Phew. Finally someone simplified it. 
You need to calculate the % increase (or decrease) in weight you want, then take the cube root of that to get the percentage change in the stack height.
For example:
Existing stack is 0.500", weight is 50# @ 28". Say we want the new bow to be 55# @ 28".
% change in weight = 55/50 = 1.10
Take the cube root of that = (1.10)^1/3 = 1.032
New stack height = 0.500 x 1.032 = 0.516"
Works the same way for reductions. Say we want the new bow to be 45# @ 28" instead of 55# as above.
% change = 45/50 = 0.90
Cube root = (0.90)^1/3 = 0.9655
New stack = 0.500 x 0.9655 = 0.483"
I was able to move it to Exel and could plot in the numbers I wanted, but I can’t make it calculate. I have to find someone who knows this stuff.
That is bizarre, it should automatically recalculate when opened in Excel. Do you want to try the copy I have? I could email it direct to you if you want.
Mark
Topic: Stack help please :) (Read 4052 times)
