SCHEDULE

Design

The full schedule for this project can be found in Appendix E. The schedule is separated by month and has approximate deadlines for when each section should be finished by. The most important deadline however will be the testing day in spring, of which the date is unknown. This is due to not knowing if the event will be in person or virtual. All designs for the differential will be done by November 15th. Any other components that need be design will be completed before this date as well. After this point, any alterations made to designs will be listed as changes to the existing drawings. Parts that will be purchased overseas need to be thought about and purchased much in advance as to not get set back because of shipping times. It is estimated that around 85 hours will be spent for the design portion of this project. There have already been a few setbacks, for example a gear assembly was drawn in ANSI inch instead of mm and the whole assembly had to be redrawn. This leads to a projection of around 250 hours spent throughout the entire school year.

Construction

The construction portion of this project occurs during winter quarter roughly between the months of January and march. This is the manufacturing and assembling stage of the project. During the printing of the differential housing and top cover, some issues arose. It became clear that tolerances were not calculated for properly spacing wise, so a redesign and reprint were in order. The gears would mesh with each other, but they would hit the very thin wall on the inside of the cover which could not be cut away due to it being 1mm thick. This, along with COVID setting the schedule back two weeks already, set the assembly of this part back just one week. This was not a big deal since other group members are still manufacturing parts. A deadline set for full assembly of the car is February 12th. This timeframe will give the team enough time to make changes if needed and/or redesign if a part does not fit. Full working machine will be completed and ready for testing by the end of February at least. An average of 73 hours has already been spent on this project and it is projected that another 20-30 will be spent this quarter alone on the assembly.

Testing

The testing section can be found in section 4 and 6c of the projects report. Testing will take place between January and April of 2021 concluding before April 30th as that is the day the posters are due to be submitted to Source. The competition putting all of the tests, to the test, will occur on April 23rd of 2021 at noon. This means that all first round testing should be completed by the start of the competition, leaving a week after the competition to retest if there were failures. The image below is showing the current updated schedule for all aspects of the project including testing.

Budget

The budget for this project can be found below this text. It outlines the basic breakdown of parts needed by price and quantity. Some of the most taxing parts will be the motor and bearings. The motor is expensive because the team wanted to go with a brushless model to maximize power and efficiency potential. The bearings are an example of a part that is going to cost a lot due to the quantity needed. There will be at least 14 bearings if not more and each come in a pack of two at 4 dollars. The full budget estimate is exactly $170.00; however, some breathing room is needed just incase a problem arises. The full budget is broken down as such: $200 will be dedicated for parts alone, $100 for material needed such as wood or 3D printing material, lastly a $50 cushion incase a part breaks or has to be shipped from out of country. This leaves the total estimated cost for parts, labor and materials to be $350.