体重、自転車重量、勾配、路面の種類、風を考慮し、パワー（ワット）から走行速度を物理計算で推定。現実的な転がり抵抗とCdAのプリセット付き。
| 力の内訳 | ワット | 全体に占める割合 |
|---|
総パワー = 転がり抵抗 + 空気抵抗 + 重力 + 駆動系ロス。具体的には: P = Crr・m・g・v ＋ ½・ρ・CdA・(v + 風速)²・v ＋ m・g・sin(atan(勾配))・v を、駆動系効率0.95で割った値です。
定数: 空気密度 ρ = 1.225kg/m³、g = 9.8067m/s²。速度は二分探索で求めます。
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