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How to design an Extreme FOC hunting arrow

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How to design an Extreme FOC hunting arrow

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Old 04-20-2007, 08:30 AM
  #21  
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Default RE: How to design an Extreme FOC hunting arrow

Are those $26 a peice or is that a 3 pack , looks expensive
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Old 04-20-2007, 08:37 AM
  #22  
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Mine came in a three pack.
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Old 04-20-2007, 09:38 AM
  #23  
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Default RE: How to design an Extreme FOC hunting arrow

ORIGINAL: BobCo19-65

ijimmy, look here:

here




They look mean!
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Old 04-25-2007, 01:56 PM
  #24  
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Default RE: How to design an Extreme FOC hunting arrow

Matt, what arrow are you putting that bad-boy on, aluminum or carbon?
Carbon.

Ok........so it turns out it's not going to be 700grs. My 7595 Traditionals were bareshafting much to stiff no matter how many pounds of tip weight I added plus they started diving, so I tried my5575 Traditionals with 145gr heads and 20gr extra insert weight......with nock adapters and a Bohning nock they bareshaft tune perfectly. 513grs with 5" feathers.

So I'll change out the 145gr head and the extra 20 grs........throw on the 220gr Muzzy and add another 50grs to the tail to maintain spine and I should end up with roughly 615grs finished arrow weight. I haven't figured FOC but I'm guessing around 15%?
It'll either be the 220gr muzzys or 160gr Simmons Landsharks with additional weight in the insert to bring the front weight back up.

I think approx 615grs out of a62# @ 30.5"Black Widow SA V is gonna leave a serious mark.

Simmons 160gr Landshark:



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Old 04-25-2007, 07:11 PM
  #25  
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Default RE: How to design an Extreme FOC hunting arrow

Since all the arrow gurus are on this thread I've got a question. When measuring for FOC do you measure to the front edge of arrow or to the tip of the field point/broadhead? I've always measured to thelatter. Just wondering if I'm doing it right.
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Old 04-26-2007, 04:31 AM
  #26  
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Default RE: How to design an Extreme FOC hunting arrow

My 7595 Traditionals were bareshafting much to stiff no matter how many pounds of tip weight I added plus they started diving, so I tried my 5575 Traditionals with 145gr heads and 20gr extra insert weight......with nock adapters and a Bohning nock they bareshaft tune perfectly. 513grs with 5" feathers.
Yep, those Traditionals are heavy and stiff. On my 60 lb Horne recurve at 29" I ended up using the 7595 XT Hunters with 320 grains on the tip of a 30" arrow. These are spined at .340 vs the .300 of the traditionals. They ended up at around 610 grains. I'm considering cutting them a 1/4 to 1/2" shorter just so I can add 50 grains to the insert. The XT Hunters aren't as pretty as the Traditionals, but the spine is very good for bows in the 60 lb area, where you want a lot of tip weight.

I think approx 615grs out of a62# @ 30.5"Black Widow SA V is gonna leave a serious mark.
You got that right!
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Old 04-26-2007, 04:43 AM
  #27  
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Default RE: How to design an Extreme FOC hunting arrow

ORIGINAL: C-WOODS-SHOOT

Since all the arrow gurus are on this thread I've got a question. When measuring for FOC do you measure to the front edge of arrow or to the tip of the field point/broadhead? I've always measured to thelatter. Just wondering if I'm doing it right.
I measure from the nock's throat to the bottom edge taper on the broadhead I'm using. If you go to a few sources, you'll probably find a few different ways of measuring it. There's been plenty of debate as to which is best. I don't think it matters too much. If you're consistant, you'll have a basis for comparison. I choose my method because that is how Ashby does it. I highly respect his studies and since he has found 19% to be a critical figure in regards to penetration, I like to make sure I'm over that, according to his method of measuring it.


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Old 05-07-2007, 08:46 AM
  #28  
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Default RE: How to design an Extreme FOC hunting arrow

ORIGINAL: BobCo19-65

Bob, I'm curious about the tapered shafts. When you get them built, I'd appreaciate if you made a post on what the FOC turns out to be.
Sure will.
Straight Arrow, the FOC came out to be 21%.
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Old 05-08-2007, 04:19 AM
  #29  
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Default RE: How to design an Extreme FOC hunting arrow

Bob, so is that with about 300 gr on the tip? What did the total weight end up at?
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Old 05-08-2007, 06:36 AM
  #30  
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Default RE: How to design an Extreme FOC hunting arrow

I'm guess-ta-mating just under 700 grain.
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