Anyone ever heard of 97.3fp of KE?
12-20-2007, 07:53 PM
#51
Join Date: Mar 2004
Location:
Posts: 13,082
RE: Anyone ever heard of 97.3fp of KE?
ORIGINAL: Matt/TN
Weren't the Guardian's late last year?
ORIGINAL: buckeye
BowTech does 
I'd like to find a company that makes left handed stuff in a timely manner. It gets VERY old, lol.
12-21-2007, 03:55 AM
#54
Fork Horn
Join Date: Sep 2006
Location: Western NY
Posts: 148
RE: Anyone ever heard of 97.3fp of KE?
ORIGINAL: Washington Hunter
I have to ask though;
For the majority of the hunting most folks on this forum do (whitetail and turkey) how necessary is it to generate that much KE?
Seems to me that KE in the mid- to upper 60's would be more than enough.
I have to ask though;
For the majority of the hunting most folks on this forum do (whitetail and turkey) how necessary is it to generate that much KE?
Seems to me that KE in the mid- to upper 60's would be more than enough.
12-21-2007, 08:06 AM
#56
Giant Nontypical
Join Date: Feb 2003
Location:
Posts: 7,571
RE: Anyone ever heard of 97.3fp of KE?
ORIGINAL: Sylvan
Whatimpresses me about a bow is not whether the result is 97.3, 150.3 or 50.3 ft/lbs of KE but rather how much of the workdone to draw the bow back actually winds up as arrow kinetic energy. In other words, how efficient is it? If I weretrying to maximize KE and my choice is between a bow that transfers 80% of the stored energy to a given weight arrow and one that transfers 85% then no question I'd gowith the 85% model. All else would be irrelevant. Just telling me that a bow shot an arrow at90 ft/lbs doesn't mean much. Now if the archer only did 100 ft/lbs of work to get that result then man you've really got something. That's 90% efficient! But, ff he did 180 ft/lbs of work then in my opinion the bow is crap at only 50% efficient.
I like to keep in mind that ALL the energy that winds up on the arrow comes from the archer, not the bow. The better the bow at transfering that energy the more KE you wind up with, but an archer that is physically capable of a maximum of say 80 ft/lbsis never going to throw an arrow at 81 ft/lbs ke and it doesn't matter what bow he buys.
Whatimpresses me about a bow is not whether the result is 97.3, 150.3 or 50.3 ft/lbs of KE but rather how much of the workdone to draw the bow back actually winds up as arrow kinetic energy. In other words, how efficient is it? If I weretrying to maximize KE and my choice is between a bow that transfers 80% of the stored energy to a given weight arrow and one that transfers 85% then no question I'd gowith the 85% model. All else would be irrelevant. Just telling me that a bow shot an arrow at90 ft/lbs doesn't mean much. Now if the archer only did 100 ft/lbs of work to get that result then man you've really got something. That's 90% efficient! But, ff he did 180 ft/lbs of work then in my opinion the bow is crap at only 50% efficient.
I like to keep in mind that ALL the energy that winds up on the arrow comes from the archer, not the bow. The better the bow at transfering that energy the more KE you wind up with, but an archer that is physically capable of a maximum of say 80 ft/lbsis never going to throw an arrow at 81 ft/lbs ke and it doesn't matter what bow he buys.
12-21-2007, 08:20 AM
#57
Giant Nontypical
Join Date: Nov 2004
Location: Kansas
Posts: 6,598
RE: Anyone ever heard of 97.3fp of KE?
ORIGINAL: BobCo19-65
Wow, good post. I'm impressed.
ORIGINAL: Sylvan
Whatimpresses me about a bow is not whether the result is 97.3, 150.3 or 50.3 ft/lbs of KE but rather how much of the workdone to draw the bow back actually winds up as arrow kinetic energy. In other words, how efficient is it? If I weretrying to maximize KE and my choice is between a bow that transfers 80% of the stored energy to a given weight arrow and one that transfers 85% then no question I'd gowith the 85% model. All else would be irrelevant. Just telling me that a bow shot an arrow at90 ft/lbs doesn't mean much. Now if the archer only did 100 ft/lbs of work to get that result then man you've really got something. That's 90% efficient! But, ff he did 180 ft/lbs of work then in my opinion the bow is crap at only 50% efficient.
I like to keep in mind that ALL the energy that winds up on the arrow comes from the archer, not the bow. The better the bow at transfering that energy the more KE you wind up with, but an archer that is physically capable of a maximum of say 80 ft/lbsis never going to throw an arrow at 81 ft/lbs ke and it doesn't matter what bow he buys.
Whatimpresses me about a bow is not whether the result is 97.3, 150.3 or 50.3 ft/lbs of KE but rather how much of the workdone to draw the bow back actually winds up as arrow kinetic energy. In other words, how efficient is it? If I weretrying to maximize KE and my choice is between a bow that transfers 80% of the stored energy to a given weight arrow and one that transfers 85% then no question I'd gowith the 85% model. All else would be irrelevant. Just telling me that a bow shot an arrow at90 ft/lbs doesn't mean much. Now if the archer only did 100 ft/lbs of work to get that result then man you've really got something. That's 90% efficient! But, ff he did 180 ft/lbs of work then in my opinion the bow is crap at only 50% efficient.
I like to keep in mind that ALL the energy that winds up on the arrow comes from the archer, not the bow. The better the bow at transfering that energy the more KE you wind up with, but an archer that is physically capable of a maximum of say 80 ft/lbsis never going to throw an arrow at 81 ft/lbs ke and it doesn't matter what bow he buys.
Me too! Had a simular conversation via PM's with a few other fellows on here awhile back. It's exactly what makes a good hunting bow. Good post Sylvan.
12-21-2007, 08:26 AM
#58
Dominant Buck
Thread Starter
Join Date: Oct 2005
Location:
Posts: 21,043
RE: Anyone ever heard of 97.3fp of KE?
I'd like to understand that.....but I don't (Sylvan's post).
As long as an archer has no issues pulling the draw weight.....is there a DISadvantage to more KE? I understand wantng to be "most" efficient. But I'm asking what difference it makes if the archer can handle the draw.
I won't be shooting my bow at 71#'s.....but is this a valid question?
As long as an archer has no issues pulling the draw weight.....is there a DISadvantage to more KE? I understand wantng to be "most" efficient. But I'm asking what difference it makes if the archer can handle the draw.
I won't be shooting my bow at 71#'s.....but is this a valid question?
12-21-2007, 08:34 AM
#59
Fork Horn
Join Date: Nov 2007
Location: Painesville, ohio
Posts: 486
RE: Anyone ever heard of 97.3fp of KE?
APA black Mamba x1. At 80 lbs, 30 inch, it is over 111 ftlb's of KE, easily into the high 90's at 70 if it is tuned right. quiet and shock free. Only problem, very low brace....
12-21-2007, 08:48 AM
#60
Giant Nontypical
Join Date: Feb 2003
Location:
Posts: 7,571
RE: Anyone ever heard of 97.3fp of KE?
I understand wanting to be "most" efficient. But I'm asking what difference it makes if the archer can handle the draw.