Gears in the drivetrain of a bike.

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2answers
227 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 ...
0
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2answers
150 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 ...
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2answers
145 views

Is it possible to shorten a chain?

I have the following chain/gear setup: I like to get rid of the rear wheel gears. However I don't want to buy any new parts. That is why I am wondering if I simply can remove all the parts from the ...
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3answers
12k views

What do I need to know about fitting new wheels on a bike?

My girlfriend has had the wheels stolen from her bike. I'd like to replace them, but we're working with a limited budget so I'm going to do the work myself and source the parts second hand. I've done ...
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1answer
811 views

Can I change chainring size on a dirt jump bike?

I don't know the name of it but there is a part on single speed bikes. The gear? I think right where the crank is connected. Well on bmx bikes and especially dirt jumping bikes it is really small and ...
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2answers
285 views

I need to change my bike from UK to US Spec

I bought a bike from the UK. The brakes and shifters are on the opposite sides. I want to change it so the front brake is on the left and the rear is on the right, Same thing for the shifters. I ...
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2answers
138 views

How to fix gears on a Kilimanjaro bike

I've just bought a Kilimanjaro bicycle for cheap. One reason it was cheap, I expect, was the gears system. It's only partly functional, and I don't understand why. I would go to the bike shop with it, ...
0
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1answer
59 views

Winter deraillers [closed]

I commute all Winter long on my Winter bike and I realize I don't use many gears. The back derailleur gets jammed with salt, dirt and other debris. I'd like to build a bike with fix gear at the back ...
0
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1answer
188 views

What to prepare for a long distance ride (1600km) [closed]

I will be riding my bicycle from Czech Republic to London this April. Even though I cycle quite frequently, this is my first time I will be doing such a long distance. I am not doing this for ...
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2answers
377 views

Upgrading rear derailer and cassette

I recently got what most people would consider a cheap and toy road bike as a gift. It came with very primitive RD and cassette (shimano SIS? I think). I enjoy upgrading my stuff, my question is, ...
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3answers
824 views

Halfords just replaced my chainset and it is a 10 speed one, but my cassette is 8 speed. Am I ok?

Last week my chainset was replaced (in warranty) and I just found out that the chainset is 10 speed (FSA Vero) but my rear cassette (+Claris gears and shifters) is 8 speed. I want to know if I will ...
0
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1answer
4k views

What tension should the front derailleur cable be when setting it up?

I'm attempting to setup my front derailleur. I've slackened off the cable, adjusted the L screw so the derailleur just clears the chain. What position should the adjusting barrel on the handles be set ...
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1answer
55 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]
0
votes
1answer
128 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 ...
0
votes
1answer
96 views

Shifter clicks in but chain stays on the largest cog, when riding

I am able to change (click through) the shifter but the chain stays on the largest cog and does not move (This happens only when riding) but the gears shift as usual when the bike is stationary and I ...
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2answers
405 views

Shimano Gears won't shift

Basically when pushing the button to shift gear I can only get one speed up and one speed down. I tried adjusting derailer and the tightness on cables but it makes no difference. Figured I'd make a ...
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2answers
248 views

Gears randomly switching

So I have a Trek Fuel SLR 90 and whenever I ride on flat dirt roads, the back gears randomly keep switching on me. It gets really annoying to ride Please help
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4answers
3k views

gears slipping after a chain change

I have a Lappierre Zesty 314 (2012). I'm running xt rear mech, a slx front mech, and my crank is xt and rear cassette is xt and xt chain. I went to the forest of dean and after the day was over I ...
0
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1answer
160 views

how to adjust the derailer - apart from the L/H limiting screws

Pardon my newb terminology. My bike's chain will not stay on the H gear (the big ring) The front derailleur will not allow it. I have loosened the limiter screw out to it's maximum and, still, no ...
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1answer
878 views

swap Shimano Alivio gear indicator for cover plate

I want to move my brake levers and gear shifters around a bit. The problem is my gears (Shimano Alivio, bought 4 years ago) have a large gear indicator on it. This is meaning that either the brakes ...
0
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1answer
48 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 ...
0
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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
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1answer
90 views

Gear mis-adjustment. Loss of gears

How do I adjust the rear gears of a bike that will not change to higher gears? It is stuck in lower two or three gears.
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4answers
207 views

Derailleur/Gears Locks Up/ Freezes Up/Stalls

Hey guys I have a specialized mtb with the old oval chainrings and lately it's been locking up. When I start pedalling "hard" or faster the crank stops turning and then jumps forward a bit and ...
0
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1answer
73 views

What other parts might need replacing if I replace an old freewheel gear set for a modern freehub cassette?

