| From: Jamie
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| Date: 04-Dec-17 |
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I'm hoping for some advice before I purchase hemlock arrows from a company in British Columbia.
I have a Predator recurve 51# at 28.... I draw to 30... will be shooting 125 gr points and am hoping for a 31 inch finished arrow. Predator has a center cut shelf from what I've heard.
I'm thinking I need a 70 75 spine shaft. Not going to get bent out of shape if I have to leave arrow longer than 31"
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| From: Jim
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| Date: 04-Dec-17 |
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I'm thinking 11/32" 75/80 or 80/85 using a fast flight string? finished arrow BOP 31" using 3x5" feathers? and as you stated 125 grain point. JMHO
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| From: aromakr
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| Date: 04-Dec-17 |
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With ff string 85/89 AMO cut 31" BOP spine, shaft dia. is up to you 11/32 or 23/64"
Bob
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| From: Orion
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| Date: 04-Dec-17 |
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How long are your shafts to start with? Most are cut to 32 inches. A one-plus inch point taper leaves you with l little less than 31 inches, which gives you about an inch of arrow overhang, plus point with a 30-inch draw. In short, I don't think you'll be able to leave them longer than 31 inches, unless they're longer than 32 inches to start. Regardless, leaving them longer softens the dynamic spine, and you don't want that in this case.
Hemlock is physically heavier than POC or spruce so you'll need a little extra spine to accommodate the increased weight. Even so, given that the bow is cut to center, not past center (which would be center shot) and given that you want to shoot a relatively light point, 125 grains, I'm thinking 75-80 will do it. Might ask the supplier to supply a few test arrows with higher and lower spines. Good luck.
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| From: Jamie
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| Date: 04-Dec-17 |
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All the shafts from this supplier are 34 inches long. I do shoot fast flight
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| From: George D. Stout
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| Date: 04-Dec-17 |
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Aromakr has been doing it for umpteen dozen years. I would listen to hime.
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| From: Orion
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| Date: 04-Dec-17 |
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Jamie: Given that we don't have total agreement on this one, please let us know what ultimately works for you. I respect Bob's opinion, but there is room for disagreement on this one, and he isn't the only one on this site who's been building arrows for 50 years.
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| From: hookman
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| Date: 04-Dec-17 |
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X2 for Aromaker.
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| From: SB
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| Date: 04-Dec-17 |
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I can't imagine needing anything over 70-75 for a 51# bow drawn to 30". I too have been building wood arrows for over 50 yrs. !
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| From: Bud B.
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| Date: 04-Dec-17 |
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Spine test kit.
I too am in the 70-74 group. If weak, build out the strikepkate.
Please report back on what works.
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| From: Mpdh
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| Date: 04-Dec-17 |
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Ok here’s a question. Does a heavier mass wt in an arrow require more spine or less? My thinking says less, because the string can’t push it as fast as a lighter wt arrow.
MP
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| From: GLF
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| Date: 04-Dec-17 |
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72 with b50, 77 with ff. The only factors are bow weight at 30 arrow spine at 31 and centershot. Bows cut to center, weight at 30 is about 57. Add 15 spine for 31 inch arrow (5 lb per in) with b50 or 20lb for ff. Added 5lb for ff.
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| From: Jamie
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| Date: 05-Dec-17 |
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I think I'm going to go for a happy medium of the responses I've gotten 75 80. I worry about less than perfect form during hunting situations. For example shooting from a sitting position may shorten my draw length some
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