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Author Topic: Made my own spine tester.  (Read 3074 times)

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Offline lenador

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Made my own spine tester.
« on: October 31, 2014, 08:35:19 am »
Made it from pieces of scrap would that would of just been firewood. I took a really simple approach to it. Essential I eliminated the whole need and gauge for a simple broken piece of tape measure and I measure off the weight itself. The weight was made of scrap metal.
 I tested some carbon arrows on it and my tester was only off by 1/200th of an inch so its very very close. The 400 arrow on my scale read 405.

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Offline Knoll

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Re: Made my own spine tester.
« Reply #1 on: October 31, 2014, 06:51:20 pm »
Lookin' good.  Possible to show us how you're doing the measurement?
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... alone in distant woods or fields, in unpretending sproutlands or pastures tracked by rabbits, even in a bleak and, to most, cheerless day .... .  I suppose that this value, in my case, is equivalent to what others get by churchgoing & prayer.  Hank Thoreau, 1857

Offline lenador

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Re: Made my own spine tester.
« Reply #2 on: October 31, 2014, 07:18:58 pm »
Yeah I'll get a picture later. I haven't comlletlwy finished that part yet.
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Offline 1442

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Re: Made my own spine tester.
« Reply #3 on: November 02, 2014, 11:07:51 pm »
that ought to work. good way to make a quick easy way to read the deflection measurement
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Grasshopper Mouse

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Re: Made my own spine tester.
« Reply #4 on: November 04, 2014, 03:03:07 pm »
You mentioned using carbon arrows to check this tester you made. Keep in mind that carbon shafts are tested on supports 28" apart using a 1.94lb weight.
Wood shafts are tested on supports 26" apart using a 2lb weight.
Testing a carbon shaft on a wood setup could give you some wonky readings.
Don't ask me why there are two different testing standards.

Guy
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Offline lenador

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Re: Made my own spine tester.
« Reply #5 on: November 04, 2014, 08:39:58 pm »
Him I didn't realize that maybe that is why mine was 1/200th over.
 Really since I plan to make my own shafts I'm moteninerested in the number I get on my scale so I can shoot consistent arrows.
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Grasshopper Mouse

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Re: Made my own spine tester.
« Reply #6 on: November 04, 2014, 10:00:16 pm »
If you use the tester as a point of reference then it will work great.

Guy
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