@hamgom95/bikecalc

Bicycle gear calculator.

API Documentation

Constants

aeroDrag ⇒ number

Calculate aerodynamic drag force.

Kind: global constant
Returns: number - Aerodynamic drag force (in N).

| Param | Type | Description | | --- | --- | --- | | Cd | number | The drag coefficient. | | A | number | The frontal area (in m2). | | p | number | The air density (in kg/m3). | | u | number | The air velocity relative to the object (in m/s). |

gearInches ⇒ number

Calculate gear inches for drivetrain.

Kind: global constant
Returns: number - Gear inches

| Param | Type | Description | | --- | --- | --- | | chainringTeeth | number | The number of teeth on the front chainring. | | sprocketTeeth | number | The number of teeth on the rear sprocket. | | wheelDiameter | number | The wheel diameter in meters. |

development ⇒ number

Calculate development of drivetrain.

Kind: global constant
Returns: number - Development in meters.

| Param | Type | Description | | --- | --- | --- | | chainringTeeth | number | The number of teeth on the front chainring. | | sprocketTeeth | number | The number of teeth on the rear sprocket. | | wheelDiameter | number | The wheel diameter in meters. |

gainRatio ⇒ number

Calculate gain ratio for drivetrain.

Kind: global constant
Returns: number - Gain ratio

| Param | Type | Description | | --- | --- | --- | | chainringTeeth | number | The number of teeth on the front chainring. | | sprocketTeeth | number | The number of teeth on the rear sprocket. | | wheelDiameter | number | The wheel diameter in meters. | | crankLength | number | The crank length in meters. |

speedAtCadence ⇒ number

Calculate speed (m/s) at cadence for drivetrain.

Kind: global constant
Returns: number - speed (in m/s)

| Param | Type | Description | | --- | --- | --- | | chainringTeeth | number | The number of teeth on the front chainring. | | sprocketTeeth | number | The number of teeth on the rear sprocket. | | wheelDiameter | number | The wheel diameter in meters. | | cadence | number | Cadence (in revolutions per minute) |

skidPatches ⇒ number

Calculate number of skid patches for gear combination.

Kind: global constant
Returns: number - The number of skid patches.

| Param | Type | Default | Description | | --- | --- | --- | --- | | chainringTeeth | number | | The number of teeth on the front chainring. | | sprocketTeeth | number | | The number of teeth on the rear sprocket. | | [ambidextrous] | boolean | true | Whether the rider is an ambidextrous skidder. |

calories ⇒ number

Calculate estimated energy expenditure while cycling at a specific power.

Kind: global constant
Returns: number - burned energy in kilocalories

| Param | Type | Description | | --- | --- | --- | | watts | number | produced average power over interval in watts | | seconds | number | number of seconds where power was produced |

power ⇒ number

Calculate power for cadence and force.

Kind: global constant
Returns: number - The power (in Watt).

| Param | Type | Description | | --- | --- | --- | | crankLength | number | The cranklength (in meters). | | cadence | number | The cadence (in revolutions per minute). | | force | number | The pedalforce (in N). |

force ⇒ number

Calculate force for power and cadence.

Kind: global constant
Returns: number - The pedalforce (in N).

| Param | Type | Description | | --- | --- | --- | | crankLength | number | The cranklength (in meters). | | cadence | number | The cadence (in revolutions per minute). | | power | number | The power (in Watt). |

pedalVelocity ⇒ number

Calculate linear pedal velocity from cadence.

Kind: global constant
Returns: number - The linear pedal velocity (in m/s).

| Param | Type | Description | | --- | --- | --- | | crankLength | number | The cranklength (in meters). | | cadence | number | The cadence (in revolutions per minute) |