Gears in the drivetrain of a bike.

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3
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1answer
37 views

Spokes popping, chains jumping gears while not shifting and derailing when shifting, etc

I've had the same Trek bike for 3 and a half years with ongoing shifting problems, but for the last 6 months I've had a litany of problems. My LBS is at their wits end. Spokes are shearing regularly, ...
1
vote
2answers
44 views

Can I convert a 1x9 speed Madsen kg271 cargo bike to a 2 or 3 x 9?

I know most these days seem to want to go the other direction, but my partner would like more gears on this heavy cargo bike that can be tough to pedal uphill. I think the frame has all of the ...
3
votes
2answers
64 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 ...
5
votes
1answer
38 views

Replace my stock crankset and cassette for a 22-32-42t crankset and a 11-40t cassette on recumbent trike?

I am leaving on a coast to coast tour starting in Florida and ending in California this November. I have a Catrike Expedition with a 30-39-52t Truvativ Elita and a 11-30t cassette with a 26" rear ...
1
vote
1answer
56 views

Indexing 6 sprocket rear derailleur, having trouble reaching largest sprocket

I'm trying to index my rear gears after replacing my 6 sprocket freewheel. I've set the limit screws fine, but I didn't have enough play in the barrel adjusters to make much adjustment, so I undid the ...
1
vote
1answer
42 views

Do all 10-speed chains fit 3x10?

I'm wondering if all 10-speed chains fit to 3x10. A lot of webshops say that the chain is "for road bikes 2x10" or something like that. Or nothing at all. The chain I have right now (Shinano CN HG-54) ...
1
vote
1answer
41 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
votes
2answers
72 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
votes
1answer
206 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", ...
0
votes
1answer
78 views

Making my dream bike come true [closed]

my name is Benjamin and for quite some time now i have been riding my bicycle to college and other places. The bike i have now is only very simple but has saved as a great alternative for transport ...
4
votes
3answers
91 views

Adding gears to a childs trike pickle pashley

I'd like to add gears to my disabled son's pickle pashley tricycle. I have made a start by adding a 5 speed casette, but I'm stuck trying to work out how to shift the gears as there is no where to ...
2
votes
1answer
70 views

How to change front gearing

So I have a bicycle that has a single front gear, but many back gears with a derailleur. I am wondering if I change the size of the front gear (like significantly), meaning if I get a bigger front ...
2
votes
3answers
107 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 ...
2
votes
1answer
51 views

My cycle's gears don't change properly

At the rear wheel gear, the gear does not change from the 7th gear to the 6th gear when i change the gear in the handlebar once. But the next time i do it it changes. So, if the manual in the ...
0
votes
1answer
72 views

Can i set up a 7speed gear and disc brake on hercules rocky mtb 2.0 cycle

My cycle is a non gear cycle .Can i set up disc brake and 7speed gear. [![ this is my cycle ][2]][2]
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votes
4answers
121 views

Constant / maximum set load bike? Does it exist?

Does a bike exist such that you can program it with what load you desire and it will shift gears for you based on that load or maybe never exceed that load? For example, suppose an older person has ...
1
vote
1answer
46 views

MTB gear xx1 repairable?

I have an XX1 cassette, and broke the cog with 24 teeth, is this replaceable or repairable?
0
votes
1answer
53 views

Shimano 105 5800 front derailleur installation

I am currently installing a front derailleur as part of a new bike build. It attaches to the frame via a braze on mount. I can't get it to shift onto the big ring. It shifts onto the big ring only ...
3
votes
1answer
110 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 ...
0
votes
0answers
45 views

Connect Trekking Bike Brakes to Road Bike Lever

A family member will give me his old (high class) trekking bike. I like the bike a lot but would like to swap the steering bar for a road bike one, which I am used to and like a lot. Is it possible ...
1
vote
1answer
66 views

When I shift to the smallest cog, it's suddenly too loose

The other day I was riding with the chain on the smallest cog in the back (and the middle chainring in the front) and suddenly something felt like it slipped and the chain was suddenly way too loose. ...
3
votes
2answers
139 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 ...
1
vote
1answer
51 views

Front derailleur takes 6 clicks to shift gears, instead of 3 [duplicate]

I've just stripped all cables and chain from a badly kept bicycle and replaced them. I've correctly adjusted the rear derailleur and it works great. However, front derailleur which only has 3 gears ...
3
votes
3answers
225 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. ...
1
vote
1answer
107 views

Upgrading parts on Fuji Panic 3.0 [closed]

I want to upgrade some gear parts on my current bike, which is a Fuji Panic 3.0 I don't really know if it will be compatible though. The bike: http://www.bikepedia.com/QuickBike/BikeSpecs.aspx?year=...
0
votes
1answer
131 views

Opposed cone chainless progressive 24 speed gearing system using belts, has it been tried? [closed]

I am wondering why on bikes I don't see them using a pair of opposed ice cream cone shaped gears such that a fixed length belt can be moved on them to change the gear ratio. It would be cool if ...
3
votes
1answer
56 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
votes
1answer
90 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 - ...
6
votes
1answer
109 views

Can I mix and match cogs from 2 different SRAM cassettes and still expect it to work?

