5. Conclusions

5. Conclusions

5.1 Practical Applications

We could help the car industries because our project is related to torque and distance so the car industries could use our findings to improve their car’s performance as smaller wheels would aid in the acceleration of cars and improve performance. A test was conducted to prove this. Five wheel-and-tire combinations —ranging from 38.1 cm to 48.3 cm— were tested on a 2010 Volkswagen Golf (QUIROGA, 2010). As the wheel-and-tire packages become larger and heavier, acceleration and fuel economy drops (QUIROGA, 2010). A 10-percent reduction in fuel economy and a four-percent degradation in 0 km/h - to - 96.6 km/h acceleration is measured from the 38.1 cm to the 48.3 cm (QUIROGA, 2010).

We can also improve the manual transmissions in cars such that when it switches to the next gear, the torque multiplied is useful, whereby it is not too great and not too little when the car is in different scenarios, thus making the system very efficient. According to Nord, (2015), A wide selection of available ratios enables for more opportunities to select an accurate speed reduction or torque for a specific application.

5.2 Areas for further study

We can also research on how rotational inertia (moments of inertia) affects the torque of the cars as we did not focus much on this and this may also affect the performance of cars. For example, according to Sport, Kojima, and Sport Compact Car Magazine Staff, (2002), by increasing the size of the wheel from 35.6 cm to 43.2 cm, the weight is not only increased, but also effectively moved the weight further towards the edge of the diameter. This makes it hard to accelerate. The technical term for this is called the moment of inertia (Sport, Kojima, and Sport Compact Car Magazine Staff, 2002).

Secondly, we can also research on how current affects torque of the motor as it may also affect the performance of cars and we did not mention much on this topic in our research. For DC motors, the output torque is proportional to the current going into the motor no matter what the motor speed (DC motors, no date). In addition, our special observation also showed this effect, so we decided to find out whether current affects the torque of the motor. However, we would use a variable power supply instead as we can adjust it such that a fixed current would be supplied to the motor, unless we turn the knob.

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