Bow efficiency?
09-03-2003, 11:47 AM
#1
Typical Buck
Thread Starter
Join Date: Feb 2003
Location: Havre de Grace MD USA
Posts: 703
Bow efficiency?
What formula is used to determine the efficiency of your bow?
If this is important information why is it not included with the purchase of your bow?
How can I use this information to super tune my bow?
How can you alter or tweek this efficiency?
A big thanks to everyone!
If this is important information why is it not included with the purchase of your bow?
How can I use this information to super tune my bow?
How can you alter or tweek this efficiency?
A big thanks to everyone!
09-04-2003, 11:23 AM
#4
Nontypical Buck
Join Date: Feb 2003
Location:
Posts: 2,994
RE: Bow efficiency?
mlaubner, I hope someone in the know stops by and answers this, as it' s something I' ve always wondered about and kept meaning to ask but always forgot...
Board' s been kind of slow lately, hopefully it will pick up soon...
Board' s been kind of slow lately, hopefully it will pick up soon...
09-04-2003, 01:48 PM
#6
Giant Nontypical
Join Date: Feb 2003
Location:
Posts: 7,571
RE: Bow efficiency?
I guess I am a little lost by your question. Are you asking how efficient the bow can transfer energy from the bow to the arrow? If so, a lot would depend on the weight of the arrow. A bow would be less efficient on a very light arrow (say 5 grains per pound) as compared to a heavier arrow (say 9 grains per pound). On the lighter arrow, the energy not used still has to be expended through different medians such as shock, noise, vibration, etc.
09-04-2003, 03:05 PM
#8
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 1,051
RE: Bow efficiency?
DaveC, that shouldn' t be too hard. I shoot 70 lbs, a 2514 arrow that weighs 560 grains at around 230 fps and I' m at 65.796 ft/lbs. And that' s with soft cams. Any hard cam bow or single cam bow should be able to get you there pretty easily. Trick is, getting both speed, and arrow weight up there. Are you sure you' re not getting that kind of KE now?
09-04-2003, 03:36 PM
#10
Typical Buck
Thread Starter
Join Date: Feb 2003
Location: Havre de Grace MD USA
Posts: 703
RE: Bow efficiency?
Thanks, I really appreciate it.
In my tinkering I have found a website that requires you to enter your bow efficiency to acquire some other info.
Here is the link http://home.att.net/~sajackson/archery2.html
Also, what is SE/PDF ratio? and how do you determine " virtual mass" ?
HELP!
In my tinkering I have found a website that requires you to enter your bow efficiency to acquire some other info.
Here is the link http://home.att.net/~sajackson/archery2.html
Also, what is SE/PDF ratio? and how do you determine " virtual mass" ?
HELP!