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My Distance (Read 3872 times)
Ring_Thrower
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My Distance
Dec 1st, 2004 at 4:06pm
 
Hello everyone.

I just found this forum after much google searching. My main interest in slinging, is distance. I was hoping some of you other distance throwers could estimate my potential distance with the correct equipment. Here is what I am currently using: A 36" (91.5cm) long sling, from center of pouch to knot. I throw rounded beach rocks roughly the size of golf balls. I have a laser rangefinder and have measured many throws to land at a distance of 310 yards, (283 meters). What kind of improvement can be expected using a longer sling and lead shots?
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Mike_R
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Re: My Distance
Reply #1 - Dec 1st, 2004 at 7:06pm
 
That's not really a very fair question. If you are asking "Will I throw farther with a longer sling and a more dense and uniform projectile?" Then I would say, yes. How much farther? Dunno. Ussually adding length to your sling will increase distance. Might throw off your technique until you get used to it.

One of the other guys around here will probably have some better advice. Yurek and Knollslinger both seem to have many insights into the long, long toss.

By the way, anyone know what the world record is?
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Tint
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Re: My Distance
Reply #2 - Dec 1st, 2004 at 7:20pm
 
The world record as far as I know is 1565 ft set in 1992.
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Mike_R
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Re: My Distance
Reply #3 - Dec 1st, 2004 at 7:33pm
 
Is that about 500 yards? We mainly do metric here in Canada. Is that with a dart or a bullet? If with a dart then does anyone know the record for a bullet?
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Tint
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Re: My Distance
Reply #4 - Dec 1st, 2004 at 9:04pm
 
I brought the thread "world record" back to the top so you might want to have a closer look.  3 feet = 1 yard.  And 1 yard =0.9144 metre. So the record is about (477 meters.) <I modified this> Wink
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« Last Edit: Dec 2nd, 2004 at 1:04am by Tint »  
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KnollSlinger
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Re: My Distance
Reply #5 - Dec 2nd, 2004 at 12:37am
 
The last time I checked the world record I laughed!
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The Davidson Road KnollSlinger&&Who can beat me?
 
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KnollSlinger
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The Davidson Road KnollSlinger

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Re: My Distance
Reply #6 - Dec 2nd, 2004 at 12:42am
 
Quote:
I brought the thread "world record" back to the top so you might want to have a closer look.  3 feet = 1 yard.  And 1 yard =0.9144 metre. So the record is about 1431 meters.


That is about a  mile.  That is a prett good toss.  Is that all in the air? or are we talking about rolling on a runway?
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KnollSlinger
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Re: My Distance
Reply #7 - Dec 2nd, 2004 at 12:44am
 
Quote:
That's not really a very fair question. If you are asking "Will I throw farther with a longer sling and a more dense and uniform projectile?" Then I would say, yes. How much farther? Dunno. Ussually adding length to your sling will increase distance. Might throw off your technique until you get used to it.

One of the other guys around here will probably have some better advice. Yurek and Knollslinger both seem to have many insights into the long, long toss.

By the way, anyone know what the world record is?


You should determine the best length sling EARLY in your career, so you are not stuck with "short sling" skills.

Find the sling that is too long.  THen find out why it is too long.  THen make it work.  THen make it a little shorter.

Then you will have it.
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Tint
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Re: My Distance
Reply #8 - Dec 2nd, 2004 at 1:03am
 
Sorry,  my mistake.

1565 feet is 522.3 yards which is only 477meters.

I think they mesured from the throwing spot to where the dart landed.
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britishslinger
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slings the handheld arlilery

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Re: My Distance
Reply #9 - Dec 2nd, 2004 at 3:57am
 
i made a longer sling two days ago and with hardly any effort i doubled the distance my new sling is about four-five foot
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listen to old people
 
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Yurek
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Re: My Distance
Reply #10 - Dec 2nd, 2004 at 5:48pm
 
Ring_Thrower,

I think the best way is to give it to try. I'm curious how your sling and technique looks, hope other guys too. Pretty nice ranes!

