Trad Gang

Main Boards => PowWow => Topic started by: dorris on August 13, 2007, 08:18:00 PM

Title: FOC
Post by: dorris on August 13, 2007, 08:18:00 PM
what is the best ratio for arrow/broadhead FOC
Title: Re: FOC
Post by: bm22 on August 13, 2007, 09:04:00 PM
there is no "best ratio" the most important thing is to have your arrows spined and tuned properly. then you can play with differend carbon arrow combination that shoot with a high foc.
for instance i can shoot goldtip 3555 with 125 grain tip, i can also shoot a gt 5575 with 225 up front, they spined well in my bow and shoot the good, now i chose the 5575's for the added weight and added foc.
experiment and have fun
Title: Re: FOC
Post by: dorris on August 13, 2007, 09:31:00 PM
was trying a 2117 alum. arrow it is 30 inches and the foc is at 10 " s from the point end just wondered if there was a ratio . thanks Jeff
Title: Re: FOC
Post by: katman on August 13, 2007, 11:32:00 PM
http://www.tradgang.com/upload/terry/focchart_A.pdf
Title: Re: FOC
Post by: katman on August 13, 2007, 11:33:00 PM
http://www.skookumarchers.com/Archery%20Library/FOC.htm
Title: Re: FOC
Post by: NW on August 14, 2007, 06:38:00 AM
http://home.att.net/~sajackson/archery.html
Title: Re: FOC
Post by: Rick McGowan on August 14, 2007, 12:23:00 PM
Historically, and in my experience 12% was considered ideal for hunting arrows. With 10-14 acceptable.
Title: Re: FOC
Post by: O.L. Adcock on August 14, 2007, 04:57:00 PM
Like several has pointed out the is no best ratio or optimum. Aerodynamically speaking, there is no such thing as too much FOC. I've been playing a lot with extreme FOC and the further forward the balance point is, the better everything gets. Folks like bow/arrow combinations that are forgiving, the further forward the FOC is, the faster the arrow will correct if disturbed, be it a poor release, twig, or small children....O.L.

Edit, I read that one paper by Don Morrison, he states arrows will drop faster with a more forward FOC, that is a myth. All else being equal a farther forward balance point will shoot flatter cause it doesn't burn off as much energy correcting itself...O.L.
Title: Re: FOC
Post by: dorris on August 14, 2007, 05:21:00 PM
thanks guys for everyones help .