![]() I’ll let the Speedi folks describe the use case in their own words: That would effectively turn a 15.5 mph e-bike into a more thrilling 23 mph ride. It uses a small gear with a 1:1.5 ratio to slow down the speed sensor. ![]() The Speedi device tricks the speed sensor on the rear wheel into spinning more slowly, effectively raising the e-bike’s electronic speed limit by around 50%. When the e-bike reaches a pre-programmed top speed – as low as 25 km/h or 15.5 mph in many countries – the motor power cuts out and riders can only reach higher speeds under their own leg power or with the help of gravity. Many electric bicycles use a magnetic speed sensor on the rear wheel to measure the traveling speed of the electric bike. But a new device is making it easy to increase the top speed of electric bicycles without making any major modifications to the electric bike’s drive system. Electric bicycles are subject to various speed limits around the world, but the 25 km/h (15.5 mph) speed limit in places like the EU and Australia is particularly frustrating to riders who are in search of just a bit more “oomph” in their bikes.
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