Can you have too much spine?
#1
Can you have too much spine?
Do you think you can have to much arrow spine? I'm shooting 27 inch Carbon Express CX350's with 100 grain tips out of a Bowtech Patriot set on 65 lbs. with a draw length of 29 inches.
#2
Giant Nontypical
Join Date: Dec 2004
Location: Ohio
Posts: 7,876
RE: Can you have too much spine?
Yea, you can have too much. What's the difference between the arrow your shooting now and an iron rod? Answer that and you can see some of the reason's too much is not good unless your going for results like that.
You don't have to have the arrow bend around the shelf do you, course not, unless your shooting an older or trad bow stiff is fine, prefered I'd say,but heavier the stiffer they get.
You don't have to have the arrow bend around the shelf do you, course not, unless your shooting an older or trad bow stiff is fine, prefered I'd say,but heavier the stiffer they get.
#3
RE: Can you have too much spine?
but heavier the stiffer they get.
Really, check out a 2613 and 2219 easton and get back to me.
Do you think you can have to much arrow spine?
#4
Giant Nontypical
Join Date: Feb 2003
Posts: 9,175
RE: Can you have too much spine?
Fingers shooters can have nearly as tough a time with overspine arrows as they do with underspine. Neither will shoot down the middle. They will both fly crazy.
For a release shooter, overspine arrows aren't as bad as underspined, but they're not good either. Underspined arrows will never hit the same place twice, groups look likea 50 yard pattern with buckshot from an open bore shotgun,and the bow will never tune up with them. With overspine arrows, the bow will tune and arrows will group fairly well, butgroup sizes will bea good bitworse thanthey'd be with properly spined arrows.
For a release shooter, overspined arrows won't go completely nuts in flight and they'll shoot pretty close to point of aim. That's what makes it so hard to figure out if you're overspined or not. It takes some experimenting with different spines, arrow lengthsand point weights to get it squared away.
There's no way to make your arrows longer so, if you suspect your arrows are overspined, just put heavier points on 'em and see if they group better. Try to borrow the same arrows in the next size down and see if they group better. If they do, you know what you need to to.
You can also replace the aluminum inserts with stainless steel or brass inserts in overspined arrowsto help add weight up front and soften spine. They'll add considerably to FOC %, but high FOC is MUCH better than shooting overspine arrows. You'll have to go on-line trad stores like Kustom King, 3Rivers or Alaska Bowhunter Supply to find them. Techie stores don't get much call for such things, so they don't stock them.
Frankly, the difference in arrow weight - especially with carbon arrows - is negligible, for all practical purposes. There isn't any huge difference in arrow speed or trajectory. If you never shoot through a chronograph, you'd never be able to tell the difference.
For a release shooter, overspine arrows aren't as bad as underspined, but they're not good either. Underspined arrows will never hit the same place twice, groups look likea 50 yard pattern with buckshot from an open bore shotgun,and the bow will never tune up with them. With overspine arrows, the bow will tune and arrows will group fairly well, butgroup sizes will bea good bitworse thanthey'd be with properly spined arrows.
For a release shooter, overspined arrows won't go completely nuts in flight and they'll shoot pretty close to point of aim. That's what makes it so hard to figure out if you're overspined or not. It takes some experimenting with different spines, arrow lengthsand point weights to get it squared away.
There's no way to make your arrows longer so, if you suspect your arrows are overspined, just put heavier points on 'em and see if they group better. Try to borrow the same arrows in the next size down and see if they group better. If they do, you know what you need to to.
You can also replace the aluminum inserts with stainless steel or brass inserts in overspined arrowsto help add weight up front and soften spine. They'll add considerably to FOC %, but high FOC is MUCH better than shooting overspine arrows. You'll have to go on-line trad stores like Kustom King, 3Rivers or Alaska Bowhunter Supply to find them. Techie stores don't get much call for such things, so they don't stock them.
Frankly, the difference in arrow weight - especially with carbon arrows - is negligible, for all practical purposes. There isn't any huge difference in arrow speed or trajectory. If you never shoot through a chronograph, you'd never be able to tell the difference.
#5
Giant Nontypical
Join Date: Dec 2004
Location: Ohio
Posts: 7,876
RE: Can you have too much spine?
Those would be al. shafts, wouldn't they?Well Idon't them all, or rather many of them butthe ones I'm familiar with, the stiffer the heavier.
Glad you old guys chimed in.
Like Art said, the cabons don't add up to much on some ofthe arrows. There are some (I've bought them in the past) that are heavy. Shot one the other day that was lost for a long time and recently found. Said to my daughter "I think this bow can shoot anything well". At 25 yrds it was 1/2 foot off. It did go deep into the target though.
Glad you old guys chimed in.
Like Art said, the cabons don't add up to much on some ofthe arrows. There are some (I've bought them in the past) that are heavy. Shot one the other day that was lost for a long time and recently found. Said to my daughter "I think this bow can shoot anything well". At 25 yrds it was 1/2 foot off. It did go deep into the target though.
#6
Giant Nontypical
Join Date: Feb 2003
Posts: 9,175
RE: Can you have too much spine?
For an arrow to hit that much lower than your others, nodog, it'd have to be a lot heavier. To be that heavy, that'carbon' arrow ofyours has to be fiberglass/carbon composite.Carbon Express Terminators are like that, for instance.
And yeah, they are a LOT heavier than all-carbon arrows are. My 6075 Terminators weigh out the same as XX75 2315's. But they'reso muchbetter... more consistent and more accurate... than plain carbons in the same price range. They'renot as fast or flat shooting, but I can judge yardage. I want arrows that hit where I aim them instead of just close to where I aim them.
And yeah, they are a LOT heavier than all-carbon arrows are. My 6075 Terminators weigh out the same as XX75 2315's. But they'reso muchbetter... more consistent and more accurate... than plain carbons in the same price range. They'renot as fast or flat shooting, but I can judge yardage. I want arrows that hit where I aim them instead of just close to where I aim them.
#7
Giant Nontypical
Join Date: Dec 2004
Location: Ohio
Posts: 7,876
RE: Can you have too much spine?
[8D]On the money Art. Carbon composite from Easton with a rusted on 125 fp. Has a great finish on it. Pulls quite and smooth over the rest.
Wouldn't mind shooting a heavier terminator but I have a bunch of gt's to go through and I'm not that good of a shot. They will hit whattheir aimed at. Getting me to put them there is the problem.
Wouldn't mind shooting a heavier terminator but I have a bunch of gt's to go through and I'm not that good of a shot. They will hit whattheir aimed at. Getting me to put them there is the problem.
#8
RE: Can you have too much spine?
Those would be al. shafts, wouldn't they?Well Idon't them all, or rather many of them butthe ones I'm familiar with, the stiffer the heavier.
Glad you old guys chimed in.
Glad you old guys chimed in.
Old Huh, let's just say wiser.
#9
Giant Nontypical
Join Date: Dec 2004
Location: Ohio
Posts: 7,876
RE: Can you have too much spine?
"Old Huh, let's just say wiser. "
Wise was part of the word I was really thinking ofJust kidding.
I saw some of those small shafts the other day and the guy making them up said they were very hefty. Didn't talk spin. He used them to shoot 90m. They were something. First time I'd seen them.
Wise was part of the word I was really thinking ofJust kidding.
I saw some of those small shafts the other day and the guy making them up said they were very hefty. Didn't talk spin. He used them to shoot 90m. They were something. First time I'd seen them.