Limitation B5 (in problem packet) states the following:
- The mousetrap may not be disassembled. Enhancements may not be made to the mousetrap spring. The mousetrap spring, hammer, catch (trigger) and holding bar must remain attached to the original mousetrap.
So a team may NOT take parts off their mousetrap. As long as the device is still ‘triggered’ (not just released with your hand), teams may end up not using all the mousetrap parts, but the parts listed in the rule packet must still be part of the trap.
can you make you’r car the same size as the mouse tarp? but the mouse trap is bigger than the size you said in the rules.
The entire device cannot be larger than 3’ high, 3’ long and 3’ wide when set-up and ready to be triggered at the starting line. This means that it can be as big as 3 feet wide, long, and high. The mousetrap needs to be the size described in the problem packet, so you cannot use a mousetrap that is bigger than the type stated in the rules.
1. The only source of energy for each device is a single, typical mousetrap (“Victor” brand or similar type) 17/8” x 37/8”. They should be readily available at hardware and/or variety stores.
Yes, you can adjust your device in between the rounds, but only during the setup time if your team qualifies for the 2nd heat. Once you have been called down to go, you will have a 3 minute set up time in the lane where you will get your mouse trap ready to be sprung. After running their device in the first heat, teams must put their device back against the back wall of the large gym. If a team qualifies for the 2nd heat, they may only adjust their device during the 3 minute setup time when their team has been called down to run the 2nd heat.
The registration forms can be found on this blog ‘forms and info’ link –
*Up to 4 TEAMS PER SCHOOL may register (not 4 teams per age division) *In the interests of encouraging more intermediate team numbers (grades 7 and up), a middle school may send up to 5 teams if their 5 teams are spread out from 6-8th grade (between 2 age division levels). If you’re unsure of what I mean, please email me for clarification.
The district meet usually is limited to around 50 registered teams (space and time limitations). Please hold any school runoffs by Oct. 11th, so you can send registration forms by then.
Please note that forms are due no later than, Tuesday, October 11th by 4 pm.
The following clarifications and notices should be known and reviewed by ALL participating teams and coaches:
* One team member must trigger the device after it’s been placed at the starting line (see Limitation 8 below), so teams may NOT just hold the device and then release it or let it go. One team member must trigger the actual mousetrap ‘catch’ to start the device’s movement. This is part of the challenge for teams, to try to get their device reliable enough so that it will move after being triggered!
* 8. The entire device cannot be larger than 3’ high, 3’ long and 3’ wide when set-up and ready to be triggered at the starting line. (Yes, judges will be measuring these dimensions, so don’t get disqualified by being 1 inch too long or high!)
* “the only source of energy for each device is a single, typical mousetrap” – this includes no rubber bands wound up to have energy released. This also includes no elastic material used on the device that helps store ‘extra’ energy to be released (be safe and don’t use anything that could be considered elastic in your device setup plans).
*3. If any part of the device that is touching the floor crosses a lane line while in motion, it will be at that point that Judges will stop distance measurement. Measurement will be a straight line (parallel to the lane lines) from the starting line to the point at which the device went outside the lane line (no diagonal measurements). So a device may have something ‘hang over’ the lane markers, but once any part of the device goes beyond the lane marker (crosses over), that’s where judges stop the distance measurement. A device that travels along the lane marker will only be counted ‘out’ of the lane when one of the wheels (or points in contact with the floor) goes completely outside the lane marker.
*If a team’s device hit’s the target at the end of the 21 foot lane (without going out of their lane prior to hitting the target), then that team will be awarded the full distance points (42 points). The objective is to not run over the target can or plow it over, the objective is to touch the can, so teams who are able to do this but haven’t gone the full 21 feet will still get maximum distance points.
Yes, you can add string to the mousetrap. Just no other energy sources.
Yes you are correct. Your device will only be considered out, if the parts that touch the floor go out of the lines.
Hello. I just wanted to check that the device needs to travel 21 feet (not 21 inches). Would Lego pieces (wheel, etc.) be considered ordinary “found objects”? Would a wheel that was 3D printed be allowed? Thanks much.
You are correct, the device needs to travel 21 feet. Lego pieces are definitely “found pieces” . The 3d printed wheel would also be allowed.