Mechanism to move the chain from one sprocket to another.

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1answer
1k views

Stuck and stiff sora front derailleur

I have a used 2011 trek 1.2 compact road bike with a stiff Sora FD-3400 double front derailleur. Shifter seems very stiff, and when I shift above the second index (trim or third) by accident it gets ...
2
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3answers
1k views

Shimano 105 rear shifting issues

I'm disappointed with my new Cannondale and it's 105 group, I expected this to be a major upgrade from my previous trouble free bike with the bottom end group set. It's done about 500 miles, had new ...
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0answers
12 views

Cannondale H400 1993 derailleurs

I would need to replace my derailleurs and I would like to upgrade both front and back. Front is triple 30, 40, 50 and rear is 13 throught 30. Both are Shimano Altus A10 with Rapidfire Plus ...
2
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2answers
50 views

Road Brifters with MTB Derailleurs

I've just bought a lovely Surly touring frame and I simply stuck all of my mountain bike components on it. That means I've retained a flat handlebar. I'd really like to stick drop bars on though and ...
1
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3answers
70 views

Front derailleur never alligned

So I'm working with the park tool tutorial but I've done it a couple of times in the past. When adjusting my Shimano Deore Front derailleur (height and rotation) it lines up great but when I tighten ...
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2answers
185 views

How do I tune up the shifters/derailleurs on my mountain bike?

I have a Diamondback mountain bike with Shimano shifters that I bought used last summer, and over time the shifting has gone out of whack. For example, on the front wheel I can't shift into the ...
1
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1answer
176 views

How can I fix my rear derailleur's B-tension adjustment?

I've noticed that my rear derailleur (Ultegra 6700) will not return to where I've set the B-tension adjustment. Pulling it away from the hanger means it will just stick there, or maybe move back a ...
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2answers
21 views

Trying to find Derailleur hanger for Triace A310

As you can figure out from a quick google search, this bike almost does not exist. Finding info for this bike has been near impossible. If you can direct me to any info about which hanger I need to ...
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1answer
3k views

How do I tell if jockey wheels need overhaul or replacement?

I am refurbishing a bike and am deciding how much to clean out the rear derailleur. It's in pretty good shape. But after I take off the chain, I tried spinning the jockey wheels with my fingers ...
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2answers
232 views

Can't shift to gear one or two

I had an issue where every time I put my bike in gear 3, it would just keep "skipping". By this I mean that it wouldn't stay in gear 3; the chain would go onto it, then fall onto gear 4, then go back ...
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1answer
83 views

Front shifter has three positions, but front chainring is only double. Is this a problem?

My Merida Cyclocross 3 bike has a double chainring at the front. After a few weeks of being a little annoyed about the awkward shifting when going up steep hills, I realized that the front shifter and ...
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2answers
75 views

10 speed cassette/derailleur, but only getting 9 clicks?

I've got a 2013 Giant Escape 0 Hybrid with a stock 10speed Shimano Deore rear derailleur. My wife was riding the bike the other day, and somehow managed to shift in such a way that it popped the ...
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2answers
81 views

Shimano Claris shifter double/triple shifting up (when moving to smaller, harder cogs) on the rear derailleur

Although my rear derailleur is properly indexed it's suddenly started to double or even triple shift on an upshift - i.e. when moving to harder, smaller cogs on the cassette. This happens whether I'm ...
21
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9answers
6k views

Is there such thing as an automatic transmission for bikes?

Has anyone ever designed or manufactured an automatic transmission (or automatic shifter?) for cycling? I imagine such a device would automatically change the gearing to allow the rider to maintain ...
6
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2answers
1k views

is this derailleur short cage or long cage?

I'm selling the rear derailleur off this bike, and someone asked whether it's short or long cage. I assume it's long. Is this correct?
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1answer
38 views

Not sure which limit screw is H vs L

I'm using a Devinci silverstone s.1 that's having trouble getting up to the highest/largest gear on the front. I checked the tension and it didn't seem to make a difference. Read I should check ...
1
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3answers
187 views

Campagnolo Crank Compatibility 11 speed crank to 9 speed chain/deraillieur/shifters

I need to replace my 9 Speed Campagnolo Racing T Crank with a new one which uses the power torque system. Is a 11 Speed Athena (or 10 speed Centaur) crank compatible with the racing t front ...
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2answers
1k views

Campagnolo QS Front Derailleur/Shifter Compatability

I have older Campagnolo Chorus 10-speed shifters. They are marked 'Carbon BB System'. I am replacing my front derailleur and have a spare 10-speed Record QS front derailleur. QS stands for Quick ...
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2answers
46 views

Campagnolo Athena - Lost plastic part on front derailleur. Now the chain is droping on upshifting

Somehow the plastic part on the side/front of the derailleur is lost. Now I can't shift properly because the chain drops to the outside on an up shift. The plastic part is visible in this image. Its ...
1
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1answer
90 views

what lubricant should I use?

