The Wells Pendulum System, also called the Swing Betting System, is an old roulette strategy.
It was developed by the famous gambler Charles Wells in 1891. Wells, known as “The Man Who Broke the Bank at Monte Carlo,” created this progression approach for even-money bets. These include Red/Black, Odd/Even, and High/Low.
This classic strategy is based on the “law of equilibrium.” It uses a swinging pendulum idea. It aims to profit from natural balance over time. While no system can fully remove the house edge, the Wells Pendulum is popular with Australian players.
It offers a structured, moderate-risk approach to European or French roulette.
How the Wells Pendulum (Swing Betting) System Works
The core theory suggests that even-money outcomes act like a pendulum. In a perfect world, Red and Black would hit equally. In reality, one side often dominates for a short streak. Swing betting tracks this “imbalance” and bets on the eventual correction.
The Mechanics of the Swing
Track the Imbalance: Keep a running score of the difference between outcomes. For example, if Black has hit 8 times and Red 4 times, Black is “+4.”
The Scoring Logic:
If the leading side (Black) hits again → Score moves to +5.
If the trailing side (Red) hits → Score decreases to +3.
Betting Strategy: Place your wagers on the side that is currently “behind.” That is the direction the pendulum must swing to regain balance.
Original Betting Rules (High Bankroll)
Recommended Bankroll: 145 Units.
Base Bet: 10 Units.
Progression: Like the D’Alembert system, you raise your bet by 1 unit after a loss. You lower it by 1 unit after a win. This “gentle” progression aims to recover losses gradually without the exponential risk of a Martingale.
Modified Pendulum System (Safer Aussie Version)
Modern players in Australian online casinos often prefer a lower-risk version of this strategy. This modified approach reduces the bankroll requirement and emphasizes capital preservation.
Starting Bankroll: 45 Units.
Base Bet: 5 Units.
The Goal: Aim for a “mini-swing” of 5 consecutive wins.
The Step-Down: After the 5th win, lower your stakes step by step (4 units → 3 → 2 → 1).
This helps lock in profits and keeps you in the game if the streak continues.
Pros and Cons of Swing Betting in Roulette
| Pros | Cons |
| Structured Logic: Tracks real deviations rather than guessing. | House Edge: Cannot overcome the math of the green zero. |
| Low Volatility: Safer than the aggressive Martingale system. | Patience Required: Requires meticulous scorekeeping. |
| Ideal for Euro/French Wheels: Maximizes odds on single-zero tables. | Losing Streaks: A “cold” swing can still drain a bankroll. |
Top Roulette Betting Strategies Compared
If the Pendulum System doesn’t fit your playstyle, consider these popular alternatives used by Australian punters:
Martingale System: High-risk; double your bet after every loss.
Paroli System: Positive progression; double your bet after wins to ride hot streaks.
D’Alembert System: The “gentle” cousin of the Pendulum; add 1 unit on a loss, subtract 1 on a win.
James Bond Strategy: A flat-betting system covering 25 of the 37 numbers on a European wheel.
Maximize Your Odds at Australian Online Casinos
To give your strategy the best chance of success, always choose the right table:
European Roulette: Features a single zero, offering a house edge of 2.7%.
French Roulette: Includes the La Partage or En Prison rules. These return half your stake on even-money bets if the ball lands on zero, cutting the house edge to a low 1.35%.
Play Responsibly: No matter which system you use, roulette is a game of chance. Set a strict budget, use practice modes before playing for real money, and always play at reputable, licensed sites.
