Weight and spine on woods

[Dan bree]

How much tip weight would change the spine on wood shafts

[Pat B]

+25gr would weaken by 5# of spine weight.

[Bjorn]

Pat x 2. My experience as well.

[Fletcher]

For me, higher spines, 75+, seemed to be affected less, but in the 50-70 range I found about 5-6 gr equaled a pound of spine.  That is right in line with Pat and Bjorn.

[Surewood Steve]

According to ACE Archery, if the point is more than 125 gr. add 1# of spine for each additional 7 grains of head weight.

[snag]

Originally posted by Surewood Steve:
According to ACE Archery, if the point is more than 125 gr. add 1# of spine for each additional 7 grains of head weight.

2X

Steve I like the tag line on your postings too!  

[Sam McMichael]

I am glad to see this. This has crossed my mind several times, but this is the first time I remember it discussed. Thanks, guys.