Rolling Resistance Coefficient Examples
Table of rolling resistance coefficient examples:
| Crr | b | Description |
| 0.0003 to 0.0004 | "Pure rolling resistance" Railroad steel wheel on steel rail | |
| 0.0010 to 0.0024 | 0.5 mm | Railroad steel wheel on steel rail. Passenger rail car about 0.0020 |
| 0.001 to 0.0015 | 0.1 mm | Hardened steel ball bearings on steel |
| 0.0019 to 0.0065 | Mine car cast iron wheels on steel rail | |
| 0.0022 to 0.005 | Production bicycle tires at 120 psi (8.3 bar) and 50 km/h (31 mph), measured on rollers | |
| 0.0025 | Special Michelin solar car/eco-marathon tires | |
| 0.005 | Dirty tram rails (standard) with straights and curves | |
| 0.0045 to 0.008 | Large truck (Semi) tires | |
| 0.0055 | Typical BMX bicycle tires used for solar cars | |
| 0.0062 to 0.015 | Car tire measurements | |
| 0.010 to 0.015 | Ordinary car tires on concrete | |
| 0.0385 to 0.073 | Stage coach (19th century) on dirt road. Soft snow on road for worst case. | |
| 0.3 | Ordinary car tires on sand |
For example, in earth gravity, a car of 1000 kg on asphalt will need a force of around 100 newtons for rolling (1000 kg × 9.81 m/s2 × 0.01 = 98.1 N).
Read more about this topic: Rolling Resistance
Famous quotes containing the words rolling, resistance and/or examples:
“The child is innocence and forgetting, a new beginning, a game, a wheel rolling on its own, a prime movement, a sacred Yes.”
—Friedrich Nietzsche (1844–1900)
“War is pillage versus resistance and if illusions of magnitude could be transmuted into ideals of magnanimity, peace might be realized.”
—Marianne Moore (1887–1972)
“There are many examples of women that have excelled in learning, and even in war, but this is no reason we should bring ‘em all up to Latin and Greek or else military discipline, instead of needle-work and housewifry.”
—Bernard Mandeville (1670–1733)