KE question

[AZ402]

I have a new arrow set up. 484gr @290fps on a 28in arrow. What is my KE on that set up?

 

[danr55]

(484X290)squared /7000x32 should give you the ft. pound seconds of KE for that set up. (I think.. if I remember all the math correctly.)

 

[wilecoyote76]

One kinetic energy calculator shows 90.41 ft/lbs of KE. I'd say that's plenty for anything.....anywhere.. I'm guessing you're shooting a higher poundage bow to get 290 fps with heavier arrows????

 

[AZ402]

Shooting a Mathews Black Max2 @70lbs..........Arrows are Carbon Express terminators 6075's with quick spin fletching and 100gr Shuttle-T lock broadheads. They are flying much tighter than my previous set up. A little slower but much more consistent.

 

[A-con]

90 lbs
Stan, check out this link

http://home.att.net/~sajackson/ke.html

 

[AZ402]

Dan, that is the website I was looking for........Thanks

 

[schmalts]

Man you could kill a water buffalo with tha KE!! i think i remember i was only getting about 68KE on my setup. that black max is a smoking fast bow, i have heard some guys having trouble tuning that beast though.

 

[AZ402]

I've never had much problems with broadheads at all. I actually switched broadheads (shuttle-t locks) after seeing them in action on an archery elk hunt this year. So far they are darts..........

 

[A-con]

Hey Stan, did you have that much K.E. when you shot your big bull ?

 

[AZ402]

Nope, probably in the 60's when I was shooting the Q2.