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If in 10,000 roulette wheel turns there will be a very small bias of a few percents deviation the player will not be able to use this information to plan his bets. However, if in most of the wheel turns the ball falls in a specific region of the wheel, the informed player will be able to plan how to bet and win real money at the roulette.
The frets are the pocket separators. If they become loose, they can absorb impact better than other pockets.
Minor scratches on the pocket surface (barely visible to the naked eye
An unbiased wheel will spin with smooth rotations and a constant deceleration. In particularly on a clearly tilted wheel or any similar condition where the ball has a common drop point, this effect will almost certainly lead to a sector bias because there will be a dominant wheel orientation in relation to the common ball drop point.
This is where the actual rotor is on a slight angle compared to the earth gravity, meaning one side of the rotor is even a fraction of a millimeter lower than the facing side. Due to gravity, the ball will tend to fall on the lower side of the wheel. Wheel wobble is relatively easy to observe, even without spin list collection.
Balls made of ivory are never perfectly round. The less perfect they are, the more likely they are to be affected by ball track defects such as cracks and track deformation.
Two pockets are never exactly the same size. The larger the pocket, the more likely the ball will fall and rest in that pocket.
Many factors such as tilt can lead to common ball drop points. Not always are they relevant to wheel bias, but in the case of uneven wheel deceleration, common drop points are required for a sector bias to develop.
On most wheels, the ivory little ball will tend to hit more frequently one specific diamond placed around the wheel.
Check this for yourself at any casino by creating a chart like this:
Download and print a new Diamond chart for your analysis
At the very least, you will find there are some diamonds that the ball almost never hits, or perhaps some areas where the ball almost never falls from the ball track. This is not random and inevitably leads to more predictable spin results. Now that we know WHERE the ball will fall at least an inordinate amount of times, what if we knew what number was under this area WHEN the ball fell? This is easy to determine, and use for your predictions.
Suppose you can predict the pocket in which the ball will fall, even if your prediction is not 100% exact, you can place your bets around the specific pocket you believe will win. In this situation, your edge over the casino would be very high.
Look at this 5 minutes clip where the player bets very close to the pocket in which the ball will eventually fall.
How can he predict the exact or very close winning number?
His prediction is based on long observation of this specific roulette wheel.
First, they run the roulette about 60 times and wrote all the results on an excel sheet. Then, they copied the roulette wheel layout to the excel sheet and made the comparison to see if some numbers areas occurred more than others.
Base on the results of this excel sheet, they started a long analysis from which they learned the exact bias of this specific roulette wheel.
It takes a very long time to check every roulette wheel and it might be that at the end of your analysis you won't find a significant bias of the wheel, enough to play at this table and be able to predict the numbers. Then you will have to check another wheel at a roulette table in this casino or maybe at another one.
During this time the dealers and the pit boss will start to ask you about your research.
You can download Pattern Detector Software (Zip file 3.57MB) from Roulettephysics.com here. It will help you to find your biased roulette wheel.
If you follow this method and finally find a roulette wheel with a significant bias, then you will start to play at this table all day long, betting on all the numbers around the pocket with the positive deviation.
Suppose the deviation of the wheel is around the number 27 red. Let's look at the layout of the roulette wheel on both sides of the number 27 red.
0-32-15-19-4-21-2-25-17-34-6-27-13-36-11-30-8-23-10-5-24
If you can predict that the white ball will fall on the 27 red or at least around this number, you will bet on all the numbers on both sides of the 27 red:
17-34-6-27-13-36-11
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