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Main Boards => PowWow => Topic started by: SELFBOW19953 on February 10, 2012, 10:31:00 PM

Title: Dynamic Spine calculators
Post by: SELFBOW19953 on February 10, 2012, 10:31:00 PM
Question for all the bare shaft advocates out there.  Rev 12/25/10 V2 Dynamic Spine Calculator allows me to select betwen a bare shaft and the final version of the shaft I want to shoot (number of feathers and length).  There seems to be enough difference between the two (more than the 2 pounds of dynamic spine recommended) that adjusting the brace height isn't enough to compensate.  Which do I tune for??
Title: Re: Dynamic Spine calculators
Post by: JamesKerr on February 10, 2012, 11:06:00 PM
I set-up all my selections in the calculator based on the complete fletched arrow. Once I find a shaft that is close(within 2 pounds). I then start bare shaft tuning usually an inch longer than the calculator recommends and cut off 1/8" untill it tunes in perfect. My latest arrows tuned in exactly where the calculator said they would, but it is still better to do the tuning yourself.