People frequently ask me how much power my e-bike puts out. Bosch only says the maximum torque at each setting. This is how to figure it out. Looks like the Speed one with 700C wheels will put out 436 Watts.
For a motor operating at constant torque from 0 to 45km/h (28mph), the power delivered would be P=T*wt with wt representing the rotational frequency of the wheels and tires (depends on the tire’s inflated diameter) and T= torque of motor.
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circumference of 700 x 30C tire = 2,146mm = 2.146m
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maximum torque of Bosch Performance Line = 75 Nm
wt = 45 km/h * 1000 m/km * 1 rev/2.146m * 1 h/60min * 1 min/60s = 5.8 rev/s
P = T * wt = 75 Nm * 5.8 m/s = 436 W
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