KE?

buckeyehntr5 · 03-27-2008, 08:22 AM

I'm sure this has been brought up once for twice so forgive me for forgetting, but how do you come up with kenetic energy?

Also, what are some of the numbers you guys are putting out there?

Thanks
Chris

kickin_buck · 03-27-2008, 08:33 AM

ke=M * v2 / 450,240

M=Mass of arrow in grains
V=Velocity of arrow

My target arrow is 349 grains, shooting 282fps I am just a touch over 61 foot pounds.

My hunting arrow is 431 grains, shooting 292fps, I am just a touch over 83 foot pounds.

mobow · 03-27-2008, 08:37 AM

And in simpler terms...

speed x speed x weight/ 450240

I'm tossing a 440 grain 2613 296 fps, producing almost 85 foot pounds of KE. Yeah, it hits hard.

My hunting arrow will be a 2512, weighing around 475 grains, in the upper 280's. Let's just figure it @ 285. Nearly 86 foot pounds of KE.

Matt/TN · 03-27-2008, 08:39 AM

I'm spitting out around 60-61ft lbs. I didn't really beef up my arrow at all this year. I see no need for where I hunt.

mobow · 03-27-2008, 08:56 AM

Quote:

ORIGINAL: kickin_buck

ke=M * v2 / 450,240

M=Mass of arrow in grains
V=Velocity of arrow

My target arrow is 349 grains, shooting 282fps I am just a touch over 61 foot pounds.

My hunting arrow is 431 grains, shooting 292fps, I am just a touch over 83 foot pounds.

There must be a typo here somewhere, your lighter arrow is slower??

kickin_buck · 03-27-2008, 09:00 AM

I shoot my target arrow at a lighter draw. ASA limits me to 280fps, so I have to crank my draw way down to get down to that speed. The arrow is the Goldtip Ultralight Pro. I have to say, it is really nice when shooting those summer shoots when it is 100 degrees outside and not having to pull 70lbs.

mobow · 03-27-2008, 09:25 AM

Ahhhhhhhhh...yeah, didn't think of that. Took for granted it was the same DW. My bad, mobow's bad. [&o]

buckeyehntr5 · 03-27-2008, 09:42 AM

Thanks fellas, last night I got some new 2" Quick spins on my arrows and I had a total weight of 437gr. Also, my new sight came in and got it put on. It's a Sword Apex hunter. This sight is pretty sweetttt! I was so excited to get home anddial it in that I forgot to shoot a couple arrows through the chrono while I was at the shop to see what my speed was.

Spring turkey... Bring it ON!
Thanks again fellas!
Chris