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Making a Roman Ballista Model

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Liang Jieming View Drop Down
Knight
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  Quote Liang Jieming Quote  Post ReplyReply Direct Link To This Post Topic: Making a Roman Ballista Model
    Posted: 30-Mar-2005 at 06:15
I can't find good info on the trigger mechanism for the ballista. From what I understand, the Chelonium or slider is fired forward by lifting the whole chelonium off the ratchets, allowing the bow to spring forward. How is this Chelonium raised?

I've managed to work out the rest of the mechanism and have sketched out the major components. Also got all the wood pieces ready to start cutting now. Only this trigger stumps me.

Any help?

Jieming
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Liang Jieming View Drop Down
Knight
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  Quote Liang Jieming Quote  Post ReplyReply Direct Link To This Post Posted: 02-Apr-2005 at 13:31
Ok, here's how my ballista is looking as of 2:27am 3rd April 2005 (+8 GMT)


I have yet to figure out how to make the winch/trigger for the ballista.

Jieming
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Liang Jieming View Drop Down
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  Quote Liang Jieming Quote  Post ReplyReply Direct Link To This Post Posted: 06-Apr-2005 at 22:54
It's done.



Jieming
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Edited by Liang Jieming
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Imperator Invictus View Drop Down
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  Quote Imperator Invictus Quote  Post ReplyReply Direct Link To This Post Posted: 07-Apr-2005 at 15:10
That's pretty good. Looks better than the one I made a few years back.
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Cyrus Shahmiri View Drop Down
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  Quote Cyrus Shahmiri Quote  Post ReplyReply Direct Link To This Post Posted: 07-Apr-2005 at 15:31
What was the maximum range of a Roman ballista?
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Liang Jieming View Drop Down
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  Quote Liang Jieming Quote  Post ReplyReply Direct Link To This Post Posted: 07-Apr-2005 at 23:27
This is it with the bowstring drawn back and the last two diagonal bracings attached.


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Imperator Invictus View Drop Down
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  Quote Imperator Invictus Quote  Post ReplyReply Direct Link To This Post Posted: 08-Apr-2005 at 14:56
Very nice!

Originally posted by Cyrus Shahmiri

What was the maximum range of a Roman ballista?


The average sized ballista (more accurately called as catapulta) could probably shoot about half a km. But it really depends on how big you build it, and how big/strong the bundle of ropes are.


lrgballistacrew.jpg (104795 bytes)
Is a bigger variant

balxxivfired.jpg (39052 bytes)
Is a smaller version

Smaller versions of the catapulta were also called "scorpions". The big type threw either stones or arrows. By the late empire, the catapultas that threw arrows became designated as "ballista"

BTW, I just noticed that at this site where the pics come from, there's a close up of the trigger, but I guess you've already made it. http://www.legionxxiv.org/ballistacatapulta/



Edited by Imperator Invictus
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Liang Jieming View Drop Down
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  Quote Liang Jieming Quote  Post ReplyReply Direct Link To This Post Posted: 09-Apr-2005 at 13:55
Thanks!  I sure had fun making it.

The picture of the large Ballista, isn't that Kurt Suleski's ballista?  He's been really helpful giving me pointers when I was building mine. 

Jieming
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snowybeagle View Drop Down
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  Quote snowybeagle Quote  Post ReplyReply Direct Link To This Post Posted: 12-Apr-2005 at 23:07

Hmmm, would you have recommended ballistas to be mounted on tripods?

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