Junkyard Challenge B
- disownedpear
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Re: Junkyard Challenge B
around 10 meters with the catapult, but extremely inaccurate
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North Bethesda middle school
North Bethesda middle school
- gyourkoshaven
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Re: Junkyard Challenge B
I ask a few questions of those who have done catapult and or bouncer at your competitions.
2. What physically will target plates be?
3. How many launch attempts will you have?
4. With what ball will you launch
5. For bouncer, how will the judges prevent people from throwing the ball, instead of dropping?
6. Also for bouncer, what if you miss the bouncer dropping the ball? Does that count as a launch attempt?
These may be stupid questions, as it may just be me, but I felt completely lost reading the scoring for them in the rules. Thanks for anybody who can help!
1. If hitting the target plate is just a bonus, why don't people put the target plate 100 yards away from your bouncer/catapult? Nothing in the rules says it has to hit the plate for it to be counted, so why don't people just place it very far away?Rule 5.g.ii and iii. wrote:Rankings are determined by the direct, straight-line distance measured in mm from the closest edge of the catapult/bouncer to the closest edge of the target plate. Bonus points are earned for hitting the target plate.
2. What physically will target plates be?
3. How many launch attempts will you have?
4. With what ball will you launch
5. For bouncer, how will the judges prevent people from throwing the ball, instead of dropping?
6. Also for bouncer, what if you miss the bouncer dropping the ball? Does that count as a launch attempt?
These may be stupid questions, as it may just be me, but I felt completely lost reading the scoring for them in the rules. Thanks for anybody who can help!
Strath Haven MS:
2008: Regionals-3, States-5
2009: Regionals-2, States-4
2010: Regionals-1, States-2, Nationals-19
2011 (Co-captain): Regionals-1, States-1, Nationals-11
Nationals: Aquifers-37, Compute This-13, Dynamic Planet-25, Ecology-6, Experimental Design-7, Junkyard-33
Moving to C...
2008: Regionals-3, States-5
2009: Regionals-2, States-4
2010: Regionals-1, States-2, Nationals-19
2011 (Co-captain): Regionals-1, States-1, Nationals-11
Nationals: Aquifers-37, Compute This-13, Dynamic Planet-25, Ecology-6, Experimental Design-7, Junkyard-33
Moving to C...
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Re: Junkyard Challenge B
It is true that the students could put the target 100 yards away and never hit the target distance0 but they would only receive participation points if they did so. (5.e) The students have to demonstrate that their device is capable of hitting their target distance (even if they aren't able to hit their actual target plate) else they will receive only participation points.gyourkoshaven wrote:I ask a few questions of those who have done catapult and or bouncer at your competitions.1. If hitting the target plate is just a bonus, why don't people put the target plate 100 yards away from your bouncer/catapult? Nothing in the rules says it has to hit the plate for it to be counted, so why don't people just place it very far away?Rule 5.g.ii and iii. wrote:Rankings are determined by the direct, straight-line distance measured in mm from the closest edge of the catapult/bouncer to the closest edge of the target plate. Bonus points are earned for hitting the target plate.
The plates will be either paper or Styrofoam that are impounded by the students (2.b.iv)gyourkoshaven wrote: 2. What physically will target plates be?
This will depend on how many balls the students choose to use, students will have 2 minutes to finish releasing their chosen balls. (5.g)gyourkoshaven wrote: 3. How many launch attempts will you have?
Students will be allowed to determine which type and number of balls they wish to use; they may use plastic golf balls, standard golf balls or standard tennis balls. (5.a)gyourkoshaven wrote: 4. With what ball will you launch
This will be up to the judges. There are ways such as making each student hold the ball in the palm of their hand and letting them release the ball.gyourkoshaven wrote: 5. For bouncer, how will the judges prevent people from throwing the ball, instead of dropping?
I think it will, 5.g says that each ball may only be released by the team once. Besides, you have multiple balls so it shouldn't be a problem.gyourkoshaven wrote: 6. Also for bouncer, what if you miss the bouncer dropping the ball? Does that count as a launch attempt?
- Littleboy
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Re: Junkyard Challenge B
Accuracy is also very key in this event. To hit the target Rule 5f says the bonus is D x (1+n) D = distance scored n = number of balls hitting the target.
So a team that gets 1 20 meter launch will get beat by the team that gets 10 3.75 meter launches. It puts a huge emphasis on accuracy and less on distance.
So a team that gets 1 20 meter launch will get beat by the team that gets 10 3.75 meter launches. It puts a huge emphasis on accuracy and less on distance.
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Re: Junkyard Challenge B
What kind of triggers have you built for catapault? I can't seem to find a trigger that works as well ( or nearly as well) as actually pulling back with my hand.
- Littleboy
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Re: Junkyard Challenge B
Well is it legal to not use your hand but use a cup/plate/some other material to hold it?--[Grand]-- wrote:What kind of triggers have you built for catapault? I can't seem to find a trigger that works as well ( or nearly as well) as actually pulling back with my hand.
I have great ideas for all of these state devices
Current:
Tower: 9 feet tall
Bridge: 20 feet long
Cantilever: 10 feet long
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Re: Junkyard Challenge B
I went to regionals (and is going to state ). They had us build a cantilever. However, the guy managing the event allowed use of non-free standing balls. For example, one team made a cup holder for their cup, and another used straws to keep theirs from sliding down. So be sure to ask the event manager A LOT of questions, including what he/she defines as a freestanding cup.
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Re: Junkyard Challenge B
What kind of materials are you guys using to make the arm of the catapult?
I can't seem to find anything strong enough to take the strain of heaving a golf ball more than a couple of meters.
I can't seem to find anything strong enough to take the strain of heaving a golf ball more than a couple of meters.
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