Mousetrap Vehicle C

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Re: Mousetrap Vehicle C

Postby cuber » November 22nd, 2018, 10:34 am

terence.tan wrote:i think that rule 3h just means that some parts of the device cant fall off, so if the dowel is still moving with the device it should be fine.


Thats what I was hoping. Im trying to find something that outlaws shifting the dowel after starting, and aside from the fact that it is not completely in the spirit of the event, I'm drawing a blank. This would make the event trivial, you would just need to retrofit a winning car from last year with 3 gears and a long enough rack atached to the dowel. You could have the teeth of the rack cut off after 10cm so the gears push it out on the way forward, but not on the way back.

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Re: Mousetrap Vehicle C

Postby antoine_ego » November 22nd, 2018, 11:25 am

cuber wrote:
terence.tan wrote:i think that rule 3h just means that some parts of the device cant fall off, so if the dowel is still moving with the device it should be fine.


Thats what I was hoping. Im trying to find something that outlaws shifting the dowel after starting, and aside from the fact that it is not completely in the spirit of the event, I'm drawing a blank. This would make the event trivial, you would just need to retrofit a winning car from last year with 3 gears and a long enough rack atached to the dowel. You could have the teeth of the rack cut off after 10cm so the gears push it out on the way forward, but not on the way back.

I wouldn't call this trivial, so much as potentially doable. This would add a lot of weight to the vehicle, and especially at the National level, having a 50cm moving rack would be rather difficult to implement.
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Re: Mousetrap Vehicle C

Postby PM2017 » November 22nd, 2018, 12:21 pm

antoine_ego wrote:
cuber wrote:
terence.tan wrote:i think that rule 3h just means that some parts of the device cant fall off, so if the dowel is still moving with the device it should be fine.


Thats what I was hoping. Im trying to find something that outlaws shifting the dowel after starting, and aside from the fact that it is not completely in the spirit of the event, I'm drawing a blank. This would make the event trivial, you would just need to retrofit a winning car from last year with 3 gears and a long enough rack atached to the dowel. You could have the teeth of the rack cut off after 10cm so the gears push it out on the way forward, but not on the way back.

I wouldn't call this trivial, so much as potentially doable. This would add a lot of weight to the vehicle, and especially at the National level, having a 50cm moving rack would be rather difficult to implement.

Besides, the curve really isn't too much longer than the straight line distance. And curve is honestly much easier than the rack and pinion method cuber is talking about.

Still, a fun exercise in finding loopholes in rules. That's always fun.
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Re: Mousetrap Vehicle C

Postby cuber » November 22nd, 2018, 12:53 pm

antoine_ego wrote:I wouldn't call this trivial, so much as potentially doable. This would add a lot of weight to the vehicle, and especially at the National level, having a 50cm moving rack would be rather difficult to implement.


With access to a 3d printer this is really not that difficult. I’ll report back next week in whether this is a successful tactic. And like i said, I’m in NY and there’s no chance of dethroning Fayettville Manlius or columbia so my only goal is 1st at states

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Re: Mousetrap Vehicle C

Postby windu34 » November 22nd, 2018, 12:56 pm

antoine_ego wrote:
cuber wrote:
terence.tan wrote:i think that rule 3h just means that some parts of the device cant fall off, so if the dowel is still moving with the device it should be fine.


Thats what I was hoping. Im trying to find something that outlaws shifting the dowel after starting, and aside from the fact that it is not completely in the spirit of the event, I'm drawing a blank. This would make the event trivial, you would just need to retrofit a winning car from last year with 3 gears and a long enough rack atached to the dowel. You could have the teeth of the rack cut off after 10cm so the gears push it out on the way forward, but not on the way back.

I wouldn't call this trivial, so much as potentially doable. This would add a lot of weight to the vehicle, and especially at the National level, having a 50cm moving rack would be rather difficult to implement.

I do not think this is going to be accurate enough for strong performance at the national level. I also agree with Antoine that its going to be more difficult than perfecting a curved trajectory.
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Fit within 40x40 cm???

