Year 8 D.T

What are the advantages of the large pinion?

What is an advantage of the medium pinion?

The small pinion is the slowest

When the switch reverses the motor it is [blank_start]connecting[blank_end] (giving power) to the crossed over wires. As this is the [blank_start]opposite[blank_end] way round to the forward motor this will [blank_start]reverse[blank_end] the motor and make the vechicle go backwards. If you did not cross over the two wires and connected them normally, the vehicle will go [blank_start]forward[blank_end] as this is the same as the forward wires. If you have the crossed over wires and then give them power they will turn the motor [blank_start]backwards[blank_end] making the pinion turn backwards making the wheels turn backwards making the vehicle to go backwards.

One test that we could carry out is a test to see [blank_start]how far the car can go.[blank_end] Another test that we could carry out is a test to see [blank_start]how fast the car can go.[blank_end] A final test that we could carry out is a test to see [blank_start]how much you can control the car.[blank_end]