Author Topic: Stack help please :)  (Read 4302 times)

Online Crooked Stic

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Re: Stack help please :)
« Reply #40 on: January 24, 2022, 08:25:09 AM »
Yeah clear as mud.
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Online mmattockx

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Re: Stack help please :)
« Reply #41 on: January 24, 2022, 10:28:32 AM »
Phew.  Finally someone simplified it.  :biglaugh:

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





Offline Buemaker

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Re: Stack help please :)
« Reply #42 on: January 24, 2022, 02:51:26 PM »
Yes Mark, that would be great. I sent a PM
« Last Edit: January 24, 2022, 02:57:22 PM by Buemaker »

Online mmattockx

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Re: Stack help please :)
« Reply #43 on: January 24, 2022, 04:29:57 PM »
Yes Mark, that would be great. I sent a PM

Email has been sent. Hopefully this one is more successful for you.

Alternatively, you could use the method I showed above with a scientific calculator to crunch the numbers if this file won't work either.


Mark

Offline Buemaker

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Re: Stack help please :)
« Reply #44 on: January 24, 2022, 05:16:30 PM »
It works, thank you. :)
« Last Edit: January 24, 2022, 06:04:48 PM by Buemaker »

Online Crooked Stic

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Re: Stack help please :)
« Reply #45 on: January 24, 2022, 07:00:23 PM »
The cube root method is what I us .
You can Google cube root calculator that will ease your brain.  :bigsmyl:
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Online Jeff Freeman

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Re: Stack help please :)
« Reply #46 on: January 25, 2022, 06:15:52 PM »
Like I mentioned. I'm not good at math. I'll use my bowyerscore math. Time X's trial and error - a few errors + keep records ÷ 1 decade ## = I'll stick with how I've been doing it.✓ works for me 😂🤣🤓
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Offline Mad Max

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Re: Stack help please :)
« Reply #47 on: January 29, 2022, 08:55:41 AM »
Sorry Bue
I must have missed something :knothead:

Did anyone try the link I posted on Reply 22
I would rather fail at something above my means, than to succeed at something  beneath my means  
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Online mmattockx

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Re: Stack help please :)
« Reply #48 on: January 29, 2022, 10:15:08 AM »
Sorry Bue
I must have missed something :knothead:

Did anyone try the link I posted on Reply 22

I just downloaded it and it works for me. Ad Aware did give me a security warning for that page, though.


Mark

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