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Arrow Speed and Kinetic Energy

 
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  #8  
Old 01-24-2012, 12:27 AM
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Re: Arrow Speed and Kinetic Energy

This is the rest of the Ashby reports:

webpages

There used to be alot more, but they took some down; some with raw feild data.
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  #9  
Old 04-19-2012, 12:57 PM
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Re: Arrow Speed and Kinetic Energy

Hi, I'm new to the forum and was browsing the topics when this one caught my eye. Great Article and very well done. I shot a bow since 1956 and also had an archery shop in the 70's. I have killed many deer with recurves and compound bows and a large black bear in Canada. When I had the Archery shop this discussion came up many times. I don't see why the modern archer is so all consumed with speed when most of them carry rangefinders anyway. As far as "jumping the string" goes, a quiet bow shot with a heavier arrow will help with that. I used 32 inch 2219 arrows with my Bear Alaskan with a 145gr broadhead and if I remember correctly they weighed about 900 grains so I consider 600 about minimum. I also used the same arrow in my recurve. If you limit your shots to 30 yds and under for whitetails you will be fine with those 300gr arrows as long as you don't hit bone, but if you make a bad shot and hit the shoulder blade of a doe like I did, that heavy bow and heavy arrow will do the job I still have the shoulder blade with the 4 blade hole in it. The bows made now are much more efficient and will handle a moderately heavy arrow better. If you shoot game at a distance of 40 to 80 yrds the heavier arrow is the only choice.
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  #10  
Old 04-23-2012, 10:23 PM
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Location: Prineville Oregon
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Re: Arrow Speed and Kinetic Energy

Quote:
Originally Posted by rander3141 View Post
Hi, I'm new to the forum and was browsing the topics when this one caught my eye. Great Article and very well done. I shot a bow since 1956 and also had an archery shop in the 70's. I have killed many deer with recurves and compound bows and a large black bear in Canada. When I had the Archery shop this discussion came up many times. I don't see why the modern archer is so all consumed with speed when most of them carry rangefinders anyway. As far as "jumping the string" goes, a quiet bow shot with a heavier arrow will help with that. I used 32 inch 2219 arrows with my Bear Alaskan with a 145gr broadhead and if I remember correctly they weighed about 900 grains so I consider 600 about minimum. I also used the same arrow in my recurve. If you limit your shots to 30 yds and under for whitetails you will be fine with those 300gr arrows as long as you don't hit bone, but if you make a bad shot and hit the shoulder blade of a doe like I did, that heavy bow and heavy arrow will do the job I still have the shoulder blade with the 4 blade hole in it. The bows made now are much more efficient and will handle a moderately heavy arrow better. If you shoot game at a distance of 40 to 80 yrds the heavier arrow is the only choice.

I agree very much with what you have to say. I haven't owned an Archery
Shop, but, I have several close friends who do. I have found the advent of
fiberglass and then aluminum shafts. culminating with Carbon shafts has
changed the general structure of Archery. That's only some of the changes in the arrow. What about knocks, vanes and broadheads?

Consider the Bow sight and the magnificent strides the inventors have achieved.

The finger release has to be practiced and practiced to achieve
a release of the string any where near close to that of the mechanical release.

Finally the bow itself. There are very few Boyer's who can turn out quality
self bows, mainly due to the lack of material. Even the the laminated recurve
bows are a far cry form where they started.

Great strides have been made with the compound bow. Can you imagine trying to compete in an archery tournament using an old four wheeler with 35% letoff against the modern compound with up to 85% letoff?

The thing is that each of the styles of Archery has a place. whether or not we accept that, is up to the individual. The same arguments rage in the rifle community and their choices are up to the individual as well.
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  #11  
Old 04-27-2012, 06:42 PM
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surprized thanks

I think that's right!
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  #12  
Old 04-27-2012, 08:46 PM
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Join Date: Nov 2011
Location: Prineville Oregon
Posts: 397
Re: Arrow Speed and Kinetic Energy

Supprized

I have been pulling a bow since the mid fiftys. I was 27 years old when I
began shooting the bow. I was taught to shoot a rifle at age 7.

Always know your target and what is behind and Practice, Practice, Practice.
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  #13  
Old 05-08-2012, 05:20 PM
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Location: Prineville Oregon
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Re: nothing else

Quote:
Originally Posted by NewNolva View Post
I think that's right!
I notice that you are in Guam. Welcome!

It would help to know what your interests are.

Are you stationed in Guam or are you a citizen of Guam?
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  #14  
Old 05-10-2012, 05:22 PM
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Join Date: May 2011
Location: Colorado
Posts: 626
Re: Arrow Speed and Kinetic Energy

If we are talking only about what happens when the arrow strikes an animal, then momentum is king. Arrows kill by penetrating a broadhead. no penetration, no kill. period. Kinetic Energy is much more at home with today's well constructed rifle bullets. It was in days past, with inferior cup/core lead bullets, where large bores and heavy bullets (high momentum) killed more animals. High KE bullets produces larger shock waves to be transmitted through the chest cavity, a very different internal phenomenon than an arrow/broadhead.

Also think about the construction of the Arrow. carbon fiber is fantastic at absorbing energy. Think carbon fiber bicycles, they are both light and dampen the shock from the road. The internal damping (energy absorption) of carbon fiber is higher than just about any material. Although carbon fiber arrows are hard to break, are they really what you want at the moment the arrows strikes the animal you've been stalking for a week? I know lots of archery hunters who are switching back to hunting with aluminum arrows because they have had bad experiences with light/fast carbon arrows not penetrating.

However, there is more to it than just penetration. Flat trajectory from higher velocity has a lot of merit. And as mentioned in a previous post, the correctly matched spine for your bow is going to be the best all around combination. As with everything the best place to be is a good happy medium with all factors.
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