Questions tagged [gears]

Gears in the drivetrain of a bike.

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5
votes
2answers
828 views

Help me understand my 8-speed uniglide compatibility issue

I have a Dura Ace 8-speed uniglide rear hub/freewheel marked 'Integrated 8 SIS' and an 8 speed uniglide 14-21T cassette. Two issues - the first being that the smallest cog needs to be a special 32mm ...
5
votes
1answer
249 views

Can you have too many in line barrel adjusters?

Just replacing the shifters on my bike. It had STI shifters and I'm putting thumb shifters on, the shifters have built in barrel adjusters. The bike also came with barrel adjusters on the down tube, ...
5
votes
2answers
3k views

(Automatic Bike Project) amount of torque required to change gears?

I am planning to build an electronically controlled automatic bike transmission for my senior design project. I'm personally more of an electrical guy, so dealing with the mechanics is somewhat new to ...
5
votes
1answer
4k views

Number of gears for a racer

I am looking to upgrade my racer, I currently have a Bottecchia racer from the mid-80s and it has 14 gears. While looking around for newer racers I noticed that a number of them had 20 gears while ...
5
votes
2answers
559 views

Can old, stiff friction shifters be made serviceable?

I've got a few friction shifters knocking around but all seem so rough as to be impossible to use on a bike. Are they meant to be like that or can a service be done on them to get good use out of them?...
5
votes
3answers
1k views

cross chaining 18 speed (2 * 9) bike

I have a 18 speed bike. There are two chain rings in the front and 9 cogs at the back. I am new to cycling and I wish to know which gear combinations should I avoid to prolong the life of the chain ...
5
votes
1answer
170 views

Shouldn't use two extreme gears?

I purchased a new Mountain bike a month ago and noticed after a week or so the gears were starting to slip, this was expected because of stretch in cables and wear in etc so I took it in for a tune up ...
5
votes
2answers
432 views

Gears on a singlespeed frame

I'm building a new bike and have ridden a frame which feels (and looks) amazing. I'm dead set on buying it but it's a single speed frame. Ideally I would like gears at the rear. It has a dropout which ...
4
votes
2answers
5k views

what does a 22 gear bike look like?

I read that road bikes on average have around 22 gears and mountain bikes up to 30-40. But my hybrid only has gears numbered 1-3 on the left hand and gears numbered 1-8 on the right, so my bike's a 8 ...
4
votes
3answers
698 views

What is this thing called that holds the gear shift cable (not the wire)?

There is a small metal part that keeps the gear shift cable in place, so the inside cable can move without the cable hose moving as well. I think I damaged it slightly when making repairs so I need a ...
4
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4answers
2k views

Help understanding effect of Crankarm length on gear ratios

Trying to learn more about bike fit and gearing, and having trouble understanding the effect of crankarm length on gearing. In an article on bicycling.com it states "The relative jumps between gears ...
4
votes
4answers
859 views

Replacing rear solid axle with skewer

Hoping someone can advise. I recently ordered a Saris Fluid2 trainer, which requires me to use a special quick release skewer on the rear wheel.  However, my regular road bike is an old Acapulco ...
4
votes
3answers
411 views

How much of a difference would shifting from a (24/34/44, 14x28) to a (28/38/48, 11x34) configuration make when going downhill?

I currently have a Proton MTB with a 24/34/44 crankset and a 14-28 cassette. I have found the configuration to be lacking when going downhill: The front chain ring doesn't feel stiff enough on the ...
4
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5answers
3k views

Difference between two drivetrains with the same gear ratio?

Given two identical, fixed-gear bicycles, one with a 36/12 gear combination and another with 48/16, will there be any noticeable difference when pedaling these two bicycles? I understand there may be ...
4
votes
2answers
2k 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.
4
votes
3answers
1k views

Maxing out on gears [duplicate]

I have an older specialized bike from 2001 that I ride and race on with a gearing of Shimano 53/39 and 9-speed cassette 12/26. On my regular weekly rides I end up maxing out on my gears and can't get ...
4
votes
3answers
688 views

Adding gears to a childs trike pickle pashley

I'd like to add gears to my disabled son's pickle pashley tricycle. I have made a start by adding a 5 speed casette, but I'm stuck trying to work out how to shift the gears as there is no where to ...
4
votes
3answers
669 views

Half speed internal hub gear?

