Mechanism to move the chain from one sprocket to another.
1
vote
1answer
185 views
34.9mm front derailleur on steel frame?
Can I fit a 34.9mm front Shimano derailleur on my steel frame? I understand that steel frames are narrower. However, is there some sort of adapter that I can use, or can I even wrap the frame around ...
3
votes
1answer
348 views
What can be used to replace a Shimano 105 5600 long-cage derailleur?
I have a Fuji CCR3 with a triple in front, 9-speed casette in back. It came with a Shimano 105 5600 derailleur, but no local shops stock those. I've also been told that the 5600/5700 are 10-speed ...
3
votes
1answer
629 views
9 Speed Road STI + MTB Derailleur
Apologies if this is is obvious or has been answered before.
I'm looking at setting up a touring bike, using road STI levers (Shimano or equivalent, looking at Tiagra 3x9 or possibly the Microshift ...
2
votes
1answer
252 views
How can I adjust index shifter so it doesn't skip the second chainring?
I recently replaced my chain and cassette on my commuter bike. It was a first time operation for me, as I am a new to doing bike maintenance. That part seems to have gone fine. While I was at it, I ...
3
votes
1answer
225 views
Short cage derailleur: how to find out maximum sprocket differences?
I'm building a kind of new bike and would like to put a triple or compact crankset on it.
I've still got this NOS huret derailleur set (front, rear and shifters) laying around which would match the ...
0
votes
2answers
210 views
the derailer is touching chain and it won't let me go past 14 speed supposed to go 21 speeds
The derailer on my 21-speed bike looks like it's bent. It won't let the chain go onto the 3rd ring of the front derailer so, no I can't shift past the 14th speed. If I try it makes a loud sound, like ...
1
vote
2answers
501 views
Installation of the simplex SX410
The Simplex SX410 rear derailleur on my bike was dirty, so I got it off to clean it.
Yet, now I can't quite seem to get it on again in a correct way.
Specifically, I can't get the spring to be ...
4
votes
3answers
1k views
Replacing the front derailleur: unlink the chain?
If I want to replace the front derailleur on an already set up bicycle (replace SRAM Apex with SRAM Force), do I have to unlink and relink the chain on order to thread it through the FD cage? Or can I ...
3
votes
3answers
1k views
Does a rear derailleur guard provide effective protection?
I recently caught my rear derailleur on a log and snapped it in two. I have done some recent work on some department store bikes and noticed that some come equipped with an axle mounted guard around ...
2
votes
2answers
256 views
Can I use a derailleur hanger in my old frame?
I'm trying to adapt an old '83 Fuji Del Rey frame with the parts of my broken '86 Fuji Espree and I'm having problems adapting the Derailleur.
The Del Rey frame doesn't come with the little hook ...
1
vote
1answer
360 views
Need help choosing compatible rear derailleur, cassette & chain
I just "inherited" a bike that has no rear derailleur or chain. It also looks like the cassette is pretty worn, so I'm thinking about replacing that too. I've looked around on the forum and I think ...
3
votes
1answer
187 views
Specialized Hardrock rear hanger
I just fixed my first puncture on a recently bought Hardrock (Evans)and discovered that the rear hanger is not attached to the frame. This made refitting the wheel a bit of a struggle.
There is a ...
2
votes
3answers
714 views
change derailleur and shifter in an old road bike reconverted to hybrid
I have an old road bike, that I converted to a hybrid bike, I just use it for small tourings. Some time ago I changed the handlebar, the brake levers and the tires.
Recently the derailleur broke up, ...
5
votes
4answers
11k views
Can a rear derailleur be used for either a 9 speed cassette or 10 speed cassette?
I currently have a 9 speed 11-25T cassette on my road bike. I'm thinking about switching to a different cassette with more teeth on the climbing gear. The cassette I'm currently look at is a Shimano ...
4
votes
2answers
448 views
Determining which derailleur hanger is compatible with a frame
When your derailleur hanger needs replacing, is there a good resource for matching frames to hangers?
Mine was recently bent, so I had to dig through some websites and compare pictures of the hangers ...
2
votes
1answer
294 views
Front derailleur doesn't change from grear 1 to gear 2
I have a Shinamo Tourney front derailleur that doesn't change well from gear 1 to gear 2 (I'm new to bicycles so I don't know standards, so I think I should specify that gear #1 is the smallest).
In ...
1
vote
1answer
396 views
Is an Acera cassette compatible with an 8-speed Deore rear derailleur?
Is this Shimano Acera 8-speed cassette and chain compatible with a Shimano Deore 8-speed rear derailleur on my mountain bike?
0
votes
2answers
197 views
Unable to change from 14th to 7th
I've got a bike that I have had for about 8 weeks and it has already been back to be serviced twice. It's just returned from the second service and I've noticed that it is not shifting from 14th to ...
0
votes
1answer
160 views
Chain fell out of rear derailleur when wheel off.
