Explain FOC please

[BAO]

I see a lot of conversation regarding "extreme forward FOC".  I assume that this refers to the point on a shaft at which the shaft balances.  Am I correct?  How is "25% FOC" measured?  Thanks for educating me folks!

[wingnut]

Yep you are right, it is the balance point of the arrow.  If you balance your arrow on a fulcrum point and then measure the distance forward of the center point of the arrow.  

Mike

[BAO]

Thanks Mike.  From what I have read I am shooting for a balance point 25% from the center of the shaft towards the point, correct?

[Kingstaken]

Use this to calculate you FOC "Front of Center"

 http://home.att.net/~sajackson/archery9.html

[Dr. Ed Ashby]

Brian, under the 2007 Updates, the "Prologue" has probably more than you'll want to know about the what's and why's of arrow FOC; including the formula.

Ed
TGMM Family of the Bow

[BAO]

Thank you all for the schoolin'!