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Author Topic: 75-80 or 80-85  (Read 611 times)

Offline beaver#1

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75-80 or 80-85
« on: March 23, 2009, 09:57:00 PM »
ok im fixing to purchase some lam. birch arrows.  i have a 65 g/n critter gitter 65@ 28.  i shoot a full length arrow.  im going to put 190grns up front.  so which would i need. in general terms. i can always tweak them.
thanks
dustin parker
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have i not commanded you? be strong and of good courage;be not afraid or discouraged:for the Lord your God is with you where ever you go. joshua 1:9

Offline beaver#1

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Re: 75-80 or 80-85
« Reply #1 on: March 23, 2009, 10:28:00 PM »
any one?
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have i not commanded you? be strong and of good courage;be not afraid or discouraged:for the Lord your God is with you where ever you go. joshua 1:9

Offline Bjorn

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Re: 75-80 or 80-85
« Reply #2 on: March 23, 2009, 10:30:00 PM »
You have not told us your drawlength or string material, or the riser cut of the bow; a lot is depending on those answers.
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Offline beaver#1

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Re: 75-80 or 80-85
« Reply #3 on: March 23, 2009, 10:36:00 PM »
28" draw.  f/f not sure what type.  fairly narrow shelf
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have i not commanded you? be strong and of good courage;be not afraid or discouraged:for the Lord your God is with you where ever you go. joshua 1:9

Offline Oregon Okie

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Re: 75-80 or 80-85
« Reply #4 on: March 23, 2009, 10:42:00 PM »
Man, find that dynamic spine calculator thread and download that. You'll be playing with options for way too long. I have only shot one arrow I matched up from it but it shot well and I've heard from others that it is close. give it a shot.
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"Don't believe everything you think" - bumper sticker

"Savage Blaster" - 50@31 - 63" (recurve I made with Steve Savage)
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Online Orion

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Re: 75-80 or 80-85
« Reply #5 on: March 23, 2009, 10:43:00 PM »
Critter Gitters are cut 1/8 inch from center.  Why do you want to shoot a full length arrow (30 1/2 or 31 inches to back of point) if your draw is 28 inches?  For the additional weight?  Regardless, 75-80 will be plenty in an 11/32 shaft, if you can find it.  May want to go to 80-85 if the shaft diameter is 23/64.
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Offline beaver#1

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Re: 75-80 or 80-85
« Reply #6 on: March 23, 2009, 10:46:00 PM »
i just like a long arrow.
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have i not commanded you? be strong and of good courage;be not afraid or discouraged:for the Lord your God is with you where ever you go. joshua 1:9

Offline overbo

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Re: 75-80 or 80-85
« Reply #7 on: March 24, 2009, 08:00:00 AM »
go to 3 rivers and buy their test pak
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Offline wingnut

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Re: 75-80 or 80-85
« Reply #8 on: March 24, 2009, 08:14:00 AM »
Download this excel program:

 http://briefcase.yahoo.com/bc/[email protected]/vwp2?.tok=bcCz6kcB3cFO.9ke&.dir=/Public&.dnm=Dynamic+Spine+Calculator+Rev3-20-09.xls&.src=bc

And run your numbers.  From what I can see for a 31" arrow and 190 gr pts, you will need 90# spine.

Check it out it FREE.

Mike
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Mike Westvang

Offline beaver#1

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Re: 75-80 or 80-85
« Reply #9 on: March 24, 2009, 08:34:00 AM »
thanks wing nut, i will look at it. i never would have thought 90# spine.
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have i not commanded you? be strong and of good courage;be not afraid or discouraged:for the Lord your God is with you where ever you go. joshua 1:9

Offline Bjorn

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Re: 75-80 or 80-85
« Reply #10 on: March 24, 2009, 09:57:00 AM »
Fortunately you have 2-3" wood to spare. That can reduce your spine to the 75-80 range.
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