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2. Caster - Wikipedia

   en.wikipedia.org/wiki/Caster

   A basic, rigid caster consists of a wheel mounted to a stationary fork. The orientation of the fork, which is fixed relative to the vehicle, is determined when the caster is mounted to the vehicle. [1] An example of this is the wheels found at the rear of a shopping cart in North America.

3. Scenery wagon - Wikipedia

   en.wikipedia.org/wiki/Scenery_wagon

   Consequently, it may be difficult or impossible to move a wagon that has a large number of swivel casters when the casters are unaligned. As a result, rigid casters are preferred for larger wagons, which typically require a proportionally higher number of casters. [2] Air casters are sometimes used in place of rolling casters. These require ...

4. Wheel - Wikipedia

   en.wikipedia.org/wiki/Wheel

   An early wheel made of a solid piece of wood. A wheel is a rotating component (typically circular in shape) that is intended to turn on an axle bearing. The wheel is one of the key components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating ...

5. Artillery wheel - Wikipedia

   en.wikipedia.org/wiki/Artillery_wheel

   For example, this type of wheel was used on the pictured Armstrong gun, used in Japan in 1868. A similar design was used for a gun carriage for the US Army's 3.2-inch gun in 1881, with a wheel diameter of 57 inches (1,448 mm), based on testing of an Archibald Wheel Company design. By 1917, the 14-spoke wheel evolved to have 16 spokes, 0.5 ...

6. Caster board - Wikipedia

   en.wikipedia.org/wiki/Caster_board

   Riding a caster board requires using a twisting motion of hips and legs. A rider or "caster boarder" gains speed because each wheel is mounted on a 30° slant on the bottom of each deck. When each deck is pushed to the side, it causes the board to be pushed upward by the wheels' rotation against the gradient of the mounts.

7. Dana 70 - Wikipedia

   en.wikipedia.org/wiki/Dana_70

   1 ⁄ 2, 5 ⁄ 8 and 31 ⁄ 32 inch (13, 16 and 25 mm) offset. The first Dana 70 axles had a 1 ⁄ 2-inch (13 mm) pinion offset and were found in Dana 70HD's as well. The drawback with the 1 / 2-inch offset was that a 4.10:1 gear ratio was the highest gear set possible.