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how mutch of energy (voltag) required for electric bike? Answered

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orksecurity
orksecurity

11 years ago

Energy (power) is better measured in watts -- volts times amps. A lower-voltage motor that supplies the same power requires more current.

Guessing that a basic electric bike wants at least one horsepower, and knowing that 1 horsepower = 745.699872 watts (thank you, websearch), that should give you a starting point for figuring this.

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frollard
frollard

11 years ago

Voltage can run anywhere from 12-100 volts - whatever your motor wants.  Motor spindle speed is generally related to voltage, and torque to amperage; the combination 'energy' wattage is the overall performance.

Generally electric bikes are in the 12-72 volt range.
200 watts is a good pedal-assist motor; but you won't get super high speed out of it.
500 watts will drive you around at a decent clip without pedalling
1000 watts will get you up to motor-vehicle speeds with ease - and since you're such a light vehicle, you can blow away a lot of actual 'motor' vehicles :D
Over that and you're looking at serious injuries quick :D

It's a trade off - speed/power versus range/weight.