Gears in the drivetrain of a bike.

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3
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3answers
3k views

How much faster can i go after moving from 2x10 to a 3x10 gear setup?

My 26" mountain bike currently has a 2x10 gear setup with SRAM components: a SRAM S-1250 crank with 38/24 chainrings, and a SRAM PG-1030, 10-speed, 11-36t cassette. I feel that when riding on ...
5
votes
2answers
4k views

Upgrade Shimano from 9- to 10- speed

I'm thinking of upgrading the 9-speed Tiagra rear mech on one of my (road) bikes to something, still Shimano, but 10-speed. The obvious replacements I'll need are cassette, right-shifter and chain. ...
6
votes
4answers
618 views

Comparing gear ratios on different bike types

How can I compare gear ratios on different wheel sizes? How can I compare gear ratios on MTB with tracking bikes with bigger wheels? How can I compare gear ratios with gear hubs?
4
votes
4answers
2k views

Chain skipping on some gears

I have an old cruising bike with 21 gears. A few months ago I was pedalling back home when my chain broke, and I was only able to get the chain replaced this week. After having it replaced I noticed ...
1
vote
1answer
985 views

Mixing 9-speed Tiagra and 9-speed Deore XT

I currently have a road bike with the following setup for the gears: 9-speed Tiagra front and rear derailleurs, Sora shifters, all from 2009: 30/39/52 Crankset 11-25 Cassette. I need some more low ...
3
votes
1answer
172 views

What tricks do you use to avoid damaging cables when adjusting the gears?

I was trying to adjust gears, and being my first time, I ended up damaging the cable. I mean that I "smashed" it, the threads became apart, and it was dangerous to deal with it. I replaced the cable, ...
4
votes
4answers
5k views

Why are there almost no bikes with a single chainring?

Bikes with two or three chainrings are the norm, and then there are singlespeeds, but except for kids' bikes, you see almost no stock bikes with a single chainring in front but a cassette and ...
5
votes
2answers
440 views

Switching to Lower Gears for Climbing

Right now, I've got a SRAM 11/26 cassette. I just moved to San Francisco, and some of the climbs out here (e.g., Mt. Tamalpais) are pretty brutal with over an hour of climbing. My cadence over some of ...
4
votes
2answers
599 views

Can you reverse the sprockets on a cassette to lengthen its lifespan?

I know my bike's rear cassette needs replacing, but before I do that, is it feasible to dismantle the 8 sprockets to reverse their spin? Can you increase the lifespan of a cassette by letting the cogs ...
11
votes
3answers
17k views

Help Me Understand My Bicycle's Gears

I've recently started commuting with a bicycle (Giant hybrid bicycle). I've been trying to learn a little about bicycling to make my commute easier and my time on the bicycle more enjoyable. Please ...
6
votes
1answer
850 views

I find that I'm always in my highest gear. What options to I have to re-distribute the ratios to a more useful range

I have three gears in the front and 8 in the back, but I always use the highest gear (I live in a flat place) I might drop down one or two gears occationally but this is only a small fraction of the ...
1
vote
1answer
1k views

Bicycle slipping gears on middle sprocket gears 4-7

I see lots of questions on gears slipping but not sure it's the same as what I have. Out of 21 gears I only have problems with 4 (middle sprocket (2) on left shifter gears (4-7) on right shifter). ...
0
votes
2answers
216 views

Unable to change from 14th to 7th

I've got a bike that I have had for about 8 weeks and it has already been back to be serviced twice. It's just returned from the second service and I've noticed that it is not shifting from 14th to ...
4
votes
3answers
11k views

Can I fit a cassette with a larger range with my Shimano Tiagra 10-speed ( GS-4600) derailleur?

I'm currently running a 2x10 shimano tiagra 10-speed drivetrain with a 50/34 compact crankset, a 12-30 rear cassette, and a Shimano Tiagra GS-4600 derailleur (that's medium cage aka road long cage) on ...
2
votes
1answer
250 views

Problems with gears after re-attaching front chainring

I had to remove the pedal crank arm together with the front chain set when fixing a bottom bracket problem, but now that I've re-attached it, gear changes in my front derailleur are completely off. ...
3
votes
2answers
605 views

Make a 3-gear bike go easy on uphill

I want to see how can I make this 3-gear bike go easier on uphill. It has an internal gear hub. I don't know much about bikes but I'm thinking if I can merely replace the hub for one with 14 gears ...
3
votes
1answer
257 views

Should I have a spare cassette or a spare wheel?

