Spine Chart for Arrows

on

Measure the deflection of the arrow by a 2 pound weight. The measurement should be in inches.

Each end of the arrow should be supported to allow a 26" gap between.


1.300


20


#


0.650


40


#


0.433


60


#


0.325


80


#


1.248


21


#


0.636


41


#


0.426


61


#


0.321


81


#


1.196


22


#


0.621


42


#


0.420


62


#


0.317


82


#


1.144


23


#


0.607


43


#


0.413


63


#


0.314


83


#


1.092


24


#


0.592


44


#


0.407


64


#


0.310


84


#


1.040


25


#


0.578


45


#


0.400


65


#


0.306


85


#


1.005


26


#


0.057


46


#


0.394


66


#


0.303


86


#


0.971


27


#


0.555


47


#


0.388


67


#


0.299


87


#


0.936


28


#


0.543


48


#


0.383


68


#


0.296


88


#


0.902


29


#


0.532


49


#


0.377


69


#


0.292


89


#


0.867


30


#


0.520


50


#


0.371


70


#


0.289


90


#


0.842


31


#


0.511


51


#


0.366


71


#


0.286


91


#


0.817


32


#


0.501


52


#


0.361


72


#


0.283


92


#


0.793


33


#


0.492


53


#


0.357


73


#


0.280


93


#


0.768


34


#


0.482


54


#


0.352


74


#


0.277


94


#


0.743


35


#


0.473


55


#


0.347


75


#


0.274


95


#


0.724


36


#


0.465


56


#


0.343


76


#


0.271


96


#


0.706


37


#


0.457


57


#


0.338


77


#


0.268


97


#


0.688


38


#


0.449


58


#


0.334


78


#


0.265


98


#


0.669


39


#


0.441


59


#


0.329


79


#


0.260


99


#


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