Questions tagged [gears]
Gears in the drivetrain of a bike.
745 questions
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Is there a word for the range of "difficulty to pedal"?
On an older bike I had 21 gears with two blocks of chainrings (one at the pedals and one in the back). Currently I have 8 gears with a shimano system where the chain does not hop on different ...
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How to achieve 24t-38t front chainrings
After staring at many a graph and crunching far too many numbers, I've concluded that a 2x, 24-38t chainring setup would provide the best gear ratios for me. I bike near the edge of a valley with ...
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Simultaneous clang, hesitation and drop when I pedal with any weight
Background: New chain, new bottom bracket, new front derailleur, new shifters, new brakes.
This is a cheap Walmart Mongoose that I'm trying to keep riding and upgraded some of the components recently, ...
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Gear up-shift not smooth
When I am pedaling hard and shift to a larger sprocket, the shift is not smooth or sometimes doesn't happen at all. Sometimes even double up-shifts don't work. There is no problem shifting when I test ...
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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 ...
CommunityBot
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Cannot remove gears/cassette from axle (hub motor)
Cannot remove the cassette from the axle
I have an e-bike with an 8FUN hub motor,
I would now like to replace the cassette as the gears are quite worn.
But I can't get them off.
I have attached a ...
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Do I need a chain breaker tool to install a new chain on my bicycle?
Do I need a tool, or will the chain have the correct length? For example, my biggest cog in the rear is 34T and the biggest chainring at the front is 42T and the chain has 116 links. Is a chain with ...
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Indexing rear gears mountain bike
Bought an old bike to get back on the road, all good until indexing the gears.
It's twist shifts on the handle bars, 7 rear 3 front.
I've replaced the gear cables, sheaths, chain and Shimano parts ...
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Is it possible to change chainrings to bigger on Shimano FC-MT500-B2 (2x10, 36T-26T)?
I'd like to change a chainring for Shimano FC-MT500-B2 crank on my Grand Canyon 5 bike, because current setting (36T-26T) is not enough for me. On my previous bike I had 44T and it was fine, and I'd ...
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Why does my shifter say the wrong gear?
I had a slow puncture in my rear tyre. I fixed it by flipping the bike upside down, removing the rear wheel, patching the inner tube and replacing the wheel. However, I seem to have caused a strange ...
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pedals only move bike at highest gear
Recently my bike will only move if I’m in the highest gear. I can pedal at lower gears but it will not move my bike forward at any reasonable speed and when I get up to even a very low speed the ...
CommunityBot
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Help choosing right chainset / crankset - commuter looking for a faster top speed
I need to replace the chainset on my commuter bike and I'm thinking of a change.
I've currently got Shimano: 28/38/48 front, 11-32 (8 cogs) back.
My daily cycle (north to central London and back) is ...
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Unable to shift to two largest cogs
Just been out on a ride and beforehand it was shifting through all the gears fine but I think I hit a few bumps and heard some clunking and I could not shift into the two highest gears. I did just re-...
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For steep hills, should I train harder or get lower gears?
I’ve just done a 1500km ultra cycling event, the lowest gear setup are front 30t back 40t. Along the journey there are many very long climbs that have more than 10% gradient. To conserve power I ...
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What is this spring for from the rear wheel?
I am trying to take off the magnet light holder from my rear wheel and this spring popped out when removing the red plastic screw and now I can't fit it back in. What is it for? Gears are SRAM S7
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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 ...
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How do I tune slipping gears?
My kid's bike has some gears that aren't working properly (rear derailleur). They "slip". That is, he's pedaling along and suddenly the gear slips as if it is going to change gears, but ...
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How to properly adjust rear derailleur for Wahoo Kickr?
I have a Merida Escultura 100 connected to a Wahoo Kickr (with the rear wheel removed, of course). I've ridden this combination for over a year and had the derailleur adjusted more or less so there ...
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Help! The two-speed gears on my Brompton don't shift anymore
On my 6-speed Brompton the two-speed gears suddenly stopped working. I still can operate the shifter (and the cable still seems to be under the expected tension), but the two-gear “derailleur” (chain ...
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New bike-vibration in pedals
I just bought brand new Scott Sub Cross 10 mens city/crossbike. It has 30 gears and the same day after I bought it I went driving on an asphalt road and started to feel grinding/vibration in pedals at ...
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Changing gear usage of Rohloff gears
I have a R&M Homage with Rohloff e-14 gears. I find I really just use gears 7 - 14. Can sprockets be changed so I would mainly use gears 4 - 11??
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I have a Shimano deore m5100 cassette and have found it doesn’t fit on the freehub body that is on my bike just wondering what freehub body i need
Shimano Deore 11 speed cassette
7 speed cassette to 9 speed cassette
Have removed original 7 speed cassette and tried to fit new 11 speed and the free gun isn’t long enough for all the gears on the 11 ...
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converting to a 48/38/28 oval tech SR Sakae
I am a 72 year old, male rider, 5’11” used to touring with a 52/42/30 triple chainring and 170mm crankarm. Would converting with a 48/38/28 ovaltech SR Sakae help with climbing the grades without ...
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Is there still production of manual gearbox bicycles?
I have found the 1930s Gearbox Bike - Restoration video on Youtube.
This is a 1930's bicycle which was manufactured with a gearbox that you can shift like the one on a motorbike or a car, though there ...
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Is play on the Schlumpf Mountain Drive chainring a problem? How to fix?
There is forward & backward play on my Schlumpf Mountain Drive chainring. Is this a problem? If so, how do I fix it?
When I hold the crank steady, there is back-and-forth play on the chainring in ...
