Author Topic: Arrow spine not making sense, to me  (Read 807 times)

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Offline BowEd

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Re: Arrow spine not making sense, to me
« Reply #15 on: October 06, 2017, 08:47:26 am »
last tip. when bareshafting- i finish up just a tad weak- as the fletching will stiffen the shaft a wee bit
I've noticed that too or is it that the feathers stabilize the shaft a bit quicker then shooting bare shaft.
Beadman
You got to stand for something or you'll fall for anything.
Ed

Offline TSA

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Re: Arrow spine not making sense, to me
« Reply #16 on: October 06, 2017, 08:26:50 pm »
this is something i want to test  soon, i want to test the theory that weight on the stern of the arrow will do the opposite of weight on the front.
there must aslo be a point of no return too!
but i think i am going to experiment with drilled in inserts in the nock- and see what i can find!

Offline TSA

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Re: Arrow spine not making sense, to me
« Reply #17 on: October 06, 2017, 08:31:20 pm »
now to throw a cat amongst the pigeons:
put broadheads on, and they will tell a different story again

if the shafts are a bit stiff, the broadhead group will hit to the left of the field point group!!
so opposite of what bare shafts and field points do as a group!! ;D ;D

good luck fellas!!

Offline BowEd

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Re: Arrow spine not making sense, to me
« Reply #18 on: October 06, 2017, 08:34:56 pm »
My way would be to drill a hole in the nock end 4" and insert soldering wire of 60 grains or so like lead.....lol.I've done that to bamboo on the front end to increase weight.I would think it would affect the flight some.Not recover as quickly or something like that.
Beadman
You got to stand for something or you'll fall for anything.
Ed

Offline BowEd

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Re: Arrow spine not making sense, to me
« Reply #19 on: October 06, 2017, 08:36:42 pm »
I always wondered why broadheads are supposed to make the shaft weaker even though they are the same weight.Suppose it's the air it catches.
Beadman
You got to stand for something or you'll fall for anything.
Ed

Offline TSA

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Re: Arrow spine not making sense, to me
« Reply #20 on: October 07, 2017, 12:42:03 pm »
thats exactly what i was thinking too!
i will try different weights, and and note the changes.
i think i will do the tests with a Glass( are we even allowed to say that here :) ) bow and a home built shooting machine- so that the draw and release is exactly the same.

Offline loon

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Re: Arrow spine not making sense, to me
« Reply #21 on: October 07, 2017, 02:01:50 pm »
Wouldn't a center cut shelf change stuff considerably?

Offline TSA

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Re: Arrow spine not making sense, to me
« Reply #22 on: October 09, 2017, 05:33:39 pm »
yup for sure, the centercut bow will require a stiffer shaft to perform properly, but the science stays the same.
i have found that the further from center the arrow pass is, the more specific a spine a bow needs to be properly tuned, and the closer to center, the wider range of spines a bow will shoot well with.