| 1. | On February 26, 2016 the first driving wheel for 5550 was cast.
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| 2. | Locomotive brakes employ large shoes which press against the driving wheel treads.
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| 3. | This was done to reduce the wear on the leading driving wheels.
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| 4. | The cyclist can then change gears manually by reversing the drive wheel.
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| 5. | Each set of six driving wheels is driven by two steam cylinders.
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| 6. | The engine was liquid-cooled, with a radiator over the rear driving wheel.
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| 7. | For example, suppose the drive wheel is actually 26 inches in diameter.
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| 8. | They had 5 ft 9in ( 1, 752 mm ) driving wheels.
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| 9. | :For another idea of how to get torque look at Driving wheel.
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| 10. | The A1 and A2 classes were similar, but had larger driving wheels.
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