I have a road bike that I use for triathlons as well as club rides in the evenings and on weekends. I don't have the bike in front of me, but the range of the cassette is on the low side. I'm more ...
13
votes
6answers
5k views

What is the simplest way to lower the gearing on my touring bike?

I have a 2004 Jamis Aurora with a 52/42/30 triple and an 11-32 cassette in the back. 30x32 (25.3 gear inches) being the lowest gear is frustrating for the hilly terrain where I live (e.g., 7% grade ...
6
votes
3answers
2k views

Why does my bike stick in low gears?

When I change into a low gear (i.e. onto a bigger cog) on my back cog all is fine. However, when I later change up again the chain sticks on the larger cog. I commute about 10 miles a day and this has ...
4
votes
2answers
2k views

Is it practical to replace two sprockets on a cassette?

My bike has 53/39T chainrings and a cassette with 12,13,14,15,17,19,21,23,25 sprockets, but I like to ride up steep mountain roads. Is it possible (without great expense) to replace two sprockets to ...
2
votes
3answers
1k views

Efficient gear shifting

I've recent purchased a road bike bit of a classic with the downtube shifters, lugged steel frame etc etc. Before I mainly road my fixie, thou I do have another geared bike, but it left a bit to ...
1
vote
2answers
463 views

SRAM force rear shifts go in the wrong direction when on largest cassette

I got a new bike about 6 months ago with SRAM Force on it. It's my first time riding SRAM and I love it except for one thing: If I'm climbing and my RD is shifted all the way up ( to 28-tooth ) and ...
2
votes
2answers
623 views

Converting downstem shifters to barcons

What considerations should be made for converting a downstem shifting system to barcons? Both the current system and the system that I would like are friction shifters. The bike is a 1986 Peugeot ...
3
votes
1answer
741 views

What does double and triple gear shifters mean?

I am looking at these components and am wondering what does double and triple gear shifting mean? Shimano R221 Double Gear Shifters 8 Speed ...
2
votes
2answers
1k views

Maintenance/Upgrades for Gary Fisher Joshua MTB

Let me start from the beginning: About three years ago, I broke my leg after buying a Gary Fisher Joshua MTB, when I was just getting into road and cross-country riding. I've only started riding ...
1
vote
2answers
3k views

Will 10 speed cranks work with an 8 speed freewheel?

I'm looking at building a road-bike, and I've just purchased some wheels with campagnolo hubs, with an 8 speed freewheel on the back. Can I use Campagnolo Daytona / Veloce cranks on the front? I ...
2
votes
2answers
588 views

Townie gearing suddenly too easy

So the rear wheel (26x2) on my Electra Townie 7d broke its axle, and I ended up replacing it with a new 26x1.5 wheel, that being what the LBS had in stock. The bike seems a bit faster, which is nice, ...
1
vote
2answers
10k views

Difference between Shimano HG51 8-Speed Cassette and Shimano HG50 8-Speed Cassette

Can anyone tell me the difference between Shimano HG51 and HG50 8-Speed Cassettes? I can't find any information online about this so was hoping someone might be able to help me. I am looking to ...
2
votes
3answers
1k views

Replace S-RAM S7 gear hub with something better

I have an SRAM S7 gear on my bike, and I'm not content with it. I find it more or less impossible to get the adjustment right. Supposedly I just have to leave the shifter in position 7 and then ...
1
vote
1answer
255 views

Bicycle is Having a hard time Shifting — especially gears 13 and 14

21 speed commuter bike. Raleigh 2011 brand. After my gear shifter cable was broken, I took it into the shop to get it fixed. (4 days ago). Ever since, when shifting, it takes forever to actually ...
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vote
2answers
1k views

Chain “vibrates” on higher gears

My freewheel that I have installed myself only 1.5 years ago has totally worn out by the moment and so I just had it replaced along with a chain at the workshop. I'm still concerned though about the ...
4
votes
3answers
9k views

Why does my gear slip when going uphill / standing?

I have a road bike that I use to commute ~6 miles to work every day. Some of the portions of the ride are at a steep incline, and I've noticed that when I get up to stand on some of these hills, my ...
4
votes
1answer
581 views

Is my front derailleur angled straight?