Rather than resort to radical gears such as a very small granny chainring (such as 20T) and a very large rear cog (40T), both of which can cause some problems for derailleurs as well as other problems ...
4
votes
3answers
412 views

Shifting can't keep up with my acceleration

I noticed that when I really give it hell after stopping or riding slow (I do that all the time on commute), I have to shift two gears at a time in the lower gears, to keep up with my acceleration. I ...
4
votes
3answers
30k 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 ...
4
votes
2answers
1k views

How do I change the granny gear on a cheap Walmart mountain bike?

I have a cheap ($100) 26" Walmart mountain bike (Hyper Summit) that has a triple chainring (24,34,42). It appears there is no easy way to remove the granny gear since it has what looks like some type ...
4
votes
1answer
908 views

Gear cables replacement - inline barrel adjusters

I'm in the process of ordering replacement gear cables for my road bike which has 105-5800 groupset. My existing cables have inline barrel adjusters and I was wondering: Are the inline barrel ...
4
votes
2answers
324 views

When going up hills, my gears drop 2 to 3 slots. Is this my cable tension?

I own an old bike, with the old style gear shifters (levers). I have been trying to get the cable tension right. However, it seems to be getting worse. Whenever I am on a slight incline or just in a ...
4
votes
2answers
627 views

Are there any tricks or pitfalls in timing gear changes?

I have noticed that my bike sometimes changes gears incredibly smoothly—quietly, quickly, very little 'jolt' through my pedals—while other times I get a rough, clunky change. I'm wondering if there's ...
4
votes
2answers
291 views

Derailleur Configuration - Anyone ever seen something like this?

Can't find anything on Google because I guess I don't know what search terms to use. I am wondering if anyone has ever seen a derailleur setup like I have drawn in the picture. It is NOT for ...
4
votes
2answers
154 views

How should I gear a 12" wheel on an adult bike?

Background: A couple years back I built a chopper with a 26" front wheel and a 12" rear wheel. It was a lot of fun, but I had to pedal like mad to get anywhere. Unfortunately I could not find a rear ...
4
votes
2answers
168 views

Poor shifting in dense fog?

I cleaned up my bike yesterday after a particularly wet and muddy week, wiped the oil off the chain, applied a fresh batch, took it for a spin and found no issues whatever with the shifting (I go ...
4
votes
3answers
3k views

Is it typical for the front and rear gear levers to be reversed?

I recently purchased my first bicycle since I was a kid. The bike I bought has individual gear levers for shifting up and down for both the front and rear gears. I thought it was odd that these levers ...
4
votes
1answer
7k views

Why doesnt my chain fit on my cog?

I ride a fixed gear bike and I wanted to change the rear wheel, I'm sort of new to all the bike knowledge but i couldn't find an answer to this. i ride 46 x 18, i don't know if its good or bad, i can ...
4
votes
2answers
3k views

Mounting a 7-Speed Cassette on an 8/9 speed hub

I asked an earlier question regarding putting modern road wheels on my old steel frame. After clarifying a few things the main issue to me is the number of gears on the freehub. (The freehub I'm ...
4
votes
1answer
7k views

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 ...
4
votes
1answer
277 views

how much cable beyond the pinch bolt

I was trying to solder my bike cables because those crimp on's they fall off then the cable just unwind itself. After the painfull process I managed to use the cutting end instead of the crimping end ...
4
votes
3answers
11k views

rear shifter lever gets stuck when shifting gears

All the shifting was working smoothly until my bike fell off to the ground (edit1: to my right side hitting the right side of the bike) with me couple days back. Now after about a week when I took my ...
4
votes
3answers
9k views

Can I drop-in a compact crank set with my current 105 groupset

I live near a lot of hills and am fairly new to biking. In my lowest gear I still can't keep up at an efficient pedal rate on the hills. I found out they sell "compact cranksets" which in addition ...
4
votes
5answers
3k views

Can I pedal my bicycle backwards to move it backwards?

