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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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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2
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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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4
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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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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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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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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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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 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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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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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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2
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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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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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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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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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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 ...
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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 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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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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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 ...
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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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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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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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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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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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Chain rub on chainstay when in smallest front crank and highest gear
I've just bought my son a 2nd hand Orbea MX 27 (thought it was an MX40 but the groupset is consistent with the tech specs of the 2020 27). It was hardly used so doesn't appear to be age / mileage ...
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Cracking noise coming from front gear when pushing on the pedals hard
Usually when the chain is on the biggest gear, whenever I push the pedals too hard, i hear a "cracking" sound from the front gear. I am not sure how to describe the sound, it sounds kinda ...
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0
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Bicycle chain roller diameter size chart?
I'm digging for a while now, and can not find any helpful chart for chain roller diameters e.g. Shimano 8,9,10,11,12 speed. It differs of course depending on the manufacturer and the purpose. We know ...
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Can i replace just the brake on a bike that has a combined shifter/brake lever unit
i’ve just bought a new bike with shifter and brake units together on the handlebars.
i want to replace the brakes with hydraulics from
my last bike (new bike has cable brakes), however i don’t know if ...
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1
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Gear won't change to bottom range if set for top and won't change to top range if set for bottom
Fit the following, all new drivetrain components to my Pinarelo that has Ultegra shifters:
Tiagra 11t-34t cassette
chain
long cage derailleur
derailleur hanger
If I set it up such that the top gears ...
5
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1
answer
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Bike cable tension not consistent when shifting up as compared to down
I'm trying to fix an issue on a (somewhat cheap) newer bike and it's giving me a bit of a run around.
The issue is that when shifting up and down, the alignment is off.
Normally, I could easily fix ...
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Broken gear shifter case. Is it safe to use?
My campag gear shifter is cracked in the plastic. I realised this when changing bar tape.
It works perfectly and may be from a crash a few years ago.
Is it still safe to use?
Thanks for all opinions
...
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Why do front gears become harder when the cassette becomes larger but opposite for the rear ones?
I noticed on mine and other road bikes that the "big" front gear becomes "harder" (more distance per revolution) when it switches to the bigger cassette. That makes sense, larger ...
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Gear combinations for 3×7 Raleigh CHESTER 21 2022, frame size 50 cm
Continuing Which gears combinations shouldn't be used? and How do I know what gear combinations should work without chain rasp on front derailleur?, which are rather generic questions and answers, ...
user69411
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Shimano 105 - Shifter Internal Lever Broken
I've managed to snap an internal lever (it looks similar to the one on the right side in the pic) in my Shimano 105 (11-speed) right shift - think I just pushed it too far over and it snapped. I can't ...
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choosing the right gear ratio
I am due to a new set of chain rings and chain on my bicycle (which I bought second hand).
The current gear is:
Front: 53/39
Rear: 11/28
I used to be a competitive racer wich made these gears also ...
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0
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Adjusting road bike to Wahoo Kickr: is this chain noise from cross-chaining, or do I need to index the gears?
I've got an 8-speed Mérida road bike (that is, 2x8, 2 front, 8 rear) that I'm fitting to a 2020 (v5) Kickr that I just bought new. I am learning about some bike mechanic stuff that despite many years ...
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14 "Trashed" bikes acquired for free. Worth repairing and reselling? What do I look for?
Very new to this, bike repair specifically. I tried my best with the tags. I'm mechanically inclined, like to tinker, and have many tools (not bike specific). Learning and time aren't really an issue. ...
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My bike has a 10 speed cassette. MTX hub motor takes 9 speed cassette can I remove last cog of my cassette without issues?
I need some advice. I have a Giant Anthem 2012 dual suspension bike. And want to put a 1500 watt 26" MTX cassette type rear hub motor onto it. I believe the MTX wheel can take up to a 9-speed ...
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Improve my hill climbing gear ratio on my Cannondale CAAD8
I own a Cannondale CAAD8 and absolutely love it. However it's not the greatest hill climber and I am considering on getting a bigger cassette to improve my ride experience on hills
The current bike ...
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Struggling to install Shimano CS-R8000 cassette
I'm replacing the cassette and chain on my Cannondale Synapse 2016 bike, and really struggling to understand where the spacers go on the cassette. No combination seems to work properly when changing ...
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SRAM 53/39 along with 10/33
Can I run my old SRAM cranks (53/39) along with new 12 speed Force axs 10/33 cassette or do I have to run new cranks too?
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