Design Futures

In class we have been developing our cars. We had to finish them then use the two big cogs which were 50 or 60 teeth and the three small gears that are 8, 10 or 12 teeth and race them with the six different combinations to see which is the fastest for your car. I have the 60 teeth with the 8 teeth gears on and my fastest time is 3.7 seconds down the track. I then went to race mine yesterday and found my moter was making a funny noise and the wheels were also sounding weird. Mr Ward had to get a new axel and wheels and now the car is working well but is now over 4 seconds down the track. next lesson i need to check everything is the way i want it before cutting the wires and permanently soildering them together. this will mean i cannot change the cog combination. After this i will lubricate the wheels and axis and keep improving aspects of the car to make it faster. i also need to start the written part of the assignment whihc is due in two weeks.

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in class lately we have been making our cars. I had to change my design towards the beggining to make it mmore simple. i also had to alter the measurements and Mr Ward's car didn't go straight as the distance between the wheel and centre on each side was different as he hadn't acounted fro the cog. Yesturday i finished the whhel axis and hot glues them onto the car. i had to cut the front axis as it is narrower. My car does go straight and i am happy with the way it is so far. Next lesson i will beging to glue the battery holder on, the switch and engine then i will use the different conbinations of cogs to race it and see which is faster.

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This term we will be making our own cars and race them against others in the class. we will also be looking at the best designs for the car to go faster and the best combination of the cogs. so far i have designed mine and made it out of a light wood. I have tried to make the design as small as possible and a curved shape so it will be fast and aero dynamic. In the kits given to us we got 4 wheels, axels, battery holder, moter, switch and cogs. so far i have only finished my design, made it out of wood and sanded the edges. Next lesson i will start to mark out where the axels will go and the length they will need to be as i will have to cut the front one smaller. I had to modify my original design and made it less curved and more accurate. this took me a while as i also struggled cutting it out but i am happy with the way my design is going.

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