Slinging.org Forum - Speed measurements

IronGoober Interfector Viris Spurii Offline ...and now, No. 1, the larch... Posts: 1601 California Gender:	Speed measurements Sep 28^th, 2020 at 11:32pm Move this post if needed to "Here be Maths." https://youtu.be/LHXB931PNcE My best is 106mph with a 160g projectile. I doubt I can do much more. Maybe 1 or 2 mph faster with this sling, as my best yesterday was 104, today 106.
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Sarosh Interfector Viris Spurii Offline Posts: 1140	Re: Speed measurements Reply #1 - Sep 29^th, 2020 at 5:24am I think we have similar output and you might be better. 106mph 160g would be 180m-200m, it puts into perspective those early records, 200g 350m.
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joe_meadmaker Slinging.org Administrator Offline Slinging Ice is Cool! Posts: 2910 PA, USA	Re: Speed measurements Reply #2 - Sep 29^th, 2020 at 9:58am Despite your taunting in the credits, I had to watch until the end. Do you think you could get a higher speed with a rock (or something else with a solid shape) that weighs 160g? I'm curious if the un-solid nature of a rusty ball causes a less efficient transfer of energy.
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IronGoober

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Re: Speed measurements
Reply #3 - Sep 29^th, 2020 at 10:10am

Sarosh wrote on Sep 29^th, 2020 at 5:24am:

I think we have similar output and you might be better. 106mph 160g would be 180m-200m, it puts into perspective those early records, 200g 350m.

Yeah, I totally agree with the last bit, but I think you have me beat on speed, esp. with tennis balls. But yes, Melvin Gaylor or Larry bray's records...How? They must have tendons like steel cable.

joe_meadmaker wrote on Sep 29^th, 2020 at 9:58am:

Despite your taunting in the credits, I had to watch until the end.

Do you think you could get a higher speed with a rock (or something else with a solid shape) that weighs 160g? I'm curious if the un-solid nature of a rusty ball causes a less efficient transfer of energy.

Hehe. I thought about leaving some reloading footage in, to make it go longer, but I like the way I did it in the end.

I wonder about that too. From Sarosh's videos on speed measurement, He did see differences between a tennis ball and a similarly weighted stone. So, yeah, there may be a small amount lost during acceleration due to extra drag from more cross-sectional area. I was using my usual target sling, but I want to try the same with a less "drag-y" sling as well.

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« Last Edit: Oct 11^th, 2020 at 10:40pm by IronGoober »

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Shakli

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Re: Speed measurements
Reply #4 - Oct 11^th, 2020 at 3:33am

Ok so I watched you over and over at 0.25 speed. Take my input here with a grain of salt as I have yet to do this my self but here goes:
The good: You are using your hip and shoulder well to get your power, which is why you are able to throw so fast.
The bad: You are not using your back at all. The truck of your body is moving as one block instead of spiraling though your back. I am guessing that if the order of the throw is hip, stomach, scapula, shoulder, elbow, wrist, you will get the max amount of power from your body.

Again take this with a grain of salt, since I cant actually do what I am talking about. I will be working on it though. Will let you know in 2-3 months if I succeed and if my assumption is correct.

Edit: Thank you so much for this clip it really helps figure out technique.

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IronGoober

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Re: Speed measurements
Reply #5 - Oct 11^th, 2020 at 10:44pm

Shakli wrote on Oct 11^th, 2020 at 3:33am:

Ok so I watched you over and over at 0.25 speed. Take my input here with a grain of salt as I have yet to do this my self but here goes:
The good: You are using your hip and shoulder well to get your power, which is why you are able to throw so fast.
The bad: You are not using your back at all. The truck of your body is moving as one block instead of spiraling though your back. I am guessing that if the order of the throw is hip, stomach, scapula, shoulder, elbow, wrist, you will get the max amount of power from your body.

Again take this with a grain of salt, since I cant actually do what I am talking about. I will be working on it though. Will let you know in 2-3 months if I succeed and if my assumption is correct.

Edit: Thank you so much for this clip it really helps figure out technique.

I think you are right, actually. The kinetic train is most efficient if the hips rotate first, then the shoulders/core. If you watch pitching/javelin throwing, this is always the case with world-class athletes. In pitching it is called shoulder-to-hip separation. I have about 0 of that.

It is probably the case for slinging as well, that it would be most powerful/efficient transfer of muscle power into the sling to do it as you suggest. I just don't know how to reprogram 12 years of my own slinging habits. I wish there were a good way to do it.

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NooneOfConsequence

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Re: Speed measurements
Reply #6 - Oct 12^th, 2020 at 2:36pm

For reference, the fastest baseball pitch without a sling was 105.1 mph with a ~150g baseball.

https://www.guinnessworldrecords.com/world-records/fastest-baseball-pitch-(male)...

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