Gear inches and speed at a cadence for every chainring and cog in a drivetrain, ...
https://bike-calc.x402tookit.com/gear-tableOverview
Gear inches and speed at a cadence for every chainring and cog in a drivetrain, with the range, steps and duplicate gears.
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)
579ms
Uptime (30d)
87.5%
Reliability Score
83.8/100
Last Checked
2026-10-28 06:42:35
Last Healthy
2026-10-28 06:42:35
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"chainrings": "50,34",
"cogs": "11,12,13,14,15,17,19,21,24,28"
},
"type": "http"
}
Output Schema
{
"example": {
"asOf": "2026-10-12T01:50:57.447Z",
"averageStepPercent": 7.27,
"cadenceRpm": 90,
"circumferenceMm": 2105,
"combinations": 20,
"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.",
"highestGear": {
"chainring": 50,
"cog": 11,
"gearInches": 119.9,
"ratio": 4.545,
"speedKmh": 51.7
},
"largestStepPercent": 16.7,
"lowestGear": {
"chainring": 34,
"cog": 28,
"gearInches": 32,
"ratio": 1.214,
"speedKmh": 13.8
},
"nearDuplicateGears": 0,
"notChecked": [
"cross-chaining (big-big and small-small combinations that wear the chain)",
"front and rear derailleur capacity",
"…1 more"
],
"rangePercent": 374.4,
"reasons": [
"Gears are sorted by ratio; steps are the percentage jump from one gear to the next higher one."
],
"sortedByRatio": [
{
"chainring": 34,
"cog": 28,
"gearInches": 32,
"ratio": 1.214,
"speedKmh": 13.8
},
{
"chainring": 34,
"cog": 24,
"gearInches": 37.4,
"ratio": 1.417,
"speedKmh": 16.1
}
],
"source": "computed locally (ratio x circumference)",
"summary": "20 combinations from 32 (34/28) to 119.9 gear inches (50/11); range 374%.",
"verdict": "COMPUTED"
},
"type": "json"
}