Questions tagged [gears]
Gears in the drivetrain of a bike.
745 questions
4
votes
1
answer
5k
views
Chain get stuck on front sprocket during pedalling
When pedalling the chain sometimes get stuck on the front sprocket. This happened after I cleaned the gears and replaced the chain. What could cause this?
The purple line is the chain. The circles ...
- 1
3
votes
4
answers
240
views
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 ...
- 131k
1
vote
3
answers
530
views
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 ...
- 524
2
votes
5
answers
10k
views
Rear derailleur doesn't go to smallest cog
I'm sure it is a simple fix to this, but please bear with me.
I have recently swapped my rear wheel on my bike (with an identical one, keeping the same cassette). Upon putting it back in, I noticed ...
- 1
1
vote
1
answer
154
views
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 ...
- 13k
2
votes
0
answers
296
views
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 ...
- 153
49
votes
11
answers
42k
views
What's the efficiency of hub gears compared to derailleurs?
What's the efficiency of hub gears compared to derailleurs? I know that hub gears are not as efficient. Apart from being heavier, how much will I lose in performance if I use hub gears?
- 14.2k
1
vote
1
answer
236
views
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 ...
CommunityBot
- 1
1
vote
1
answer
70
views
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 ...
- 2,331
-1
votes
2
answers
288
views
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
...
- 8,134
5
votes
1
answer
106
views
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 ...
- 17.3k
16
votes
5
answers
7k
views
Is a 1:1 gear ratio the same regardless of the specific gear sizes?
I have a gravel 1by bike with 42t and a 11-42 cassette. I also have a road bike with 50-34t and then 11-34 cassette. My question. When going uphill in easiest gear in both, they would both be a 1:1 ...
7
votes
3
answers
3k
views
SRAM XPLR for a 2x12
Hello fellow cyclists,
Could someone please explain to me why XPLR rear derailer is 1x only? I want to install it on my gravel bike with 43/30 double chainring upfront. What can go wrong?
Thanks!
-----...
- 1
7
votes
2
answers
367
views
No locked off youth gearing restriction for road racing British National Series/Championships
Can anyone correctly confirm (by providing a link to the exact rule in British Cycling rulebook), if the use of locked off gears is permitted in Youth (A, B and Junior) National level series or ...
- 141
3
votes
3
answers
6k
views
Need help understanding my grip shifters on my handle bar
I am new to mountain bikes and recently bought the Apollo Phaze bike. I was wondering if anyone can help me understand the functions of these gears and when to shift them. For example, when commuting ...
- 1
7
votes
6
answers
1k
views
How to create a bicycle that rolls backwards when you pedal forward?
This may seem like a crazy question, but I am currently trying to design a kinetic machine where pilots are facing away from the direction of motion, adding whimsy and curiosity. As someone who doesn’...
- 8,134
28
votes
4
answers
76k
views
Help Me Understand My Bicycle's Gears
I've recently started commuting with a bicycle (Giant hybrid bicycle). I've been trying to learn a little about bicycling to make my commute easier and my time on the bicycle more enjoyable. Please ...
- 2,331
10
votes
7
answers
4k
views
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 ...
- 285
2
votes
2
answers
1k
views
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 ...
- 10.3k
0
votes
1
answer
123
views
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, ...
CommunityBot
- 1
3
votes
4
answers
2k
views
How do I know what gear combinations should work without chain rasp on front derailleur?
I tried adjusting the front derailleur on a 3x10 trekking bike. After fiddling around a long time, I concluded that is probably not possible to make all cogs work with all chainrings. How do I know ...
CommunityBot
- 1
4
votes
1
answer
208
views
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 ...
- 29.3k
3
votes
1
answer
800
views
Clonking sound when pedalling in 5th and 6th gear?
I just purchased a bike, with 7 gears. When I cycle in 5th and 6th gear it's making a clonking noise when pedalling. It doesn't do this noise in any other gear just the 5th and 6th.
My partner said ...
- 976
4
votes
3
answers
2k
views
Options for a super-compact crankset for touring (replacing Shimano 105 crankset)
I plan to use my new Canyon Endurace AL (11-34, 52/36) for some touring and I'd like some slightly more pleasant gears as I'll be carrying some weight (I have a tailfin rack I'm using with it) up some ...
1
vote
0
answers
549
views
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 ...
- 1,081
21
votes
7
answers
6k
views
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. ...
- 8,134
3
votes
4
answers
2k
views
7 or 8 speed cassette?
I'm riding a Schwinn GTX 2 and using it to learn things on. I am new to fixing newer bikes. I've changed to Altus front and rear derailleurs. Now I'm about to put on a gearset of the same. I've got ...
6
votes
7
answers
4k
views
Feasibility of coupling internal hub gear and derailleur
Price considerations apart, would it make sense to install together an internal hub gear and a derailleur?
I was thinking of it as a viable way to avoid having the front gears.
0
votes
1
answer
2k
views
Adding gears to adult tricycle [closed]
I would like to make a 3,6, or 7 speed conversion from my single Grear adult tricycle. How difficult would that be, and would it be very costly?
CommunityBot
- 1
6
votes
3
answers
1k
views
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 ...
- 10.8k
8
votes
1
answer
2k
views
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 ...
