Senior Riders: Balance & Fear of Falling
To take up the bicycle at an older age may seem imprudent when so many other forms of exercise are available.But the fear of falling may be keeping potential bicyclists from enjoying a healthy and fun activity that can lead to an array of new experiences.
Honor Thy Chain: A Survey Of The Modern Roller Chain
The exceptional efficiency of the roller chain, rated at 98.4% by the National Physical Laboratory, is primarily due to the reduced friction when the roller piece of the chain engages with and leaves the tooth on a sprocket (toothed-wheel or gear).
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