Same as a chain wheel. OR Either the front or rear gear assembly.
a toothed wheel over which a chain passes
Toothed mechanism that engages the film edge, used to advance the film strip through a camera, printer, or projector.
tooth on the periphery of a wheel or cylinder to engage in the links of a chain
the toothed rings that engage the chain.
a wheel with suitably shaped and spaced cogs or teeth to engage with the links of a chain.
roller that has teeth on the rims to pull film or paper through
thin wheel with teeth that engage with a chain
tooth on the rim of gear wheel
a gear or wheel with metal teeth that meshe
a gear with metal teeth that mesh with a chain
a metal "wheel" with "teeth" on the outside
a special cogwheel used with chains
a toothed ring that hooks and pulls the drive chain
any of the teeth in the rim of a wheel or drum that connects the links of a chain
A toothed driving wheel used to move film through various machines by engaging with the perforation holes.
A toothed wheel used to transport perforated motion picture film.
general term for a cog or chainring.
One of the cluster of toothed cogs comprising the "cassette" or "block" attached to the rear wheel. Often referred to by the number of teeth on each cog (the higher the number, the easier the gear): "She's riding in the 21 going up this hill."
The rear cog, normally a smaller toothed ring, which fits onto the rear wheel; also called a cog or cogwheel. The sprockets fit onto a cassette which is called a "block" by riders. Today these blocks usually contain 9 or 10 sprockets.
There is a sprocket mounted to the crankshaft of the engine, which is typically quite small and is also called the drive sprocket. A much larger sprocket is mounted to the rear axle, is connected to the drive sprocket via the chain and is also referred to as the driven sprocket. The size ratio between the two is called the gear ratio. Since this ratio can be easily modified by exchanging the sprocket on the axle, these sprockets and/or ratios are also referred to as gears. You can choose between single-piece sprockets, which and two-piece, or split sprockets. In order to change the single-piece sprockets, you will have to unmount the axle, the split sprockets can be changed while the axle is mounted. Thus, many prefer the split sprockets, but some claim that single-piece sprockets run more true.
The rear cog, normally a smaller toothed ring, which fits onto the rear wheel; also called a cog or cogwheel. The sprockets fit onto a cassette which is called a "block" by riders. Most common is a 9 speed block.
one of series of teeth or points on wheel rim arranged to fit links of chain or another set of sprockets.
