Di Roulette Wheel
Thirty-seven pockets, red and black one afta di oda, arranged so dat no part of di rim dey “high” or “low”.

Di European wheel carry 0 to 36 for one fixed order wey dey spread colours, odd and even, and big and small numbers evenly round di rim.
Point at one sector or tap am to see im numbers.
How roulette wheel dey work?
Casino roulette wheel na one bowlequipmentBowlDi outer part of di wheel wey no dey move: di wooden or composite rim wey hold di ball track and di apron, and di rotor dey spin inside am.Read di whole tin → wey wide about 80 cm, wey dem set inside di table. Di outer rim carry di ball trackequipmentBall trackDi groove for di rim wey di ball dey run inside before e slow down and fall. Dem also dey call am: upper track.Read di whole tin →, one shallow groove wey di ballequipmentBallDi small ball wey dem dey throw for di track against di rotor. Modern balls na ivorine or Teflon, 18–21 mm.Read di whole tin → dey run inside. Under di track, di bowl dey slope go inside across di apronequipmentApronDi part wey slope between di ball track and di pockets, where di deflectors dey.Read di whole tin →, wey carry eight metal deflectorsequipmentDeflectorOne of di metal tins for di apron wey dey scatter di ball as e dey fall. Dem also dey call am: canoe, diamond, pin.Read di whole tin →, four wey stand and four wey lie down, wey dem dey call canoes or diamonds. For di centre, di rotorequipmentRotorDi part of di wheel wey dey spin and carry di pockets.Read di whole tin → dey: di disc wey dey spin and wey hold di 37 pocketsequipmentPocketOne of di 37 small boxes wey get number for di rotor. Dem also dey call am: slot, cup.Read di whole tin → wey get numbers, wey metal dividers wey dem dey call fretsequipmentFretDi metal wey divide two pockets for di wheel.Read di whole tin → separate. One turret for di middle dey give di dealer sometin to hold when e dey spin am.
Dem dey launch di ball against di direction of di rotor, so di two dey move for opposite directions. E go round di track ten to twenty times, slow down, drop cross di apron, usually hit one deflector, bounce cross di frets and settle.
How many numbers dey for roulette wheel? 37, for one fixed order
Di European order of di numbers for di roulette wheel, clockwise from zerowheelZeroDi one green pocket wey no even-money, dozen or column bet dey cover; na im be di source of di house edge. Dem also dey call am: single zero, 0.Read di whole tin →: 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. Di order look random but e no be random. RedbetRedEven-money bet on di 18 red numbers. For French: rouge.Read di whole tin → and blackbetBlackEven-money bet for di 18 black numbers. For French: noir.Read di whole tin → dey follow each oda strictly. High and low numbers dey follow each oda as far as 37 pockets allow. Dem mix odd and even so dat no part of di rim dey favour any of dem. Numbers wey follow each oda for counting no dey ever sit side by side.
- Colours dey follow each oda all di way round: red, black, red, black, with zero green.
- Each pair of pockets wey dey di same distance for di left and right of zero, dem both na high or dem both na low.
- No two numbers wey follow each oda for counting dey touch: 32 dey sit between 0 and 15, and 33 dey sixteen pockets far. Dat one no be accident of di design, na di design be dat.
Why di order of numbers for roulette wheel matter
NeighboursbetNeighboursOne number and di two pockets for each side of am for di wheel, five straight-up chips.Read di whole tin → for di table no be neighbours for di wheel. 17 dey sit between 25 and 34 for di rim and e no near 16 and 18 at all. So cornerbetCornerFour numbers wey share one corner for di layout, e dey pay 8:1.Read di whole tin → bet for 16-17-19-20 dey cover four pockets wey scatter round di wheel, while “17 and di neighbours” dey cover one arc of five. SectorwheelSectorPockets wey follow each oda for one arc of di wheel, no be group for di layout.Read di whole tin → bets (voisins du zéroFR · sectorVoisins du zéro“Neighbours of zero”: di seventeen numbers from 22 to 25 for di wheel, wey you bet with nine chips.Read di whole tin →, tiers du cylindreFR · sectorTiers du cylindre“One third of di wheel”: di twelve numbers wey dey opposite zero, from 27 to 33 for di wheel, wey you bet with six splits.Read di whole tin →, orphelinsFR · sectorOrphelins“Orphans”: di eight numbers wey voisins and tiers leave: 17, 34, 6 and 1, 20, 14, 31, 9.Read di whole tin →) dey follow position for di wheel, and player wey dey hunt wheel bias dey care about arcs, no be about groups for di layoutequipmentLayoutDi betting grid wey dem print for di table. Dem also dey call am: table, felt, cloth.Read di whole tin →. For di layout, di pattern of one bet dey tell you im payoutmoniPayoutWetin bet wey win dey return, wey dem dey quote as “X to 1” on top di stake wey dem return.Read di whole tin →; for di wheel, e no dey tell you anytin about di odds but e dey tell you everytin about di physics.
Dem design am to dey fair
Di companies wey dey make am dey balance di rotor of every roulette wheel wey casino install with small weights, like car tyre, reach small part of one gram. Dem dey cut di pockets from one single piece so dat no pocket fit deep pass di ones wey near am. Frets dey low and sometimes dem bend, so dat di ball no go settle in a way wey person fit predict. Casinos dey level di bowl with spirit level and dem dey change rotors between bowls, so dat any defect wey show no go fit tie to one table. Dem dey build and maintain roulette wheels like dis becos of di players for di page of players wey popular: bias dey real, pipo don use am, and now engineers don remove am.

Di American wheel, short
Di American wheel get 38 pockets with 0 and 00 wey face each oda, and different order: 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. Numbers wey follow each oda for counting dey sit directly opposite each oda. Call betstableCall betBet wey you announce give di dealer instead of to put am with your hand, usually bet on one sector of di wheel like voisins or tiers. Dem also dey call am “announced bet”.Read di whole tin → like voisins no dey for am, becos di sectors wey dem describe no dey. Everytin else about di equipment na di same.
Expected Value for Call BetsAmerican Roulette: Di Wheel and Di Rules
How to read wheel from video
For live stream, you fit see di direction of di rotor, estimate im speed by timing di zero pocket as e pass one fixed point, and count how many times di ball go round. No one of dat one dey change your odds; all of am na good practice for di Lab pages, wey dey explain wetin e go take to turn dose observations into edge and why studios dey make sure sey you no fit.
Questions wey pipo dey ask
Dealers dey change am one afta di oda or dem dey follow house rules; di ball always dey go di oda way. Direction no get any effect on di odds.
So dat e no go belong to any colour bet. Early wheels use oda colours; green become standard for di 19th century.
Few grams. Modern balls na ivorine or Teflon, 18 to 21 mm wide. Light balls dey bounce more.
Live-dealer wheels dey real and dem dey film dem. RNG tables dey draw di number with software and show wheel animation for show.
Small laugh

Neighbours for di table no be neighbours for di wheel.
Sources
- Ethier, S. N. The Doctrine of Chances: Probabilistic Aspects of Gambling.
- Small, M. & Tse, C. K. “Predicting the outcome of roulette.”
- Barnhart, R. T. Beating the Wheel.