KE help for the new guy
08-02-2003, 09:45 AM
#1
Fork Horn
Thread Starter
Join Date: Jul 2003
Location: Northern Neck VA
Posts: 465
KE help for the new guy
Well first I would like to say hello from VA to everyone, I have done some looking around the board and liked what I saw alot, seems like a lot of friendly folks on here so I figured I would throw my hat in thr ring as well..
NOw to my first( maybe of many lol ) question. I would like to know the KE of my bow and maybe how you figure that out..
2003 Hoyt Supertech with the spiral cam and 1/2 set up
WB qs rest
29" draw
set right on 70 lbs per the scale
30" Pse carbons @ 349 grains total weight with head
chrono speed of 310 fps
also I see you all talking about different little fine tuning things such as twisting your string, I have not done that how would I do it and how much would it help, any other little fine tunning? I shot for awhile then took a few year break and have been shoting for a couple of years but now I want to get more into the tech side of my bow... I love shoting and would love to be able to tweak little things myself....
thanks for any info.....
Justin
NOw to my first( maybe of many lol ) question. I would like to know the KE of my bow and maybe how you figure that out..
2003 Hoyt Supertech with the spiral cam and 1/2 set up
WB qs rest
29" draw
set right on 70 lbs per the scale
30" Pse carbons @ 349 grains total weight with head
chrono speed of 310 fps
also I see you all talking about different little fine tuning things such as twisting your string, I have not done that how would I do it and how much would it help, any other little fine tunning? I shot for awhile then took a few year break and have been shoting for a couple of years but now I want to get more into the tech side of my bow... I love shoting and would love to be able to tweak little things myself....
thanks for any info.....
Justin
08-02-2003, 09:52 AM
#2
Nontypical Buck
Join Date: Feb 2003
Location: Crosby TX USA
Posts: 2,599
RE: KE help for the new guy
74 ft-lbs KE.
How do I come to that conclusion?
I get lazy and type in the numbers on bowjackson.com' s website.
There is a formula, but as long as I' m sitting in front of a computer I punch the # and wait a milla second or two for the answer.
How do I come to that conclusion?
I get lazy and type in the numbers on bowjackson.com' s website.
There is a formula, but as long as I' m sitting in front of a computer I punch the # and wait a milla second or two for the answer.
08-02-2003, 10:50 AM
#3
Giant Nontypical
Join Date: Feb 2003
Posts: 9,175
RE: KE help for the new guy
Welcome to the forum, eng!
If you' d like to have the formula, it' s arrow speed squared times arrow weight, divided by 450240.
So:
(310^2 X 349)/450240 = 74.49 ft lbs
Like DaveC says though, it' s just as easy to plug in the numbers on Jackson' s site. Probably better than having formulas cluttering up your brain cells.
If you' d like to have the formula, it' s arrow speed squared times arrow weight, divided by 450240.
So:
(310^2 X 349)/450240 = 74.49 ft lbs
Like DaveC says though, it' s just as easy to plug in the numbers on Jackson' s site. Probably better than having formulas cluttering up your brain cells.
08-02-2003, 01:28 PM
#4
Nontypical Buck
Join Date: Feb 2003
Location: Oh USA
Posts: 1,584
RE: KE help for the new guy
For a hunting setup you could shoot a heavier arrow & still have good speed, around 270-280. That would give you more momentum, increasing penetration should you hit bone. I' m surprised you didn' t point that out Arthur (the heavier arrow).
08-03-2003, 10:51 AM
#7
Fork Horn
Thread Starter
Join Date: Jul 2003
Location: Northern Neck VA
Posts: 465
RE: KE help for the new guy
Thanks for the info about KE and the formula to figure it out! I leanr somethign everytime I come on here, I feel like I just picked up a bow for the first time lol !!!
