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Naismith's rule helps with the planning of a walking or hiking expedition by calculating how long it will take to travel the intended route, including any extra time taken when walking uphill. This rule of thumb was devised by William W. Naismith, a Scottish mountaineer, in 1892. [1] [3] [4] A modern version can be formulated as follows:
Trail decreases as head angle increases (becomes steeper), as fork offset increases, or as wheel diameter decreases. Motorcyclists tend to speak of trail in relation to rake angle. The larger the rake angle, the larger the trail. Note that, on a bicycle, as rake angle increases, head angle decreases. Trail can vary as the bike leans or steers.
There is also a coast-to-coast mountain-bike route in northern England that has the same trailheads as the walkers' path. GR 10 is a French GR footpath that runs the length of the Pyrenees Mountains, roughly paralleling the French–Spanish border on the French side.
Bicycle trails encompass a wide variety of trail types, including shared-use paths used for commuting, off-road cross-country trails and downhill mountain bike trails. Hikers and mountain bikers on top of the Drachenfels (Dragon's Rock) in the Palatinate Forest, Germany. The number of off-road cycle trails has increased significantly, along ...
Touring bikes are built with small trail to allow the rider to control a bike weighed down with baggage. As a consequence, an unloaded touring bike can feel unstable. In bicycles, fork rake, often a curve in the fork blades forward of the steering axis, is used to diminish trail. [42] Bikes with negative trail exist, such as the Python Lowracer ...
The Arabia Mountain Path (AMP) is a paved biking and hiking trail connecting sites within the Arabia Mountain National Heritage Area, Georgia, United States, built by the PATH Foundation. The trail covers more than 30 linear miles and features hills, sections of boardwalk, a serpentine bridge, and access to 13 free trail head parking areas. [ 1 ]
Greenways and/or rail trails can include a cycleway−bike path. This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources .
According to a study a human at 70 kg (150 lb) requires about 60 watts to walk at 5 km/h (3.1 mph) on firm and flat ground, [6] while according to a calculator at kreuzotter.de the same person and power output on an ordinary bicycle will travel at 15 km/h (9.3 mph), [7] so in these conditions the energy expenditure of cycling is about one-third ...