I am attempting to adjust my front gears and have also been following a video to adjust the high/low position of my front derailleur. The issue I am having is that the low adjustment is no where near ...
4
votes
3answers
6k views

Adivce on what to do next with crunching / slipping gears

About two weeks ago I took my bike to the local bike shop to get serviced. It was previously slipping gears under load and at the end I couldn't use the lowest gear going up hill it would just slip ...
1
vote
1answer
735 views

Convert 9 speeed Campagnolo Ergo Levers to 10 Speed

A friend gave me a carbon set of campag record 9 speed ergos. I would love to convert the 9 to 10 Speed and I understand it is possible. I have read that some dealers will do it but the cost is ...
3
votes
2answers
6k views

How do the adjustment barrels on a gear cable work?

I have a Shimano Sora derailleur on the bike I just bought with a triple chainring in the front. Right up by the shifters there is a sort of barrel adjuster on the cable. It doesn't seem to do ...
1
vote
2answers
363 views

Speed and the sizes of tires/gears

Does the speed of a normal mountain bike vary according to the diameter of the wheels? If it does, will a larger diameter increase the speed or decrease it? Similarly, if the speed varies according ...
8
votes
7answers
8k views

While pedaling standing up, bike crank gives in as if shifting, what is causing this?

While standing up and pedaling, the cranks give in as if shifting. It seams like I am shifting down, but my hands are off the shifter, almost like the chain is skipping a link. I took it to a bike ...
3
votes
1answer
167 views

Are the numbers on a shifter standardised?

My bike has several gears labelled one to six. Do these numbers relate specifically to a certain standard? In other words, would a bike set to say gear four on one bike, perform in the same way as ...
3
votes
2answers
280 views

Rear gears don't turn anticlockwise

I've taken the rear wheel off my bike but the rear gears are stuck and do not spin freely anticlockwise. It had been out of use for about 4 days, kept in a dry garage. I took the wheel off because it ...
2
votes
2answers
2k views

Rear wheel not centred, presses against one of the brake pads (Rohloff hub, Magura rim brakes)

Upon replacing my rear brake pads, I noticed that my rear wheel is not properly centered. The consequence is that the wheel is pressed against one of the brake pads, as can be seen in the pictures ...
4
votes
1answer
156 views

Replaced tyre and tube, now the rear gears will not stop

Just put on a tyre and innertube, fits perfectly, but now when I stop pedalling the gears at the back keep moving so the chain just sags down so much that it hits the wheel etc. Any ideas on how to ...
1
vote
2answers
6k views

Will a 9 speed front derailleur work properly with a 10 speed sprocket?

I am pretty near done my current bike build project, just missing a front derailleur. I can't think of why front derailleurs would need to be compatible with different numbers of speeds, given that ...
1
vote
1answer
267 views

Are faceplates for different shimano brifters compatible?

I got a used brifter and the faceplate fell off. I am pretty sure it was a 105. It works well enough but it looks shitty. Does anyone know if I can just order whichever shimano brifter faceplate, and ...
6
votes
8answers
18k views

Chain slipping on newish bike

I've looked at most of the answers for related questions and they all speak about replacing parts that are old. I just bought a new bike from a friend who rode the bike for about a month before ...
6
votes
3answers
3k views

Bike not changing correctly between two gears

I have only recently started riding to work and I've been given a bike by a friend which is in reasonably good shape. For the way things are working out I keep the front gear in the same position and ...
6
votes
3answers
5k views

What is the impact of changing to a smaller chainring?

My road bike has a Campagnolo Veloce gearset. It's running 53 and 39 tooth chainrings. I have a 13-25 10sp cassette. I find that a lot of the time when I'm cruising, I'm on the big chainring and in ...
1
vote
3answers
12k views

How to fix problem with mountain bike chain falling off gears?

The chain on my girlfriend's bike came off the front gear today, it looks like the back gear changing mechanism isn't handling back-pedaling properly, whenever she pedals backwards the chain slacks ...
2
votes
2answers
317 views

Has bicycle gearing become 'easier' over the last few decades?

If you look at a 10-12 speed bicycle from the days before indexed gears you have a 27"/700c wheel with a 42/52 chainset and a 14-28 freewheel. At the time such a setup was standard for High Street ...
1
vote
2answers
9k views

Shimano Revoshift repair

My bike has a grip shift (Shimano revoshift) which isn't shifting through all 8 gears. Even with the gear cable removed (it recently broke) it will only shift through half of the gear numbers and ...