Cadence needed to hold a target speed in a given gear, and the chainring-to-cog ...
https://bike-calc.x402tookit.com/cadence-for-speedOverview
Cadence needed to hold a target speed in a given gear, and the chainring-to-cog ratio needed for a speed at a cadence.
Protocol
x402
Price
$0.02
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Bicycle Gearing & Fit Calc
Source
bazaar
Indexed
2026-10-20 21:22:49
Health
Status
healthy
Latency (p50)
565ms
Uptime (30d)
86.7%
Reliability Score
83.3/100
Last Checked
2026-10-28 06:43:16
Last Healthy
2026-10-28 06:43:16
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"chainring": 50,
"cog": 17,
"speedKmh": 35
},
"type": "http"
}
Output Schema
{
"example": {
"asOf": "2026-10-12T01:50:56.140Z",
"atCadenceRpm": 90,
"cadenceNeededRpm": 94.2,
"chainring": 50,
"circumferenceMm": 2105,
"cog": 17,
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"notChecked": [
"wind, gradient and the power needed to hold the speed",
"tyre deflection",
"…1 more"
],
"reasons": [
"Cadence = speed / (ratio x wheel circumference)."
],
"requiredDevelopmentAtCadenceMeters": 6.481,
"requiredRatioAtCadence": 3.0791,
"source": "computed locally (speed = ratio x circumference x cadence)",
"speedKmh": 35,
"speedMph": 21.748,
"summary": "35 km/h at 90 rpm needs a ratio of 3.0791 (6.48 m per turn). In 50/17 you need 94.2 rpm.",
"verdict": "COMPUTED"
},
"type": "json"
}