I did an experiment in which I varied the starting angle of elevation of a gyroscope. I noticed that at 45 degrees, the precessional period (amount of time to perform one spin) is the lowest, while at 0 degrees and 75 degrees, the precessional period is higher. If I plotted this on a graph, it looks somewhat like half a sinusoidal curve, with 45 degrees being the minimum. Keep in mind that the starting angular frequency of the rotor/wheel in the gyroscope is always the same in the beginning. I just want to know why a gyroscope tends to spin faster at 45 degrees.