Gearing metrics + speed
API · /bikegear-api
Bicycle Gear API
salutare
4,493 Abbonati
Bicycle gearing maths as an API, computed locally and deterministically. The gear endpoint takes a chainring and cog tooth count and a wheel size and returns every common gearing metric: the gear ratio, gear inches (the classic measure — ratio times wheel diameter in inches), the gain ratio (Sheldon Brown's crank-length-aware measure), the development or rollout (metres travelled per crank revolution), and the road speed at a chosen cadence in km/h and mph. The speed endpoint converts between a gear-and-cadence and road speed in either direction — the speed at a cadence, or the cadence needed for a target speed. The table endpoint builds a gear chart: give one or more chainrings and a cassette of cogs and it returns a matrix of gear inches, development, gain ratio or ratio for every combination — ideal for visualising a drivetrain. Wheel size can be a preset (700x25c, 26-inch, 29er and more) or an exact rolling circumference in millimetres, and crank length is configurable for the gain ratio. Everything is computed locally and deterministically, so it is instant and private. Ideal for cycling apps and bike-fit tools, drivetrain and gear-ratio planners, and bike-shop and component sites. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is bicycle gearing; for cycling power, FTP and training zones use a cycling API.
api.oanor.com/bikegear-api
API salute
salutare- Tempo di attività
- 100.00%
- Sondaggi del server · 24 ore su 24
- Latenza media
- 85 ms
- Sondaggi del server · 24 ore su 24
- Abbonati
- 4,493
- attiva
- Chiamate totali
- 76
- ultimi 7 giorni
Prezzi
Scegli un livello: fatturazione mensile, annullamento in qualsiasi momento.
Free
Gratis
- 10,935 chiamate/mese
- 2 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 10,935 calls/month
- 2 req/sec
- Gear + speed + table
- No credit card
Starter
€12.45 /mese
- 20,550 chiamate/mese
- 8 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 20.55k calls/month
- 8 req/sec
- Gain ratio + gear charts
- Email support
Pro
€32.35 /mese
- 255,500 chiamate/mese
- 20 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 255.5k llamadas/mes
- 20 req/seg
- Tuberías de transmisión / bicicleta
- Soporte prioritario
Mega
€70.35 /mese
- 1,320,000 chiamate/mese
- 50 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 1.32M llamadas/mes
- 50 req/seg
- Escala de plataforma
- SLA dedicado
Costruito da
Correlato APIs
Altro APIs con tag sovrapposti.
Bike-Share API
Every public bike-share and e-scooter system in the world as an API — 1,500+ systems across 48 countries from the MobilityData GBFS catalog, plus LIVE station availability. Browse and search the systems catalog by country or name (Citi Bike, Vélib', Divvy, Blue Bikes, Capital Bikeshare, …), look up a system with its GBFS feed URLs, and fetch real-time station data — each station's name, location, capacity and how many bikes and docks are free right now — or find the nearest stations to any coordinate by great-circle distance. Ideal for trip-planning, mobility, maps and smart-city apps. Catalog data from MobilityData; live availability from each operator's official GBFS feed.
api.oanor.com/bikeshare-api
Spoke Length & Wheel API
Bicycle wheel-building maths as an API, computed locally and deterministically — the spoke-length and tension numbers a wheelbuilder laces a wheel by. The spoke endpoint runs the classic spoke-length formula from the hub and rim geometry: L = √(R² + r² + f² − 2·R·r·cos θ) − hole ÷ 2, where R is half the effective rim diameter (ERD), r is half the hub flange diameter, f is the centre-to-flange offset and θ = crosses × 720° ÷ spokes — so a 602 mm ERD rim on a 45 mm flange at 35 mm offset, 32 spokes laced 3-cross (a 67.5° crossing angle), needs a 293.9 mm spoke. It handles radial (0-cross) builds and computes the drive and non-drive sides separately from their own offsets, since a dished wheel’s two sides differ. The bracing endpoint gives each side’s bracing angle = atan(offset ÷ (ERD/2)) — the lever that resists side loads — and the resulting tension ratio, because the side with the smaller offset must carry higher tension, which is why a rear wheel’s non-drive spokes (often only about half the drive-side tension) go slack first. Everything is computed locally and deterministically, so it is instant and private. Ideal for bike-shop, wheelbuilding, cycling and bike-fit app developers, spoke-calculator and build-sheet tools, and component-database software. Pure local computation — no key, no third-party service, instant. Millimetres. Live, nothing stored. 2 compute endpoints. For gear inches or gearing use a bicycle-gear API.
