Gears in the drivetrain of a bike.

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8answers
7k views

How to position a bike for work without a stand

I want to tweak my gears, from time to time: Adjust my front and rear derailleur limits, see if the shifts are smooth, make small adjustments on the cable tension, and so on. Is there any way to get ...
3
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2answers
3k views

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

What's the range on granny gears - the innermost, smallest front chainring?
3
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4answers
517 views

2,600km on an 8 speed bike?

I am about to go off on a 2,600km tour from Austia through Italy, finish in Malta. I originally planned to do this solo trip on my Giant Trance x2 full suspension but decided not to since it is too ...
3
votes
2answers
686 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 (...
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3answers
2k views

Rear index shifting not staying in middle gears

I have replaced a chain (SRAM PC 830) and 7 speed freewheel (Shimano MF-HG37) on the back of my daily commuter bike about 300 miles/ 3 weeks ago with the same models. The old parts lasted me 4000 ...
3
votes
1answer
179 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 ...
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3answers
5k views

Which gears combinations shouldn't be used?

Is there any general rule or recommendation to avoid usage of certain gears combinations (for 2xN and 3xN gears systems)? Do they differ for mtb and road bikes? I know that it's recommended not to ...
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2answers
3k views

What is a better gearing combination for downhill?

One of the tracks I've been riding recently is testing both my skill level and my bike. The track is a combination steepness and roughness that makes it significantly different to what I've previously ...
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3answers
228 views

Questions about shifting from a new road cyclist

I recently purchased a used bike from my local co-op. I've ridden previously on fixed bikes with straight bars, but this bike is the first one I've owned where I have to shift and use drop handlebars. ...
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2answers
333 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 ...
3
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2answers
76 views

What is the advantage of a “compact crankset” vs changing a chainring?

It seems that I'm old (my last good bike had a 5-speed freewheel and shifters mounted on down tube braze-ons - they were indexed, though!), and I've been out of cycling for quite some time. I've seen ...
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1answer
232 views

Why is 53/39 known as “standard” for road bikes?

In common cycling parlance, 53/39 is referred to as "standard" gearing for road cranksets, and most mechanics or experienced cyclists will understand that if you say you have a "standard crankset", ...
3
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1answer
120 views

Can I use a 7 speed shifter on an 8 speed cassette

I am currently upgrading my mountain bike and have bought a set of wheels that accepts 8,9,10 speed cassettes but my previous wheels used a 7 speed freewheel. If i install the new wheels with an 8 ...
3
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3answers
292 views

Is it typical for the front and rear gear levers to be reversed?

I recently purchased my first bicycle since I was a kid. The bike I bought has individual gear levers for shifting up and down for both the front and rear gears. I thought it was odd that these levers ...
3
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2answers
180 views

cable tension for Shimano 105 Front derailleur is very tight

I just got a merida scultura 400 and on the biggest chainring there's rubbing on the outside of the front derailleur cage. the only way that I can lower this is by tightening the cable by ALOT. is ...
3
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1answer
60 views

can down tube shifters be used with a gear set of 21 gears? (3x7)

I have two bikes - one a vintage 12 speed with down tube shifters - the other a twist shift gear conversion with 21 set shimano gears. I want to put the 21 gear set on the intage road bike - can I ...
3
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1answer
278 views

microSHIFT on front gears, how does it work?

Firstly, I do apologise if I don't get all the terminology correctly but I hope I'm still clear. We bought a second-hand 18-speed bike that has a front gear system that I've not encountered before. ...
3
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1answer
529 views

sram cx1 without the sram cx1 crankset?

I'm thinking of upgrading to sram cx-1 and discs for next season but would like to keep the current crank set based power meter I have. Can anyone think of a reason why I could not use the current ...
3
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5answers
879 views

Can I pedal my bicycle backwards to move it backwards?

Is there any changes I could do to my cycle so that I can make it move backwards?Just a question out of eagerness.
3
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1answer
108 views

Is it possible to fit twist grip gears on vintage drop down handlebars?

I have a bit of a Frankenstein bike made from odd parts and it has straight handlebars with twist grip gears fitted to an old road bike style frame. I hate the straight bars but love the twist grip - ...
3
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2answers
1k views

Adding front derailleur vs upgrading the rear one on a (ladies) bicycle

What I want to achieve is going from having some gears to having more gears. To be more specific I would like to get more gear ratio range in both low and high end. First of all I tried to look for ...
3
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1answer
195 views

Chain overshoots cog when shifting from low to high gears

Hi when shifting from low to high gears my chain is overshooting the cog and jumping into the next one. I tried turning the low limit screw outward to move the derailer in towards the low gears but it ...
3
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1answer
226 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, ...
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2answers
11k 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 ...
3
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2answers
578 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 ...
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2answers
319 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 ...
3
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2answers
41 views

Regina Extra Freewheel or Cassette

I have a road bike (Carlton Flyer, 1977) with a regina extra rear cassette. I'm interested in downgearing it (i live on a massive hill) and am trying to identify whether it is a freewheel or cassette ...
3
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2answers
50 views

Component(gearing) upgrade question

I'm a long time ultra-runner turned triathlete so please bear with me. I'm looking to upgrade to Shimano Ultegra 11sp components and currently I'm running on the stock components which are Shimano 105'...
3
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1answer
548 views

What are the pros and cons of different types of shifter cables?

