How do you build a speed and distance mousetrap car?
The greater the ratio of the diameter of the axle to the wheel, the less force will be required to accelerate the car. In other words, you should match a larger axle with a smaller wheel to increase acceleration. Conversely, a mousetrap racer built for distance should have a smaller axle and a larger driving wheel.
What is the best length for a mousetrap car?
Max Length – 45 cm. Max Width – 20 cm. Height – 20 cm. Min ground clearance – 4 cm.
Should a mousetrap car be heavy or light?
Lighter mousetrap vehicles will require less energy at the start and can use longer lever arms for more pulling distance. Always use lightweight components when building a mousetrap vehicle. bonus tip: lightweight mousetrap vehicles require less pulling force off the start.
What is the fastest mousetrap car design?
The Speed-Trap Racer is the fastest mousetrap powered racer anywhere and was designed after Doc Fizzix’s own record-setting mousetrap racer that traveled 5 meters in 1.2 seconds.
How do you increase the friction of a mousetrap car?
Larger diameter axles have greater friction when compared to the same axle of a smaller diameter. With a smaller diameter axle the force of friction is applied closer to the center of rotation and applies less torque than a larger diameter axle. Try to select axles that are equal to or less than 3/16 inch in diameter.
What happens if the mousetrap is placed too far from the drive axle?
6. What happens if the mousetrap is mounted too far from the drive axle? You will lose pulling force or energy to friction.
Is there a pulley in a mousetrap car?
Introduction: Mousetrap Car The car uses physics and engineering concepts such as pulleys, levers, and springs to convert potential energy to kinetic energy which moves the car along.
How do you make a mousetrap vehicle go forward and reverse?
To make a reversing mousetrap car go forward and then come back you will need to know how to “back-wind” the string. Back-winding the string it a technique where you first wind the string around the axle in one direction and then rewind the string in the opposite direction.
How long should the lever arm be on a mousetrap car?
Build your mousetrap powered car using a 12-inch lever arm and make sure not to glue the mousetrap to the frame. Use small micro bolts or Doc FIzzix hold down bolts for attaching. the basic kit: using Doc FIzzix’s Basic kit, start with a 12-inch lever arm and attach the mousetrap to the frame with hold down bolts.
How far do you have to drive to release mice?
Captured mice and rats can be kept calm by placing a towel over the trap. Release them within 100 yards of where they were trapped. (Rodents can also be humanely euthanized by a veterinarian or at a local animal shelter.)
Why is my mousetrap car not going far?
Vehicle weight is an important factor to consider reducing if your mousetrap vehicle is not traveling far enough. The greater your mousetrap vehicle weighs, the shorter the distance it will cover and the speed it will travel. This consequence is due to the limited energy within the mousetrap.
Are big wheels better for a mousetrap car?
Wheels and Axles Larger drive wheels will have a greater travel distance per each turn compared to smaller drive wheel. It would make sense to use a super huge drive wheel so for each turn of this massive drive wheel the mousetrap vehicle will travel an incredible distance.
How do you make a mousetrap car stop at a certain distance?
Setting the braking system is simple and easy: just place the vehicle at the finish line with the wing nut in the lock position, roll the vehicle back to the start line and the wing nut is set to the exact starting position.
What are the best materials to make a mousetrap car?
A mousetrap car can be made from cardboard or balsa wood with CD’s for wheels and axles of wood or brass tubing. Power to drive the wheels is provided by a mousetrap to which a wand and string is attached to the snap arm.
What kind of string is best for a mousetrap car?
The string has to be strong enough to handle the pulling force but flexible and thin enough to wind tightly around the drive axle. We recommend using a Kevlar based fishing line because its high strength. You should stay away from nylon fishing line and dental floss, these do not work well with mousetrap racers.
What is the best wood for a mousetrap car?
Balsa wood, pine, or bass wood are excellent choices although balsa wood is somewhat brittle and hard to drill holes into without ripping. Other materials can also be used for making a light weight strong and stiff frame. These include Styrofoam, corrugated cardboard, plastics, aluminum and brass tubing.
How do you reduce friction on a mousetrap car?
Try to have a minimum gap of 1/8 inch between the frame and any spacers (or wheels) in order to decrease any rubbing friction. Use thrust washers and graphite powder between spacers (or wheels) and the frame to help reduce the rubbing friction.
Is weight important in a mousetrap car?
The greater your mousetrap vehicle weighs, the shorter the distance it will cover and the speed it will travel. This consequence is due to the limited energy within the mousetrap.
Why do mousetrap cars use CDs?
Why do so many mousetrap cars use CD/DVD for wheels? Because CDs and DVDs are some of the best wheels you will ever find for building a long distance mousetrap powered vehicle. CD/DVD wheels can slice through the air with very little air resistance and they have very little rotational inertia.
How do you make a mousetrap car go really fast?
By changing the size of the drive wheel(s) you can speed-up or slow-down your mousetrap vehicle. Larger drive wheels have a greater travel distance per each turn compared to smaller drive wheel. As the size of the drive wheel increase the torque required to start a wheel turning also increase.