with setting up Dryad Orion's with ACS RC limbs.

What point weight and total arrow weight range are you interested in?

[valleysniper]

I would really like to stay in the 150-175 gr point weight if possible. As far as overall weight of the arrow I'm also not sure, I don't want to be real light . Maybe something in the 10.5 to 11 gpi range ? Sounds like my overall arrow length will be around 30" I'm looking for suggestions. I bought a high performance bow to get as much performance as possible and have the option of changing arrow weight to match what I'm hunting .Any help would be great....Gary

[BigJim]

In order to get the total weight you are looking for, you will need a shaft with some sort of wrap... trad wrapped arrows are typically the heaviest... even still with 175g point or less, you will need weighted inserts to achieve the total arrow weight you mentioned.

I would think that at 30"s you would be looking at a 500 spine... The thing about this is that it will work or be slightly weak. If it is too weak, you can build out the sight window. If you choose the 400s and they are too stiff, the only thing that you can do is build up point weight... It can be done this way, but you may not like the total arrow weight you end up with.

When an arrow is close to correct, major changes in point weight don't have a lot of effect. However when they are considerably off, small weight changes make a big difference.

Imagine an arrow coming off the bow completely off line. The feathers have less difficulty stabilizing when the point is lighter.. and every bit counts. But when the arrow is for the most part on line twords the target, the feathers don't have to fight the point much.
Having said all that, it takes a pile of weight to brake down spine compared to leaving a shaft say an inch longer.
BigJim

[valleysniper]

If the arrow weight I was thinking seems too heavy, what should I be looking at ? I want something with enough weight for deer but still be able to take advantage of any performance gains...Gary

[BigJim]

I'm not saying it's too heavy. I personally like approximately 10g pp for a nice happy medium.

As long as the bow shoots well, I think performance gain is nothing more than a talking point. This statement means less though if you are a long distance target archer.

Gap shooting at long targets may see advantages with "increased performance" , but "instinctive" shooting is not affected by increased performance.

BigJim

[Friend]

Have set-up five Dryad ACS with RC limb bows...so I have a some familiarity...that was what I was shooting to harvest the animal in my avitar…

Would suspect that the following would be very close and an excellent arrow for your purposes.

Black Eagle Carnivore 350...30 1/2"...100 gn insert...175 gn point...4" 3-fletch...~10.2 gpp…~24.9% EFOC...~521 gn total

[valleysniper]

I think I have the arrow dilemma figured out. Seems like 400 @ 32 1/4" with 250 up front flies good. Can't get rid of the nock high for the life of me, as always. Thanks for everyones help !!