Tomas wrote on Feb 13
th, 2016 at 6:10am:
I met a guy through work last year who was actually involved in university research of throwing styles and their mechanics. He said that yes, an overhand Style of throw is harder on the elbow not because of the angle when its loaded like you guys have pointed out in the pictures but rather because of the deceleration phase. Once you release, your arm continues into the follow through to slow down. With an overhead Style, the elbow and shoulder muscles(rotator cuff and forarm extensors) engage to stabilise and slow your arm's path. With and underhand throw such as softball(not necessarily the same motion as balearic) the elbow is swung at the hip joint and stabilized by snapping up against you side. So, underhand is the most ergonomic... I even asked him why they only have the pitcher in softball use underhand while everybody else on the field throws overhand. He replied if the pitcher threw overhand they would tire out too quick. Softball pitchers often pitch multiple games in a row and have less injuries than baseball pitchers.Most throwing injuries happen in the deceleration phase cause we are muscularly imbalanced.
In overhand, as in Figure 8 style, the arm is working against gravity to come up and over all the while pulling up a weighty stone against gravity. This fight against gravity occurs with a bent elbow and thus results in greater pressures on the muscles, tendons, and ligaments. This pulling up against gravity to bring the stone up and over the back and down again is where the strain on the elbow and shoulder occur. Simultaneously this also results in decreased speed and a loss of power.
In Balearic form the arm does become bent but at that point the twist of the lower body is doing most of the load bearing work as it comes full circle in a more
horizontal path rather than in a
vertical path against gravity as in Figure 8 style. This is why Balearic shooting style is not only ergonomically most efficient but yields the greatest power most efficiently as a
direct result.
I think this also answers your question Parmenion.
Mark-Harrop wrote on Feb 13
th, 2016 at 7:43am:
We can argue this all day....
The proof lies in distance and speed.
HuntsmanSling,
In your (only) video, you claim 70m at 190kph.
I get about 2 seconds of flight time (I'm rounding down) so thats about 35m/sec....or about 125 kph or 77mph....give or take.
I suggest if anyone wants to prove their point, they make a video.
Talk is cheap... and we all have smartphones and the internet.
Here is a video of Luis Livermore, a Balearic slinging champion with international fame, who also "claims" to be throwing at 190 kph, yet he is using 200-250 gram stones, over a half pound. Simply amazing. He slings at 1:00 minute into the video. Considering that you can only throw 125 kph Mr. Harrop you might want to pay attention.
I have found another video clip of Luis Livermore launching stones out hundreds of meters into the ocean if you need to see that as well.
And my 70 meter throws in my personal video are not my maximum distance with a Balearic sling. Those throws are my maximum distance with THAT particular sling which is only 25ish inches in length. & if I angle up I can get another 20 meters on my throws but I sacrifice power which was the point of the video.
Everyone knows the longer the sling the longer range you have. With a 30 inch Balearic my range increases drastically, up to 180 meters and I drop my stone weight down to about 100 grams.
Mark-Harrop wrote on Feb 13
th, 2016 at 7:43am:
As far as Balearic style in combat and hunting, I don't buy it. When slinging was used in combat, it was a ranged weapon fired in volleys (like arrows) or in hit and run skirmishing. Anyone who has ever been on any kind of battlefield knows that you want to limit your exposure to enemy fire, so standing still twirling a sling around would probably get you an arrow in the chest.
Ever hear of bravery? The Balearic slingers have a rich history of being drafted as skirmishers by both the Iberian Carthaginians and later the Romans. It's documented.
The below Balearic Island documentary & written citations of classical accounts from classical historians, including modern day historical Balearic Island archaeologists, all support my claims regarding the existence of Balearic slingers in
combat AND the Balearic style's ridiculous range/power. They used a short sling for close combat, medium for medium, and a long sling for distance attacks, all using the Balearic form.
Since you once again refuse to do your own research on the Balearics, Mr. Harrop, (why don't you use your smart phone? lol)
Here is a historical account from
123 BC regarding the Roman conquest of the Balearic Islands by the Roman Gerneral named Quintus Caecilius Metellus and their fight against the defending Balearic slingers.
It's a translated documentary supported by Balearic Island archaeologists and credited historians on the subject.
Skip through the beginning of the video. The two key parts are from 7:17-11:41 & from 11:42-12:41 where it describes the Romans failing in their first invasion due to the Balearic slingers raining shots
down on Roman landing craft, killing the men aboard and even sinking the ships themselves before reaching shore. These are shots up to 300+ meters. They used close range shots as well as the invasion fleet got closer to landing which is also documented.
Here is another nice summary of classical historians Strabo and Pliny describing the Balearic slingers as military combatants LONG before any silly 20m competition that you incorrectly believe is the origin of Balearic shooting style Mr. Harrop.
"We know from classical authors that the Balearic Slingers were much admired for their skills in the use of the sling and their bravery (Pliny3, 5, 76) and, according to Strabo (III, 1-2), the Balearic Slinger was the best among all other slingers and far superior to the men from Egio, Patras and Dimo.
One disadvantage that the sling had as a weapon was that the slinger required many years of training and experience, more so even than that of an archer. For this reason, the use of the sling as a weapon was restricted to those ethnic societies that were specialized in its use (i.e. the Balearics, the Rhodes etc.) who, in turn, were hired as mercenaries.
Continuing with the peculiar aspects of slingers, Strabo paints a very clear description of a slinger in battle. He mentions that they went into battle without body armour carrying their goatskin shield in one hand and a fire- hardened javelin in the other, and sometimes they also used a spear with a small metal point."
(Ethan Leuchter)
I hope this sheds some light on the power, range, and speed of the Balearic slingers. I hope it also puts to rest any notion that the Balearic style originated from some 20m shooting spectacle of modern times. At this point, if anyone denies the documented rich history of Balearic slinger's being used in combat then you are simply in denial of the TRUTH.
Mark-Harrop wrote on Feb 13
th, 2016 at 7:43am:
As far as the magnus effect and accuracy, a rifle spin is the way to go. An overhand motion is the best way to achieve this, like with an American football.
I suggest if anyone wants to prove their point, they make a video.
I have proven it with a video and videos of other Balearic slingers who are professionals.
Why don't you show us a video where you aren't slinging a dog toy in a 20 ft apartment... And saying that the spiral on an American football proves that overhand is
better for the Magnus effect, lol! Have you even thrown a football before? it has laces so the hand can deliver the spin on the ball with the follow through, and again, an overhand throw with a football is miles different than a sling with a stone in it. Stop comparing completely different things to try to squeeze some sense into your dis-proven theories regarding figure 8...I'm not denying figure 8 has ballistic spin, just not near that of Balearic slingers.
If you want to see the amount of spin you get with the Balearic form take a tennis ball. Draw a fat black line around the tennis ball. Throw the sucker and you can see the ballistic spin.