## Search found 10 matches

March 19th, 2014, 10:11 am
Forum: 2014 Build Events
Topic: MagLev C
Replies: 236
Views: 29109

### Re: MagLev C

Chalker, I know it says the track must be placed on a level surface, but what about propping the track at a small angle to reduce the speed of the car? I can't find any rules to prohibit this so I'm hoping this would be allowed. I'm sure this should be submitted as an FAQ, but since the topic was b...
March 18th, 2014, 9:09 pm
Forum: 2014 Build Events
Topic: MagLev C
Replies: 236
Views: 29109

### Re: MagLev C

Chalker, I know it says the track must be placed on a level surface, but what about propping the track at a small angle to reduce the speed of the car? I can't find any rules to prohibit this so I'm hoping this would be allowed.
March 30th, 2011, 6:13 pm
Forum: 2011 Build Events
Topic: Junkyard Challenge B
Replies: 430
Views: 38101

### Re: Junkyard Challenge B

What would you guys expect to be a competitive score for a catapult 12000ish?
And what about bouncer what kind of score would be good for that?
March 30th, 2011, 4:43 am
Forum: 2011 Build Events
Topic: Junkyard Challenge B
Replies: 430
Views: 38101

### Re: Junkyard Challenge B

skillfullparrot7 wrote:The formula for scoring is D*(n+1)=total score. D=distance, n=number of balls transported or hit target plate.
Just as a reminder Distance is measured in mm so his score was 1930 times 6
March 19th, 2011, 5:23 pm
Forum: 2011 Build Events
Topic: Junkyard Challenge B
Replies: 430
Views: 38101

### Re: Junkyard Challenge B

The rules say you can't use tape to secure things to the floor ( it says this in front of tape in the allowed items list)
March 14th, 2011, 4:50 pm
Forum: 2011 Build Events
Topic: Junkyard Challenge B
Replies: 430
Views: 38101

### Re: Junkyard Challenge B

disownedpear wrote:around 10 meters with the catapult, but extremely inaccurate
With what ball are you achieving 10 meters?
March 14th, 2011, 4:49 pm
Forum: 2011 Build Events
Topic: Junkyard Challenge B
Replies: 430
Views: 38101

### 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.
February 16th, 2011, 1:51 pm
Forum: 2011 Build Events
Topic: Junkyard Challenge B
Replies: 430
Views: 38101

### Re: Junkyard Challenge B

mnstrviola wrote:What materials have you found to be the most effective as a counterweight/weight? I think golf balls would probably work best , but I'm not sure
tennis balls are heavier (tennis balls 60 grams, golf balls 45) but golf balls take up less space so its up for grabs as to the best weight.
February 12th, 2011, 8:17 pm
Forum: 2011 Build Events
Topic: Junkyard Challenge B
Replies: 430
Views: 38101

### Re: Junkyard Challenge B

What kinds of distances are you guys getting for the catapult? It says it will be measured in mm so its probably not expected to be too big.
Also it never specifies what the catapult must be powered by, could it be rubber bands (like trajectory) and/or weights (like storm the castle)?
December 7th, 2010, 1:39 pm
Forum: 2011 Build Events
Topic: Junkyard Challenge B
Replies: 430
Views: 38101

### Re: Junkyard Challenge B

I got a bridge that was about four feet.