Main Discussion Area > Bows
does a bow with a shelf perform better
bassman211:
I shoot winter league with guys that swear their bows are shooting a dead straight arrow until I strip a feather, and let them shoot a bare shaft. Most are glass bows with shelves, and not center cut .The archers are seasoned with good form. In a few cases their bare shaft was close to tune, but in most cases not so much. Then we would make the necessary adjustments to get them tuned properly. I am not a flight shooter like Arvin,or Badger, but I gage a well tuned bow for hunting by bare shafting. If it is done properly a feathered field point ,and broad head will impact in the same place as the bare shaft with peak energy. High foc came about as a norm when guys started shooting light carbon arrows,and needed more hunting weight. The easiest way to do that was add more point weight. Not really necessary when hunting thin skinned animals, or are single bevel broad heads.. That has been proven for decades for guys who shot heavy wood arrows with lighter broad heads.
Selfbowman:
--- Quote from: bassman211 on November 18, 2022, 02:59:06 pm ---I shoot winter league with guys that swear their bows are shooting a dead straight arrow until I strip a feather, and let them shoot a bare shaft. Most are glass bows with shelves, and not center cut .The archers are seasoned with good form. In a few cases their bare shaft was close to tune, but in most cases not so much. Then we would make the necessary adjustments to get them tuned properly. I am not a flight shooter like Arvin,or Badger, but I gage a well tuned bow for hunting by bare shafting. If it is done properly a feathered field point ,and broad head will impact in the same place as the bare shaft with peak energy. High foc came about as a norm when guys started shooting light carbon arrows,and needed more hunting weight. The easiest way to do that was add more point weight. Not really necessary when hunting thin skinned animals, or are single bevel broad heads.. That has been proven for decades for guys who shot heavy wood arrows with lighter broad heads.
True!
--- End quote ---
bradsmith2010:
im sure there are those that are learning and reading that are not posting,, and that is so great,, discussions like this I think are so helpful,, and contribute to better understanding of archery, which is really cool,,even old guys like me are still learning,,, :)
Tommy D:
--- Quote from: Selfbowman on November 18, 2022, 02:19:37 pm ---Just use a heavier arrow for more penetration. Bear, Pearson and a host of other bowyers cut the bows more center shot for a reason and the glass had nothing to do with it. Arvin
--- End quote ---
Not to be argumentative on this one but, it would be hard to argue that anyone has done more comprehensive studies on arrow penetration than Dr Ed Ashby - who has put a single minded life’s dedication to this subject and has thousands and thousands of pieces of data to back it up.
For what it’s worth he categorises arrow weight and forward of center arrow weight as 2 different penetration enhancing factors. So for a given arrow weight, and all else being equal, the more forward of center arrow penetrates better.
Here is a link to these factors and a discussion on them…
https://www.ashbybowhunting.org/12-arrow-penetration-factors
--- Quote from: Allyn T on November 18, 2022, 02:12:26 pm ---Would shooting a stiffer spine arrow but adding extra weight up front to change the dynamic spine recover from paradox faster compared to a lighter spine that flexes the same amount?
--- End quote ---
Yes this is true … but when trying to push FOC up very very high, there comes a point were the arrow is simply not stiff enough and making a bow less center shot becomes an advantage.
Ashby also discusses somewhere that one of the problems with trying to get a high foc arrow to fly well out of a compound bow that is truly center shot and with a drop away rest is that you are not “telling the arrow” which way to flex … and so actually it can cause inconsistency and become hard to tune if it is too center shot.
Ashby discusses all the logic and how to tune a bow for FOC here … https://m.youtube.com/watch?v=7rP8Xantd3Q …. and he covers this in particular for compound bows and the evolution of center shot in minute 35 onwards…
For what it’s worth, I have always enjoyed listening to the man, his experiences and his knowledge
PaSteve:
Great topic. Tommy D, I totally agree about Ashby and high FOC for penetration on game. Out of some of my FG bows I shoot carbon arrows with up to 36%FOC and love the enhanced penetration factors. With that said what Arvin and others are referring to is flight archery.... Two totally different forms of archery.
I guess what I'm trying to say is what works for one application probably isn't the best choice for a different application. If I want to learn about performance enhanced arrows for hunting I'll refer to thre Ashby studies....if I'm learning about flight shooting and bow performance I'll refer to Arvin & Badger. JMO
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version