Table of Contents
What do you need to make a mousetrap racecar?
What You Need: Wooden snap-back mousetrap. Duct tape. 4 eye hooks. Wooden dowel that fits inside the eye hooks. Heavy cardboard. Large and small rubber bands. Foam board (usually found at a craft store) String.
How do you make a mousetrap car go faster and farther?
Use thin, light wheels. Thinner wheels have less friction and may go farther if the distance is what you want or need with your mousetrap racer. It’s also important to take the weight of the wheels themselves into account — any unneeded weight will ultimately slow your car down or lead to added friction.
What kind of string do you use 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.
How long should the lever arm be on a mousetrap car for distance?
For maximum speed, position the mousetrap 2 1/4 inches from the drive axle and cut the lever arm to a length of 4 1/4 inches. The lever arm can be cut using a dremel tool or by using a fine tooth hobby saw. The lever arm should always be “just” long enough to reach the drive axle or performance will be compromised.
How long should a mousetrap car be?
The ideal size for an ultra big wheel on a long distance mousetrap racer seams to be somewhere between 10 and 15 inches. And the ideal size for a drive wheel on a speed-trap racer seams to be between 2 and 3 inches but no more than 4 inches.
What makes a fast mousetrap car?
A speedy mousetrap car will have smaller wheels (faster acceleration), a shorter lever arm (increased torque, but smaller travel distance), a larger axle (increased acceleration) and will generally be smaller to decrease air resistance.
What is the fastest mousetrap car?
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.
Why is my mousetrap car not going straight?
If your mousetrap car does not travel straight energy is also being wasted to over come the force of friction turning the vehicle’s wheels. If a mousetrap vehicle is not traveling straight then there is one reason and one reason only: the front and rear axles are not parallel to one another!Jan 21, 2012.
What can I use for wheels on a mousetrap car?
Foamcore board or balsa wood are often used for the body. The wheels can be off-the-shelf radio-controlled car wheels, but many builders use blank CDs or DVDs because their thin edges reduce friction.
What is an axle hook on a mousetrap car?
An important part of a mousetrap vehicles propulsion system is the axle hook. If the string does not properly release from the drive axle the string will rewind around the drive axle and cause the mousetrap car to come to an instant stop.
How is the string connected to the axle on a mousetrap car?
A basic mousetrap car is powered by attaching a string to the “snap” lever on the trap, looping the other end to a small hook on the axle, winding the string around the axle of the car pulling back on the lever and arming it.
Should the string be tied to the axle Why or why not?
The string must not be tied to the axle. If the string is tied to the axle, it will begin to rewind itself and will cause your car to come to a sudden stop. In order to achieve maximum performance from your mouse-trap car, it is important that the pulling string does not slip off the drive axle prematurely.
How do you fix this mousetrap car suddenly stops or slows quickly?
Axle Points Test spin your mousetrap racers wheels in order to see how friction-free they spin. If the wheels stop spinning fairly quickly then you will need to find ways to reduce the axle friction. Try using graphite powder or even replacing bushings with ball bearings.
How do you make a rubber band car move?
Procedure Loop a rubber band through itself around the middle, exposed part of the wooden skewer (where you cut out a notch in the cardboard and straw). Tape the rubber band to the skewer to prevent it from slipping—when the skewer rotates, the rubber band should rotate with it.
How do you make a rat trap car go far?
Mousetrap cars will go farther if the spring has more distance from the back wheels. Create traction on the wheels. Add rubber bands, or tape around the wheels to give them better traction. The better the wheels can grip the floor, the farther the mousetrap car will go.
Is weight important in a mousetrap car?
Reduce the most friction you can because the more friction the more energy is lost in propelling the car. Mass should also be taken into account, the more the car weighs the more energy from the mousetrap spring will be used so it’ll be best to make the car light weight.
Is it better to have a heavier or lighter mousetrap car?
A heavy mousetrap vehicle will required more pulling force than a lighter mousetrap vehicle in order to achieve an equal acceleration. Lighter mousetrap vehicles will require less energy at the start and can use longer lever arms for more pulling distance.
Are Bigger wheels better for a mousetrap car?
By changing the size of the drive wheel(s) you can speed-up or slow-down your mousetrap vehicle. Larger drive wheels will have a greater travel distance per each turn compared to smaller drive wheel.
What is gravity vehicle?
Gravity Vehicle is an event that returned for the 2020 and 2021 competition seasons after being held in 2012 and 2013. In this event, competitors design and build a ramp and a vehicle that is powered solely by the vehicle’s gravitational potential energy.
