Re: pic: "You should never go against a robotics kid"
 

my school security guards flipped out when we were test firing our robotic t-shirt cannon because they thought it was a weapon so we arent aloud to make stuff like that anymore lol. great job by the way... i sure wish i had one;)

Re: pic: "You should never go against a robotics kid"
 

Lol, that's why you should usually let school admin know what you're up to with stuff like that :p

Re: pic: "You should never go against a robotics kid"
 

Our school actually asked us to build a t-shirt cannon for rallies, and they actually reimbursed us on the cost of the parts, so that was pretty cool.

Re: pic: "You should never go against a robotics kid"
 

RE: What it's called?

First of all, I call it "cool"! :)

Trebuchets were the ultimate development of the stationary flinging-arm military weapon, but by the 14th century they were being overtaken by early cannon. Since no one alive now speaks a 14th century dialect, we are unlikely to be using the proper name in 21st century English, especially since I doubt medieval siege engines used in probably dozens of different kingdoms, duchies, and counties were all called the same thing. I believe were are applying our modern passion for rigid definitions to devices created in a time where no such cladistic hegemony existed.

Re: pic: "You should never go against a robotics kid"
 

Not entirely sure but i believe the term was changed during the Mongolian rule of Central Asia... or at least the Khan or Seljuk Turks created a different type and changed the terms..:confused:

Re: pic: "You should never go against a robotics kid"
 

doesn't a trebuchet have a mass one one side of its arm instead of surgical tubing?

Re: pic: "You should never go against a robotics kid"
 

Well, what people have been saying is that a trebuchet uses a weight and not a spring, so it sholud be called a catapult, but a catapult doesn't have a sling, so it should be a trebuchet.

let's just call it a "Catachet"

And the video should come soon, Bannanakin is (attempting to) upload it to Youtube.

Re: pic: "You should never go against a robotics kid"
 

I really hope that that CAD was not made in Inventor provided for FIRST....
(That may violate the EULA! Oh Noes!)
Sweet "Catachet" though!
Maybe our team should make an pneumatic catapult...

Re: pic: "You should never go against a robotics kid"
 

I don't believe that would violate the EULA for the FIRST provided inventor. I haven't used it in a few years, but IIRC it's simply the educational version which means that the only restriction is that you are not allowed to use it for any commercial products (ie anything you would be making money off of). This is clearly a non-commercial product.

Re: pic: "You should never go against a robotics kid"
 

The CAD was made using a student edition of SolidWorks.

Re: pic: "You should never go against a robotics kid"
 

The video has been uploaded to YouTube!

http://www.youtube.com/watch?v=p0vZhZob9lk

We will probably take some better videos (ones where you can actually see the ball) over winter break. Also, we'll try to take some at 240 fps (the max my camera can handle, though I think we need a higher frame rate) and slow it down.

Re: pic: "You should never go against a robotics kid"
 

Based on the testing data, you logically now need to put an infinite number of loops of tubing on it.

Re: pic: "You should never go against a robotics kid"
 

building on that, you may want to replace at least some of the wood with metal for durability reasons. (eventually, the wood or the metal will fail)

Re: pic: "You should never go against a robotics kid"
 

call discovery channel and get the guys at time warp

Re: pic: "You should never go against a robotics kid"
 

seconded