Our Final Design with our Design Team.
Design Brief.
Gantt Chart.
Decision Matrix.
Brainstorming List.
Preliminary sketches.
Final Sketch.
building Process.
Our building process was smooth at the beginning. We were working together as a team very well. The first day went great, and we felt we had made a lot of progress. The second day, we came in and noticed some of our parts were missing, and we couldn't find some parts we needed. We eventually made some tweaks to the design, and made up for our losses. Overall, the second day went pretty well. We came in the next day with intentions to finish. We had noticed that we needed to redesign again since more parts had been taken or replaced. It had come to about halfway through the class when we realized that we needed a lot more time. Later on during the class, Mrs. Harlan told everyone that we would be allowed one more day. We packed everything up and made a game plan for our final build day. We came in the next day and started to work, but nothing went as smoothly as planned. Eventually, we decided we were going to have to wrap up, and present what we had, even though we did not have the proper design that we had planned.
Final Design.
Final Calculations.
Gear Ratio: 75out/36in = 2.08
IMA of the main sprocket system = 2
IMA of the lever = 3in-8 1/2 in = .35
IMA of the main sprocket system = 2
IMA of the lever = 3in-8 1/2 in = .35
Conclusion Questions.
I believe the gear ratio was the easiest to calculate. The formula is pretty simple, and there is not much that you have to calculate, as its pretty much just plugging in numbers.
I think it was the hardest to calculate the lever mechanical advantage. It was not easy to measure each of them, so that was probably the most challenging.
I would estimate about 15 pounds of effort force. This is so because in one hand you are holding the machine, and the other you are providing the effort, so you are trying to keep the machine stable, but also provide a lot of effort. The gears are not very easy to turn, so we have to add more effort for that reason as well.
I believe we would have to have gears that fit better. Our gears that we were going to use didn't fit very well, so we couldn't get enough torque input to have a sufficient output force.
I think it was the hardest to calculate the lever mechanical advantage. It was not easy to measure each of them, so that was probably the most challenging.
I would estimate about 15 pounds of effort force. This is so because in one hand you are holding the machine, and the other you are providing the effort, so you are trying to keep the machine stable, but also provide a lot of effort. The gears are not very easy to turn, so we have to add more effort for that reason as well.
I believe we would have to have gears that fit better. Our gears that we were going to use didn't fit very well, so we couldn't get enough torque input to have a sufficient output force.