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Queston for the wood arrow gurus.....
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Topic: Queston for the wood arrow gurus..... (Read 241 times)
TX FLY CASTER
Trad Bowhunter
Posts: 113
Queston for the wood arrow gurus.....
«
on:
August 08, 2014, 11:40:00 PM »
I would like to build some new wood arrows @ 29" bop , for a 53lb r/d longbow. If I were to use 125gr woody weights and 125gr heads for a total of 250 up front , how far up in spine should I go on the shafts? The bow is cut to center and has a b50 string. I draw 28" and this bow is right at 53 lbs at my draw length.
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robtattoo
TGMM Member
Trad Bowhunter
Posts: 3588
Re: Queston for the wood arrow gurus.....
«
Reply #1 on:
August 09, 2014, 12:00:00 AM »
60-65s should get you close
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"I came into this world, kicking, screaming & covered in someone else's blood. I have no problem going out the same way"
PBS & TBT Member
>>---TGMM, Family of the Bow--->
Fletcher
TG HALL OF FAME
Trad Bowhunter
Posts: 4523
Re: Queston for the wood arrow gurus.....
«
Reply #2 on:
August 09, 2014, 12:07:00 AM »
When you make that much of a change, it really pays to paper tune with some test arrows. The formulas are just a SWAG at best. For me, it seemed to take one pound of spine for each 5-7 grains of point weight. It also seemed that the increase in spine slowed down when point weight went over 200 gr. From 200 to 300 gr point was only a few pounds spine. I think depth of shelf cut can make a difference, too.
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Good judgement comes from experience. Experience comes from bad judgement.
"The next best thing to playing and winning is playing and losing."
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CRS
Trad Bowhunter
Posts: 514
Re: Queston for the wood arrow gurus.....
«
Reply #3 on:
August 10, 2014, 12:33:00 AM »
I would SWAG at 80-85#, maybe 85-90#, but I have not had positive results with a lot of weight up front on woodies.
I personally like 145-160gr up front on my woodies and have very good results.
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Inquiring minds.......
Tajue17
Contributing Member
Trad Bowhunter
Posts: 2798
Re: Queston for the wood arrow gurus.....
«
Reply #4 on:
August 10, 2014, 08:30:00 AM »
B50 string and 1" longer I'd try 55/60 first because believe it or not a lot depends on the side of the shelf on the bow riser and what the strike plate is doing. 55/60 or 60/65's should be about right,,,,, if you went FF and depending on the bow maybe bump the arrow to 65/70
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"Us vs Them"
cedar
Trad Bowhunter
Posts: 330
Re: Queston for the wood arrow gurus.....
«
Reply #5 on:
August 10, 2014, 10:29:00 AM »
Either 80-85 or 85-90
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elkken
Contributing Member
Trad Bowhunter
Posts: 3922
Re: Queston for the wood arrow gurus.....
«
Reply #6 on:
August 10, 2014, 11:17:00 AM »
When I used to shoot woodies out of my 55# bows with 125-145 grain BH's I shot 70-75's ... since you are adding woodie weight also, I would agree with the guys on 80-85's ... with wood I believe it's always better to error on the high side of the spine chart.
Good Luck to ya
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Sometimes it's better to be lucky than good
TGMM Family of the Bow
Jim Wright
Trad Bowhunter
Posts: 1324
Re: Queston for the wood arrow gurus.....
«
Reply #7 on:
August 10, 2014, 12:09:00 PM »
With the set-up you describe, 60-65 lb. spine would be a good starting point with 125 grain field points. Adjusting for the added 125 grain "Woody Weight" and using the "rule of thumb" 5 lbs. spine weight increase for each 35 grains point weight increase you should be close at 80-85 lb. spine wooden shafts.
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Knawbone
Trad Bowhunter
Posts: 2483
Re: Queston for the wood arrow gurus.....
«
Reply #8 on:
August 10, 2014, 08:35:00 PM »
That's a lot of weight up front for a woodie. Even with good flight your range will be thwarted by a big arch!
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HHA 5 lam Cheetah 65" 48@26
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You can do a lot of things when you have too W S Butler My Grandfather
Ray Lyon
TG HALL OF FAME
Trad Bowhunter
Posts: 3904
Re: Queston for the wood arrow gurus.....
«
Reply #9 on:
August 10, 2014, 09:41:00 PM »
I'm shooting 60-65 # tapered Sitka spruce cut 28.5" BOP with 125 grain woody weight and 125 grain point from a 1958 Kodiak . 52# @28" with b-50 string. The fly perfect.
Advice here will get you close but having test shafts around is the way to go. Everyone shoots different. If you're a wood arrow coniseur with several bows or the desire for several, do yourself a favor and get some test arrows in a multitude of spine ranges. I made up my own with leftover feathers and attach the point weight I want to use. I just did a clear sealer over the natural wood grain AFTER I wrote the spine on the raw shaft in the middle with a black permanent marker.
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Tradgang Charter Member #35
Machino
Trad Bowhunter
Posts: 136
Re: Queston for the wood arrow gurus.....
«
Reply #10 on:
August 11, 2014, 12:35:00 AM »
I'm shooting 70-75# 29 1/4" BOP Surewoods with 165 up front out of a 52# Toelke Whip at 28 1/2" draw. They seem to fly well. I agree with going somewhere in the 80# range for woodies. I'm no guru, but the research I have done to get lots of FOC out of woodies seems like more trouble than its worth. Let us know how it goes.
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FJTOYMAN
Tradbowhunter
Trad Bowhunter
Posts: 241
Re: Queston for the wood arrow gurus.....
«
Reply #11 on:
August 11, 2014, 12:09:00 PM »
Just for reference. I shoot a Wes Wallace long bow that is R/D. It's 54# at my 29"draw. I'm shooting footed arrows that I make. The foots add about 65 grains to the shaft weight with that weight being up front. I shoot 160 gn tips. My bow tunes perfect with 70-74# spine. My shelf is not cut to center.
You have 25 more grains, center cut shelf, but b50 string. I would think a 75-79# spine would work well. If your under spined a little you could always build out your shelf.
The best thing would be to get a test pack and shoot them.
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MEsquivel
Trad Bowhunter
Posts: 71
Re: Queston for the wood arrow gurus.....
«
Reply #12 on:
August 11, 2014, 12:30:00 PM »
I shoot a longbow 50# at 26". (56@28)
160gr point (595 gr total weight)
And I use 60-65 douglas fir, cut at 27.5" to bop and they make a bullet hole on paper.
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hart2hart
Trad Bowhunter
Posts: 166
Re: Queston for the wood arrow gurus.....
«
Reply #13 on:
August 11, 2014, 12:34:00 PM »
Go a little heavy and sand to fit your needs if you have access to a scale.
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