- 36k
5
votes
2
answers
955
views
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?
- 36k
3
votes
3
answers
638
views
Alternative gear ratio newbie question: Am I doing a mistake for this commuter?
I have a commuter bike using a 3x9 MTB transmission:
HG61 9 speed 11-32T: 11 / 12 / 14 / 16 / 18 / 21 / 24 / 28 / 32
Deore XT crankset (104MM) 22 / 32 / 44.
I mostly use the 32-tooth middle ...
- 88.2k
5
votes
2
answers
2k
views
Can I run 11-32t on my Bike and 11-28t on my smart trainer using the same bike?
I run an 11-32t on my rear wheel and completely forgot to check the specs of the 11-speed cassette I ordered for my smart trainer. Turns out the one I got for the trainer was 11-28t. Can I run the ...
- 6,747
1
vote
2
answers
173
views
Re-insert Gear Cable Plug / Fitting
My front derailleur wouldn't let me shift to the small chain ring, and after some investigation I located the issue to this plastic plug/fitting/thingy that seems to have popped out of the little hole ...
- 121
6
votes
3
answers
590
views
Vertical Dropout Derailleur Hanger for a bike that did not come with gears?
I have a bike that did not come with gears. It is a rear hub driven ebike with a single speed. Eventually when the warranty runs out, I want to put gears in it and turn it to a mid drive. Now I know ...
- 63
3
votes
4
answers
4k
views
Any history on Viscount bicycles?
I managed to pick this Viscount bicycle up from my local scrapyard along with a 1987 women’s BSA bicycle. Both of these bicycles work. The Viscount has a sticker on it saying triple champion 1981 so I ...
- 21
15
votes
3
answers
9k
views
How efficient is string bike? Is this really a revolutionary bike?
Bicycles are getting evolved with good technologies or methodologies as the period changes. Now, this one bike, so called string bike has been introduced, which doesn't have chain, derailleur but ...
- 2,331
1
vote
1
answer
38
views
Can this Sunrace standard gear hanger be used with a quick release axle?
Can I use a Sunrace standard gear hanger with a quick release axle? The current axle does not protrude enough to extend into the area shown on the picture below which overlaps the frame (and looks ...
- 131k
2
votes
2
answers
518
views
New shifters for MTB to Gravel Bike (Deore M4120)
I have a MTB with DEORE RD-M4120 as the rear mech, and am currently running 10 speed, and am looking at converting this into a gravel bike. I want to put drop handlebars onto this new build, and was ...
CommunityBot
- 1
1
vote
1
answer
2k
views
How to change gears on Triban road bike
So, I recently bought this bike: https://www.decathlon.co.uk/p/road-bike-triban-rc-120-grey/_/R-p-308062
At the front are two cogs, small and large. I did say I was a newbie!!!
At the back are 8 cogs, ...
- 30.4k
2
votes
3
answers
31k
views
105 Shimano 10 speed shifters - compatibility with 11 speed rear derailleur
I am building a bike and I am using 10 speed Shimano 105 shifters.
On the back I am using a 11 speed 105 rear derailluer (because is the only one I have at the moment).
The cassette I am using is a ...
2
votes
2
answers
140
views
Freewheel/gear slipping
I have a new bike which is roughly 6 months old and has not been used much. I've ridden roughly 120 miles on it and the gears or freewheel has started slipping when I'm in the lowest gear while ...
2
votes
1
answer
264
views
Shimano 7 speed shifter with 9 speed drivetrain
Can I use a Shimano Alivio 7 speed shifter with Shimano Deore 9 speed drivetrain? Basically the bike originally came with everything being set up for 7 speed. Somebody switched out my tire/rim and ...
- 6,747
3
votes
2
answers
9k
views
Cable tension for Shimano 105 front derailleur is very tight
I just got a Merida Scultura 400.
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 a lot. Is this ...
- 15.8k
1
vote
3
answers
1k
views
Problem with Apollo Gradient clunky and missed gear changes
About four months ago I decided to get back into riding. I bought an Apollo Gradient mountain bike. I know this is quite a cheap/basic bike but didn't want to spend a lot if I didn't stick with it. I ...
10
votes
3
answers
10k
views
What liquid should I use in an ultrasonic cleaner?
I've ordered an ultrasonic cleaner, to clean up greasy, oily bike parts like chains and cassettes. I want to get them fully clean of contaminants and try a wax-based lubricant.
What kind of liquid ...
5
votes
2
answers
19k
views
How to maintain a Shimano Nexus gear hub?
I have a bicycle with Shimano hub gears (Nexus 7 speed). I would like to know what type of maintenance it needs, besides the normal tuning.
I believe it needs some greasing, but I have no idea how to ...
3
votes
4
answers
1k
views
(racer) Standard vs compact crankset: Increased leverage for same gear ratios true?
I'm a road and mtb regional racer about to have a go at my first road endurance nationals very soon.
I'd like some educated scientifically validated answer on a matter that has been on my mind ever ...
- 9
1
vote
1
answer
278
views
Should I get 7 or 21 speeds for city commute?
I'm 5'10" 95kgs and am looking to buy a hybrid cycle for exercise.
Have never ridden a geared bicycle before and was wondering if I should go with 7 or 21 gears.
My commute would be within city ...
- 131k