The Jockey and idler of my derailer, are not spinning as freely as I would like. What type of lubricant should I put on these derailer pulleys to make them spin more freely?
1
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1answer
91 views

Touring Drivetrain Dilemna

I own a 2015 Specialized AWOL Elite and love it except when I am fully loaded and lumbering up a pass. I'm looking for a way to get more range without completely replacing my drivetrain. This ...
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2answers
41 views

Chain Slip at front changing from large to small front chain wheel (with large cog at back)

I have a Pinnacle Neon 3 Hybrid, Shimano Sora 9 speed cassette and 2 chainrings at the front. The bike is 2 weeks old and I've cycled around 65 miles so far. Chain ring has come off 3 times at the ...
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5answers
2k views

Why do current, entry-level shimano rear derailers have large-diameter pulleys?

I have seen (and recently bought) entry-level rear derailers from Shimano (Tourney for MTB, 2300 for road bike), and I keep wondering why they are making these parts with such large pulleys. I don't ...
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7answers
28k views

Problem with chain skipping without trying to shift (even with new chain and gears)

I have a mountain bike where the chain intermittently skips when put under load on the middle (and very rarely on the smallest) chain ring. It is not related to shifting. I've taken several steps to ...
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1answer
54 views

mix left shifter and font derailleur of different speed

I have a Shimano 5700 front derailleur and 5700 flat bar shifter (left) but for some reason I can't use the FD on my frame (too narrow, my driven train is 9 speed). After lot of research some people ...
3
votes
1answer
66 views

Indexed rear derailer shifts two cogs for each step

I'm trying to troubleshoot poor shifting issues on a mountain bike that appears to have been built out of the spare parts box… The current problem is "instability" on the rear derailer – the chain ...
3
votes
2answers
8k views

Road Shifters, Mountain Rear Derailleur?

I have a road/cyclocross/commuter frame that is currently spec'd with road components - all Shimano 105, with an Ultegra rear derailleur. The cassette (10 spd) tops out at 27 teeth, and the rear ...
2
votes
2answers
392 views

Can I replace my Shimano RX 100 with a Campagnolo group?

I just purchased a Concorde Mistral with Columbus Gara tubing and would like to transfer my Campagnolo group from an SLX frame that is too big. The Concorde frame has a front derailleur mounting ...
0
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1answer
113 views

My calf catches my derailleur when I pedal

I wore cycling shorts for the first time since purchasing my Ridley Liz and I found that my right calf was catching on my derailleur to such an extent that I ended up with no skin left on my leg. Is ...
2
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2answers
179 views

Shimano short cage rear derailleur capacity

Can an Ultegra or 105 short cage RD handle a 30T ?
2
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1answer
661 views

ideal dérailleur height for a Deore on non-round/oval Cranksets (e.g. a Biopace)?

Reading on every site about front dérailleur adjustment, the distance from the bottom of the outer dérailleur plate to the bigger crank cog should be "one penny". Mine is around 1cm! it does shift ...
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2answers
3k views

Can I change my 7-speed rear derailleur to an 8-speed?

