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stu's calculator help
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Topic: stu's calculator help (Read 125 times)
LeverActionman
Trad Bowhunter
Posts: 195
stu's calculator help
«
on:
June 24, 2010, 03:25:00 PM »
Trying to use stu's calculator but don't know the weight of my wood arrows any help would be great.I have cedar and spruce and need to know how much they weigh per in. I have no way to weigh them.If someone could get me close.
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Van/TX
Trad Bowhunter
Posts: 1216
Re: stu's calculator help
«
Reply #1 on:
June 24, 2010, 03:56:00 PM »
Cedar can vary 150 grains or more per shaft even with the same spine and diameter. So it would be difficult to guess. You could build a simple balance beam and use coins for weight to come close. You can google coin weights
...Van
That blue thing on the base is a 1 ounce shot gun slug (437 grains) so you don't have to use so many coins..
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Retired USAF (1966 - 1989)
Retired DoD Civilian (1989 - 2009)
And drawing Social Security!
I love this country ;-)
Islandlongbow
Trad Bowhunter
Posts: 236
Re: stu's calculator help
«
Reply #2 on:
June 25, 2010, 02:37:00 AM »
Van that's cool!
Jerry
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Procrastination is the thief of time.
Smallwood
Trad Bowhunter
Posts: 1368
Re: stu's calculator help
«
Reply #3 on:
June 25, 2010, 10:45:00 AM »
11.1 gpi- Sitka Spruce
12.2 gpi- Port-Orford Cedar
13.5 gpi- Douglas Fir
Wood Shaft Diameters to be used with the Dynamic Spine Calculator--------
5/16" - 0.313
11/32" - 0.344
23/64" - 0.359
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