Postby asingh4688 » November 24th, 2018, 10:03 am

Is this rule of fitting within 40x40 cm a new rule, because last year I competed with a mousetrap vehicle that was about 43 cm in length and never got penalized. The CD wheels make it extend out a little past 40cm, but that portion is not touching the ground for 40 cm, so will I be ok?

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Re: Fit within 40x40 cm???

Postby PM2017 » November 24th, 2018, 10:31 am

asingh4688 wrote:Is this rule of fitting within 40x40 cm a new rule, because last year I competed with a mousetrap vehicle that was about 43 cm in length and never got penalized. The CD wheels make it extend out a little past 40cm, but that portion is not touching the ground for 40 cm, so will I be ok?

Last year it was 50 x 50. Also, you can fit it in diagonally. However, the portion that is not touching the ground does indeed count as part of the wheel, so it must fit inside the 40 x 40 "box."
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Re: Fit within 40x40 cm???

Postby dragonfruit35 » November 24th, 2018, 10:35 am

asingh4688 wrote:Is this rule of fitting within 40x40 cm a new rule, because last year I competed with a mousetrap vehicle that was about 43 cm in length and never got penalized. The CD wheels make it extend out a little past 40cm, but that portion is not touching the ground for 40 cm, so will I be ok?


Yes, the wheelbase rule has changed (I think it might have been 50x40 max dimensions before). Are you asking if you can use the same vehicle as last year? If so, that might not be in your best interest unless you know that it can be propelled for > 8m.

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Re: Mousetrap Vehicle C

Postby BadSciOly-er » November 24th, 2018, 12:05 pm

I just want to make sure:
1) the wheels can be CD's
2) the wooden dowel perpindicular to the ground can be anywhere on the vehicle since it's just used as the vehicles singular location

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Re: Mousetrap Vehicle C

Postby PM2017 » November 24th, 2018, 12:41 pm

BadSciOly-er wrote:I just want to make sure:
1) the wheels can be CD's
2) the wooden dowel perpindicular to the ground can be anywhere on the vehicle since it's just used as the vehicles singular location

1. They can be, though they are better options.
2. It almost definitely has to be at the front of the vehicle, since the cup must be touching the dowel at the start, and since you want to drop the cup off, you can't have more things in front of it.
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Re: Mousetrap Vehicle C

Postby BadSciOly-er » November 24th, 2018, 6:28 pm

PM2017 wrote:
BadSciOly-er wrote:I just want to make sure:
1) the wheels can be CD's
2) the wooden dowel perpindicular to the ground can be anywhere on the vehicle since it's just used as the vehicles singular location

1. They can be, though they are better options.
2. It almost definitely has to be at the front of the vehicle, since the cup must be touching the dowel at the start, and since you want to drop the cup off, you can't have more things in front of it.

oh i didnt realize the dowel had to be touching the cup at the start. I see the rule now. thanks!

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Re: Mousetrap Vehicle C

Postby DarthBuilder » November 27th, 2018, 9:09 am

at our most recent invitational there were multiple teams who made a longer vehicle than 40 cm and they told the supervisors that they can put their vehicle in a diagonal in the imaginary 40cmx40cm square. Is this allowed?
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Re: Mousetrap Vehicle C

Postby windu34 » November 27th, 2018, 10:16 am

DarthBuilder wrote:at our most recent invitational there were multiple teams who made a longer vehicle than 40 cm and they told the supervisors that they can put their vehicle in a diagonal in the imaginary 40cmx40cm square. Is this allowed?

Is there anything in the rules prohibiting this? If not, I dont really see a reason why it wouldnt be allowed.
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Re: Mousetrap Vehicle C

Postby DarthBuilder » December 7th, 2018, 7:20 am

is there a way to keep a pair of mousetraps on your car throughout the whole season? Currently i just glue the "U" part but i am not sure if it will do much.
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Re: Mousetrap Vehicle C

Postby antoine_ego » December 7th, 2018, 2:07 pm

DarthBuilder wrote:is there a way to keep a pair of mousetraps on your car throughout the whole season? Currently i just glue the "U" part but i am not sure if it will do much.


I'm not sure if I'm interpreting you correctly, but there's certainly no reason why you can't? Though, it'd advise you attach your traps with a non-permanent method, such as screws, so you can change them out when they lose power.
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