"Momentum"
07-30-2008 | 07:26 AM
#1
Thread Starter
Dominant Buck
Joined: Oct 2005
Posts: 21,043
Likes: 0
From:
"Momentum"
This was mentioned in another thread as being a good thing (I have no doubts that it is) when determining arrow weight and its effectiveness.
I mentioned KE...and another poster eluded to (
) momentum being the most important factor....and NOT KE.
I won't argue the point....because I have no idea. But I did ask this question.....and recieved no response.
I suppose I could build a REALLY heavy arrow....and have a lot of "momentum" in my setup. But....at what point do you receive diminsihing returns?
This is of interest to me as I lower the poundage on my bow....and still try not to go with a light arrow setup.
Thanks.
I mentioned KE...and another poster eluded to (
) momentum being the most important factor....and NOT KE.I won't argue the point....because I have no idea. But I did ask this question.....and recieved no response.
How do you measure momentum.....to know if it's any good, or not.....and to determine when you are at a point of diminishing returns?
This is of interest to me as I lower the poundage on my bow....and still try not to go with a light arrow setup.
Thanks.
07-30-2008 | 07:31 AM
#2
Nontypical Buck
Joined: Aug 2006
Posts: 2,520
Likes: 0
From: Southern MD
RE: "Momentum"
Typically, questions like this are answered in the Technical forum:
http://www.huntingnet.com/forum/tm.aspx?m=2907653
http://www.huntingnet.com/forum/tm.aspx?m=2907653
07-30-2008 | 07:32 AM
#3
Nontypical Buck
Joined: Mar 2008
Posts: 2,363
Likes: 0
From: Texas
RE: "Momentum"
Velocty X Mass= momentum
Jeff, I went through the same thing a while back and after finding out the information I have found that adding weight and gaining KE you are also gaining momentum, just as long as you dont keep adding weight till your KE starts to drop.
Jeff, I went through the same thing a while back and after finding out the information I have found that adding weight and gaining KE you are also gaining momentum, just as long as you dont keep adding weight till your KE starts to drop.
07-30-2008 | 07:36 AM
#4
Giant Nontypical
Joined: Feb 2003
Posts: 7,571
Likes: 0
From:
RE: "Momentum"
I suppose I could build a REALLY heavy arrow....and have a lot of "momentum" in my setup. But....at what point do you receive diminsihing returns?
07-30-2008 | 07:39 AM
#5
Nontypical Buck
Joined: Mar 2008
Posts: 2,363
Likes: 0
From: Texas
RE: "Momentum"
ORIGINAL: TexasBowHunter
Velocty X Mass/225120= momentum I left out the divider in the other post!!!
Jeff, I went through the same thing a while back and after finding out the information I have found that adding weight and gaining KE you are also gaining momentum, just as long as you dont keep adding weight till your KE starts to drop.
Velocty X Mass/225120= momentum I left out the divider in the other post!!!
Jeff, I went through the same thing a while back and after finding out the information I have found that adding weight and gaining KE you are also gaining momentum, just as long as you dont keep adding weight till your KE starts to drop.
07-30-2008 | 08:12 AM
#6
Thread Starter
Dominant Buck
Joined: Oct 2005
Posts: 21,043
Likes: 0
From:
RE: "Momentum"
Breaking this down into a unting scenario (for you, Bruce).....I'll be shooting 60#'s and using a/c/c 3-49's, this fall. RIGHT NOW.....my plan is to utilize a 100gr BH (mechanical). I think I'll be getting +/- 290fps out of this setup.....and my total arrow weight will be in the 375gr. range (+/- 5 gr).
That's +/- 70FPKE.
"IF" I thought I could go with a 125gr head and not require an arrow change (due to spine).....I'd consider it. It would help my FOC.....AND (I assume) my "momentum".
But it would slow my arrow down, I would think, considerably. So how does that compute as far as "diminshing returns"?
Thanks for all your help.
).....I'll be shooting 60#'s and using a/c/c 3-49's, this fall. RIGHT NOW.....my plan is to utilize a 100gr BH (mechanical). I think I'll be getting +/- 290fps out of this setup.....and my total arrow weight will be in the 375gr. range (+/- 5 gr).That's +/- 70FPKE.
"IF" I thought I could go with a 125gr head and not require an arrow change (due to spine).....I'd consider it. It would help my FOC.....AND (I assume) my "momentum".
But it would slow my arrow down, I would think, considerably. So how does that compute as far as "diminshing returns"?
Thanks for all your help.
07-30-2008 | 08:17 AM
#7
Boone & Crockett
Joined: Sep 2005
Posts: 11,682
Likes: 0
From: Michigan/Ohio
RE: "Momentum"
Take a plastic bat and let me whack you in the head as hard as I can
Now let me do it with a wooden bat, not lets discuess diminshing returns
Jeff for every x grains one loses x FPS, I have no idea what it is.
Now let me do it with a wooden bat, not lets discuess diminshing returns
Jeff for every x grains one loses x FPS, I have no idea what it is.
07-30-2008 | 08:22 AM
#8
Typical Buck
Joined: Nov 2007
Posts: 596
Likes: 0
From: Panhandle of Texas
RE: "Momentum"
Breaking this down into a unting scenario (for you, Bruce).....I'll be shooting 60#'s and using a/c/c 3-49's, this fall. RIGHT NOW.....my plan is to utilize a 100gr BH (mechanical). I think I'll be getting +/- 290fps out of this setup.....and my total arrow weight will be in the 375gr. range (+/- 5 gr).
That's +/- 70FPKE.
"IF" I thought I could go with a 125gr head and not require an arrow change (due to spine).....I'd consider it. It would help my FOC.....AND (I assume) my "momentum".