api.oanor.com/spokelength-api
API de rendimiento ciclista
Matemáticas de rendimiento ciclista como API. El endpoint de potencia estima la potencia en vatios necesaria para pedalear a una velocidad dada en una pendiente determinada, a partir de un modelo físico — resistencia a la rodadura, gravedad en la subida y arrastre aerodinámico — con valores predeterminados sensatos que puedes anular (coeficiente de resistencia a la rodadura, área de arrastre CdA, densidad del aire, eficiencia de la transmisión y viento en contra), y desglosa la potencia en sus componentes de rodadura, gravedad y aerodinámica, además de vatios por kilogramo. El endpoint ftp-zones convierte una Potencia Funcional Umbral en las siete zonas de entrenamiento de Coggan, desde recuperación activa hasta potencia neuromuscular, como rangos de vatios. El endpoint vam calcula el VAM — metros de ascenso vertical por hora, la métrica de velocidad de escalada — ya sea a partir de la elevación ganada y el tiempo, o de la velocidad y la pendiente. Todo se calcula local y determinísticamente, por lo que es instantáneo y privado. Ideal para aplicaciones de ciclismo y entrenamiento, ordenadores de bicicleta y herramientas de medidores de potencia, entrenamiento, y análisis de rutas y subidas. Cálculo local puro — sin clave, sin servicio de terceros, instantáneo. En vivo, nada almacenado. 4 endpoints. Esto son matemáticas de ciclismo; para ritmo de carrera usa una API de ritmo y para zonas de frecuencia cardíaca de entrenamiento usa una API de frecuencia cardíaca.
api.oanor.com/cycling-api
Roller Chain Drive API
Roller-chain drive maths as an API, computed locally and deterministically — the chain-length, sprocket and speed numbers a machine designer or millwright lays out a drive with. The chain-length endpoint gives the chain in pitches from the two sprocket tooth counts, the chain pitch and the centre distance: L = 2·C + (N1+N2)/2 + ((N2−N1)/2π)² ÷ C (C in pitches), rounded UP to an even number so the chain closes without an offset link — a 17- and 34-tooth pair at 15-inch centres on #40 (half-inch) chain comes to 86 pitches, 43 inches. The sprocket endpoint gives the pitch diameter, pitch ÷ sin(180°/teeth), and the outside diameter — a 17-tooth #40 sprocket has a 2.72-inch pitch circle. The speed endpoint gives the chain's linear speed, pitch × teeth × rpm ÷ 12, so a 17-tooth #40 sprocket at 100 rpm runs the chain at about 71 ft/min. Everything is computed locally and deterministically, so it is instant and private. Ideal for machine-design and drivetrain apps, conveyor and equipment-build tools, maker and CAD calculators, and engineering aids. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints. For gear ratios use a gear-ratio API; for belts use a pulley API.
api.oanor.com/chaindrive-api
Domande frequenti
Risposte rapide su prezzi, quote e integrazione.
Come ottengo una chiave API per Bicycle Gear API?
Registrati gratuitamente su oanor.com, genera una chiave API dalla dashboard sviluppatore e chiama Bicycle Gear API con l'header x-oanor-key. Nessuna carta di credito richiesta per il piano gratuito.
Qual è il limite di velocità di Bicycle Gear API?
Il piano gratuito consente 1 richiesta al secondo. I piani a pagamento arrivano fino a 50 richieste al secondo nel piano Mega. I limiti rigorosi restituiscono HTTP 429 oltre la quota — nessuna spesa imprevista.
Quanto costa Bicycle Gear API?
Bicycle Gear API ha un piano gratuito con 100 chiamate / mese. I piani a pagamento partono da €12.45 / mese con quote più alte e limiti di velocità più rapidi.
Posso cancellare l'abbonamento in qualsiasi momento?
Sì. I piani sono fatturati mensilmente e puoi cancellare in qualsiasi momento dalla dashboard di fatturazione. Nessun contratto a lungo termine e nessuna penale di cancellazione.
Bicycle Gear API è conforme al GDPR?
Tutte le richieste a Bicycle Gear API passano attraverso il nostro gateway in UE. La tua chiave upstream non lascia mai il nostro server e nessun dato personale viene condiviso con il fornitore upstream oltre alla richiesta inviata.
Scegli un endpoint dall'elenco a sinistra per visualizzarne i dettagli e provarlo.
Frammenti di codice
Iscriviti per ottenere una chiave API, quindi chiama qualsiasi percorso sotto il tuo slug.
curl https://api.oanor.com/bikegear-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/bikegear-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/bikegear-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);import requests
r = requests.get(
"https://api.oanor.com/bikegear-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Valutazioni
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