RPS Rotation Speed Chart

Overview
The Rotation Speed Chart is a method created by Motorex to determine engine speed. Originally created in 1899, this chart established the base of how plane turbines would be measured. The average motor speed was considered to be 120 RPS. Going lower than 50 RPS poses danger to the machine as it can fall out of the sky; going over 240 RPS is dangerous due to the Rotary Effect. The chart is stable to the level four, meaning that it is most likely to be correct.

History
This chart was first used in the year 1900, to help the production of the Spin-1 engine. Later, in the year 1940, it was used to measure and test the Spin-2 engine. It is still in use to this day.