Wheel Diameter Push Effort Reduction Factor Calculator
Declared rolling moment model with independently measured length coefficient and separate bearing drag; larger wheels do not reduce all force proportionally. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
Rolling resistance can be modeled using a resistance length divided by wheel radius.
Rolling resistance can be modeled using a resistance length divided by wheel radius.1
Increasing wheel diameter changes that component while the supplied bearing drag remains a separate contribution. Use this tool to calculate wheel Diameter Push Effort Reduction Factor from the supplied measurements and assumptions.
When to use Wheel Diameter Push Effort Reduction Factor Calculator
Use this tool to calculate wheel Diameter Push Effort Reduction Factor from the supplied measurements and assumptions. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
How to use Wheel Diameter Push Effort Reduction Factor Calculator and understand its results
- Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
- Enter originalWheelDiameterMm, newWheelDiameterMm, independentRollingResistanceLengthMm, supportedNormalLoadN, independentBearingDragN, using the field meanings and rules below, then run the tool.
- Read originalModeledPushN, newModeledPushN, modeledPushReductionFraction. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| originalWheelDiameterMm | Original wheel diameter mm | number | Required |
| newWheelDiameterMm | New wheel diameter mm | number | Required |
| independentRollingResistanceLengthMm | Independent rolling resistance length mm | number | Required |
| supportedNormalLoadN | Supported normal load n | number | Required |
| independentBearingDragN | Independent bearing drag n | number | Required |
Enter positive original and new wheel diameters in mm, and nonnegative resistance length in mm, normal load in N and bearing drag in N. Each modeled force is 2×resistanceLength×normalLoad/diameter+drag. Original force must be positive; report both forces and (original−new)/original. A smaller replacement wheel can yield a negative reduction fraction.
pushN=2×resistanceLengthMm×normalLoadN/diameterMm+bearingDragN; reduction=(old−new)/old Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| originalModeledPushN | Original Modeled Push N; follow the units, sign, ordering and evidence convention stated above | number |
| newModeledPushN | New Modeled Push N; follow the units, sign, ordering and evidence convention stated above | number |
| modeledPushReductionFraction | Modeled Push Reduction Fraction; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"originalWheelDiameterMm": 100,
"newWheelDiameterMm": 200,
"independentRollingResistanceLengthMm": 2,
"supportedNormalLoadN": 1000,
"independentBearingDragN": 10
},
"output": {
"originalModeledPushN": 50,
"newModeledPushN": 30,
"modeledPushReductionFraction": 0.4
}
}Limitations and assumptions
Increasing wheel diameter changes that component while the supplied bearing drag remains a separate contribution. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Cart Push Force Start vs Sustained Ratio Checker for this related task: Starting and sustained cart forces describe different phases of movement.
Use Carrying Load Percent Body Weight Limit Checker when its separate inputs and assumptions fit the question: Carried load as a percentage of body mass is a simple normalization.
References
Similar or alternative tools
- Cart Push Force Start vs Sustained Ratio Checker
Starting and sustained cart forces describe different phases of movement.
- Carrying Load Percent Body Weight Limit Checker
Carried load as a percentage of body mass is a simple normalization.