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In this project we were tasked with creating a RC race car capable of completing laps around a track.
Basic concept drawing
Steering ideas
Actual size
final version of the body. All the holes are sized to different parts needed for the race car to work, you can see engine mounts on the left and the screw holes for the steering parts
concept one of the steering, it was discovered after it was printed that it would be hard to make work in real life, despite working in my model
The final steering part, a lot more robust, reliable, and possible
A room was needed for the motor to be secured without tape, a requirement that was not discovered till the last second. the ends were tapered and it worked perfectly
The rear wheel, larger than the front wheel by a tiny bit to add more pressure on the front wheels when braking, and wider to add more grip
The front wheel, the opening for access to the screw is larger as I correctly assumed that I would need to access the front wheels more often
The steering supports, they were screwed in and held up well, they also worked with either turning mechanism
The final model with working joints
Full view of the car with its components zip tied and rubber banded on.
Under view of the rear wheels, wrapped in many layers of electrical tape for grip, and hot glued to provent wheel slip, although they still slipped a lot, like a limited slip differential.
The motor attached to the wheels, to provent the wheels form getting too close I added washers so they wouldnt rub the body.
the front turning mechanism, which I was very suprised that it worked. It was reliable and consistent however there was a heavy veer to the right due to the offset servo.Â
You can see the washers added so the wheels spin easier, the left wheel hole had to be redrilled as the screw holding the wheel would come loose when racing, but it was very consistent giving the amout of room for human error there was.
A last second addition of a spike, just added for fun
The spike down, made for hitting other cheap paper clip turning mechanisms.
Overall there is not much i would have done differently. The only change I would have made would be using real wheels for better grip, and I feel this would have fixed almost all problems with the car. My best lap was a 15.45 second lap, which was teh best except for the teachers car. For how quickly and roughly made my car was I was suprised at its reliablility and functionality, having much less problems than I expected. The car could even run on only three wheels and do drifts! Overall this was my favorite project and I had a lot of fun doing it.
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