Is there any changes I could do to my cycle so that I can make it move backwards?Just a question out of eagerness.
4
votes
1answer
4k views

Pedals rotate backwards when I move the (rear) wheel in reverse direction

I recently bought a bicycle and am new to biking. So I decided to try it out on an inclined part of the road near my home. as I descended on the incline just after travelling a few metres I heard a ...
4
votes
1answer
324 views

Replace my stock crankset and cassette for a 22-32-42t crankset and a 11-40t cassette on recumbent trike?

I am leaving on a coast to coast tour starting in Florida and ending in California this November. I have a Catrike Expedition with a 30-39-52t Truvativ Elita and a 11-30t cassette with a 26" rear ...
4
votes
1answer
3k views

Back wheel started moving backwards when pedalling backwards

I have a 10 year old cheap 21 speed mountain bike that I have only ever done basic maintenance on (replacing inner tubes, tyres, brake pads, lubricating chain etc). I have just noticed that when I ...
4
votes
1answer
629 views

Is it a good idea to switch to hub gear?

I have a Firefox Roadrunner Pro. I wanted to know if it was a good idea to install an internal hub gear on it. I want to install it to reduce dust accumulation and oiling and to simplify the wheel-...
4
votes
4answers
7k views

What cassete do I need to run with a compact crankset (50/36), to equal the same gearing as running a standard crankset (53/39) with a 11-28 cassete?

Every new bike in my price range comes with a compact crankset, which I want for climbing, but I race and I need to keep the same top speed that I've had for sprinting and descending (I live in the ...
4
votes
2answers
225 views

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 (...
4
votes
1answer
992 views

What are the pros and cons of different types of shifter cables?

What are the pros and cons of regular and slick gear/shifter cables? I just want easy gear changing. I have shimano gears if that helps. I know the difference between them, but I want to know some ...
4
votes
2answers
4k views

How should I select front and rear gears?

Just bought a Falcon Interceptor bike with Shimano gears - whatever that means. I've had bikes in the past but only those with one set of gears for the rear wheel. What's the need for front and rear ...
4
votes
1answer
253 views

What tricks do you use to avoid damaging cables when adjusting the gears?

I was trying to adjust gears, and being my first time, I ended up damaging the cable. I mean that I "smashed" it, the threads became apart, and it was dangerous to deal with it. I replaced the cable, ...
4
votes
1answer
425 views

Should I have a spare cassette or a spare wheel?

I have a road bike that I use for triathlons as well as club rides in the evenings and on weekends. I don't have the bike in front of me, but the range of the cassette is on the low side. I'm more ...
4
votes
3answers
200 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’...
4
votes
1answer
3k views

Downtube shifters won't stay in low gear on rear derailleur

I've finished a bike restoration today and it's my first time using downtube shifters. They work and will span the full range of gears but won't stay in the big cog on the back for long, the shifter ...
4
votes
1answer
762 views

Can you run 52/39 chain rings with an 11/32 cassette?

Seems most bikes either come with 50/36 rings and an 11/32 or 52/39 rings with an 11/28 cassette. I live in hilly terrain and do need lower gears but often feel spun out with my 50/36 by 11/32, could ...
4
votes
2answers
46k views

Why does my bike make noise in certain gears?

I'm relatively new to cycling so this question may be obvious to some of you. When I get into certain gears my chain or drive train makes a noise that I can only to compare to the noise a ...
4
votes
1answer
83 views

Spokes popping, chains jumping gears while not shifting and derailing when shifting, etc

I've had the same Trek bike for 3 and a half years with ongoing shifting problems, but for the last 6 months I've had a litany of problems. My LBS is at their wits end. Spokes are shearing regularly, ...

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