Heavy arrow, more KE....light arrow, more speed..??
12-26-2006, 05:19 PM
#172
Nontypical Buck
Join Date: Feb 2003
Location: Norman OK USA
Posts: 3,318
RE: Heavy arrow, more KE....light arrow, more speed..??
ORIGINAL: mobowhuntr
Macho don't got jack sheet to do with any of it. Rob's not sticking arrows in the ground beyond the deer for who the hell knows why.....There are so many variables to consider, we could go on for years....Personally, I think it's the mechanicals, but that's my opinion. I wasn't there, I didn't see them, I don't know for sure.
Macho don't got jack sheet to do with any of it. Rob's not sticking arrows in the ground beyond the deer for who the hell knows why.....There are so many variables to consider, we could go on for years....Personally, I think it's the mechanicals, but that's my opinion. I wasn't there, I didn't see them, I don't know for sure.
12-26-2006, 06:28 PM
#173
Super Moderator
Join Date: Feb 2003
Location: Southeast Central Illinois USA
Posts: 6,969
RE: Heavy arrow, more KE....light arrow, more speed..??
mo, seriously I think you have momentum coupled with KE mixed up. Its to my understanding that you have more momentum with a heavier arrow. What I am getting at is this. As you said earlier, at longer distances the heavier arrow shooting less FPS will drop more, but alas the lighter arrow also slows down faster, thus the heavier arrow should have more momentum upon impact.
At least that is what I have always read and heard............I know.
At least that is what I have always read and heard............I know.
12-26-2006, 06:47 PM
#174
Join Date: Jan 2004
Location: Eureka, MO
Posts: 3,703
RE: Heavy arrow, more KE....light arrow, more speed..??
ORIGINAL: Cougar Mag
mo, seriously I think you have momentum coupled with KE mixed up. Its to my understanding that you have more momentum with a heavier arrow. What I am getting at is this. As you said earlier, at longer distances the heavier arrow shooting less FPS will drop more, but alas the lighter arrow also slows down faster, thus the heavier arrow should have more momentum upon impact.
At least that is what I have always read and heard............I know.
mo, seriously I think you have momentum coupled with KE mixed up. Its to my understanding that you have more momentum with a heavier arrow. What I am getting at is this. As you said earlier, at longer distances the heavier arrow shooting less FPS will drop more, but alas the lighter arrow also slows down faster, thus the heavier arrow should have more momentum upon impact.
At least that is what I have always read and heard............I know.
For example, say you shoot a 350 grain arrow at 300 fps. This gives you .4655 lb-sec of momentum and 70 ft-lbs of KE.
A 400 grain arrow traveling 283 fps will have .5019 lb-sec of momentum and 71 ft-lbs of KE.
I wish I could tell you how much of a difference .0364 lb-sec makes.
12-26-2006, 06:50 PM
#176
Join Date: Jan 2004
Location: Eureka, MO
Posts: 3,703
RE: Heavy arrow, more KE....light arrow, more speed..??
ORIGINAL: mobowhuntr
Cougar, you are 100% correct. My only point though is that either way I will have enough of both.
Cougar, you are 100% correct. My only point though is that either way I will have enough of both.
12-26-2006, 09:02 PM
#177
Super Moderator
Join Date: Feb 2003
Location: Southeast Central Illinois USA
Posts: 6,969
RE: Heavy arrow, more KE....light arrow, more speed..??
My only point though is that either way I will have enough of both.
By the way, are you still going to go with mechanical broadheads or at least try them? Just wondering.
12-26-2006, 09:41 PM
#178
Thread Starter
Join Date: Mar 2004
Location:
Posts: 13,082
RE: Heavy arrow, more KE....light arrow, more speed..??
Yeah, I've been shooting Stingers all season, and have had good luck w/ them. I've kept a couple arrows w/ Hammerheads in my quiver for turkeys....But I like the idea of a big cutting diameter....I have all Hammerheads in my quiver now...no Stingers.
My biggest problem..... I like to tinker too darn much! LOL......Tinkering is how I learn, though.
My biggest problem..... I like to tinker too darn much! LOL......Tinkering is how I learn, though.
12-27-2006, 07:53 AM
#180
Join Date: Dec 2006
Location:
Posts: 24
RE: Heavy arrow, more KE....light arrow, more speed..??
To the original post
"Ideally" both arrows have the same KE, one arrow faster but lighter, the other slower but heaver.
Penetrationis a function of the charactistics of the arrow(diameter, target resistence, etc.) There are many other variables (losses) to consider. Velocity should be taken at the very instantance just before impact, the problem with this some losses have already occurred (air friction, etc.) and are probably different for different arrows thatinitially possesedthe same KE when loosed.
Although I am a BowTech man, the best technacal response I have seen is on the Mathews web site by thereengineer(s) and the formulas are correct. You may want to go to that site and look atthe "ideal" response/conditions and maybe pose a/the question to them. http://forums.mathewsinc.com/viewtopic.php?t=39781
I have also found some interesting information on the following web site http://homepage.ntlworld.com/joetapley/
Respectifully Dave
"Ideally" both arrows have the same KE, one arrow faster but lighter, the other slower but heaver.
Penetrationis a function of the charactistics of the arrow(diameter, target resistence, etc.) There are many other variables (losses) to consider. Velocity should be taken at the very instantance just before impact, the problem with this some losses have already occurred (air friction, etc.) and are probably different for different arrows thatinitially possesedthe same KE when loosed.
Although I am a BowTech man, the best technacal response I have seen is on the Mathews web site by thereengineer(s) and the formulas are correct. You may want to go to that site and look atthe "ideal" response/conditions and maybe pose a/the question to them. http://forums.mathewsinc.com/viewtopic.php?t=39781
I have also found some interesting information on the following web site http://homepage.ntlworld.com/joetapley/
Respectifully Dave