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7
votes
1answer
759 views

How can I keep my chain from derailing from the front sprocket under load?

I've watched the chain derail from the front sprocket, and there is considerable flex that is causing it. I'm a big guy with an athletic build (6'7"/280lbs), and it's a big-box bike, so I'm not ...
7
votes
1answer
848 views

Switch to a larger sprocket on child bike with coaster brakes

I bought two used bikes for my children, both with 16 inch wheels. I was surprised to see that one child has to pedal much faster to go the same speed as the other child, and discovered the two bikes ...
6
votes
4answers
4k views

How much distance can I put on drivetrain components?

I figure the jockey wheels on my derailer will last nearly forever, but what about the rest: cassette, chainrings, and chain? How many miles, kilometers, or furlongs do they normally last? I know ...
6
votes
4answers
3k views

What difference does the range of gear size matter?

I get the idea of ratios and the obvious that a smaller gear on the front and a larger one on the back will give you an easier end result but what difference does the range of a chainset or groupset ...
6
votes
4answers
2k views

Bent front sprocket

My chain just started to slip off my front gears and it happens within a minute of riding. I discovered that the middle sprocket is bent. This leads me to my questions: How much should a LBS charge ...
5
votes
1answer
220 views

Why do some people leave the chain sitting on the smaller sprocket when the bike is not used for a while?

I guess it is something related to the springs in the derailleur. But is it that important?
4
votes
2answers
8k views

Which lubricant/grease to use for ball bearings?

A little mishap happened today during cleaning my bicycle. I tried to take off the sprocket wheel for easier access, but instead I opened the lock nut of the hub (cassette type) and the balls came ...
3
votes
1answer
536 views

Can't change into the largest sprocket on rear derailleur

I bought my first road bike recently, and I've noticed I can't change into the largest cog/sprocket on the rear derailleur because when I pull the shifter the chain is pushed into the side of the ...
2
votes
1answer
301 views

Best Cassette Cog Material

I am replacing my smallest cassette cog for the 3rd time. I have been using Harris Cyclery's Aluminum Cog Crupi's Chromoly Cog is about 3 times as expensive. Is that still worth it? Can anyone ...
2
votes
3answers
399 views

can a single sprocket be locked on a road bike?

I have a univega and a fixie. i love the idea of fixed gear bikes but live in a very hilly area which requires more than just one gear. Is there a way to combined those two ideas into one awesome ...
2
votes
1answer
112 views

Rear sprocket slips

Purchased a used bike for my child a few months ago. It is one of those where to brake you pedal backwards. Anyways, I was noticing that she was having a hard time starting. Once she got going, ...
1
vote
1answer
43 views

Chainring Compatability

I've recently purchased a - 2nd hand - downhill bike which runs an 8 speed drive-train. Some components could do with an upgrade - specifically the shifter which is damaged. I have all of the ...
1
vote
1answer
2k views

Using a new chain on worn out sprocket?

I went to REI yesterday because my bottom bracket was creaking. I brought my bike with me so I could get the right tools to take it off, but while I was there the mechanic actually took the ...
1
vote
1answer
107 views

Gates belt drive front sprocket replacement

My Scott Sub 10 (2012) got damaged during transit and requires the front sprocket replaced. I have ordered the part which has since arrived but would like some advice on how to replace this. From my ...
1
vote
1answer
150 views

How is the quality of alloy sprocket 10 speed sprocket?

I saw at ebay, 10 speed cassette compatible with shimano, it's very light 103 grams, but the material is alloy with ceramic coated, it says, the cassette can be used up to 3000K, is it true? or may be ...
1
vote
0answers
149 views

Gears jumping/slipping from the rear cogset on a new bike

Its been 1 month since I have bought my new MTB (Kross globate 1.1) with 18 gears (shimano).. Now the problem is chain has slipped twice while riding. First time my speed was around 25kph and second ...
0
votes
1answer
228 views

How To Choose A Proper Sprocket Combination For A Road Bike Cassette?

I guess you have to have at least a couple of cassettes in your arsenal for different occasions. Can anyone please advise on how to choose a proper cassette depending on a trip. What can influence the ...
0
votes
1answer
24 views

Joshua X1 Rear Sprocket

I need a rear sprocket for a 1997 Joshua X1. Are they available anywhere? I live in North Carolina. If not does anyone buy the MTB for parts?