But it would slow my arrow down, I would think, considerably. So how does that compute as far as "diminshing returns"?
).....I'll be shooting 60#'s and using a/c/c 3-49's, this fall. RIGHT NOW.....my plan is to utilize a 100gr BH (mechanical). I think I'll be getting +/- 290fps out of this setup.....and my total arrow weight will be in the 375gr. range (+/- 5 gr). That's +/- 70FPKE.
"IF" I thought I could go with a 125gr head and not require an arrow change (due to spine).....I'd consider it. It would help my FOC.....AND (I assume) my "momentum".
But it would slow my arrow down, I would think, considerably. So how does that compute as far as "diminshing returns"?
I ask this out of curiosity because with my set up, I get basically the same KE either way ( I think it was within 1#), based on the formula used for KE.
I can't remember the specifics because it was last year that I did it. But I know I was surprised that the 125 slowed down the arrow enough to keep the KE the same. However, I am assuming the 125gr has more MOMENTUM even though KE is the same. Is this correct?
07-30-2008 | 08:22 AM
#9
Giant Nontypical
Joined: Feb 2003
Posts: 5,716
Likes: 0
RE: "Momentum"
Disclaimer: There may actually be a few people out there who understand momentum. To those people, this post is not directed at you.
From my seat in the peanut gallery, it appears that "momentum" is a term reserved specifically for the internet smartass know-it-all's who like to pretend that anyone who uses "Kinetic Energy" as a barometer of their arrow's penetration power is an ill-informed illiterate dumbass.
90% of these individuals have no idea how to calculate momentum, and will read this and go look it up, just to spite me and pretend that I'm wrong.They'll be googling over the next hour, trying topuke out somepost-hoc rationaliztion thattheyactually do actually know how to come up with it. It will take them at least a half-hour to figure out the unitary conversions. Somebody may actually suffer a brain aneurysm as a result of this post.
The King is not responsible for any prospective self-inflicted brain damage or psychiatric episodes occuring in correlation to this message.
These idiotscontinue to drop the M-Bomb, in spite of the fact that the entire bowhunting world widely accepts Kinetic Energy as areasonable baseline.
I'd lay a hefty wager that most of these people had never heard of the term "momentum"until one of their internet idols used it ina post.
Momentum Schmomentum.
From my seat in the peanut gallery, it appears that "momentum" is a term reserved specifically for the internet smartass know-it-all's who like to pretend that anyone who uses "Kinetic Energy" as a barometer of their arrow's penetration power is an ill-informed illiterate dumbass.
90% of these individuals have no idea how to calculate momentum, and will read this and go look it up, just to spite me and pretend that I'm wrong.They'll be googling over the next hour, trying topuke out somepost-hoc rationaliztion thattheyactually do actually know how to come up with it. It will take them at least a half-hour to figure out the unitary conversions. Somebody may actually suffer a brain aneurysm as a result of this post.
The King is not responsible for any prospective self-inflicted brain damage or psychiatric episodes occuring in correlation to this message.
These idiotscontinue to drop the M-Bomb, in spite of the fact that the entire bowhunting world widely accepts Kinetic Energy as areasonable baseline.
I'd lay a hefty wager that most of these people had never heard of the term "momentum"until one of their internet idols used it ina post.
Momentum Schmomentum.
07-30-2008 | 08:25 AM
#10
Nontypical Buck
Joined: Dec 2003
Posts: 3,913
Likes: 0
RE: "Momentum"
ORIGINAL: quiksilver
Disclaimer: There may actually be a few people out there who understand momentum. To those people, this post is not directed at you.
From my seat in the peanut gallery, it appears that "momentum" is a term reserved specifically for the internet smartass know-it-all's who like to pretend that anyone who uses "Kinetic Energy" as a barometer of their arrow's penetration power is an ill-informed dumbass.
90% of these individuals have no idea how to calculate momentum, and will read this and go look it up, just to spite me and pretend that I'm wrong.They'll be googling over the next hour, trying topuke out somepost-hoc rationaliztion thattheyactually do actually know how to come up with it. It will take them at least a half-hour to figure out the unitary conversions. Somebody may actually suffer a brain aneurysm as a result of this post.
The King is not responsible for any prospective self-inflicted brain damage or psychiatric episodes occuring in correlation to this message.
These idiotscontinue to drop the M-Bomb, in spite of the fact that the entire bowhunting world widely accepts Kinetic Energy as areasonable baseline.
I'd lay a hefty wager that most of these people had never heard of the term "momentum"until one of their internet idols used it ina post.
Momentum Schmomentum.
Disclaimer: There may actually be a few people out there who understand momentum. To those people, this post is not directed at you.
From my seat in the peanut gallery, it appears that "momentum" is a term reserved specifically for the internet smartass know-it-all's who like to pretend that anyone who uses "Kinetic Energy" as a barometer of their arrow's penetration power is an ill-informed dumbass.
90% of these individuals have no idea how to calculate momentum, and will read this and go look it up, just to spite me and pretend that I'm wrong.They'll be googling over the next hour, trying topuke out somepost-hoc rationaliztion thattheyactually do actually know how to come up with it. It will take them at least a half-hour to figure out the unitary conversions. Somebody may actually suffer a brain aneurysm as a result of this post.
The King is not responsible for any prospective self-inflicted brain damage or psychiatric episodes occuring in correlation to this message.
These idiotscontinue to drop the M-Bomb, in spite of the fact that the entire bowhunting world widely accepts Kinetic Energy as areasonable baseline.
I'd lay a hefty wager that most of these people had never heard of the term "momentum"until one of their internet idols used it ina post.
Momentum Schmomentum.