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6
votes
1answer
132 views

timing chain keeps dropping/derailing only with partner

For a volunteer project biking with blind riders (NiewidomiNatandemach.pl), we've been partnered up and provided a tandem bike, that seems new enough and in good condition. Unlike the guy behind ...
1
vote
2answers
62 views

Bike chain slips off sprocket as I pedal during repairs. Any idea why?

I am having an issue with a 26 inch Beach Cruiser. Everything was put together by a bike shop however one of the chains slipped off the sprocket during transport home. When I went to put it back on, ...
3
votes
2answers
323 views

Why do my pedals shake and pop?

I just purchased a cruiser bike online that I had to assemble. When I rode it for the first time, I notice my pedals felt shaky, whether pedaling or coasting, and when I did pedal every few seconds ...
5
votes
3answers
394 views

50/34 vs 52/36 crankset for 11-32 cassette (shimano 105 5800FC)

Following up on this enlightening answer, I would like to know the differences between 50/34(compact), 52/36(mid-compact) and 53/39 (standard). The cassette I am choosing is 11-32 to give me a wider ...
3
votes
3answers
154 views

Cranksets for tandem with internal gear hub

I am thinking about assembling a trekking tandem bike. I would like to use an internal gear hub and put both chains on the right side of the bike. I have some questions about the cranksets: What ...
5
votes
2answers
18k 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
229 views

Freewheel sprocket locking up

I was just out riding my bike. Its nothing fancy, just a €300 single-speed with with a flip-flop hub. I usually ride the freewheel side. Today it made some weird noises and decided to lock up / be a ...
4
votes
1answer
47 views

Rear sprockets not turning easily

I recently bought a women's Schwinn "Clear Creek" 18-speed mountain bike at a yard sale. The rear derailleur is broken, and the rear sprockets are rusty and don't turn easily against the wheel. I ...
0
votes
2answers
158 views

Cannot reach the bearing adjustment nut on rear wheel

I have a Mt. bike with Shimano STX RC components. I cannot reach the nut and lock nut to adjust the bearing tension. Any ideas how to make an adjustment so I can reach it? Also, How do I tell if ...
1
vote
1answer
1k 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
1k 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 ...
1
vote
1answer
73 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
252 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 ...
0
votes
1answer
31 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?
6
votes
1answer
235 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?
2
votes
1answer
252 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, ...
3
votes
1answer
1k 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
676 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 ...
7
votes
1answer
2k 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 ...
2
votes
3answers
514 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 ...
1
vote
1answer
3k 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 ...
6
votes
4answers
4k 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 ...
1
vote
1answer
171 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 ...
8
votes
1answer
1k 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
4answers
3k 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 ...
6
votes
4answers
8k 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 ...