How Many Spots On A Roulette Wheel

Posted : admin On 4/6/2022
  • When Jarecki showed up to a casino, large crowds would gather to witness the master at work. Many would mirror his every move, placing small bets on the same numbers. In a bid to outfox Jarecki, casino owners rearranged his favorite roulette wheels in different spots every night.
  • Roulette is a game of chance. It uses a spinning wheel with either 37 or 38 numbered pockets. The roulette casino wheel is spun one way and a ball is sent round the other way. Before the wheel is turned, players bet on where the ball will land. There are lots of different ways to do this, and the chances of winning and the payouts vary.
  • The difference in these two wheels arises because of the numbers on a roulette wheel. While the American Roulette wheel has 38 slots, the European Roulette has 37 slots. This difference is further attributed to the 00 present in the American Roulette wheel. Consequently, the American Roulette has a higher house edge than the European roulette.

In order to spot a possible wheel bias, since we don’t own them to make physical measures, we have to recur to statistical analysis of its behavior, and here we really have to use Mathematics. It is necessary to investigate if a roulette wheel does have a behavior which deviates from the expected for a perfect machine, and in order to achieve.

If we’d look back at the whole history of roulette, we might see how many people have tried to find unconventional ways to win the game. Some were pretty illegal, like slipping the bet after the stop of the wheel or somehow controlling the ball or bribing a complacent croupier. But only one method was really successful, spotting a biased roulette wheel.

Finding a bias is like finding the goose that lays the golden eggs. And often players who knew what to look for were able to take advantage of a manufacturing error of the wheel to win big before the casino could realize what had happened. The best thing is that it is not cheating at all. Spotting a bias is somehow considered a skill and you can keep all your winnings. The most famous case is probably that of Joseph Jaggers, a British man who was able to win the today’s equivalent of $5 million on a biased roulette wheel at the casino of Monte Carlo in 1873.

Nowadays it is almost impossible to find a biased wheel due to technology advancement in manufacturing techniques, but it is good to know that a chance actually exists. For instance it may occur when a wheel is not maintained properly and dirt or scratches modify the behaviour of the roll of the ball.

How can you discover a biased Roulette wheel?

That’s indeed not simple. It may take very long time as you must be ready to track the results of the wheel, accurately marking down thousands of spins without arousing too much attention ( you may want to use a lot of our scorecards for this 🙂 ), trying to find patterns that do not seem completely random, analyse variation, etc. If you can do that and spot the bias before the casino management does, huge money can be done. It is probably a lifetime opportunity, so do not waste it!

For the European roulette, a single number wins 1⁄37 and loses 36⁄37. It’s easy to find out that the fair odds for a single number bet is 2.7% ( 1/37 = 0.027 ). It is also possible to know what the edge for the casino is – still 2.7% ( −1×36⁄37 + 35×1/37 = −0.0270 ). Therefore any bias moving the odds on a given number just a bit, maybe to 3%, will turn the edge for the casino into an edge for the player. The kind of advantage any gambler dreams of in his life.

Can even an online roulette have a bias?

The online roulette is completely governed by the rules of statistics. There are no mechanical parts, no air, no friction, no humidity, no croupier that can affect the outcome. Numbers are generated through a RNG (random number generator) processor, probability (i.e. that 2.7% I mentioned before) is hard coded and only a fault in the software can hypothetically generate a bias, that is highly unlikely. If you have ever heard of such a fault it is way more likely that the online casino ownership has voluntarily decided to modify the odds for marketing purposes and create some buzz around its loose roulette. I think you’ll never hear something like this happening in a big and trusted online casino, where rules are very strict and the RNG gets audits and inspections to guarantee fairness.

What we’re going to do here is take a detailed look at the roulette wheel and table for European, American and French roulette. We will start out with a brief look at the history and then get into some detailed diagrams and descriptions for each version of the game.

We will then get into various manufacturers and design differences, before rounding off with our opinion on the bold claims you read online about roulette wheels being predictable and easily beaten.

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Brief History of the Roulette Wheel

According to a French novel called “La Roulette”, the game has been played as it’s known today since 1796. These early games included both a 0 and 00.

The earliest form of a roulette wheel dates all the way back to the 1600’s from a French mathematician called Blaise Pascal, pictured right.

