This Friday we have our final presentation, and some small adjustments to the motor. For cable management, we 3D printed a small fender for our motors' wires to fit through. Our presentation is linked below.
On October 03, 2018: -> Following up with the projects, we met with our mentor to narrow down the motor that we are going to use for Makers Faire. Specification: - Motor type: M12500 - 3A by MAC motor - Brushless DC hub motor - Rated Power: 600 - 1000 [W] - Rated Voltage: 36 [V] / 48 [V] - Speed: 2000 - 4000 [RPM] We are currently keeping in contact with MAC motor for more detail information, such as: - Customizing planetary gearbox - Exact dimensions of the motor - Possibly customizing shaft design and length -> We spoke with the control team to discuss KBL controller for controlling the motor speed. KBL controllers are a device that sees voltage and converts that into motor speed. -> We spoke with our mentor about our concern about the motor overheating while running at 2 miles per hour for few minutes during Makers Faire. We believed that in order for the bogie to run at 2 miles per hour, our motor has to run at a low RPM. However, according to the specs
The motor casings and the new shaft came in. We tested the controls with the casings on one motor with the shaft attached and it was able to move just fine. However, we're worried that the torque caused by the friction between the wheel and the ground will cause the shaft to loosen up and unscrew itself from the motor. We talked to Professor Furman, and we came to the conclusion that adding two screws to the bogie on either end of a lock washer that came with the motor will be enough to absorb the torque and keep the shaft from unthreading.
On 10/01: Team members met in person in the library to work on: The team blog Discuss future plans of the project Work on motor requirements for other groups Discussing motor options for bogie Future plans execution: Gather information of desired motor specs Finding sponsors to fund the motor Place order in for hub motor Decide on the motor (6 hub motors) Redesign the housing of the motor to fit better on the bogie Finalize on designs. Assembly and Manufacture. Finalize products on the bogie Makers Faire
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