e-bike speed limiting - how?

crassius · Jun 25, 2015

haven't worked on one in many years, and that one was limited by lack of power

see a lot of ads now saying 'top speed 20mph' and am wondering how the speed is limited to that number (in motor rpm, or in controller, or ??)

is it limited only in factory bikes or also in DIY kits?

Lungcookie · Jun 30, 2015

Voltage can limit top speed.
The rpm of the motor can limit top speed.
Tire size could too.
You can use a Cycle Analyst(or similar) to limit speed/amps/watts and throttle ramping settings.(so you don't do wheelies)

The 20mph/750w is due to control by your local governments, thank your nanny.

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e-bike speed limiting - how?

crassius

Well-Known Member

Lungcookie

New Member