![]() Unsourced material may be challenged and removed. ![]() Please help improve this article by adding citations to reliable sources in this section. This section needs additional citations for verification. The higher efficiencies in each range are achieved at higher power levels and in direct drive (hub gears) or with large driven cogs (derailleurs). In terms of the ratio of cargo weight ( payload) a bicycle can carry to the total bike weight, cycling (here under cargo biking) is also the most efficient means of cargo transportation.įrom a mechanical viewpoint, up to 99% of the mechanical 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 and a straight chainline), 4–12% (chain with 3-speed hubs), or 10–20% (shaft drive with 3-speed hubs). The transport performance of bicycles is also exceptional in terms of ton kilometers. Bicycles are extraordinarily efficient machines in terms of the amount of energy a person must expend to travel a given distance, cycling is calculated to be the most efficient self-powered means of transportation. ![]()
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