Awesome! Arrowspeed is probably directly related to the area under those f/d curves, aka energy. I wonder why Phoenix starts stacking at the end of the draw. Doesn't seem like normal longbow behavior. But it's not a normal longbow, so...
That would have helped with the visual for sure. I measured it in my previous video about how can two similar bows perform so differently if you want to check it out there.
That sounds more correct for this application for sure. With my engineering background, that is what I learned to call them first but I like force vs draw for bows. Thanks Aaron
Very interesting point. I have never used E=Mc^2 for arrows but I have used F=1/2MV^2 and Momentum=M*V. If we use the F=1/2*M*V^2 for the bows in the video we can calculate the force that each bow has on the arrow. For the Ash bow, F= 1/2*(450-grain arrow)*(155FPS) = 7.32 lb force. For the Yew bow, F=1/2*(450-grain arrow)*(144FPS) = 6.32 lb force. So even though the draw weight is higher on the yew bow, the deflex of the bow is making the yew bow shoot slower and therefore have less force transfer to the arrow. Since the arrows are the same weight, the ash bow shoots the arrow with a higher momentum than the yew bow and that would affect penetration. I guess this means that mass affects the Force the arrow applies and velocity affects it more. But if we are to look at momentum = mass*velocity, then the mass and velocity both affect the momentum equally. There are other videos talking about this more in depth but I just wanted to show that the design of a bow or the bows natural character can affect the performance and show that hight weight doesn't necessarily mean speed.
@@BowtellBows To be honest it struck me last week that to figure out the best punch was to just use e=mc2. That allows me to stop worrying so much about the rest of it.
@@BowtellBows excellent video buddy! Great demonstration and one way to see it at least from my simple perspective while doing these test is that when using the same weight arrow it does not care what the bow poundage is shooting it. The bow that moves it fastest from point A to point B is going to do the most damage. In my hunting experience this is always the case. Keep it up brother 👊
![งมหอย จับปลา มือเปล่า หาอยู่หากินแบบวีถีอีสานกับแก๊งเซียนหรั่ง ม่วนคัก! [ขอนแก่น] @Sianstudio](http://i.ytimg.com/vi/JEJZg6N-AbU/mqdefault.jpg)
Loved the graph! Super helpful to express what you were talking about.
That's what engineers do best. Talk about data and make fancy graphs about data.
Nice work! Hope to see more of this comparison videos with your next bows.
Thank you! That is the plan. Anything particular you would like to have compared?
Awesome! Arrowspeed is probably directly related to the area under those f/d curves, aka energy.
I wonder why Phoenix starts stacking at the end of the draw. Doesn't seem like normal longbow behavior. But it's not a normal longbow, so...
I agree. It is a little weird and I want to research it further.
I was waiting to see both bows unstrung at the end for a visual indication of the set/deflex/reflex that is causing the different curves.
That would have helped with the visual for sure. I measured it in my previous video about how can two similar bows perform so differently if you want to check it out there.
I have always heard it called a force DRAW curve.
That sounds more correct for this application for sure. With my engineering background, that is what I learned to call them first but I like force vs draw for bows. Thanks Aaron
I’ve heard it the same as Aaron but I can see why you went with displacement
Yes but when doing the simple ole e=mc2 one sees why a fast light weight bow still can not penetrate with the same force of a slower heavier bow.
Very interesting point. I have never used E=Mc^2 for arrows but I have used F=1/2MV^2 and Momentum=M*V. If we use the F=1/2*M*V^2 for the bows in the video we can calculate the force that each bow has on the arrow. For the Ash bow, F= 1/2*(450-grain arrow)*(155FPS) = 7.32 lb force. For the Yew bow, F=1/2*(450-grain arrow)*(144FPS) = 6.32 lb force. So even though the draw weight is higher on the yew bow, the deflex of the bow is making the yew bow shoot slower and therefore have less force transfer to the arrow. Since the arrows are the same weight, the ash bow shoots the arrow with a higher momentum than the yew bow and that would affect penetration.
I guess this means that mass affects the Force the arrow applies and velocity affects it more. But if we are to look at momentum = mass*velocity, then the mass and velocity both affect the momentum equally.
There are other videos talking about this more in depth but I just wanted to show that the design of a bow or the bows natural character can affect the performance and show that hight weight doesn't necessarily mean speed.
@@BowtellBows To be honest it struck me last week that to figure out the best punch was to just use e=mc2. That allows me to stop worrying so much about the rest of it.
I will have to try it out. Thanks for the advice!
@@BowtellBows excellent video buddy! Great demonstration and one way to see it at least from my simple perspective while doing these test is that when using the same weight arrow it does not care what the bow poundage is shooting it. The bow that moves it fastest from point A to point B is going to do the most damage. In my hunting experience this is always the case. Keep it up brother 👊