Larry Bray sent a stone at 434 m, or so. He was the record holder before David Engvall.

Jurek
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In the shape, structure and position of each stone, there is recorded a small piece of history. So, slinging them, we add a bit of our history to them.
 
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Matthias
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Re: My Distance
Reply #11 - Dec 3rd, 2004 at 2:17am
 
Quote:
I just found this forum after much google searching. My main interest in slinging, is distance. I was hoping some of you other distance throwers could estimate my potential distance with the correct equipment. Here is what I am currently using: A 36" (91.5cm) long sling, from center of pouch to knot. I throw rounded beach rocks roughly the size of golf balls. I have a laser rangefinder and have measured many throws to land at a distance of 310 yards, (283 meters). What kind of improvement can be expected using a longer sling and lead shots?


Welcome Ring_Thrower!

I've punched your numbers (nice thorough report btw) and come up with the following based on a few assumptions:
  • Similar shot weight - A granite "golf ball" is 46mm diameter and weighs 134g (2630kg/m^3). We'll take this to be our reference (and it is a good "standard" weight anyways)
  • Same launch velocity. Using the same weight glans, this will probably be from the same sling. You might get more speed out of a longer sling, but technique and strength become factors. 36" is a good length - though many distance specialists use longer, especially true with "engineered" ammo.
  • 45 deg launch. Depending on where your initial speed falls, you can often eke out more range at slightly lower angles as you can get more forward distance in the intial high speed/low drag/turbulent flow regime of the flight.
Working back from your numbers I end up with a launch velocity of 63.5 m/s, which is pretty respectable! (and realistic)

Switching to lead will pick up distance. With 63.5 m/s at 45deg, your estimated range is about 339m, a ~20% boost. Your (pure) lead sphere is around 28mm diameter.

Moving to 2:1 ellipsoid ammo gains you an extra 32m, topping you out at 371m. Dimensions are 22.4x44.9mm

The max range with no air friction is 413m, so you can see that we're getting pretty close. No need to get too fancy with depleted uranium darts etc Wink

Here's a screenshot of my calculator with your rock and the 2:1 lead
(work in progress)

...

And some encouragement for you! Your calculated launch speed is right on the cusp of pulling off some pretty nice gains. As you get faster, it is easier to induce a nice turbulent boundary layer, which dramatically reduces the form drag on the projectile. If you can bump your speed by 16% up to 73.5 (fast) you'll gain 30% with the 2:1 ammo and be pushing 500m.

Matthias
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Yurek
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The best thing, is a good
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Re: My Distance
Reply #12 - Dec 3rd, 2004 at 10:25am
 
Matthias,

Your baby looks pretty super! A nice piece of the good job you have made. I suppose you have made a numerical aproach of the Achenbach's curves, you took the points from the graphs, am I right?

I would love to play with the baby Smiley How much you order for it?

Jurek
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In the shape, structure and position of each stone, there is recorded a small piece of history. So, slinging them, we add a bit of our history to them.
 
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Ring_Thrower
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Re: My Distance
Reply #13 - Dec 3rd, 2004 at 11:49am
 
Mathias,

   Thanks for info! It was exactly what I was hoping to get by posting that message. I have a couple questions. I'm 6'1" with a long reach, what are some longer sling lengths to try? Also with the 2:1 model is that prediction based on the projectile always have correct orientatation, o instead of ()?

I just ordered a balistics chronograph which will tell me exact release velocites. I plan on setting up a proper backdrop and finding out exactly how fast I throw. I will write up the numbers in a week or so.

Thanks again.
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Douglas
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Just give me a good stone
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Re: My Distance
Reply #14 - Dec 3rd, 2004 at 12:01pm
 
Quote:
...Working back from your numbers I end up with a launch velocity of 63.5 m/s, which is pretty respectable! (and realistic)...

Does that work out to about 200fps?
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