I currently have a pre 1970s 10 speed Claud Butler. Perhaps back then men were real men but there is no climbing gear. Since I mostly do touring this is a bit of a problem. Finding a new freewheel ...
0
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2answers
185 views

Chain is choking and pedals fly forwards when going up hill or standing on the bike pedals

I have a 2 month old Vodoo Bizango from Halfords in the UK. I have had this problem about 2 weeks into having the bike where if I'm on the highest gear and want to do sprints (standing on the pedals) ...
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1answer
172 views

My Gears Are not Shifting Well

my gears are not shifting well. i can only shift from 1st to 2nd...i don't know what is the problem i have shimano revoshift gear enter image description here here are some images
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2answers
1k views

8 speed shifter with 7 speed cassette

I just got a bike with broken hanger and derailleur. As the owner didn't want to put money in good parts, I installed a cheap Sunrun derailleur compatible with index, and a new hanger. Just after I ...
0
votes
1answer
934 views

Slow switching up higher gears

I have a fairly new MTB and I'm currently trying to tune the gears. Currently I can change down gears pretty smoothly I.e. 6 > 5 > 4 etc but going up the gears is slow for the chain to switch cogs. ...
0
votes
1answer
70 views

Making my dream bike come true [on hold]

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 ...
0
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0answers
39 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 ...
0
votes
1answer
116 views

Combine Nexus 3 Hub with Torpedo 3 gear shifter?

I have upgraded my bike with a Nexus 3 hub, but the corresponding gear shifter takes away too much handle space on my crooked handle bar (I have to grab the gear shifter during my rides). Hence, I'd ...
0
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1answer
124 views

Scott S30 road bike 11speed with 10 speed compatibility

I have a Scott S30 bike currently running a shimano 105 2x10 speed 50-34 crankset, shimano 105 10 speed front shifter and 10 speed cassete and chain. I have a new crank that i want to install, the ...
0
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1answer
109 views

Best Gear Shifters [closed]

I am new to Bicycling. I have a question on gear shifters. Mostly the bikes are available with Revo Shifter and EF Fire Shifters. Which one of these are best and why it is?
0
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1answer
67 views

The spring in my front dérailleur is jammed

My front derailleur is jammed by dirt (grease + fine dust), because of this the gear doesn't shift perfectly and chain is thrown off the cog. The spring is a bit unreachable because the derailleur arm ...
0
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0answers
94 views

How can I prevent “chain suck”? [duplicate]

I know what the above is: when your chain bunches when you change gears & the bunch runs through the front derailleur and wrenches it. This damage is pretty much irreparable, and has cost me far ...
-1
votes
1answer
3k views

Specific 10 speed chain models that work well on 9 speed Shimano rear drivetrains

I maintain several 9-speed (rear cassette) road bikes (Giant OCR 1/2/3, Tiagra and 105 from 2000-ish era) and one 10-speed rear cassette 105 road bike, made in 2007. I'm trying to find out if I can ...
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votes
4answers
119 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 ...
-2
votes
3answers
110 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 ...
-2
votes
2answers
279 views

What to upgrade to achieve a higher top speed?

I enjoy going fast and my current bicycle tops too early, what kind of upgrades would I need to make to achieve a taller final gear?
-2
votes
2answers
112 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 ...
-2
votes
1answer
71 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 ...
-2
votes
1answer
113 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 ...
-4
votes
2answers
69 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
98 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 ...
-4
votes
1answer
120 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
90 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 ...
-6
votes
2answers
90 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 ...