That would depend on the bike, the size of your chainwheels and the size of your rear sprockets, there's no fixed answer. Your best bet is to mosey along to www.bicycletutor.com, www.parktool.com or www.sheldonbrown.com, they will have detailed instructions on how to determine chain length for each individual setup.
No definite answer, will depend on frame stretch and sprocket sizes. Set the wheel in its most forward position, loop the chain around chainwheel and sprocket, cut chain with least amount of slack. connect chain, move wheel backwards until chain is tight enough. Hand crank wheel, check for tight spots, then do the wheel nuts up properly.
There's really no telling, it depends on the size/design of the frame, and the tooth counts on the sprocket and driver.
Every chain is sold a little longer than needed so that it can be cut to fit according to the bike it goes on to. This means that there's no way of telling how many links you'd need w/o knowing exactly what bike you have.
When they're bought it's usually 116 links for bikes with external gears. Single gear chains are sold a bit shorter. but this really isn't particularly helpful info. Every chain is sold a little longer than needed so that it can be cut to fit according to the bike it goes on to. This means that there's no way of telling how many links there are on a chain in use w/o counting them.
6
About 68.2.A link is an archaic unit of linear measure. There are 100 links in a chain, there are 66 feet in a chain.
grind off the pin that holds the links together and grind off how many links you need and just put a master link on it
There are 100 links in a chain. There are 66 feet in one chain. Therefore, one foot is equal to 100/66 = 1.51 recurring (that is, 1.515151...) links.
15
As many that is needed
Monomers are the building blocks that are used to make polymers. Remember: mono = one, poly = many Monomers are like the links in a chain and polymers are like the chain. Many chain links (monomers) make up a whole chain (polymer)
metal strand core inside of plastic cover:3 chain:4
12
29 maybe? Have a think.
Good bikes are made in different frame sizes. And dedicated riders often chainge the gearing ratio by replacing either the sprocket or the driver with one with another tooth count than it came with. These things influence chain length, so you see that no one can tell how many links your chain should be. Chains are just about Always bought a Little long, then cut to length on the bike. Faster than counting links. Chain breakers aren't expensive. Either have a shop fit the chain when you buy it, or get a chain breaker (and a quicklink) and fit it yourself. Do note that chain, driver and sprocket wear together, but usually the chain wears the fastest. So sticking a new chain on old sprockets can often lead to the chain skipping and slipping. If you don't know how to measure a chain for wear, better replace aat least chain and driver at the same time.