I have analysed some roulette spins with sony vegas in order to get the time for each turn of the ball. It is supposed that if the time that takes for the ball to complete a turn is higher, it means that its velocity is faster and thus the time at which it will fall off from the rim will be lower too. For instance, let's say that the ball completes a turn in 0,5 seconds. Thus, it is supposed to be faster than when the ball completes the turn in 0,6s. Hence, the former is supposed to last more time in falling into the wheel than the 2nd. For instance, the 1st should last.. let's say.. 22s. and the 2nd 20s. That would be the normal. However in the spins that I have analyzed (from several roulettes) I always get weird results. Some "turn-times" are lower than others, and their final times are also lower than those of the other lower turn times. I mean, it is like if the time turn of 0.6s lasted more time in falling than the turn-time of 0.5s. Which wouldn't make sense. Due to this and other strange things (some "turn-times" which are quite different, have the same or similar final times) I do not see that there is any nonlinear relationship or that it follows any kind of function. I have been reading on internet some papers and articles and, it seems that if there is any kind of inclination, no matter how small that angle is, there are zones of the roulette in which the ball will fall and it would lead to biases. I do not know if it could be related to the outcomes that I have obtained. What do you think? Thank you all for your help!