Mousetrap Vehicle C

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Mousetrap Vehicle C

Post by windu34 » June 30th, 2018, 9:50 am

Mousetrap Vehicle C: Teams design, build and test a vehicle using one or two snap mousetraps as its sole means of propulsion to push a paper cup forward, reverse direction, and stop as close as possible to a target point.

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Re: Mousetrap Vehicle C

Post by Things2do » September 3rd, 2018, 8:35 pm

The Rules are harsh difficult strenuous strange this year.
That second trap might be too much power for the track.
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Re: Mousetrap Vehicle C

Post by nicholasmaurer » September 3rd, 2018, 8:36 pm

Anyone care to comment on whether the 3oz cup rule (5.c.) refers to weight or volume? I would assume volume - but it seems like a pretty glaring ambiguity to me...
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Re: Mousetrap Vehicle C

Post by nicholasmaurer » September 3rd, 2018, 8:57 pm

Additionally, 5.b and 5.i. read together seem to imply that a vehicle that is ready to run at 7:59 would be allowed to complete said run, but that it would be marked as a failed run if it took longer than the remaining second. This would be a notable change from past years, although it may be unintentional...
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Re: Mousetrap Vehicle C

Post by antoine_ego » September 4th, 2018, 4:53 am

nicholasmaurer wrote:Anyone care to comment on whether the 3oz cup rule (5.c.) refers to weight or volume? I would assume volume - but it seems like a pretty glaring ambiguity to me...
I'm pretty sure it means volume, since 3 oz is 85 g, which would be unreasonably heavy for a paper cup.

There's some ambiguity in the placement of the VTP. It states that the VTP is between the SP and the CTP, but it doesn't state measured from which point. For example, if the VTP distance was 1.00m, it could be 1.00 m from the SP (which seems pretty difficult), or 1.00m from the CTP (a lot easier). Am I missing something?
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Re: Mousetrap Vehicle C

Post by nicholasmaurer » September 4th, 2018, 5:44 am

antoine_ego wrote:
nicholasmaurer wrote:Anyone care to comment on whether the 3oz cup rule (5.c.) refers to weight or volume? I would assume volume - but it seems like a pretty glaring ambiguity to me...
I'm pretty sure it means volume, since 3 oz is 85 g, which would be unreasonably heavy for a paper cup.
Agreed. However, without an FAQ (or rule clarification changing it to fl oz.), I would rule in favor of an ES who used a cup of any volume that weighed 3oz OR a cup with a 3oz volume.

To be fair, last year's rules had the same ambiguity, but it was less concerning because it would be incredibly difficult to find a plastic cup weighing 16oz...
Last edited by nicholasmaurer on September 4th, 2018, 6:06 am, edited 1 time in total.
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Re: Mousetrap Vehicle C

Post by nicholasmaurer » September 4th, 2018, 5:49 am

antoine_ego wrote:There's some ambiguity in the placement of the VTP. It states that the VTP is between the SP and the CTP, but it doesn't state measured from which point. For example, if the VTP distance was 1.00m, it could be 1.00 m from the SP (which seems pretty difficult), or 1.00m from the CTP (a lot easier). Am I missing something?
I would refer you to the track diagram here which is incorporated as part of the rules per 6.a.
Last edited by bernard on September 23rd, 2018, 11:13 pm, edited 1 time in total.
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Re: Mousetrap Vehicle C

Post by antoine_ego » September 4th, 2018, 5:58 am

nicholasmaurer wrote:
antoine_ego wrote:There's some ambiguity in the placement of the VTP. It states that the VTP is between the SP and the CTP, but it doesn't state measured from which point. For example, if the VTP distance was 1.00m, it could be 1.00 m from the SP (which seems pretty difficult), or 1.00m from the CTP (a lot easier). Am I missing something?
I would refer you to the track diagram here which is incorporated as part of the rules per 6.a.
I think that might be the 2018 diagram. But thanks! I'll just wait until the diagram comes out :)
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2018 Hovercraft Nationals - 6th
2018 Mousetrap Nationals - 6th
2018 Nationals - Team 9th Place!
2019 Astronomy Nationals - 3rd!
2019 Nationals - Team 9th Place!
[/b]
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Re: Mousetrap Vehicle C

Post by nicholasmaurer » September 4th, 2018, 6:04 am

antoine_ego wrote:
nicholasmaurer wrote:
antoine_ego wrote:There's some ambiguity in the placement of the VTP. It states that the VTP is between the SP and the CTP, but it doesn't state measured from which point. For example, if the VTP distance was 1.00m, it could be 1.00 m from the SP (which seems pretty difficult), or 1.00m from the CTP (a lot easier). Am I missing something?
I would refer you to the track diagram here which is incorporated as part of the rules per 6.a.
I think that might be the 2018 diagram. But thanks! I'll just wait until the diagram comes out :)
You're right - that is last year's diagram. I expect the new one will be out very soon and should clarify the measurements. It's hard to visualize/interpret without a diagram.
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Re: Mousetrap Vehicle C

Post by Things2do » September 4th, 2018, 7:30 am

nicholasmaurer wrote:Anyone care to comment on whether the 3oz cup rule (5.c.) refers to weight or volume? I would assume volume - but it seems like a pretty glaring ambiguity to me...
It sounded like volume to me too. It would be hard to find a 3oz weight paper cup, and the ES couldn't put anything in it since it's upside down.

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