My road bike currently has a 12-25 cassette on it. I really want the cog with 11 teeth instead of the cog with 12 teeth, but I don't want to upgrade to a full 11-32. If I were to install a new 12-25 ...
2
votes
1answer
31 views

Internal hub gear suddenly stopped shifting

I have never had an internal hub gear bike before, so I don't know much about them. My issue is that all of the gears stopped working suddenly when I was just riding the bike. The bike has 5 gears, ...
6
votes
2answers
106 views

Which cables and housing do I need?

I am going to build my own bike. I purchased the 105 5800 groupset the other day and was examining the different components. The shifters came with some cables and cable housing. I have attached a ...
0
votes
1answer
40 views

Upgrade gear ratio

I have a triple chainset 50*39*30*,and 9speed cassette.Could I upgrade these to a 52*chainset and a 10speed cassette,without changing the chain or derailleur.TIA
5
votes
1answer
72 views

Can you have too many in line barrel adjusters?

Just replacing the shifters on my bike. It had STI shifters and I'm putting thumb shifters on, the shifters have built in barrel adjusters. The bike also came with barrel adjusters on the down tube, ...
1
vote
1answer
87 views

24 gear SRAM shifters- PROBLEM

So recently i bought a carrera vengeance for £45 which is a bargain and the only problem was the gears(24 gear SRAM shifters) for the left side. When i got it i tried to shift but it just clicks and ...
-6
votes
2answers
92 views

2 speed quad sprocket bike… do these exist? If not, why not? [closed]

I was wondering if they make a 2 speed bike with a design having 2 front sprockets (one on each side of the bottom bracket) and 2 rear sprockets such that there is some mechanism that can switch ...
1
vote
3answers
71 views

Troubleshooting a bent mech hanger [duplicate]

I think I bent the mech hanger (right term?) on my Schwinn MTB. Now changing gears is hard. I'm trying to better understand my options. What I understand so far as to what I can do: Look for a new ...
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votes
2answers
128 views

Using only 7 speeds of an 8 speed freewheel is ok?

I currently have a 7 speed Shimano RD (rear derailleur) that is working perfectly with the stock 7 speed freewheel which is 14-28. Shimano has a MegaRange 7 speed freewheel that is 14-34 but the ...
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votes
1answer
98 views

Why don't we see this special progressive 3x5 gear setup being offered? [duplicate]

This question is not the same as the 36 gear post which used a combination of internal hub gears, cogs, and chainrings. This one is much simpler and much lower cost. Part of the problem of something ...
-4
votes
2answers
75 views

How does a RD (rear derailleur) handle variable tooth gaps?

I am trying to better understand how a rear derailleur (RD) works. I can understand how the RD moves inward and outward but suppose someone changes several of their cogs on the cassette. Let's just ...
4
votes
1answer
111 views

Gear cables replacement - inline barrel adjusters

I'm in the process of ordering replacement gear cables for my road bike which has 105-5800 groupset. My existing cables have inline barrel adjusters and I was wondering: Are the inline barrel ...
-2
votes
3answers
118 views

Sensible shifting on a triple chainring?

I have found from experience on my 3x7 MTB that shifting a triple front chainring is useful if you do the following: I tend to use only the first 3 cogs in the smallest chainring so that is 3 very ...
13
votes
5answers
3k views

Worries about a gear ratio of 1:1?

I'm planning a randonneur-like bike with drop bars, STI shifters, and nevertheless some low gears. The crankset could be a "compact plus" (I guess from Sugino), 44 and 28 teeths, and the cassette a ...
-4
votes
1answer
121 views

Closely spaced nonoverlapping 36 (2x12x2) gears borrowing from music theory. Good idea?

I had an idea. Why not space gears on a bike the same as musical notes? For example, in music, if you start on a certain note (let's say C3), you need to go up 12 more half steps (notes) to get to ...
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votes
1answer
100 views

Super close ratio high gears via double size sprockets… practical?

I am wondering why they use such small cogs on a bike. Problem with that is as you get down below about 15 teeth, you cannot get precise steps to the next gear. For example, you can go 15 to 14 or ...
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votes
1answer
114 views

Left side isolated granny gear, right side all other gears? Possible and practical? [closed]

To me, the left side on a bike that doesn't have a rear disc brake is being somewhat wasted. So how about this idea... on the right side have the normal gears but on the left side, have a ...
-2
votes
1answer
77 views

Quad chainring (4x12)?

Does anyone yet make an affordable quad chainring? I would love to see a 4x12 with my staggered cog idea such that all 12 gears are shifted progressively using the 4 chainrings. Each chainring would ...
1
vote
1answer
80 views

Ideal % jump between gears?

I am wondering if people prefer equally spaced gears (such as 20% per gear change) or if (like on motorcycles), the lower gears are spread out more and the upper gears are "tighter" (more closely ...
2
votes
2answers
196 views

Triple chainring + nonstandard sloped cogset. Can this work?

It seems that on my mountain bike and all other multispeed bikes I have seen having a rear cassette or freewheel all have sloped cogs, meaning they go from largest to smallest in order of decreasing ...
2
votes
2answers
134 views

Half speed internal hub gear?

Rather than resort to radical gears such as a very small granny chainring (such as 20T) and a very large rear cog (40T), both of which can cause some problems for derailleurs as well as other problems ...
0
votes
2answers
163 views

Hypothetical 1x10 simplification to 1x3 or 1x5

This is a hypothetical question that will help viewers (including myself) better understand gears and their limitations. Suppose someone sees a bike they like at a local bikeshop and it just happens ...