Junkyard Challenge B

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Re: Junkyard Challenge B

Postby --[Grand]-- » February 28th, 2011, 8:33 pm

How far have you guys been able to launch with catapault / bouncer?

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Re: Junkyard Challenge B

Postby mtheleman » March 2nd, 2011, 12:08 pm

We are having more success with the catapult. We are looking at 8 plus meters. We tried a fixed platform for bouncer, but the device gives too much when impacted by the ball. Has anyone tried a spring loaded platform that would throw the ball? (For bouncer.)
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Re: Junkyard Challenge B

Postby The Architect » March 2nd, 2011, 1:17 pm

mtheleman wrote:We are having more success with the catapult. We are looking at 8 plus meters. We tried a fixed platform for bouncer, but the device gives too much when impacted by the ball. Has anyone tried a spring loaded platform that would throw the ball? (For bouncer.)

What Exactly Do You Mean? How Would One Create A Spring Using Styrofoam And Such Materials?
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Re: Junkyard Challenge B

Postby mtheleman » March 3rd, 2011, 5:41 am

The Architect wrote:
mtheleman wrote:We are having more success with the catapult. We are looking at 8 plus meters. We tried a fixed platform for bouncer, but the device gives too much when impacted by the ball. Has anyone tried a spring loaded platform that would throw the ball? (For bouncer.)

What Exactly Do You Mean? How Would One Create A Spring Using Styrofoam And Such Materials?


Imagine a 2' cube made out of straws or craft sticks. The top has a platform made out of a similar material. The top has a hinge on one side that is made out of rubber bands. They are adjusted so the top wants to remain vertical. To make it lay on top of the cube it becomes "spring loaded." You have some type of trigger that goes off on impact of the ball hitting the top.
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Re: Junkyard Challenge B

Postby rkoopma2 » March 3rd, 2011, 11:30 am

Is there anybody who is still working on the bridge/cantilever/tower? My regional is not for 2 more weeks. I placed 12th at invitationals because I did not have a "free standing" cup. this appartently does not just mean that the cup can't be taped down, it can't be leaning against anything either. otherwise, I would have placed second
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Re: Junkyard Challenge B

Postby mtheleman » March 3rd, 2011, 12:22 pm

rkoopma2 wrote:Is there anybody who is still working on the bridge/cantilever/tower? My regional is not for 2 more weeks. I placed 12th at invitationals because I did not have a "free standing" cup. this appartently does not just mean that the cup can't be taped down, it can't be leaning against anything either. otherwise, I would have placed second

You should be able to tape a cup down. Then have a second cup that you place inside the taped down cup.
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Re: Junkyard Challenge B

Postby Littleboy » March 3rd, 2011, 1:14 pm

No it has to be freestanding it can't be taped or touching anything except for the bottom. See this clarification

wrote:"A FREE STANDING CUP..MUST BE USED TO HOLD THE BALL" OBVIOUSLY THE CUP CANNOT BE SECURED (WITH TAPE,ETC) BUT CAN THE TOP SURFACE OF THE STRUCTURE HAVE AN EDGE, WALL, OR OTHER SURFACE THAT COULD HELP KEEP THE CUP FROM FALLING OFF OR OVER?

No. The structure may not have an edge, wall, or other surface that could help keep the cup from falling off or tipping over. According to rule 4.b. the cup must be free-standing on the structure. Throughout the testing, if the cup leans against anything other than the flat surface of the structure, then it will be supported by what it is leaning against and not be free-standing.


Also how well are your structures everyone escpecially rkoopma2

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Re: Junkyard Challenge B

Postby mnstrviola » March 4th, 2011, 3:23 pm

so, the bottom surface where our cup is is the only thing the cup and ball can be supported by. can the bottom surface be anything from the materials?

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Re: Junkyard Challenge B

Postby zapofdoom34 » March 4th, 2011, 9:17 pm

mnstrviola wrote:so, the bottom surface where our cup is is the only thing the cup and ball can be supported by. can the bottom surface be anything from the materials?


The bottom surface, I think, can be anything except for the tape, because you can't tape it down. But it can probably be supported by the other cups, bowls, plates, etc.

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Re: Junkyard Challenge B

Postby mnstrviola » March 5th, 2011, 6:55 pm

zapofdoom34 wrote:
mnstrviola wrote:so, the bottom surface where our cup is is the only thing the cup and ball can be supported by. can the bottom surface be anything from the materials?


The bottom surface, I think, can be anything except for the tape, because you can't tape it down. But it can probably be supported by the other cups, bowls, plates, etc.


dang it. then again, i didn't expect it to be allowed. Thanks

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Re: Junkyard Challenge B

Postby A Person » March 6th, 2011, 12:10 pm

I have a question that I need to be answered ASAP, are tape dispensers allowed? This is like packing tape dispensers, office dispensers, ect.
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Re: Junkyard Challenge B

Postby Littleboy » March 6th, 2011, 12:14 pm

I would say no. But you could submit a clarification.

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Re: Junkyard Challenge B

Postby A Person » March 6th, 2011, 1:52 pm

thanks, I'll just use scissors and duct tape
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Re: Junkyard Challenge B

Postby ichaelm » March 7th, 2011, 6:28 pm

Among others, a new clarification was posted today that interested me: http://soinc.org/node/708

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Re: Junkyard Challenge B

Postby XJcwolfyX » March 7th, 2011, 7:56 pm

What are your distances for the catapult and bouncer?
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