Compound Machine
Goal: Design, create and test a compound machine then find the efficiency.
Constraints: Use at least 3 simple machines, must function for something, and our own constraint, must be a low efficiency.
Brainstorming:
At first we had many ideas of different machines. My partner Luis wanted to try making a bicycle but as he began drawing it he figured out that some of the materials he would need would not be provided. My partner Angel wanted to make a simpler machine without the added inclined plane and pulley. I, myself wanted to add a second class lever to the compound machine design. In the end we each put in an idea of what we wanted and came up with this product.
These are all pictures of the final product.
This is the final product that my team and I came up with. The different machines it uses are as follow, the wheel and axle, the pulley, inclined plane, and compound gear train. The input is the sprocket with the chain by itself. The output is the sprocket on the end connected to the chain which is also connected to the opposite sprocket on the other side. When the machine starts moving, it moves the wheel and axle which is connected to a pulley that moves a 100 gram weight up and down the inclined plane with a slope length of 20cm. The efficiency is really low meaning its extremely easy to turn the input gear but takes forever to move the 100g. weight up and down because of the low 5.667 Gear ratio that drives the wheel and axle.
Calculations:
Total IMA: 47.913
Total AMA: 1.600
Total Efficiency: 3.34%
Total AMA: 1.600
Total Efficiency: 3.34%
Simple Gear Train:
This is the simple gear train, there are many different ways to calculate it. The input is the big gear, and the output is the small gear. Here is a picture of all the different calculations.
To calculate for this simple gear train I'm going to take the number of teeth to find the gear ratio.
GR/1 is the same as Nout/Nin so 89/60=1.48 = 36/1.48 = 24.32
GR=24.31/1
GR/1 is the same as Nout/Nin so 89/60=1.48 = 36/1.48 = 24.32
GR=24.31/1