Search found 13 matches

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by shri
March 4th, 2019, 3:24 pm
Forum: Roller Coaster B
Topic: Unbroken track
Replies: 10
Views: 798

Re: Unbroken track

I'm nervous about it as well. Our ball clears the gap fine, and goes 5+ cm, hits the wall (which the landpad is connected to), then ricochets around a bit before heading downhill on the track. The sidewalks are a good idea though, but the ball will eventually hit wall. Tough rule with no full expla...
by shri
March 2nd, 2019, 6:54 am
Forum: Roller Coaster B
Topic: Unbroken track
Replies: 10
Views: 798

Re: Unbroken track

Hmm. It is a video from this year too.
by shri
February 28th, 2019, 9:29 pm
Forum: Roller Coaster B
Topic: Unbroken track
Replies: 10
Views: 798

Re: Unbroken track

Does unbroken track mean that the track can’t bend once the ball lands on it? I believe it means 1 piece of track with no gaps in it. However it should not hit the side wall of the curve during that first 5 cm. The rules say nothing about not hitting the side wall. It will be so hard for the judge ...
by shri
December 3rd, 2018, 10:22 am
Forum: Lab Events
Topic: Mystery Architecture B
Replies: 74
Views: 10629

Re: Mystery Architecture B

What I am coaching right now is practicing to measuring to the bottom of the arch platform / top. So if they build an arch that is 20 cm high but has cross bracing at 10 cm high, then the max height is 10 cm. But I've also talked with them about how we are making educated guesses and it is very imp...
by shri
December 3rd, 2018, 9:11 am
Forum: Lab Events
Topic: Mystery Architecture B
Replies: 74
Views: 10629

Re: Mystery Architecture B

Sorry for double posting but I also think you can have two mini towers and something in between to hold the load. I don’t think it has to be one column on each side. Whether you use two columns or two mini towers on the side, the question for me is whether it is acceptable to have a cross-brace con...
by shri
December 3rd, 2018, 7:55 am
Forum: Lab Events
Topic: Mystery Architecture B
Replies: 74
Views: 10629

Re: Mystery Architecture B

That is what I am thinking and coaching. Essentially a tower with only 2 sides on either end. But with a gap in between that is provided by the ES so is it like an elevated bridge with the height being the main dimension and having a set minimum distance in between Sorry for double posting but I al...
by shri
December 2nd, 2018, 9:36 pm
Forum: Lab Events
Topic: Mystery Architecture B
Replies: 74
Views: 10629

How will an arch be specified?

How will the primary dimension of an arch be defined an measured? This is the "sample task" in the rules manual. For an arch, the Primary Dimension could be measured: i. with no load, from the base to the highest point of the arch ii. with a load, from the base to the highest point of the ...
by shri
December 2nd, 2018, 5:35 pm
Forum: Roller Coaster B
Topic: The beginning and the end of each Gap must be at least 0.5 cm above the next surface(s) below them.
Replies: 7
Views: 1052

Re: The beginning and the end of each Gap must be at least 0.5 cm above the next surface(s) below them.

Your drawing (nice drawing! - much easier to follow than words) is already covered by "Gaps must have a horizontal span of at least 5.0 cm from the end of the track the ball/sphere leaves measured to the closest part of the track the ball/sphere lands on." The horizontal span in your drawi...
by shri
December 2nd, 2018, 4:03 pm
Forum: Roller Coaster B
Topic: The beginning and the end of each Gap must be at least 0.5 cm above the next surface(s) below them.
Replies: 7
Views: 1052

Re: The beginning and the end of each Gap must be at least 0.5 cm above the next surface(s) below them.

The rules manual says: "The beginning and the end of each Gap must be at least 0.5 cm above the next surface(s) below them." What does this mean? Since its in bold, I wanted to check exactly what this was referring to. So basically when you have a gap it cant be just skidding across multi...
by shri
December 2nd, 2018, 11:41 am
Forum: Roller Coaster B
Topic: The beginning and the end of each Gap must be at least 0.5 cm above the next surface(s) below them.
Replies: 7
Views: 1052

The beginning and the end of each Gap must be at least 0.5 cm above the next surface(s) below them.

The rules manual says: "The beginning and the end of each Gap must be at least 0.5 cm above the next surface(s) below them." What does this mean? Since its in bold, I wanted to check exactly what this was referring to.
by shri
November 19th, 2018, 8:25 pm
Forum: Lab Events
Topic: Mystery Architecture B
Replies: 74
Views: 10629

Re: Mystery Architecture B - cantilever fulcrum and counterbalance

The rules manual says "If a cantilever is to be built, the event supervisor will supply the fulcrum, and provide a counterbalance." What are examples of a fulcrum and counterbalance? Would it be reasonable to practice with the edge of a table and a heavy book? I guess that a edge of a tab...
by shri
November 18th, 2018, 5:02 pm
Forum: Lab Events
Topic: Mystery Architecture B
Replies: 74
Views: 10629

Mystery Architecture B - enclosed tunnel

The rules manual says that for a tunnel, the Primary Dimension could be the measurement of the longest continuously enclosed portion of the tunnel. What does enclosed mean? If you are building with popsicle sticks, there are gaps between the sticks? Is that ok?
by shri
November 18th, 2018, 5:00 pm
Forum: Lab Events
Topic: Mystery Architecture B
Replies: 74
Views: 10629

Mystery Architecture B - cantilever fulcrum and counterbalance

The rules manual says "If a cantilever is to be built, the event supervisor will supply the fulcrum, and provide a counterbalance." What are examples of a fulcrum and counterbalance? Would it be reasonable to practice with the edge of a table and a heavy book?

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