Spine of arrows

[enewman]

I see lots of post about spine. Is it to weak or to stiff. Or the programs says it needs to be 27 inches to be perfect but I can only cut to 28 Now what do I do.

First off. Underspine is the only time you will ever have problems. And it really only shows up when shooting fixed broadheads. But why spend the time to tune an underspined arrow so I will agree don't shot underspine.

Now let's look at overspined. There's really no such thing. People need to stop worrying about it so much. If you do then you need to get a ram spine tester.

Let's look at a spine program. If I put in my set up and it shows say I need 26 inches with my 300 spine arrow. That's all good. But when I check my arrows with a ram tester they come in at 290. Now what. Nothing. I cut them and tune. If it would have not been for the ram tester I would have never known. Same thing with my last set on velocity's. Did the same tuned and no problems. But when tested on the ram tester they came in weak, average was 310. Again looking at the program I would be off.

The programs are a great tool. But there not the gospel. Look at the program it shows that what ever spine you put in should all be the same. But take two different brands. If the program was perfect then you should be able to take any arrow with same spine and tune one and never have to tune again. But you can't. Arrows are not all built the same. So the dynamic reaction is different. So you have to retune.

So all of what I wrote was just to say. As long as the arrow is not underspined. It dosent matter tune it and go.

Now for the people that think there is an optimum spine. I will agree. But unless you learn to tune dynamically and most do not or even know how. The optimum spine means nothing.

[Rat]

I agree, except about optimum spine, it means everything.

This is what you do when you tune an arrow, by cutting, rotating nocks, adding/removing weight; we are tuning for optimum dynamic spine (of that shaft) right?

How you get there can be different, but eventually we all want to get to a perfectly tuned arrow; and to me that means one that is tuned for an optimum dynamic spine.

[enewman]

I agree, except about optimum spine, it means everything.

This is what you do when you tune an arrow, by cutting, rotating nocks, adding/removing weight; we are tuning for optimum dynamic spine (of that shaft) right?

How you get there can be different, but eventually we all want to get to a perfectly tuned arrow; and to me that means one that is tuned for an optimum dynamic spine.

I said I believe in optimum spine. But very few people no how to tune for optimum spine. At that point it no longer matters. It only matters to the people that tune dynamiclly.



I only know a had full of people that shoot a compound bow with a release aid that knows how to tune dynamically. But yet they all can shoot and hit the target. What people see is a program is what gets them there and it does not. It only gets close. And we all know we can tune no matter what it is

I can tune a 500 spine with a 300 gn tip at 28 inches and I can tune a 250 spine at 24.5 inches with a 100 gn tip. Both shoot good but neither are optimum but yet they group. The 500 not as good as the 250 spine.

[enewman]

The post was mainly to tell people stop worrying about what a program tells you. It's not as critical as people have come to believe. As long as you not to far underspind. It's all in tuning.

[Bisch]

I don't know squat about compounds, but you can easily and definitely be overspined with a trad bow! I have a RAM spine tester. And nearly every arrow shaft or brand I have ever spined are all stiffer than what is marked on the shaft.

I totally agree that every different arrow brand will spine differently, even if marked the same. Just because it says .400 on the shaft does not mean it is .400 spine (as a matter of fact, it more than likely is not whatever is marked on the shaft).

For me, I don't care what the actual number is, as long as I got the tune. What I do care about is that the number is consistent from shaft to shaft. Some arrow mfgrs fail miserably at that!

Bisch

[4dog]

Unless you shoot selfbows with a lot paradox then...it matters.

[enewman]

I don't know squat about compounds, but you can easily and definitely be overspined with a trad bow! I have a RAM spine tester. And nearly every arrow shaft or brand I have ever spined are all stiffer than what is marked on the shaft.

I totally agree that every different arrow brand will spine differently, even if marked the same. Just because it says .400 on the shaft does not mean it is .400 spine (as a matter of fact, it more than likely is not whatever is marked on the shaft).

For me, I don't care what the actual number is, as long as I got the tune. What I do care about is that the number is consistent from shaft to shaft. Some arrow mfgrs fail miserably at that!

Bisch

I almost wrote except for traditional shooters Spine is very important. I don't shoot traditional so I can't say. And I know I should have stated that this is a compound with release shot at the very beginning. Hahaha I new better. I'm sure swamprabbit will get me also.

[TEXAS 10PT]

Cutting and shooting then cutting and shooting is how I learned to get to that optimum spine

[enewman]

Cutting and shooting then cutting and shooting is how I learned to get to that optimum spine

Man it's great to see you post. I thought you had left the planet. Hope things are doing great.

And yes your tuning method is perfect. But no one teaches this any more.

[Chew]

I just want to think you for not using the word "spline". That is all.

[TEXAS 10PT]

Man it's great to see you post. I thought you had left the planet. Hope things are doing great.

And yes your tuning method is perfect. But no one teaches this any more.

I didn't know there was another way.....am I that old??? LMAO

[enewman]

I didn't know there was another way.....am I that old??? LMAO

Just to me there papa

[JW]

I don't know squat about compounds, but you can easily and definitely be overspined with a trad bow! I have a RAM spine tester. And nearly every arrow shaft or brand I have ever spined are all stiffer than what is marked on the shaft.

I totally agree that every different arrow brand will spine differently, even if marked the same. Just because it says .400 on the shaft does not mean it is .400 spine (as a matter of fact, it more than likely is not whatever is marked on the shaft).

For me, I don't care what the actual number is, as long as I got the tune. What I do care about is that the number is consistent from shaft to shaft. Some arrow mfgrs fail miserably at that!

Bisch

Critical with compound fingers shooters as well.


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[dustoffer]

"People need to stop worrying about it so much."

/\/\

I agree, but then there are a bunch of things folks need to quit being so **** about and just learn to shoot and get good/consistent enough to be able to evaluate when some esoteric adjustment they've made to their setup has made a difference in accuracy/grouping.