Are my arrows too light?
03-31-2005 | 07:35 AM
#1
Thread Starter
Joined: Oct 2003
Posts: 690
Likes: 0
From: Maine
Are my arrows too light?
87 pound draw weight, 30" draw length, 29 inch Gold Tip XT hunter carbons (75/95's)
75 grain heads.
Ultra nock II on string with two "Bear Puffs"
Is my arrow not heavy enough??
How many FPS should it be flying??
Thank you
75 grain heads.
Ultra nock II on string with two "Bear Puffs"
Is my arrow not heavy enough??
How many FPS should it be flying??
Thank you
03-31-2005 | 09:21 AM
#2
Joined: Sep 2003
Posts: 3,555
Likes: 0
From: Maine
RE: Are my arrows too light?
Your spine should be just fine according to the GT size chart (cut and paste to address bar, javascript:sizingChart() ) I question why you shoot such a light head though. Have you calculated the foc? You may find better arrow flight as well as increased KE with a heavier head.
For instance, I shoot 7595 advantage pro hunters which are slightly heavier arrow then the xt. My shafts are 29.75" so ever so lightly longer and I shoot a 125g head and still my foc is only 10.18%
Judging from what you've posted it appears your foc is only about 5.93% which is off the scale on the low end of the spectrum. A 125g head would bring you up 10.95% and greatly imporve arrow flight. If you want to play around with the foc calculator it's on the GT website http://www.goldtip.com/calculators/foc.asp
As fior speed the only accurate way to calculate it is with a crono IMO. If you shop has one see if you can shoot through it. Once you have your arrow speed you can calculate the ke your bow produces. http://www.goldtip.com/calculators/kinetic.asp
I think the arrows are just fine. Add a heavier head and you'll be in bussiness.
For instance, I shoot 7595 advantage pro hunters which are slightly heavier arrow then the xt. My shafts are 29.75" so ever so lightly longer and I shoot a 125g head and still my foc is only 10.18%
Judging from what you've posted it appears your foc is only about 5.93% which is off the scale on the low end of the spectrum. A 125g head would bring you up 10.95% and greatly imporve arrow flight. If you want to play around with the foc calculator it's on the GT website http://www.goldtip.com/calculators/foc.asp
As fior speed the only accurate way to calculate it is with a crono IMO. If you shop has one see if you can shoot through it. Once you have your arrow speed you can calculate the ke your bow produces. http://www.goldtip.com/calculators/kinetic.asp
I think the arrows are just fine. Add a heavier head and you'll be in bussiness.
