3Rivers Archery



The Trad Gang Digital Market












Contribute to Trad Gang and Access the Classifieds!

Become a Trad Gang Sponsor!

Traditional Archery for Bowhunters






LEFT HAND BOWS CLASSIFIEDS TRAD GANG CLASSIFIEDS ACCESS RIGHT HAND BOWS CLASSIFIEDS


« previous next »
Pages: [1]   Go Down

Author Topic: spine change  (Read 349 times)

Offline tiur

  • Trad Bowhunter
  • **
  • Posts: 93
spine change
« on: January 05, 2013, 12:19:00 PM »
Hi all,
Question : by changing point from 300gr to 200 gr can the extra lenght of arra be calculated?
Currently shooting Easton flatliner 400spine with 300 on the nose .
thanks
Asgeir
Logged

Offline lpcjon2

  • Trad Bowhunter
  • **
  • Posts: 7673
Re: spine change
« Reply #1 on: January 05, 2013, 02:10:00 PM »
How much extra lenght are you talken about, a 100gr change will make the arrow stiffer I believe. but Stews calc can figure the math for ya.The length is the same and the head weight change doesnt change the length of the arrow.
Logged
Some people live an entire lifetime and wonder if they have ever made a
difference in the world, but the Marines don’t have that problem.
—President Ronald Reagan

Offline lpcjon2

  • Trad Bowhunter
  • **
  • Posts: 7673
Re: spine change
« Reply #2 on: January 05, 2013, 08:58:00 PM »
TTT
Logged
Some people live an entire lifetime and wonder if they have ever made a
difference in the world, but the Marines don’t have that problem.
—President Ronald Reagan

Offline onewhohasfun

  • Trad Bowhunter
  • **
  • Posts: 735
Re: spine change
« Reply #3 on: January 06, 2013, 05:25:00 AM »
Sorry, I don't have an answer for you, but I think I understand your question.
Does 100 grn. of tip weight equal 1 inch of arrow length, or 2 inches of arrow length?
Logged
Tom

Offline tiur

  • Trad Bowhunter
  • **
  • Posts: 93
Re: spine change
« Reply #4 on: January 06, 2013, 10:41:00 AM »
Tom,
right on- maybe somebody could run this senario in Stu,s calculator - here we go Easton flatliner 400 spine - current 30" lenght with 300gr on tip - what would be lenght be if 200gr was to be used - dynamic spine calculation I assume.
Thanks
Asgeir
Logged

Offline **DONOTDELETE**

  • Trad Bowhunter
  • **
  • Posts: 10441
Re: spine change
« Reply #5 on: January 06, 2013, 11:52:00 AM »
Well if you are contemplating longer shafts you certainly cant stretch them....

buy some full length shafts and test em at 32" and see....if they are too limber cut them 1/4" at a time until they fly right.... all the math in the world wont replace shooting the dad burn things...

too many factors like preload on the bow string, and shelf differences to get a generic formula... that goes for stews calculator too. all arrows don't come out of the chute equally.
Logged
Pages: [1]   Go Up
« previous next »

Users currently browsing this topic:

0 Members and 1 Guest are viewing this topic.
 

Contact Us | Trad Gang.com © | User Agreement

Copyright 2003 thru 2024 ~ Trad Gang.com ©