He inadvertently created a roulette wheel in his quest to create a perpetual motion machine. In simple terms, he wanted to create a wheel that could spin on its own indefinitely without an energy source. He failed in this endeavour.

It was roughly in the 1860’s when the Monte Carlo casino began offering a single 0 roulette wheel and this is the version of the game that spread across the world with the exception of the USA. American roulette games still retain the original concept of 0 and 00 slots to this day which increases the house advantage. More information on the house advantage can be found lower down.

European Roulette Wheel and Table

The most popular version of the game across the world, both online and in real casinos. One of the first things that you need to understand about roulette is that the table is not representative of the wheel. If you place a bet on the first Dozen, you are betting on numbers 1 through to 12 but those numbers are evenly spread across the wheel. Here’s the order of the numbers on a European roulette wheel starting with 0:

How To Read A Roulette Wheel

0 – 32 – 15 – 19 – 4 – 21 – 2 – 25 – 17 – 34 – 6 – 27 – 13 – 36 – 11 – 30 – 8 – 23 – 10 – 5 – 24 – 16 – 33 – 1 – 20 – 14 – 31 – 9 – 22 – 18 – 29 – 7 – 28 – 12 – 35 – 3 – 26

The order of numbers may appear random, but they’re purposely designed to confuse the player and conform to the golden rule that black and red numbers must alternate. From there, odd/even and 1-18/19-36 are evenly distributed across the wheel with no more than two numbers of the same type adjacent to each other on the wheel. In other words, at no point are there more than two consecutive odd numbers or two consecutive 1-18 numbers and so on.

How Many Spots On A Roulette Wheel

European Specific Bets

European roulette has 4 bet types that you won’t find in the American game known as Call or Announce bets. They’re named this way because in real casino conditions, the player will say the bet out loud and the dealer will place the bet for them.

The image to the right shows which numbers each of them covers. We’ve already discussed these bets in detail on our page on roulette bets but here are the descriptions again.

How Many Spots On A Roulette Wheel

Jeu 0 – One chip is placed on each of the following Splits: 0-3, 12-15, 32-35 and then the number 26 with a Straight Up bet. In total, 4 chips are placed and 7 numbers are covered.

Voisins du Zero – One chip is placed on the following Splits: 4-7, 12-15, 18-21, 19-22, 32-35. Then there are 2 chips on 0-2-3 Street and 2 chips on 25-26-28-29 Corner. In total, 9 chips are placed and 17 different numbers are covered.

Orphelins – One chip is placed on the following Splits: 6-9, 14-17, 17-20, 31-34 and then the number 1 with a Straight Up bet. In total, 5 chips are placed that cover 8 numbers (17 is covered twice).

Tiers du Cylindre – One chip is placed on the following Splits: 5-8, 10-11, 13-16, 23-24, 27-30, 33-36. In total, 6 chips are placed and 12 numbers are covered.

American Roulette Wheel and Table

The American version of the game features an extra slot but the payouts remain the same, pushing the house edge up to 5.26% from the 2.7% you get with the European game. When it comes to real casinos, you’ll only find this table in the USA, Canada and high end casinos in places like London.

What’s curious about the design of the American roulette wheel is that the numbers are in a completely different order to the European game while following the same design principles. Here’s the order of the numbers starting with the 0:

0 – 28 – 9 – 26 – 30 – 11 – 7 – 20 – 32 – 17 – 5 – 22 – 34 – 15 – 3 – 24 – 36 – 13 – 1 – 00 – 27 – 10 – 25 – 29 – 12 – 8 – 19 – 31 – 18 – 6 – 21 – 33 – 16 – 4 – 23 – 35 – 14 – 2

French Roulette Table

It’s also worth giving a quick mention to the French roulette table which you can see to the right. The wheel is exactly the same as the European game but the table has a different layout.

The biggest difference is that the Dozens are no longer marked as 1st 12, 2nd 12 and 3rd 12. Instead, they’re marked as P12, M12 and D12 which you will see in the bottom left and right corners of the table.

La partage rule – In terms of actual game play, the French game has the most advantageous rules because when the 0 hits, losing bets on Red/Black, Odd/Even and Low/High pay back half. So a £10 bet on Red would pay back £5 if the 0 hits.

