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Our goal is to provide a reliable form of transportation to a young man with ASD and Tourettes. We hope to provide a tricycle with all the customizations and requests made by the customer.
To provide reliable transportation by constructing a very durable, reliable tricycle with the customizations listed below.
Customer Requests:
– Adjustable Back Rest
– Modified Basket for storage
– Some sort of Light that can be used in the evening
– Speedometer
– Water bottle holder
– Color: Grey, Black, and Red
– Look like an adult tricycle
Technical Specifications:
– Lightweight (so it can easily be carried upstairs to customer’s apartment)
– Simple and not frustrating for the user
– Durable, easily ridden for several miles as a mode of transportation
– Stable
– Made for a rider of 140-170lbs
– Collapsable Bike Frame
– Adult tricycles
– Place of Storage
For the first part of the problem, we need to make the trike stationary. The best way to do so is to make a bike roller. The hardest part for bike rollers is balance, but since we have a trike, this will not be a problem. We will make this lightweight so it can be stored easily and pulled out as needed.
For design 2, we wanted to keep the trike in one piece, but still maximize maneuverability. This led to a front wheel that folds into the frame so that it can be pulled up or pushed down the stairs.
After reevaluating the need of the customer, the best way forward is to design a dependable tricycle that he can use solely for transportation. He has been provided with a piece of equipment to use at home to build up endurance, so our goal is to provide him with a tricycle that is tricked out with the different requests that he had.
We are going to be customizing a tricycle, so that it includes the following:
– Light bar
– Removable back rest (to aid in riding comfortably at long distances
– Waterproof Pelican Case
– Odometer
– Bike Air Pump
– Water Bottle Holder
– Sleek Minimal Adult Design removing childish features or looks on trike
Construction Plan:
Based on our decision matrix, we think design 3 is the best concept for the overall tricycle design.
Analysis 1 analyzes the light bar and its source of power. Depending on the time of day he is riding, he could be riding in the dark so a light source would be necessary. To ensure that this light will last, we analyzed how long each charge would last, how long each trip to work would last, and the longevity of the battery sources being recharged.
Analysis 2 analyzes the axel that connects the two rear wheels. I had to assume a few things about the trike like the weight, material, and some dimensions because we do not have the trike and the information was not on the website. This analysis shows the forces and stresses that act on the rear axel.
Analysis 3 was concerned with the overall strength of the light bar mount and its ability to support the light bar. We will most likely use PETG filament to print the mounting brackets, so this analysis calculated the strength of the filament if the screw stripped first, which would be where it failed first.