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Why can't the Schlumpf Mountain Drive be used along with the 14-speed Rohloff?
Why is it "not allowed" to use the 14-speed Rohloff in combination with the Schlumpf Mountain Drive?
According to Function-Schlumpf-Mountain-Drive.pdf:
Please notice: the 14-speed Rohloff ...
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New Bike - gear shifter installed on the left and upside down? Easy fix?
New bike (flat bar , gravel bike) came with the gear lever on the left side and upside down. Dropper post lever on the right side of bars, and on top of the bar. Any reason for this, and is it an easy ...
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Derailleur intermittent rubbing
So my front derailleur gets rubbed on by the chain when I give it a good push.
If I have the bike up and just turning the crank or gently pedaling there is no rubbing, but if I put my weight into it I ...
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How can I add an additional freewheel to the existing solid bicycle axle?
I want to convert my bicycle into an electric bike by adding a motor to it, allowing me to ride it using both pedals and the motor. I need to add a motor and a separate chain system, similar to the ...
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How to replace a band (hub, drum) brake with a freewheel
I am looking to convert my bicycle into a semi-electric bike by adding a freewheel. The 2 freewheels will allow me to use either pedals or an electric motor to move the bike. However, I don't have ...
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Cannot figure out how to stop outer edge of front derailleur hitting chain
I have a Giant road bike with Shimano Ultegra gears.
The outer side of the front derailleur is making contact with the chain, on both crank chain rings, when in the highest gear at the rear.
I have ...
4
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Will this chain work on my bike?
I've bought the Shimano HG40 chain which is advertised as a 5,6,7 and I think 8 speed chain. I've just received it and it also says 15,18,21,24. (Obviously including the front gears). My bike is a 2x6 ...
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Can I replace hood covers on Shimano ST-2300 brake/gear levers?
I'm looking to buy a replacement cover on my right brake/gear lever which is a Shimano ST2300.
I've found a 'Shimano Bracket-Cover Hood Dual-Control-Lever R9150/R9170' Road-Bike on AliExpress, but I'...
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My shifters are stuck in the negatives
So I recently bought my first bike. It worked great until winter hit. The gears stopped working and my girlfriend (who bikes way more that I do) said they so that when it gets really cold sometimes ...
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Does effort require to pedal depend on the gear ratio or the gear inches?
I have a 20x1.75" 6-speed folding bike with 52x14-28t drivetrain. Even with the gearing at 52x14, ~3.71 ratio, I can still pedal uphill.
I also have a 700x25C fixed gear with 49x17t gearing or ~2.88 ...
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Gears rattling in the back [closed]
My MTB is making weird rattling noises in the rear. What could be wrong?
I'm in Australia and my bike has sram components.
Picture:
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Bike mechanic told me: Gear cable too "springy"
I bought a new groupset and I tried installing it all myself.
Somewhere I must have messed up, because I could not get it to shift precisely. I took the bike to my local bike mechanic. He told me he ...
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How to change small chainring
I have a bike with a 46/36T crankset (FSA Gossamer Cross BB30) and I'd like to change the small chainring to an even smaller one.
Googling around suggests that the smallest chainring I can get for ...
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Chain drops when shifting up a gear at the front?
I've just gotten a new bike and run into a problem. When shifting from a smaller cog to a bigger one in the front gears, the chain consistently drops.
The problem happens regardless of whether I'm on ...
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Bike keeps suddenly changes gears w/o me shifting
I've noticed that there are times that my bike suddenly changes gears, without me touching the shifters. It usually happens when I'm on a hard gear and I suddenly power out of a full stop, it pops ...
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5 Gears usable out of 6
I have mountain bike which is around 1.5 years old. When I bought it, I used it without any hassles and all was fine. But one day I overshifted the friction shifter and the shifter was bent. Now it ...
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Is the gear cycle a sham? [closed]
Why do I think (and based on my personal observation) that gears in cycles are no better? It just slows down the cycle speed. The effort needed to push the cycle is more in a gear cycle. Considering ...
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Bike chain jumping at lowest and highest gear, fine in the middle
I changed out the shifter housing/cable because I felt some friction, and ever since it seems like I can't get the indexing right. If I set it to work well in the high gears, it doesn't work properly ...
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Loud clunk moving to smallest sprocket
When I shift gears to the smallest sprocket it makes a very loud clunk sound. There's also a lot of movement in the chain, like a bounce. I've taken a video demonstrating this Video of clunk I'm ...
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Moving from Shimano 9- to Shimano 10- speed
I'm thinking of changing 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. But ...
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Is it possible to replace/regear the front cog? My easiest gear is too easy and I want to try for a higher resistance
I have a big-box-bicycle that I ride around the neighborhood regularly. After trying to master the highest gear setting I now find it easy on days where there isn't a breeze, and still manageable on ...
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My bike gears are not shifting and I want to manually get it to stay in 1st gear
My bike doesn't allow me to adjust my gears as it was too stiff. I loosened everything up with WD40 however it still didn't help and now I can't tense up my cable. Please can someone tell me how I ...
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Does this chain seem short? Does this photo indicate any obvious drivetrain issues?
Addition.
Yes this is the large-large chainring.
The shifting is rather poor but I have not tuned high, low and B, tension etc.
Thank you
I recently moved to a larger
chainring.
The shifting seems ...
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Turbo Trainer Cassette vs Bike Gears
I’ve just purchased a Pinnacle Smart Trainer. In addition a 2nd hand Carerra bike.
In my incompetence with anything practical, I’ve not read the instructions. The turbo requires a 8/9/10/11 speed ...
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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 ...