En prison rule – In real casinos, they may opt to use the en prison rule instead of la partage. Every online game we’ve ever played has used la partage so you will only find en prison in real casinos. When the 0 hits, losing bets on Red/Black, Odd/Even and Low/High are marked as “en prison” by the croupier and neither win nor lose. Instead, they’re left on the table for the following spin and treated as any other bet.

Manufacturers and Design Differences

There are numerous manufactures of roulette wheels, each of which offer various designs and we aren’t talking about mere colours and textures. The major design difference between different wheels are the pockets. Each number has a pocket where the ball will eventually fall and the design around the pocket affects the bounce and scatter of the ball which impacts on the final result. Here are three different designs, click on them to see a larger version.

Huxley Stardust

The low fret design to the left is the most common design of wheel in real casinos. The low pockets allow the ball to bounce around from one pocket to another before finally losing momentum and coming to rest, resulting in unpredictability which is what the casinos obviously want.

The scalloped design has deeper pockets, resulting in less bounce and a slightly more predictable result so they are much rarer. The scalloped design could be described as “old and outdated” because most manufacturers have ceased making them. You aren’t likely to see one in a real casino.

The Huxley stardust design uses triangular pockets which can deflect the ball in either direction, creating even more unpredictability. For example, the ball can go from spinning anti clockwise around the track to going clockwise once it hits the rotor. Such movement is much less common on low fret and scalloped designs.

While there are many manufacturers of wheels, here are the two largest that we’re aware of:

TCS John Huxley – Their head office is based in London and they have offices around the world. They’ve won numerous industry awards for their craftsmanship of casino equipment and they supply casinos across the globe. Designing a new roulette wheel on their website is like designing a new car with multiple design and colour options available. Their website is www.tcsjohnhuxley.com

Cammegh – Another company based in the UK, Cammegh are a huge supplier to casinos across Europe and the USA. They have supplied roulette wheels to numerous huge casino brands including Caesars, Grosvenor, Gala and Ladbrokes. Their website is www.cammegh.com

Neither of these manufacturers have a “buy now” button on their website. Instead, you need to request a quote and the wheel will be built for you. You can expect the price of a new roulette wheel to be well over £1000. You can also buy them second hand on ebay which will cost roughly £400-£700 for a clean, undamaged, second hand model.

Roulette Wheels Can Be Beaten?

The majority of roulette systems are based on the table. This includes all of the mathematical strategies that we’ve written about. What this means is that they don’t influence the odds which stay at 2.7% and 5.26% respectively. They are based on progressions and in many cases, betting big to win small.

However, there are other systems, based on the wheel, that we haven’t written about. The aim of these systems, often called “visual ballistics” or “visual roulette system” is to forget about the table and focus entirely on the wheel by increasing the accuracy of predictions to get an edge over the casino.

Think of it this way: the house edge is 2.7% on European roulette. If you can increase the accuracy of your predictions enough to overcome this edge, the odds will be in your favour. The cheating (and in many cases illegal) way to do this is via a roulette computer which measures the speed of the wheel and ball to give a prediction. Visual systems work in much the same way, only they’re much less effective because you’re using your mind to make predictions.

How Many Spots On A Roulette Wheel

The reason we haven’t written about them is simple; we don’t know anywhere near enough about them to give an accurate description. They involve monitoring the diamonds (8 of them around the outside of the wheel) and then studying the wheel, learning its tendencies and being able to make a prediction accurate enough to overcome the edge. From there, you would bet on approximately half of the wheel via Straight Up bets to accommodate your prediction.

Real information about visual roulette systems is hard to come by which is why we’ve been unable to learn about them. We haven’t found a single website that’s written about visual roulette systems for free with simple instructions on how it all works with step by step instructions. It always comes with an asking price that we aren’t prepared to pay.

How Many Spots On A Roulette Wheel Of Fortune

Do we think it’s actually possible to predict the wheel without a computer? Yes, but we don’t believe its anywhere near as easy or practical as the websites that sell this information make out. It’s our belief that you would need to be very experienced in real casino conditions and well versed in the deceleration of the ball to even have a chance of making this work.

We also believe that a lot of the information sold online will be outdated and some of it will be nothing more than a scam. We aren’t prepared to buy all the rubbish information about visual systems to find the good one and that’s assuming a good one even exists. For all we know, they’re all scams.

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