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:
“Look, were all the same; a man is a fourteen-room housein the bedroom hes asleep with his intelligent wife, in the living-room hes rolling around with some bareass girl, in the library hes paying his taxes, in the yard hes raising tomatoes, and in the cellar hes making a bomb to blow it all up.”
—Arthur Miller (b. 1915)
“The free man is a warrior.How is freedom measured among individuals, among peoples? According to the resistance that must be overcome, according to the trouble it takes to stay on top. The highest type of free man must be sought where the highest resistance is constantly overcome: five steps away from tyranny, close to the threshold of the danger of servitude.”
—Friedrich Nietzsche (18441900)
“It is hardly to be believed how spiritual reflections when mixed with a little physics can hold peoples attention and give them a livelier idea of God than do the often ill-applied examples of his wrath.”
—G.C. (Georg Christoph)