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).
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Famous quotes containing the words rolling, resistance and/or examples:
“It is only when we are very happy that we can bear to gaze merrily upon the vast and limitless expanse of water, rolling on and on with such persistent, irritating monotony, to the accompaniment of our thoughts, whether grave or gay. When they are gay, the waves echo their gaiety; but when they are sad, then every breaker, as it rolls, seems to bring additional sadness, and to speak to us of hopelessness and of the pettiness of all our joys.”
—Emmuska, Baroness Orczy (1865–1947)
“Even the most subjected person has moments of rage and resentment so intense that they respond, they act against. There is an inner uprising that leads to rebellion, however short- lived. It may be only momentary but it takes place. That space within oneself where resistance is possible remains.”
—bell hooks (b. c. 1955)
“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)