Gears in the drivetrain of a bike.

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4
votes
2answers
194 views

Switching from 3x9 Gears to Cheaper Ones?

Alert I am unsure of the right terminology for gear-wheel but I mean the round things near pedals such as 3x9 or typically with 3x7 (3 front, 7 back) mix in commuting bikes. My current gears are 3x9 ...
4
votes
1answer
5k views

What are the advantage of the different gear shifters

I have just buy for the first time a road bike (Boardman Team Carbon) after long years on hybrids bike and unfortunately due of a injury I didn't have much time to experience with it. The bike has a ...
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 ...
8
votes
1answer
800 views

Setting chain length

My chain broke and in a moment of silliness (I was cold wet and slightly annoyed) I threw the broken one away before thinking about measuring the new one. Is there a guide to getting the chain ...
3
votes
2answers
3k views

What's the shortest / easiest “granny gear” available?

What's the range on granny gears - the innermost, smallest front chainring?
5
votes
2answers
698 views

Do you need to lubricate gears after cleaning gears and chain?

I just cleaned my gears and chain with a biodegradable degreaser. I'm going to lubricate my chain. Do I also need to lubricate the gears or do I just pedal and make sure that I hit all gears? Will the ...
9
votes
4answers
4k views

How to fix front gear taking 2 shifts just to move onto next cog

I was out on a ride yesterday and several times when I was changing up and down between big chain ring and little chain ring (I only have the 2 rings up front) it required 2 gear changes. The gears ...
9
votes
7answers
13k views

What range of sprockets is useful in a road bike cassette?

My road bike currently has a 27/39/53 crankset and a 13-26 cassette, both of which need to be replaced. I occasionally find myself in both extremes—while heading up the very steep hills of the Bay ...
5
votes
5answers
3k views

Gear indicator on SRAM X5 Shifter shows wrong gear

I have SRAM X5 Shifters like this one: The indicator is now showing the gear above the one I'm actually in, so if like the picture it shows a 2 I would actually be in 1 (the smallest chainring), a ...
11
votes
6answers
6k views

How many effective gears do I have on a 21 speed bike?

I have a 21 speed bike (a hybrid commuting bike). But AFAIK, this does not mean that I have 21 different gear ratios. Is there any way to calculate the different gear ratios?
7
votes
1answer
987 views

Rear Derailleur Cage Lengths

What effect does the length of the cage on a rear derailleur make to bike setup/shifting?
28
votes
7answers
8k views

What's the efficiency of hub gears compared to derailleurs?

What's the efficiency of hub gears compared to derailleurs. I know that hub gears are not as efficient, a part from being heavier, how much will I loose in performance if I use hub gear?
8
votes
1answer
860 views

Chain clicks when the back wheel is in highest and lowest gears

When I have my back wheel gears in either the lowest gear or highest gear, my chain clicks as I peddle. How do I fix this?
14
votes
3answers
1k views

Should I clean the grease off the gears?

I usually keep my chain well lubricated. However, my gears are usually greasy. Should I be cleaning the gears or are they supposed to be greasy?
29
votes
5answers
8k views

Perfectly setting up gears - how?

Every time I have my bike serviced, the bike shop sets up the gears on a stand in their workshop. The gears change perfectly on the stand, but when the bike is on the road, the rear derailleur doesn't ...