Page 10 of 61

Re: Mousetrap Vehicle C

Posted: November 10th, 2017, 9:58 pm
by EcoDyne
Hey guys I'm a new member and I have a question about rule 7.d.i.

It states that if the entire cup in any orientation ends up past the Cup Target Line, the Cup Distance Score = 0. Since the lowest final score wins, does this mean that you want to push the cup past the Cup Target Line? I'm confused about this because it seems a lot easier to just push the cup past the line than to line up the cup exactly with the cup target line.

Re: Mousetrap Vehicle C

Posted: November 10th, 2017, 10:56 pm
by Alex-RCHS
EcoDyne wrote:Hey guys I'm a new member and I have a question about rule 7.d.i.

It states that if the entire cup in any orientation ends up past the Cup Target Line, the Cup Distance Score = 0. Since the lowest final score wins, does this mean that you want to push the cup past the Cup Target Line? I'm confused about this because it seems a lot easier to just push the cup past the line than to line up the cup exactly with the cup target line.
Yes, the best case scenario is that you push the cup entirely past the starting line. Whether you push it one inch past, or one meter past is entirely up to you and does not directly affect your score. (However, it is preferable to push it only slightly past the line in order to lower your time)

Re: Mousetrap Vehicle C

Posted: November 14th, 2017, 4:58 am
by MangoTTT
Hi, one problem I had when building the mousetrap vehicle is that when I put everything in place and set it up, the car won't move when I put it on the floor, and I used two mousetraps. Is there any way to fix it?

Re: Mousetrap Vehicle C

Posted: November 14th, 2017, 6:14 am
by PM2017
MangoTTT wrote:Hi, one problem I had when building the mousetrap vehicle is that when I put everything in place and set it up, the car won't move when I put it on the floor, and I used two mousetraps. Is there any way to fix it?
Can you post a picture?

Re: Mousetrap Vehicle C

Posted: November 14th, 2017, 12:21 pm
by Alex-RCHS
MangoTTT wrote:Hi, one problem I had when building the mousetrap vehicle is that when I put everything in place and set it up, the car won't move when I put it on the floor, and I used two mousetraps. Is there any way to fix it?
1. Did you wind the axle in the right direction? If not, your car might be trying to reverse with your wingnut stopping it.
2. If you lift the drive wheels off the ground do they spin?
3. How long is your lever arm?

Re: Mousetrap Vehicle C

Posted: November 14th, 2017, 3:43 pm
by MangoTTT
Alex-RCHS wrote:
MangoTTT wrote:Hi, one problem I had when building the mousetrap vehicle is that when I put everything in place and set it up, the car won't move when I put it on the floor, and I used two mousetraps. Is there any way to fix it?
1. Did you wind the axle in the right direction? If not, your car might be trying to reverse with your wingnut stopping it.
2. If you lift the drive wheels off the ground do they spin?
3. How long is your lever arm?
1. yes and i did not add the wingnut in yet
2. yes
3. uhhh about 15cm?

Re: Mousetrap Vehicle C

Posted: November 14th, 2017, 4:49 pm
by windu34
MangoTTT wrote:
Alex-RCHS wrote:
MangoTTT wrote:Hi, one problem I had when building the mousetrap vehicle is that when I put everything in place and set it up, the car won't move when I put it on the floor, and I used two mousetraps. Is there any way to fix it?
1. Did you wind the axle in the right direction? If not, your car might be trying to reverse with your wingnut stopping it.
2. If you lift the drive wheels off the ground do they spin?
3. How long is your lever arm?
1. yes and i did not add the wingnut in yet
2. yes
3. uhhh about 15cm?
How heavy is it? Also pics would help if possible

Re: Mousetrap Vehicle C

Posted: November 14th, 2017, 5:27 pm
by Unome
MangoTTT wrote:
Alex-RCHS wrote:
MangoTTT wrote:Hi, one problem I had when building the mousetrap vehicle is that when I put everything in place and set it up, the car won't move when I put it on the floor, and I used two mousetraps. Is there any way to fix it?
1. Did you wind the axle in the right direction? If not, your car might be trying to reverse with your wingnut stopping it.
2. If you lift the drive wheels off the ground do they spin?
3. How long is your lever arm?
1. yes and i did not add the wingnut in yet
2. yes
3. uhhh about 15cm?
15 cm strikes me as very short - I'd recommend at least 40 cm, maybe more. And agree with windu, how heavy?

Re: Mousetrap Vehicle C

Posted: November 14th, 2017, 6:08 pm
by MangoTTT
Unome wrote:
MangoTTT wrote:
Alex-RCHS wrote: 1. Did you wind the axle in the right direction? If not, your car might be trying to reverse with your wingnut stopping it.
2. If you lift the drive wheels off the ground do they spin?
3. How long is your lever arm?
1. yes and i did not add the wingnut in yet
2. yes
3. uhhh about 15cm?
15 cm strikes me as very short - I'd recommend at least 40 cm, maybe more. And agree with windu, how heavy?
about 500grams, also i don't have a picture right now sorry ;( but it's like any other regular mousetrap vehicle, four wheels, long rectangular body and metal rods.

Re: Mousetrap Vehicle C

Posted: November 14th, 2017, 6:26 pm
by Alex-RCHS
Depending on your wheel size, 15cm could be fine. Mine is currently about that length and works fine (times around 10s, not amazing but certainly not limited by the lever arm). It depends partially on your wheel and axle diameters.

Edit: 500g is a little on the heavy side, but I don't think that would prevent it from moving. What are the diameters of your drive wheels and axle?