Storm the Castle B

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Storm the Castle B

Postby Jim_R » July 2nd, 2011, 5:30 pm

Discussion for Storm the Castle B.

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Re: Storm the Castle B

Postby mnstrviola » August 28th, 2011, 8:47 pm

http://www.youtube.com/watch?v=uvQlY_1BrXI

- a popular design for a trebuchet

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Re: Storm the Castle B

Postby JSGandora » August 29th, 2011, 9:44 am

Does anyone know the winning distances for nationals last year?

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Re: Storm the Castle B

Postby mnstrviola » August 29th, 2011, 1:59 pm

JSGandora wrote:Does anyone know the winning distances for nationals last year?


check Jim R's post

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Re: Storm the Castle B

Postby JSGandora » August 30th, 2011, 5:30 pm

Sorry, which post are you referring to?

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Re: Storm the Castle B

Postby butter side up » August 30th, 2011, 5:35 pm

The very first post. With the list of resources. That would be a good place to look.
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Re: Storm the Castle B

Postby JSGandora » August 30th, 2011, 5:56 pm

lol, oops. Sorry, but I can't find the distances in any of the links he provided?

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Re: Storm the Castle B

Postby confusedhuman » September 8th, 2011, 8:03 pm

Are gears allowed in the building of the trebuchets?

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Re: Storm the Castle B

Postby chalker » September 9th, 2011, 11:31 am

JSGandora wrote:lol, oops. Sorry, but I can't find the distances in any of the links he provided?



FYI, it you are looking at the distances from last year to use as some sort of goal for this year, I wouldn't. We changed enough things in the rules to make it likely that the distances will all be shorter.

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Re: Storm the Castle B

Postby chalker » September 9th, 2011, 11:32 am

confusedhuman wrote:Are gears allowed in the building of the trebuchets?


General rule #2 applies to most questions like this: http://soinc.org/ethics_rules

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Re: Storm the Castle B

Postby disownedpear » September 9th, 2011, 2:48 pm

i cant believe the new size requirements
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Re: Storm the Castle B

Postby chalker » September 9th, 2011, 7:16 pm

disownedpear wrote:i cant believe the new size requirements



I know... it's exactly what you were wishing upon a star for but didn't think we'd ever be willing to do right? ;)

In all seriousness though, a fundamental thing we tried to do with the changes this year is reduce the max throw distance. Event supervisors were having a very difficult time finding facilities that were big enough to hold the event in last year.

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Re: Storm the Castle B

Postby foreverphysics » September 10th, 2011, 8:18 pm

Well, I don't know how far the launch was supposed to be at Nats (because I didn't actually do Storm), but I do know that the counterweight was 1.5 kg. I helped my teammate test the thing, and I know the weight because it was one of the weights we hadn't gotten to testing yet.
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Re: Storm the Castle B

Postby confusedhuman » September 11th, 2011, 7:01 pm

chalker wrote:
confusedhuman wrote:Are gears allowed in the building of the trebuchets?


General rule #2 applies to most questions like this: http://soinc.org/ethics_rules


soooo thats a yes? welll anyways have u guys heard of trebs which arms swing around the axle and then launch?

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Re: Storm the Castle B

Postby wlsguy » September 11th, 2011, 7:33 pm

confusedhuman wrote:
chalker wrote:
confusedhuman wrote:Are gears allowed in the building of the trebuchets?


General rule #2 applies to most questions like this: http://soinc.org/ethics_rules


soooo thats a yes? welll anyways have u guys heard of trebs which arms swing around the axle and then launch?


You are talking about multi rotational trebuchets (MRT). They have been allowed in the past. They have a nice video
http://www.youtube.com/watch?v=PHFHiNeX1Dk

The problem with gears is you lose something when you make the change in ratio. You may increase arm speed but at a loss of power. It is also difficult to insure you do not break the energy rule since at some point the throwing arm will fall forward (in direction of the launch).

It's my opinion a MRT would not violate general rule # 2 but would likely break the energy rule (or be really inefficient).


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