Questions tagged [gears]
Gears in the drivetrain of a bike.
745 questions
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Replace S-RAM S7 gear hub with something better
I have an SRAM S7 gear on my bike, and I'm not content with it. I find it more or less impossible to get the adjustment right. Supposedly I just have to leave the shifter in position 7 and then ...
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Bicycle is Having a hard time Shifting -- especially gears 13 and 14
21 speed commuter bike. Raleigh 2011 brand.
After my gear shifter cable was broken, I took it into the shop to get it fixed. (4 days ago). Ever since, when shifting, it takes forever to actually ...
- 135
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Chain "vibrates" on higher gears
My freewheel that I have installed myself only 1.5 years ago has totally worn out by the moment and so I just had it replaced along with a chain at the workshop. I'm still concerned though about the ...
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Why does my gear slip when going uphill / standing?
I have a road bike that I use to commute ~6 miles to work every day. Some of the portions of the ride are at a steep incline, and I've noticed that when I get up to stand on some of these hills, my ...
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Is my front derailleur angled straight?
I am attempting to adjust my front gears and have also been following a video to adjust the high/low position of my front derailleur.
The issue I am having is that the low adjustment is no where near ...
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Adivce on what to do next with crunching / slipping gears
About two weeks ago I took my bike to the local bike shop to get serviced. It was previously slipping gears under load and at the end I couldn't use the lowest gear going up hill it would just slip ...
- 1,509
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Convert 9 speeed Campagnolo Ergo Levers to 10 Speed
A friend gave me a carbon set of campag record 9 speed ergos. I would love to convert the 9 to 10 Speed and I understand it is possible. I have read that some dealers will do it but the cost is ...
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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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Speed and the sizes of tires/gears
Does the speed of a normal mountain bike vary according to the diameter of the wheels? If it does, will a larger diameter increase the speed or decrease it?
Similarly, if the speed varies according ...
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While pedaling standing up, bike crank gives in as if shifting, what is causing this?
While standing up and pedaling, the cranks give in as if shifting.
It seams like I am shifting down, but my hands are off the shifter, almost like the chain is skipping a link.
I took it to a bike ...
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Are the numbers on a shifter standardised?
My bike has several gears labelled one to six. Do these numbers relate specifically to a certain standard? In other words, would a bike set to say gear four on one bike, perform in the same way as ...
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Rear gears don't turn anticlockwise
I've taken the rear wheel off my bike but the rear gears are stuck and do not spin freely anticlockwise.
It had been out of use for about 4 days, kept in a dry garage. I took the wheel off because it ...
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Rear wheel not centred, presses against one of the brake pads (Rohloff hub, Magura rim brakes)
Upon replacing my rear brake pads, I noticed that my rear wheel is not properly centered.
The consequence is that the wheel is pressed against one of the brake pads, as can be seen in the pictures ...
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Replaced tyre and tube, now the rear gears will not stop
Just put on a tyre and innertube, fits perfectly, but now when I stop pedalling the gears at the back keep moving so the chain just sags down so much that it hits the wheel etc.
Any ideas on how to ...
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Will a 9 speed front derailleur work properly with a 10 speed sprocket?
I am pretty near done my current bike build project, just missing a front derailleur. I can't think of why front derailleurs would need to be compatible with different numbers of speeds, given that ...
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Are faceplates for different shimano brifters compatible?
I got a used brifter and the faceplate fell off. I am pretty sure it was a 105. It works well enough but it looks shitty.
Does anyone know if I can just order whichever shimano brifter faceplate, and ...
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Chain slipping on newish bike
I've looked at most of the answers for related questions and they all speak about replacing parts that are old.
I just bought a new bike from a friend who rode the bike for about a month before ...
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Bike not changing correctly between two gears
I have only recently started riding to work and I've been given a bike by a friend which is in reasonably good shape.
For the way things are working out I keep the front gear in the same position and ...
- 1,509
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What is the impact of changing to a smaller chainring?
My road bike has a Campagnolo Veloce gearset. It's running 53 and 39 tooth chainrings. I have a 13-25 10sp cassette.
I find that a lot of the time when I'm cruising, I'm on the big chainring and in ...
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How to fix problem with mountain bike chain falling off gears?
The chain on my girlfriend's bike came off the front gear today, it looks like the back gear changing mechanism isn't handling back-pedaling properly, whenever she pedals backwards the chain slacks ...
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Has bicycle gearing become 'easier' over the last few decades?
If you look at a 10-12 speed bicycle from the days before indexed gears you have a 27"/700c wheel with a 42/52 chainset and a 14-28 freewheel. At the time such a setup was standard for High Street ...
