No way to answer that w/o knowing where you live.
Pretty much all bikes qualify as chain and sprocket gear systems, and the ones with internal gears also have planetary gears inside their hubs. There are also two systems available that puts planetary gears in the crank assembly. Well, if it has an internally geared hub it has a more or less complicated set of planetary gears(depending on the no of gears). If it has experna gears then it has front set of sprockets and a rear set of sprockets. By running the chain over these sprockets in different combinations you get different ratios that can be used depending on how hard the rider wants to pedal.
A sprocket is another name for a toothed wheel that meshes with the chain.
A chain is a chain, it hasn't got any gears in it. But if you run it across a pair of sprockets you can create a gearing ratio.
When Mervyns closed, a former employee bought the brand and has started a Sprockets-only company. Expect to see Sprockets clothing available in 2010. Sears sells sprockets
10-speed can mean two things these days. Either it's an old bike, with two chainrings up by the pedals and five sprockets on the rear hub. (2x5 = 10) Or it's a newer bike, with one chain ring and ten sprockets on the rear hub. Whichever it is, those are the gears.
there are no sprockets on a carFeel free to correct me but I believe cars with timing chains have sprockets. Anyway, typical sprockets would be the gear-like pulleys that a bicycle chain runs on. They are considered different from gears in that they do not mesh directly, but use a chain or other device to connect them.Also I believe the power window feature of a car uses a sproket assembly.
If they're all inside the hub they're called internal gears, and consist of something mechanics refer to as "planetary" gears. If they are toothed discs that sit outside the hub they're called sprockets. The whole assembly is either a multi-speed freewheel. or a "cassette" for a freehub. It'd be very rare to find one of those with only 3 sprockets.
Cam gears are also refered to as sprockets (just another name). A chain or belt that is driven by a crankshaft gear/sprocket turns the cam gear(s)/sprocket(s). In certain high performance applications there is no chain, there are just gears meshing but that is probably not relevant to your question.
in las vegas where can I buy Erectzan
Yes, locally is a valid word in English.As an example:Peter likes to buy locally grown tomatoes.
You should buy locally instead of importing produce from far away.
If they're all inside the hub they're called internal gears, and consist of something mechanics refer to as "planetary" gears. If they are toothed discs that sit outside the hub they're called sprockets. The whole assembly is either a multi-speed freewheel. or a "cassette" for a freehub.