Sprint Car Front Hub Balancer for Dynamic Tire Balance
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Solution Overview
Problem
Conventional balancing techniques and devices for racing car tires are inadequate in maintaining balance during races due to weight shifts caused by acceleration, braking, and cornering, and are impractical for quick adjustments during competitions.
Innovation Solution
A balancer hub assembly for racing cars that includes a hub, cap, ball bearing pellets, and oil, which forms a chamber sealed by O-rings, allowing the pellets to redistribute weight for balanced tire operation, and can be easily installed and reused across different racing cars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wheel weights are used for tire balancing, then initial tire balance is achieved, but the balance cannot be maintained during race due to weight transfer from acceleration, braking, and cornering
Solution Approach 1:
The patent employs dynamic balancing elements (ball bearings and oil) that can move and redistribute themselves in response to changing weight conditions during racing. This allows the balancing system to adapt dynamically to weight transfers from acceleration, braking, and cornering, rather than relying on fixed wheel weights
Solution Approach 2:
The balancing system is self-adjusting through the movement of ball bearings and oil within the hub assembly. The system automatically redistributes mass to counterbalance weight shifts without requiring external intervention or manual adjustment during the race
2Reliability
If conventional balancing devices are used, then tire balance can be adjusted, but the installation process is lengthy and impractical during races
Solution Approach 1:
The balancing system is merged with the wheel hub assembly itself, integrating the balancing mechanism directly into the existing wheel structure. This eliminates the need for separate balancing devices and allows for quick installation by simply mounting the entire hub assembly onto the wheel
Solution Approach 2:
The balancing elements (ball bearings and oil) are pre-positioned within the hub assembly during manufacturing, but the entire assembly can be quickly installed and removed during races. The preliminary setup is done once, and then the system provides continuous automatic adjustment without requiring repeated installation operations
3Reliability
If fixed wheel weights are installed for tire balancing, then initial balance is achieved, but the system cannot adapt to fuel consumption and center of gravity shifts during the race
Solution Approach 1:
The balancing system uses dynamic elements (ball bearings and oil) that can move and redistribute mass in response to changing center of gravity conditions. As fuel is consumed and the center of gravity shifts, the ball bearings automatically reposition to maintain balance, providing continuous adaptation throughout the race
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The assembly maintains tire balance, improves performance, reduces fuel consumption, extends tire life, and prevents suspension failure by dynamically adjusting to weight shifts during races.
Implementation Method 1
The plurality of ball bearing (BB) pellets can include a tungsten material. In some cases, a total weight of the plurality of ball bearing (BB) pellets can be between about 0.8 pounds and about 1.1 pound.
Implementation Method 2
tire balance may change during a race due to weight transfer caused by acceleration, braking, and cornering
Data Source
AI summary
A balancer hub assembly for a sprint car. The balancer hub assembly includes an hub having a groove; a cap having a groove and removably couplable to the hub. The groove of the hub and the groove of the cap form a chamber when the hub and the cap are coupled to each other. The balancer hub assembly can include a plurality of ball bearing (BB) pellets and oil positioned inside the chamber.