Problem Statment

Design a cart that is safe, resilient, low-cost, low-weight, and user-friendly. The cart will be resilient by being strong and durable that can perform in multiple environments, extreme temperatures, absorbs impact and safely clears the ground. It will be user friendly by having free spinning wheels and will have a safe and efficient way to slow down and stop the cart. It will be light weight enough to be easily lifted, transported and collapsible. It will be safe enough for the riders, the dogs, and the bystanders. It will be single operant and be able to hold 2 average-weight people while being able to travel at speeds up to 30 mph.

Wednesday, October 23, 2013

Moving forward

This week was very informative as we conducted analysis on our spindle/axel set up. Further test will be done to confirm our results.
As we move forward, completion of the rear wheel assembly is needed in order to finish welding the base of our frame. 
Below is an image of a new bracket needed to complete this design.


Wednesday, October 16, 2013

Updated Gantt Chart


Welding Setback

This week, the team was set back on welding due to design. A few of the cart's components must be redesigned in order to continue welding:
  • spindle
  • suspension arms (possibly)
  • reinforcement of front wheel (new design)
To-do:
Finalize design for mentioned components and run through our machinists (Mike and Joe) in order to proceed with welding.


Thursday, October 10, 2013

Lauren the Machinist

Today, we have a special entry, as our team member Lauren learns how to use a mill.

Monday, October 7, 2013

Frame Material Purchased

With a completed cut plan, material(Aluminum 6061-T6) was ordered and cutting began almost immediately.



To do:
Prepare the aluminum by Wednesday and begin welding late this week, possibly Monday (10/14/13)

Wednesday, October 2, 2013

Bottom Frame Static Analysis

 
With the bottom frame finalized, static analysis was done to simulate a pulling force of 500 pounds.
The analysis produced the following results.

 

 
To do:
Further analysis will be on suspension
Create caliper mounting bracket if needed.
Buy material to begin welding frame.

Tuesday, October 1, 2013

Spindle Assembly

With the purchase of the disc brakes and calipers, the team encountered problems with the caliper's mounting bracket. A solution was proposed that would allow the mounting bracket to be attached to the entire frame via the designed spindle assembly.