Are compound bows equal kinetic energy bows.

moxiecrew said:

You really need to keep the Y axis scale the same, a <1% difference and 7% difference should never be scaled to the same height visually.

This whole write up would give a stats nerd a stroke

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Leviw96 said:

Interesting.
It looks like the pse bows have a more efficient cam compared to the APA
As the don’t gain as much as the arrow weight increases.

Is that correct?

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Vinsanity23 said:

This stuff is always interesting to read and ponder upon. Thanks for putting in the work to put actual data out there!

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enewman said:

It absolutely matters. But it only matters to the people that look at these kinds of things. If you are a person that just builds your arrows, goes, and kills, then you are correct. It doesn't matter, and my papers are not for you. But if you are a person that wants to understand why things work and want to be able to help and teach others, then my papers are just for that.


Now this paper was not about killing. It was about our bows, and they are equal KE bows. No, they are not. I added the down-line data so people would understand why we see an increase in penetration. I could have just left that out and probably should have. But it is data for the people that want to see it.

Some of the things to think about is do we need heavy arrows. No, we don't. We only need to understand what is going on so we can make sure to build the arrow needed to get the job done.
But all of that is for a different post.

Either way, thank you for posting. With out comments, we do not learn or improve.

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enewman said:

Thanks again.

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nickam9 said:

Interesting paper. Thanks for fixing the scaling; it was confusing and misleading at first when I read the initial paper. Always nice to read about a little physics testing in the archery space.

Looks like this also shows that the PSE cams are more efficient than Mathews. Now I'm just waiting for that fight to break loose

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XtremeArcher23 said:

Outside of online forums there are hunters still shooting aluminum arrows. No specific arrow build no overthinking and getting the same results as those who spend hundreds for arrow builds. Maybe add in the human factor of the want for material things. That's really all it is when the end result is the same.

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enewman said:

no one that I know denies this. Not one.

Heck, I killed a lot of animals with a $5 broadhead (zwickey)

But it doesn't change the fact some of us enjoy getting nitty gritty with it. haha

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huntercooper84 said:

I assume the test had all bows at same draw length and draw weight?

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enewman said:

The data from Waterfield was the same.

For the data I provided, I used the omen and the xpedite. I believe the xpedite was around 63 lbs, and the omen was 61 lbs. since we are looking at a difference in KE between two different arrows. It will not matter if anything matches.

The paper is just to show that a bow increases in KE and is not an equal KE. Then it doesn't matter if the bows matched in draw weight or even draw length. I could have just shown one bow. But to show that it increases with different bows is why I did several bows.

Remember, the paper is not to compare each bow to each other. It is just to show bows will increase in KE as we increase arrow mass.

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huntercooper84 said:

That makes sense. I was wondering why the APA would perform lower at a lighter arrow compared to the other bows but perform similar with a heavier arrow. That is why I asked about bow specs. Like you said this wasn’t meant to look at that but did spark my curiosity.

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