What are the pros and cons of regular and slick gear/shifter cables? I just want easy gear changing. I have shimano gears if that helps. I know the difference between them, but I want to know some ...
3
votes
1answer
335 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 ...
3
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1answer
1k 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 http://www.chainreactioncycles.com/Models.aspx?ModelID=...
3
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3answers
216 views

Why is my bike slipping gears?

I have a 1997 Gary Fisher Tassajara that got a complete overhaul and tune-up at a bike shop a year ago. (to the tune of $180, but some of that was new tires- I'm the original owner) I ride between 4 ...
3
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2answers
340 views

Road Brifters with MTB Derailleurs

I've just bought a lovely Surly touring frame and I simply stuck all of my mountain bike components on it. That means I've retained a flat handlebar. I'd really like to stick drop bars on though and ...
3
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1answer
136 views

Can I install a gears cassette on a regular bike?

I was given a bicycle for my birthday (yai!), it has 24" wheels and it is awesome! But it is single speed and sometimes it is hard to ride up-hill in my daily commute. Could I change the rear gear ...
3
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2answers
63 views

Chain wedging itself between cassette and gaurd

Ok, so, basically, the rear cassette on my bike is giving me a lot of problems, and I'm not exactly a professional cyclist who would know where to begin so I thought I'd ask here; The problem seems ...
3
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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 ...
3
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3answers
5k 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 non-...
3
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1answer
115 views

Indexing issues on new build, shimano 105 5800

I am in the process of building a road bike. I currently setting up my rear derailleur. I can't seem to index the gears. I have set the high and low limit screws. I can shift up the cassette (small ...
3
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1answer
86 views

Chain is reluctant to shift into hardest gear on rear cassette

I have a Giant Escape, with Shimano Acera gears (3 speed on the front, 7 speeds on the back). When the chain is in the hardest gear on the front cassette, then it is reluctant to shift into the ...
3
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1answer
275 views

Chain coming off with internal hub gear bike - why?

I have a Raleigh Caprice bike, about 7 years old, with sturmey archer 3 speed hub gears. There have been some problems with the hub gears in the past 9 months, which have been fixed by a mechanic. ...
3
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3answers
240 views

Larger sproket on a single speed crankset?

I recently bought an urban bike that comes with a single gear crankset with a 42 tooth sprocket and an 8 speed rear with 12-36 teeth. I would like to swap out the front sprocket to a larger one to ...
3
votes
2answers
310 views

Shimano Claris shifter double/triple shifting up (when moving to smaller, harder cogs) on the rear derailleur

Although my rear derailleur is properly indexed it's suddenly started to double or even triple shift on an upshift - i.e. when moving to harder, smaller cogs on the cassette. This happens whether I'm ...
3
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1answer
393 views

converting stem shifters to brifters

I'm new. I'm 26, from the UK and until last year I'd never cycled more than 10 miles before. Then in September I cycled 2700 miles from Maine to Florida. It was great. I've just bought a Dawes Galaxy,...
3
votes
1answer
221 views

Sachs- Huret derailleur (re)installation

Sachs - Huret derailleur installation So the learning curve continues on the '85 Peugeot P-16. The main lessons are to take pictures and time getting each thing done. I have the rear derailleur hung....
3
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4answers
2k views

Bike gears not shifting how they should

So I've not cycled in a while but my step dad was using my bike and he has a habbit of breaking stuff. I have since decided to start cycling to work again and I replaced various parts due to rust etc (...
3
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1answer
54 views

Can old, stiff friction shifters be made serviceable?

I've got a few friction shifters knocking around but all seem so rough as to be impossible to use on a bike. Are they meant to be like that or can a service be done on them to get good use out of them?...
3
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3answers
91 views

Other than chain length, what are the limitations to the number of gear teeth?

I need to replace my chainwheel and cassette, and it made me think. I know that the chain has to be a specific length relative to the number of teeth on the gears. I was thinking about changing the ...
3
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1answer
38 views

Adjusting Gear Actuation

I recently brought a second hand bike with Shimano Deore gears on it and when I switch up a gear on the chain-ring it requires a significant amount of actuation pressure on the 'flappy' paddle (...
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2answers
378 views

How do I use my power meter file to improve my time up this steep hill climb tt?

The hill is 0.8km long with an average gradient of 13%. My cadence on my 46t-36t 11-25t 9 speed gear ratio starts at 80rpm and rapidly dips to 40 rpm. Is there a way to calculate what gear ratio is ...
2
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3answers
110 views

Help with the bicycle gearing

I'm new to road bicycle with gears. I have 3 gears in front and 8 at the back. The principle behind Bicycle gearing is too difficult for me to understand. Please tell me what gears to use When ...