I am convinced that the ball has no influence on the randomness of the outcome. This is the basis require ment of every roulette authority, else the roulette is not certificated.

I agree with you to a point dobbelsteen. The randomness of roulette lies mainly in the layout of the numbers around the wheel and this is amplified by the diamonds that deflect the ball off its trajectory. This is further influenced by the dividers between the numbers that deflect the ball to a degree due to opposite direction of travel. The depth of the pockets where the ball comes to final rest also has an influence on the ball. The deeper the pocket, the more predictable the landing.

Now with all of the above the finale resting place of the ball will not be the same with different size, density, weight etc of the ball but as you stated it will remain random.

MrPerfect is right by identifying the characteristics of the ball to foresee behaviour and thus predict outcomes to a close proximity of the final result. If the characteristics of the ball are not taken into consideration then vb would be nothing more than blind science.

I'm amazed that so few people look to ball behaviour to strengthen their game play. Here is something to think about...

Replace the diamonds and number dividers with firm rubber. Now replace the ball with a standard glass marble that kids play with. Play roulette and observe the outcomes. The results will be random for sure and will be predictable once the basic characteristics of the marble are calculated into the process.