Primitive Archer
Main Discussion Area => Arrows => Topic started by: Blaflair2 on August 16, 2015, 10:35:21 am
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I have some Easton blemishes that I'm not 100% on spine. They're too heavy for the bow I need arrows for. Great groups about a foot left. Once I get home I can see what the gpi is and post. Was wondering if someone could tell me what spine they are and then I could maybe get some broad head adapters to adjust to desired spine?
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what model eastons? they should have a spine number on them such as "400" or ".400"
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I have to check when I get home.
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Do they already have inserts glued in? If so, increasing point weight may be easiest.
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Yeah they have inserts. Point weight is the only way to take the spine down is t it?
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They are 32", 500 grains with 150 feild points. It's not even on the chart :o what are my options. And how far off is it lol?
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What Spine rating? My spine tester cost me about $14 to build.
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we still need to know the spine- when you say "500 grains", is that a measured weight, i.e. did you weigh them on a scale? Or does it say "500" on the shaft? tell us everything it says on the shaft.
shafts are usually marked with two numbers:
GPI tells you how much the shaft weighs per inch, this is the shaft alone. it has nothing to do with stiffness.
The other number is stiffness- usually says "500" or .500 or something like that
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All it says is gold tip blemishes 3555, I looked them up and it said they're 500 grains. They are 32" long. It's not even on the arrow chart on the box. Lol
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So I found they are 8.6 grains per inch. Does that help? So the arrow should weigh 275.2 grains? What spine is that?
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the spine is .500
https://www.goldtip.com/productdetail.aspx?ptid=21 (https://www.goldtip.com/productdetail.aspx?ptid=21)
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So in weight what is that?
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about 52#
https://www.google.com/search?q=amo+spine+chart&espv=2&biw=1680&bih=949&tbm=isch&imgil=amhLVV0olmHrdM%253A%253B2dtYkdfXHp9JAM%253Bhttp%25253A%25252F%25252Fpiratesofarchery.net%25252Fbb%25252Fviewtopic.php%25253Fp%2525253D73493&source=iu&pf=m&fir=amhLVV0olmHrdM%253A%252C2dtYkdfXHp9JAM%252C_&usg=__MIniY9xDYtPzPbGAojuM91P44hA%3D&ved=0CCsQyjdqFQoTCPW1qerjsMcCFQQqiAodi5wAwQ&ei=WizSVfWgKITUoASLuYKIDA#imgrc=36X8Caf7bTPoZM%3A&usg=__MIniY9xDYtPzPbGAojuM91P44hA%3D (https://www.google.com/search?q=amo+spine+chart&espv=2&biw=1680&bih=949&tbm=isch&imgil=amhLVV0olmHrdM%253A%253B2dtYkdfXHp9JAM%253Bhttp%25253A%25252F%25252Fpiratesofarchery.net%25252Fbb%25252Fviewtopic.php%25253Fp%2525253D73493&source=iu&pf=m&fir=amhLVV0olmHrdM%253A%252C2dtYkdfXHp9JAM%252C_&usg=__MIniY9xDYtPzPbGAojuM91P44hA%3D&ved=0CCsQyjdqFQoTCPW1qerjsMcCFQQqiAodi5wAwQ&ei=WizSVfWgKITUoASLuYKIDA#imgrc=36X8Caf7bTPoZM%3A&usg=__MIniY9xDYtPzPbGAojuM91P44hA%3D)
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Why do they go to the left then? Shouldn't they go right?
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From a center shot bow? Good question. Do they shoot well from anything else?
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Yes, those are .500 spine arrows. If they are shooting left, you need a heavier point. Like a 200-250 grain point, instead of a 150. It all comes down to an interaction between several factors:arrow stiffness, point weight, width of the handle of the bow, pow poundage and drawlength. So, just because your arrow is a 50 pound spine and you have a 50 pound bow, doesn't necessarily mean it will fly well. Traditional bows tend to have a wide handle, requiring a weaker spine. When I shoot these type of arrows, I use the "GT trad 1535", which is just like your arrow, but weaker- it's a .600 spine arrow.
So, if you want to make those shafts work, do not cut them shorter and use heavier heads. Or trade them for some weaker shafts.
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http://www.huntersfriend.com/carbon_arrows/hunting_arrows_selection_guide_chapter_3.htm
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The bow is 60lbs. I cut an inch off one arrow and it seems to fly a lot better
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Blaflair, Are you left handed?
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Right handed
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cutting will stiffen them fast
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I don't know why they wanted to go to the right if they're light. But I cut the one and it shoots better. Gonna experiment and shoot it a bit more but I think cutting them a bit is the key. Glad I used super glue for the inserts. Heat em up a little and they come right out
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in your first post, you say they group a foot left, but in your last post, you say they go right. if you cut them, just experiment with one until you are sure. Cut off small increments, less than 1/2 inch. you can cut the nock end to avoid removing inserts every time.
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I meant left. Sorry. They went left