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A step of 7% corresponds to a 1-tooth change from a 14-tooth sprocket to a 15-tooth sprocket, while a step of 15% corresponds to a 2-tooth change from a 13-tooth sprocket to a 15-tooth sprocket. By contrast, car engines deliver power over a much larger range of speeds than cyclists' legs do, so relative differences of 30% or more are common for ...
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From 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).
A Step-through frame is a type of bicycle frame, often used for utility bicycles, with a low or absent top tube or cross-bar; A push bike is a form of bicycle without pedals such as the drais 1820 which is one of the first verifiable push bikes.
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January 4, 2025 at 3:30 AM Pittsburgh is hoping to get their playoff mojo back in 2025. The Steelers are back in the playoffs, looking to capitalize on a fairly surprising season for Mike Tomlin's ...
European city bike Children riding a bike in Ghana. Cycling, [1] also known as bicycling [2] or biking, [3] is the activity of riding a bicycle or other type of cycle. It encompasses the use of human-powered vehicles such as balance bikes, unicycles, tricycles, and quadricycles.
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