It isn't bad, 10 to 15 is workable in most cases. I prefer the higher side myself. I have used less than that with good success though.
Less FOC is a bit harder to tune and your arrows are not as forgiving. The tip tends to want to wander and it seems as if the fletchings don't have as much control. Less FOC usually likes more fletching.
More FOC seems to be more stable and more forgiving or tuning errors. Also from what I have been reading it has better penetration if everything else is equal.
The downfalls I would see to lots of FOC would be you would need a stiffer spined arrow which usually means heavier, and the added tip weight would make your arrow heavy. It also seems that more weight forward would effect your trajectory, but I can't attest to that without doing some testing and research or playing with some ballistics calculators. It certainly wouldn't be enough that I would worry about it at hunting distances.
And I personally don't see the added weight being an issue either. Most could use heavier arrows. The ONLY downfall to heavy arrows is the loss of speed compared to a lighter one. Everything else is a plus.
My opinions anyway.
Paul
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Your arrows are fling great , is that with a fixed broadhead attached ?
If so thats good , but a low foc arrow , with a fixed head , in the wind is very squirly
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Low FOC with fixed broadhead and are flying great with straight fletching!
Here's hoping the wind never kicks up on you. Low FOC with fixed blade heads and straight fletching is not the recommended formula for success. Can it work? Sure. However, it won't have much built in forgiveness when acted upon by an outside force (read - twig, wind, bow torque, bone hit and other anomalies that tend to occur while hunting)
Foreward of center or something.
Distance of center of balance from the center of the arrow/length of arrow*100=FOC% (I think)
The distance of the arrow measured from tip of nock to point of the broadhead, right?
=>>>------------------>
|_______length________|
.|__not correct_______|
To findForward/Front Of Center of an arrowfind the balance point of your finished arrow(with tip, fletchings etc.)by balancing it on a sharp edge. Mark this point. Measure from this point to the valley in the nock. To find the center of the shaft measure from the valley in the nock where it rests on the string to the end of the blank(not the insert), then take this measurement and divide it by 2. Take your balance point measurement and your center measurement and subtract the larger from the smaller(balance - center). Then take your difference measurement from the center and balance point and divide it from total arrow length. Then multiply thedecimal by 100. The eqaution goes like this: FOC=[(BP-EC)/TAL] x 100. This will give you the percent ofyour FOC.
Terms: FOC=Forward/Front OF Center
BP=Balance Point
EC=Exact Center of shaft
TAL=Total Arrow Length
For a good flying hunting shaft you want a FOC % between 8-15 percent. Hope you understand this. If not then google Arrow Front OfCenter on the web and that should give you a couple sites that explain this in detail.
Curtis
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A bad day in the woods is still better than a good day at work.
FOC?
