What is the gear ratio (i.e., how many teeth on the front and rear chain rings?)
210585
I just counted 53 by 16. With a comfortable cadence I can ride 12 to 15 mph all day. Hills aren't a big challenge either since the bike is so light. Hope it helps!
1172600
It's 100mm front and 120mm rear ! It says it on the feature section! And depending on your bike if it old or vintige you probably need different axles but if it's a bike that uses 700c rims then you should be fine
291857
Yes, this is the three ring chain...30 teeth, 42 teeth, 52 teeth. I just put it on my Fuji Newest 3.0 this weekend. It works great. This includes cranks. You should, if you are going to the trouble of changing cranks and chain rings, change your bottom bracket as well.
654517
I really think it depends on your chainstay clearance, chainring and crank arms. What I did to figure that out was to use websites like this one: http://sheldonbrown.com/chainline.html to figure out what length bottom bracket best worked for my bike. If you are running a triple, you should be at 45 (I'm assuming you are because you specifically asked about a chainline of 45), but a double should be 43.5mm...and on and on depending on your bike and gearing. You can also adjust the spacers on the back axle as well, but this shouldn't be necessary if you know that your rear (sprocket end) is at 45mm, which is what you are trying to achieve (explained here: http://www.velodromeshop.net/index.php?p=page&page_id=chainline). Sorry, not an easy yes or no answer. Just check those sites out and do the measurements and you should be ok. Hope I helped...good luck!
1117853
The left is friction so it will do 2 or 3 chainrings on crank - versatile. Right is 7 spds, but I've used it w/ an 8 spd, you just miss a cog at top or bottom. Fyi: 6,7 & 8 speed use same basic chain & gear spacing, so interchangeability is nice.
235455
That is a very hard question to answer. 21 gears come in all rations so I really can't answer exactly. There are 8 speeds and they go from easiest to hardest when pedaling. Thanks
2074735
http://dahon.com/mainnav/folding-bikes/single-view/bike/jack_d8-1.html30 lbs, 8 gears according to website
2186107
Type A, Gear ratio 12.7 : 1, 1039 rpmType B, Gear ratio 38.2 : 1, 345 rpmType C, Gear ratio 114.7 : 1, 115 rpmType D, Gear ratio 344.2 : 1, 38 rpm
1892607
A normal gear and a higher gear. Mine is on a 20" wheel, so it is lower than a 26" or 700c. So, for me, it's a low and normal good for the city riding I do. It comes with a 19 tooth cog that can be changed to suit your needs. The chain wheel on your bike makes a difference too, on a Dahon with 52 teeth, it had a normal and high gear, but my bike has 46 teeth on the chain wheel making it lower and easier to pedal.
254728
All 6, 7 & 8-speed rear gears/cassettes use the same 3/32" chain width. Chains are shipped with enough length for almost any bike. You need to cut them to length with a chain breaker tool (which you really should buy if you don't have one). Be sure to leave enough length to allow shifting into the largest front chainring and the largest rear cog/gear at the same time (even though that's not a very good gear to ride in).
1976674
It is neither, it is a 14 speed. There are two chain rings in front and 7 cogs in the back. You shift the chain from side to side which gives you a total of 14 speeds. It is probably easier to think of it as having two ranges of gears, a high and a low range which you select by shifting the chain between the two front chain rings. You then have 7 speeds within each of these two ranges selected by shifting the chain side to side on the rear 7 cogs. Hope this helps! Bill
390103
first, if your bike has road bike style crankset, then there are no 22t sprockets for it. though a mtb crank will fill a 22t. second a 32t cassette will get you up any hill with a 30t crank sprocket. also the 11-32 has a smoother gear ratio between sprocket then 12-34. If you decided to swap cassette, make sure that your chain is long enough as well as your derailleur cage.
401708
No front gears. REAR: Freewheel: 7 Cogs "DNP "Slick Shift System" (14T Smallest to 28T Largest)I hope this info answers your question.
2211388
7 -8 is fine, "my setup i add small 32t Chainring and work great for my speed bike.
660799
This changes the FRONT chain ring...It should work if what you have on the rear cluster works... Good luck..Chief
2244765
The answer posted by Hunt Ma is the right answer. You don't need a link. But if you want spares, you can go by the number of speeds it is designed for. 6-7-8-speed chain is wider than 7-8-speed chain. (Z-72 is 7-8-speed chain). Always go with chains and parts designed for the same number of speeds. Finally, if you have an 8-speed cluster, chains designed for 6 as well as 7or 8 speeds don't shift as cleanly due to the slight extra width.
1240156
It should work overall -- except when on the large front chain ring and on the 36 rear, there may not be enough chain to make that large of a route. I assume the next ring down from the 36 may be a 32? Also, I don't think you will ever need to be on the large front chainring and the large 36 rear cog at the same time -- as other combinations will work instead.