I bought a 2013 Cannondale Quick 6 Hybrid for my daily commute almost exactly a year ago, and I'm looking to give it some upgrades. It currently has a 7-speed Shimano Altus derailleur, and I was ...
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0answers
53 views

Considering Cassette Upgrade [duplicate]

I'm considering upgrading from a 9-speed, 12-26 cassette on a 2006 Lemond Alpe D'Huez. I have a triple front chairing with a Shimano 105 groupset, with one exception - an Ultegra rear derailleur. ...
5
votes
2answers
101 views

3 Speed Front Derailleur can't reach small gear

I bought a new frame and put my old Campagnolo Racing T components on it. The seat tube has a diameter of 35mm and I use the Campagnolo 35mm clamp for the Racing T derailleur. The problem is the ...
0
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1answer
68 views

Need help picking the right rear derailleur and chain for Giant Escape 2

Product page for the bike i have: http://www.giant-bicycles.com/en-us/bikes/model/escape.2/14810/75679/#specifications I'm not able to make sense of the variations of shimano altus derailleurs, ...
3
votes
1answer
86 views

Shimano 105 front derailleur cage won't move at all

Got a brand new shimano 105 FD double. I put the chain on the small ring and when I adjust the limit screw the cage can't go towards the frame enough so that the chain can't go to the largest rear cog ...
5
votes
2answers
455 views

Replace rear deraileur without breaking the chain

I currently have a Shimano Dura Ace 10 speed rear derailleur with a 12-25 cassette. For some hilly rides I'd like to change to a 12-30 cassette. The maximum the rear derailleur can handle is 28, so ...
10
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2answers
10k views

Chain slipping off derailleur jockey (need suggestions ASAP)

Last week, I had to abandon a training ride due to my chain slipping off my rear derailleur jockey wheel. This would only happen when shifting, and most often when either shifting chainrings or ...
0
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2answers
124 views

Bent front-derailleur

I biked to school today with my bike in perfect condition. Locked it up and went to class. When I went to my bike a couple hours later, the derailleur was bent out of position. My bike's front gear ...
2
votes
2answers
81 views

How to re-tension front derailleur cable

Bike is a mid 80s Miyata with early Shimano 105 components. It's a 10 speed, 5 speed cog and 2 chain rings. I recently had my front derailleur set up again by a good mechanic after it stopped ...
1
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1answer
60 views

Why is part of this Derailleur loose? (Sun Tour Cyclone II)

As you can see from this picture, part of my Derailleur is loose. Notice how the gear is not in flush with the cylinder. It has a no other parts (that I can find!) than a threaded screw to go in ...
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4answers
425 views

Can a sora 9 speed Rear Derailleur short cage support a 12-36 cassette single chain ring 56T?

My 20 inch folder has a single chain ring of 56T and a 11-28T cassette, 9 speed Shimano sora 9 speed Rear Derailleur short cage. I want to change the cassette to 12-36T for some hill routes. Based on ...
3
votes
2answers
288 views

Chain with master link / quick connect link doesn't clear rear derailleur

Bought a chain with a master link (packaging said quick connect link), it looks just like this: This bit however won't fit cleanly through my derailleur, it snags on the wall right as it goes onto ...
3
votes
2answers
490 views

Adding front derailleur vs upgrading the rear one on a (ladies) bicycle

What I want to achieve is going from having some gears to having more gears. To be more specific I would like to get more gear ratio range in both low and high end. First of all I tried to look for ...
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3answers
267 views

My front deraileur needs adjustment after every ride

I have a Cannondale Women's Adventure 1 that I got this spring and have been riding on local (paved) trails every weekend. I started off riding about 6 miles a weekend and recently have progressed to ...
1
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1answer
104 views

Shimano XT-Alivio compatibility

I am going to buy a Shimano XT rear derailleur, but currently I am using Shimano Alivio M4000 shifter. I would like to know if these two components are compatible?
3
votes
2answers
308 views

How to adjust cable length on integrated brake/shift levers, when there is no barrel adjuster?

I feel bad asking this question because I've been doing bicycle maintenance for over 20 years and this seems like a noob question. I was unable to find a Shimano manual to answer this question. I ...
0
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2answers
101 views

Shifting 1>2 does nothing, shifting 2>3 puts me into 2nd. What's wrong?

I'll be in first gear on my front derailleur, and shift up to 2nd. Nothing will happen at all. Then I'll shift up to 3rd, and I'll finally switch into second. 3rd gear is inaccessible. What could be ...
2
votes
1answer
115 views

Lots of chain slack… Time for a new chain? Bad derailluer?

I got home from a short ride up the street today where there was a lot of clicking and skipping of chain links and when I got home I realized my chain had a ton of slack. After looking around on the ...
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2answers
821 views

Can a 7 speed Derailleur work on a 8 speed cassette

Can a 7 speed Derailleur work on a 8 speed cassette I have a extra 8 speed shifters? and a wheel that has a 8 speed cassette.