Sprocket pitch & outside diameter

Code-Snippets

curl "https://api.oanor.com/chaindrive-api/v1/sprocket" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/chaindrive-api/v1/sprocket", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/chaindrive-api/v1/sprocket");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/chaindrive-api/v1/sprocket",
    headers={"x-oanor-key": "oanor_test_..."}
)

Beispiel-Response

Echte Antwort dieses Endpoints, erfasst beim letzten Health-Check.

{
    "data": {
        "note": "Pitch diameter = pitch ÷ sin(180°/teeth) — the circle the chain pins ride on. The outside (tip) diameter is a touch larger, ≈ pitch × (0.6 + cot(180°/teeth)). More teeth runs smoother and quieter with less 'chordal' speed variation; keep the small sprocket to 17+ teeth where you can.",
        "inputs": {
            "teeth": 17,
            "pitch_in": 0.5
        },
        "pitch_diameter_in": 2.721,
        "outside_diameter_in": 2.975
    },
    "meta": {
        "timestamp": "2026-06-06T23:53:58.596Z",
        "request_id": "6b4e2824-a9e8-4926-980e-15b4215e70f1"
    },
    "status": "ok",
    "message": "Sprocket diameter",
    "success": true
}