Slings and Shields
Feb 8, 2022 0:42:49 GMT
Post by joe_meadmaker on Feb 8, 2022 0:42:49 GMT
Thanks man! Glad you enjoyed it.
I put a couple of the speeds in a free fall calculator. It looks like the height for most of the smaller stones was up in the 75 - 80 ft range. The larger ones down around 65 ft. The speeds posted in the video are just calculated estimates based on the number of frames the stone was in the air.
No soreness in the arm at all. I wasn't too concerned about that though. I was slinging stones at plywood boards pretty much all summer long to assess the damage. It gave me a real good idea of how hefty to make the shield.
I'm not sure if the shape of a shield would change it's ability to absorb energy. I think that would fall more to the physical properties of the materials. Although one of the most beneficial things to do with an incoming projectile isn't to stop it and absorb the energy, but rather to deflect it. One big advantage to raising a shield over your head is that this angle for deflection happens automatically. (And to clarify, I'm speaking about a shield set up like mine that has a forearm strap and a handle. A center grip shield would obviously work differently.) With a convex shield the same overall angle would still happen, but the stone's angle of incidence would also change depending on where it hit the shield. I think it would still work well. Just for some impacts the shield's curve would aid the deflection, and others it might not.
I would love to test that. If anyone knows where to get a real heavy duty convex shield, let me know. I could try to make one. Maybe I need to look into how to do that.
I put a couple of the speeds in a free fall calculator. It looks like the height for most of the smaller stones was up in the 75 - 80 ft range. The larger ones down around 65 ft. The speeds posted in the video are just calculated estimates based on the number of frames the stone was in the air.
No soreness in the arm at all. I wasn't too concerned about that though. I was slinging stones at plywood boards pretty much all summer long to assess the damage. It gave me a real good idea of how hefty to make the shield.
I'm not sure if the shape of a shield would change it's ability to absorb energy. I think that would fall more to the physical properties of the materials. Although one of the most beneficial things to do with an incoming projectile isn't to stop it and absorb the energy, but rather to deflect it. One big advantage to raising a shield over your head is that this angle for deflection happens automatically. (And to clarify, I'm speaking about a shield set up like mine that has a forearm strap and a handle. A center grip shield would obviously work differently.) With a convex shield the same overall angle would still happen, but the stone's angle of incidence would also change depending on where it hit the shield. I think it would still work well. Just for some impacts the shield's curve would aid the deflection, and others it might not.
I would love to test that. If anyone knows where to get a real heavy duty convex shield, let me know. I could try to make one. Maybe I need to look into how to do that.
