3 ms·
> The regenerative solution is a serial hybrid drive that converts the mechanical energy generated during pedaling into electric energy, which in turn is conver
by marcodiego 4y ago
> The regenerative solution is a serial hybrid drive that converts the mechanical energy generated during pedaling into electric energy, which in turn is converted back into mechanical energy in the wheel hub motor.
How much efficiency is lost compared to a direct mechanical system?
- m463 4y agoThat's what I wonder too. Honestly, the efficiency of a chain drive system is really high. (however, it should match your body's efficiency - 90 is supposed to be an excellent cadence for cardio, and is good for the knees) wikipedia says up to 99%: Mechanical efficiency From a mechanical viewpoint, up to 99% of the energy delivered by the rider into the pedals is transmitted to the wheels (clean, lubricated new chain at 400 W), although the use of gearing mechanisms reduces this by 1–7% (clean, well-lubricated derailleurs), 4–12% (chain with 3-speed hubs), or 10–20% (shaft drive with 3-speed hubs). The higher efficiencies in each range are achieved at higher power levels and in direct drive (hub gears) or with large driven cogs (derailleurs). https://en.wikipedia.org/wiki/Bicycle_performance https://en.wikipedia.org/wiki/Bicycle_performance