Andymark 1.1 Compressor Data

[muffinofsteel]

My team just did some tests to compare the new 1.1 pump to the VIair pump and the larger Thomas pump and I thought it would be helpful to share it with the community. TL;DR The new 1.1 pump is the fastest at getting 3 574mL tanks from 80-120 psi by a significant margin(on average 7-11 seconds). Also Thermal Overload will be tested at a later date.

We set up our three compressors with fittings so that they could be hooked up to the same set of tubes and tanks by taking out only 1 tube end. We then would charge the air tanks to about 80 psi with the current compressor we are using, then stop to adjust the amount before starting the test. We would then start the compressor and time how long it took to reach 120 psi. We did this 5 times with each compressor, and each compressor had its own fully charged battery to use. We ran each trial one after another, meaning that the battery was only on full charge for the first trial of each experiment.
Now on to the data(please excuse the poor formatting)
Andymark 1.1
Trial 1 - 30.68 sec
Trial 2 - 26.02 sec
Trial 3 - 27.38 sec
Trial 4 - 27.83 sec
Trial 5 - 28.02 sec
Average - 27.99 sec
VIair 90C
Trial 1 - 42.35 sec
Trial 2 - 37.47 sec
Trial 3 - 38.82 sec
Trial 4 - 38.25 sec
Trial 5 - 38.90 sec
Average - 39.17 sec
Thomas
Trial 1 - 37.42 sec
Trial 2 - 34.82 sec
Trial 3 - 34.08 sec
Trial 4 - 35.82 sec
Trial 5 - 34.97 sec
Average - 35.42 sec

From this data, it is clear that the new Andymark 1.1 pump is the fastest to fill the tanks by a sizable margin. Even comparing the slowest fill from the Andymark pump to the fastest of the VIair and Thomas, it still comes out the fastest by about 2.5 seconds, and on average comes out at around 7-11 seconds faster than the other two.
Something rather interesting to note is that for every compressor, the first trial is significantly slower than the rest, which is odd. Another interesting trend is that the second trial seems to be the fastest, while subsequent trials tend to get slower as you continue. Maybe there is an optimum operating temperature for the compressors, but further testing would be required that is out of the scope that we are capable of doing.
Possible causes of error include using different batteries for each compressor, which may be at different stages of being able to hold a charge, and not having a fresh battery for every trial. I do believe that the significant difference in charging times makes the change that this would have caused minimal.
All in all, it seems clear that the new pump is superior to both older styles of compressors. Though it may weigh about a pound more than the VIair, it seems to make up for it in its output. The only thing that worries my team is the thermal overload tripping in the middle of the match. We will be doing another experiment to see how that works out and how it compares to the other two compressors in the near future.