« previous next »
Pages: [1]

Author Topic: Point weight affect on spine  (Read 1422 times)

0 Members and 1 Guest are viewing this topic.

Offline Ifrit617

  • Member
  • Posts: 1,596
Point weight affect on spine
« on: December 30, 2012, 12:24:09 pm »
Hi guys,

I am curious what point weight's specific affect on spine is. I know the rule of thumb that a heavier point weakens the spine, but is there any specific formula? I have heard that every 15 grains or so above 125 grains reduces the spine by 5# and was wondering if this was accurate?

Jon
Logged

Offline Pat B

  • Administrator
  • Member
  • Posts: 37,542
Re: Point weight affect on spine
« Reply #1 on: December 30, 2012, 01:45:10 pm »
Jon, I think that is the formula...and of course less than 125 will increase spine.
Logged
Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Ifrit617

  • Member
  • Posts: 1,596
Re: Point weight affect on spine
« Reply #2 on: December 30, 2012, 02:03:29 pm »
Naturally ;D. Thanks for confirming this.

Jon
Logged

Offline madcrow

  • Member
  • Posts: 1,531
  • Swift, Silent, and covered in wood shavings.
Re: Point weight affect on spine
« Reply #3 on: December 31, 2012, 06:36:26 am »
Yep, I was playing around in the shop with some different sized trade points one day and had to make an arrow that spined at 100 pounds to shoot a 275 grain trade point off of 50 pound bow.
Logged

Offline PEARL DRUMS

  • Member
  • Posts: 14,079
  • }}}--CK-->
Re: Point weight affect on spine
« Reply #4 on: December 31, 2012, 08:51:40 am »
Jon I will be honest and tell you unless its 40-50 grains more, you will never notice with a selfbow at hunting distances. I have arrows with 125, 145 and 160 on them, the 160 is BARELY more quiet than the other two, POI is the same at my skill level.
Logged
Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize we cannot eat money.
Pages: [1]
« previous next »