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Shimano Revoshift repair
My bike has a grip shift (Shimano revoshift) which isn't shifting through all 8 gears. Even with the gear cable removed (it recently broke) it will only shift through half of the gear numbers and ...
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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 ...
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Shimano Nexus Inter-3 internal gear hub stuck in second gear?
The situation My Shimano Nexus Inter-3 internal gear hub is stuck in second gear (it's a 3-gear hub). When I take the external cable housing apart, I can move the pin that goes inside to change gears, ...
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Does gear ratio affect Power?
Let me preface by saying that this may not be the right SE. I considered asking on the Physics SE, but I thought I might try here first. If it is wrong, I am not against it being migrated.
From basic ...
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What are the pros and cons of internal gears?
I've had my hybrid 24-speed for a bit over 3 years now, and just last weekend, when looking for a bike for my wife, discovered internal gears. Suffice to say it blew my mind when I saw 7-speed ...
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What's the deal with the axle of my wheels? (or, why is one gear so much smaller than the other?)
I want to put a smaller set of gears on my bike, but looking at the wheel I see that I already have the smallest gear for my axle. Comparing it to another wheel, I found that the other wheel has a ...
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How to avoid wearing out gears?
I have a Specialized Tricross which I bought new last year.
In that time (approximately 1K miles), I wore out my chain and gears. At least two of my gears are still slipping, even with a new chain.
...
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Can you shift both the front and back gears simultanously?
Is it advisable to shift both the front and back gear simultaneously? Can this cause any damage?
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Heavier Thicker Chains and Gears for Winter due to Salt?
I have two bikes: one having gear-things outside and one with inner-hub. The gear-outside-bike has suffered a lot due to the salt during this winter, the other hilariously looks like a new one. I ...
user652
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Switching from 3x9 Gears to Cheaper Ones?
Alert I am unsure of the right terminology for gear-wheel but I mean the round things near pedals such as 3x9 or typically with 3x7 (3 front, 7 back) mix in commuting bikes.
My current gears are 3x9 (...
user652
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What are the advantage of the different gear shifters
I have just buy for the first time a road bike (Boardman Team Carbon) after long years on hybrids bike and unfortunately due of a injury I didn't have much time to experience with it.
The bike has a ...
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What difference does the range of gear size matter?
I get the idea of ratios and the obvious that a smaller gear on the front and a larger one on the back will give you an easier end result but what difference does the range of a chainset or groupset ...
- 1,263
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Setting chain length
My chain broke and in a moment of silliness (I was cold wet and slightly annoyed) I threw the broken one away before thinking about measuring the new one.
Is there a guide to getting the chain ...
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What's the shortest / easiest "granny gear" available?
What's the range on granny gears - the innermost, smallest front chainring?
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Do you need to lubricate gears after cleaning gears and chain?
I just cleaned my gears and chain with a biodegradable degreaser. I'm going to lubricate my chain. Do I also need to lubricate the gears or do I just pedal and make sure that I hit all gears? Will the ...
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How to fix front gear taking 2 shifts just to move onto next cog
I was out on a ride yesterday and several times when I was changing up and down between big chain ring and little chain ring (I only have the 2 rings up front) it required 2 gear changes. The gears ...
- 2,209
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What range of sprockets is useful in a road bike cassette?
My road bike currently has a 27/39/53 crankset and a 13-26 cassette, both of which need to be replaced.
I occasionally find myself in both extremes—while heading up the very steep hills of the Bay ...
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Gear indicator on SRAM X5 Shifter shows wrong gear
I have SRAM X5 Shifters like this one:
The indicator is now showing the gear above the one I'm actually in, so if like the picture it shows a 2 I would actually be in 1 (the smallest chainring), a 3 ...
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How many effective gears do I have on a 21 speed bike?
I have a 21 speed bike (a hybrid commuting bike). But AFAIK, this does not mean that I have 21 different gear ratios. Is there any way to calculate the different gear ratios?
- 2,892
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Effect of Rear Derailleur Cage Length
What effect does the length of the cage on a rear derailleur have on bike setup/shifting?
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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?
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Chain clicks when the back wheel is in highest and lowest gears
When I have my back wheel gears in either the lowest gear or highest gear, my chain clicks as I pedal.
How do I fix this?
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Should I clean the grease off the gears?
I usually keep my chain well lubricated. However, my gears are usually greasy. Should I be cleaning the gears or are they supposed to be greasy?
- 915
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Perfectly setting up gears - how?
Every time I have my bike serviced, the bike shop sets up the gears on a stand in their workshop. The gears change perfectly on the stand, but when the bike is on the road, the rear derailleur doesn't ...
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