Is there a formula for calculating FOC?
Thanks, Hoagy
F.O.C.
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Re: F.O.C.
Some people just like stepping on rakes
Re: F.O.C.
Thanks for the link Boo, altho after i posted this question this morning i found my answer on your website, imagine that .
F.O.C. % = 100 x (B-L/2)
.........................L
B = balance point (measured from the balance point to the rear of the arrow.)
L = arrow length
Measurements are in "Decimal Inch" (for example 13.3750")
Hope this helps other newbies, & i new i could count on you Boo
Thank You, Hoagy
F.O.C. % = 100 x (B-L/2)
.........................L
B = balance point (measured from the balance point to the rear of the arrow.)
L = arrow length
Measurements are in "Decimal Inch" (for example 13.3750")
Hope this helps other newbies, & i new i could count on you Boo
Thank You, Hoagy
Last edited by Hoagy on Thu Apr 19, 2012 11:50 am, edited 3 times in total.
Re: F.O.C.
One bit of advice. Don't get hung up on FOC. High FOC and greater offset do the same thing, give better guidance.
I never measure my arrow's FOC but Easton says 10 to 15% for hunting set ups.
Keep in mind that increasing FOC to correct a flight problem is actually masking the real issue which is fine as long as you understand that. Personally I would rather correct the real underlying problem rather than mask it.
I never measure my arrow's FOC but Easton says 10 to 15% for hunting set ups.
Keep in mind that increasing FOC to correct a flight problem is actually masking the real issue which is fine as long as you understand that. Personally I would rather correct the real underlying problem rather than mask it.
Some people just like stepping on rakes
Re: F.O.C.
We'll remember that Boo, I just didn't know how to measure it which started my quest. Now i can move on to the next one.Boo wrote:One bit of advice. Don't get hung up on FOC.
Thanks, Hoagy
Re: F.O.C.
There's an easier way to measure FOC. Measure arrow length and mark the middle, then mark balance point. On 20" arrows, it's 5% per inch, 4.5% on 22". Those are for the diffs in the two marks, btw.
I'm of the opinion that there are really only 3 FOC's, low[8-10%, med[11-15%, and high[16-xx%. Add to that, higher FOC's are good for fixed blade bheads, and can hide a lot of arrow probs.
I'm of the opinion that there are really only 3 FOC's, low[8-10%, med[11-15%, and high[16-xx%. Add to that, higher FOC's are good for fixed blade bheads, and can hide a lot of arrow probs.
"Eze 18:21"
Re: F.O.C.
Well said Dan!awshucks wrote:I'm of the opinion that there are really only 3 FOC's, low[8-10%, med[11-15%, and high[16-xx%.
Some people just like stepping on rakes
Re: F.O.C.
Hey Awshucks, thanks for the info, it came out the same as the formula for sure. And is easier! Now were gonna study Blazers.awshucks wrote:There's an easier way to measure FOC.
Hoagy
Re: F.O.C.
Give the new AZ-EZ fletch tool a look while you are studying Blazers.................Hoagy wrote:Hey Awshucks, thanks for the info, it came out the same as the formula for sure. And is easier! Now were gonna study Blazers.awshucks wrote:There's an easier way to measure FOC.
Hoagy
"Eze 18:21"
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Re: F.O.C.
Higher FOC makes the arrow flex less at impact which should help penetration, which is good for hunting. That is why I like higher FOC. It also helps stabilize an arrow by increasing the efficiency of the fletching by increasing the distance between the balance point and the fletches. Using shorter fletchings and moving them back on the shaft helps with stabilization as well.
Keith
Stand by the roads and look, and ask for the ancient paths; where the good way is,
and walk in it and find rest for your souls. - Jer 6:16
Micro 335 & 355
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Stand by the roads and look, and ask for the ancient paths; where the good way is,
and walk in it and find rest for your souls. - Jer 6:16
Micro 335 & 355
deerboyarchery.wixsite.com/trinitystrings
[email protected]
<{{{><