Ballista for the Renaissance Fair

Recalculate for chickens

Looks like the chickens weigh in slightly less at 80g.

I’m trying to double check the strength of 2x2s, but I think we’ll be well within the working limits.

There’s such variance in lumber strength I think the best you’ll be able to do is a worst case scenario. It looks like the one in the video used 2x3 or similar

Good point.

I may have to do some calling around for rough sawn lumber as well… It might look a bit more authentic that way.

Here’s an idea for it.

edit: that was the wrong link

Okay, that is definitely a slick trick… Shouldn’t be too hard to come up with a vinegar and metal shavings to age the wood.

I hadn’t really thought about it when I posted that, but a wooden chassis like that would be really cool too! Time? what of it? :rofl:

Perhaps we can do a t-shirt cannon and get rid of those t-shirts sitting at the Welcome Center. I have to Google, but I believe those were in use during the Renaissance Period. I suppose it could be disguised as a traditional Renaissance cannon, which did exist. Maybe a cross-bow look to it to keep it portable?

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Made some exciting progress tonight!

We’ve made a prototype of the torsion box! …and definitely learned a few things.

  1. Paracord can create a crazy amount of force that can easily bend and crack a 2x6
  2. While loading the cord onto a card and then threading the cord in mass through a hole is quick, it does not create an even tension through all of the cords (means the machine would have to be re-tensioned more often)
  3. It helps with threading to make the holes slightly larger than the width of the torsion arms (ie - a 2in hole would be appropriate for a 2x2 arm)
  4. The hallways are not quiet big enough to fire medieval siege engines.
  5. Rubber chickens do scream when launched from a ballista

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Attached to hear the death knell of a rubber chicken (headphones recommended)

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… i envision a balista covered in copper scales and a fearsome dragon mouth belching out bolts… and chickens…

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Well… We do know some digital artisans and have some pretty nice 3d printers laying around…

Great… now all I can think of is chickens in armor.

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Btw, the prototype does a pretty good job of lobbing chickens outdoors…

So maybe we should see if we can come up with some armor for them. Lol

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Chicken flingin’ good!

36 gauge aluminum sheet with a copper finish. Possibly use the laser or a Brother Scan and Cut to cut scales fully or partially out of the sheet. I have a roll if you’re interested.

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