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Amentum atlatl (Read 2268 times)
AncientCraftwork
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Amentum atlatl
Apr 4th, 2021 at 8:46am
 
The first time I have seen this, it combines the amentum and atlatl
https://youtu.be/IgkW8qADmCY

https://youtu.be/-8l0KzWpwlA
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Morphy
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Re: Amentum atlatl
Reply #1 - Apr 4th, 2021 at 9:54am
 
It would be interesting to know if it gives any benefit.
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Kick
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Re: Amentum atlatl
Reply #2 - Apr 4th, 2021 at 10:25am
 
That's so simple but completely genius. The atlatl increases the length of your arm, the amentum increases the length of your arm - why not stick one on the other! Cheesy
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You are a great guy Kick but also slightly scary at times. - Morphy
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Sarosh
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Re: Amentum atlatl
Reply #3 - Apr 4th, 2021 at 5:57pm
 
Awesome!

@
Morphy video description: Quote:
Ranged Atlatl Shooting: prehistoric atlatl compared to amentum atlatl.
The prehistoric atlatl throw the dart 100 m, the amentum atlatl 124 m.
All the tests give a difference between 15 and 30 m to the advantage of the amentum atlatl, which we find drawn in the Codex Atlanticus by Leonardo da Vinci who represented weapons of his time.

pretty good

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Archaic Arms
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Re: Amentum atlatl
Reply #4 - Apr 4th, 2021 at 10:52pm
 
Very interesting! never heard of that before either. Apparently the furthest throw with a primitive made atlatl is ~250y, so I think 300y would be possible with this amentum-atlatl. That would put it up there with longbows.https://www.tapatalk.com/groups/paleoplanet69529/a-staggering-atlatl-world-recor...

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Morphy
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Re: Amentum atlatl
Reply #5 - Apr 5th, 2021 at 12:14am
 
Sarosh wrote on Apr 4th, 2021 at 5:57pm:
Awesome!

@
Morphy video description: Quote:
Ranged Atlatl Shooting: prehistoric atlatl compared to amentum atlatl.
The prehistoric atlatl throw the dart 100 m, the amentum atlatl 124 m.
All the tests give a difference between 15 and 30 m to the advantage of the amentum atlatl, which we find drawn in the Codex Atlanticus by Leonardo da Vinci who represented weapons of his time.

pretty good



True but you would be surprised how inaccurate such tests are. Even with bows you can get really inaccurate results by such self tests.
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AncientCraftwork
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Re: Amentum atlatl
Reply #6 - Apr 6th, 2021 at 8:21am
 
Speaking of spear throwers, this was a very good video to watch
https://youtu.be/WhWWgF0glQ4
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Kick
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Re: Amentum atlatl
Reply #7 - Apr 6th, 2021 at 12:55pm
 
That's a really great video. It's amazing the distances they can get.
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You are a great guy Kick but also slightly scary at times. - Morphy
"Nothing matters, but it’s perhaps more comfortable to keep calm and not interfere with other people." - H.P. Lovecraft, in a letter to Frank Belknap Long, 7 October, 1923
 
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Sarosh
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Re: Amentum atlatl
Reply #8 - Apr 6th, 2021 at 5:17pm
 
what is the length limit of an atlatl?
can someone double every dimension and be functional?

e.g. doubling every dimension in a bow would make it a bow suitable for gastraphetes or catapult weapon unusable by 1 man.
doubling a sling of medium length can still be usable by 1 man.
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Morphy
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Re: Amentum atlatl
Reply #9 - Apr 7th, 2021 at 9:08am
 
There shouldnt be any reason you couldnt double everything. The only problem might come from a skewed proportion of arm length to atlatl length but I dont know enough about these things to know if that would create an issue. You could also only double the atlatl and simply change the spine of the dart itself. I would think that would work as well.
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Archaic Arms
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Re: Amentum atlatl
Reply #10 - Apr 7th, 2021 at 12:01pm
 
https://www.youtube.com/watch?v=2EqpPMcThcE
From what I've read, record breaking throws seem to be done with atlatls around 3ft long. If the darts were the same length as the atlatl and used steel points for balance, that could be one way to increase range.
Upon reflecting on the video, I think the reason the amentum-atlatl had more range is because it effectively made the atlatl longer than the normal atlatl he used first. If he used a normal atlatl that was the same length, then the normal atlatl would probably perform the same or better.
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Sarosh
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Re: Amentum atlatl
Reply #11 - Apr 7th, 2021 at 12:21pm
 
Archaic Arms wrote on Apr 7th, 2021 at 12:01pm:
If he used a normal atlatl that was the same length, then the normal atlatl would probably perform the same or better.


but then again he can add an amentum and get even longer range (?)
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IronGoober
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Re: Amentum atlatl
Reply #12 - Apr 7th, 2021 at 2:12pm
 
I think it has to do with stroke length. The amentum adds stroke length.  For a given atlatl length, there is only so much acceleration you can do. Once the atlatl is vertical, it can't effectively accelerate the dart because the hook comes out of the back of the dart. But with the amentum, the atlatl can go beyond vertical and still be accelerating the dart.  So maybe a long atlatl + amentum would work better than just a long atlatl.  The question is, for an atlatl of say, 1 m, would a atlatl+amentum of 1m work better. That would be the best comparison I think.
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Re: Amentum atlatl
Reply #13 - Apr 7th, 2021 at 2:49pm
 
IronGoober wrote on Apr 7th, 2021 at 2:12pm:
The question is, for an atlatl of say, 1 m, would a atlatl+amentum of 1m work better. That would be the best comparison I think.

Yes that is what I'm wondering. If the amentum does actually give it a longer power-stroke (more than 45 degrees), then that potentially opens doors for sidearm and underhand throws (like Jai Alai throws) for much more power. I've tried to increase the power-stroke of the atlatl by raising the notch at the back by several inches (so the dart angles downward), but this design may perform better.
The stick I used for testing just happens to fly as straight as an arrow without any fletching, like a giant Yorkshire arrow.
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« Last Edit: Apr 7th, 2021 at 5:09pm by Archaic Arms »  

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Sarosh
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Re: Amentum atlatl
Reply #14 - Apr 7th, 2021 at 4:23pm
 
IronGoober wrote on Apr 7th, 2021 at 2:12pm:
The question is, for an atlatl of say, 1 m, would a atlatl+amentum of 1m work better.


that would depend on the ratio of atl atl and amentum.
I think there will be a ratio that gives longer range for the same sum of length because of the added degrees of acceleration/ power stroke the amentum provides(similar radius, more degrees=>bigger length of arc), the extra power stroke and the gains might be very slight though.


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