I took my rear wheel off to fix a flat and hung the bike up by its front wheel to store. when I returned to put the tire back on the chain had slipped totally out of the rear derailleur, caged jockey ...
1
vote
1answer
341 views
rear Derailleurs of 7 speeds for road bike?
Hello everyone I recently broke my Derallieur in my Road bike and I am planing to get a new one online but I dont know exactly wich one to get is for the rear Derailleurs of 7 speeds.
thanks
1
vote
1answer
298 views
Fitting a rear derailleur
I'm building a bike from old bikeparts, but i've got a problem. The part that connects the derailleur with the frame doesn't fit, and I thought I would find something on chainreactions, but I can't ...
1
vote
1answer
662 views
Change my Shimano SIS rear derailleur of 7 speeds to a better one?
I recently broke my rear derailleur of my road bike it was a Shimano SIS 7 speeds, so I am thinking if I can get a better one like a sram or deore or I don't know.
Thank you for your help.
3
votes
1answer
347 views
4
votes
3answers
500 views
Where are my barrel adjusters for my shifting cables?
I have a Devinci Caribou I and I was trying to adjust the front derailleur. I got the top and bottom stops adjusted right, but it seems that it doesn't downshift correctly from the biggest cog to the ...
14
votes
4answers
12k views
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 ...
2
votes
1answer
370 views
Converting a short cage derailleur to a long cage derailleur
Is it possible to convert a short cage derailleur (for example the huret svelto) to a long cage derailleur by just taking the lower cage and replacing it by a longer one?
2
votes
1answer
1k views
Which derailleur should I use with a Shimano 7 speed freewheel 14-34T megarange?
Which derailleur should I use with a Shimano 7 speed freewheel 14-34T megarange in order to prevent the derailleur from rubbing the cassette in 2nd.
5
votes
3answers
812 views
Why does my bike stick in low gears?
When I change into a low gear (i.e. onto a bigger cog) on my back cog all is fine. However, when I later change up again the chain sticks on the larger cog. I commute about 10 miles a day and this has ...
1
vote
1answer
293 views
Biopace chain rings and front deraileur rub
Turns out my front chain rings are biopace, after I thought they had disappeared!
I've got a problem with the chain rubbing the front deraileur at a certain point every rotation. I only get this in ...
3
votes
1answer
697 views
Is it practical to replace two sprockets on a cassette?
My bike has 53/39T chainrings and a cassette with 12,13,14,15,17,19,21,23,25 sprockets, but I like to ride up steep mountain roads. Is it possible (without great expense) to replace two sprockets to ...
2
votes
1answer
316 views
What crankset should I buy to suit an 8 Speed Campy freehub?
I've just bought a pair of campagnolo/mavic wheels without a freewheel.
I'm finding it very hard to understand what will fit on the rear hub.
It's English thread, does this mean that any 8 speed ...
2
votes
3answers
985 views
Front derailleur doesn't seem to be moving
I'm trying to troubleshoot my 24 speed hybrid bike. As it was, the front shifter was having very little effect. I would change gears and not much would happen.
When I had a chance to look at it, I ...
1
vote
2answers
550 views
Is it possible to reverse cable direction in Shimano M770 shifter?
I tried to set up the perfect shifter + derailleur. For the last part it is better (for me) to have low-normal version, because reducing gears is essential for me (I bike mostly within city).
So I ...
0
votes
3answers
815 views
Getting a dura ace 7800 derailleur to work with 10 speeds
I have a bike set up with a dura ace 7800 derailleur, specifically listed as a 9 or 10 speed model. I am interested in getting it working in the 10-speed configuration. Two things:
I remember ...
25
votes
5answers
2k views
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 ...
3
votes
3answers
532 views
What causes my chain to derail at the rear when I accelerate?
I recently bought a beat-up old mountain bike for commuting. I've tried to clean and adjust the derailleurs and everything seems to work well enough in my garage. But when I put heavy weight on the ...
4
votes
3answers
903 views
Why is there a distinction between friction and indexed derailleurs?
I've seen people make a distinction between a derailleur being for friction or indexed.
Is this distinction somehow functional? I can't see how it could be, because every derailleur I've ever seen ...
1
vote
3answers
1k views
Is there any functional point of using alloy jockey wheels?
Jockey wheels seem like the most pointless thing to upgrade on a bike. I can see swapping out the usual grey ceramic jockey wheels for an anodized alloy one to match the look of the rest of the bike, ...
1
vote
4answers
456 views
is it worth to change slx 2011 rear derailleur for xtr 2009?
I bought a bicycle last summer a Specialized camber comp and it mounts Shimano SLX as rear derailleur. My intention is to change it for a xtr derailleur (from 2009) which is mounted in a bicycle I ...
3
votes
1answer
315 views
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 ...
3
votes
2answers
11k views
How to calculate the capacity of a rear derailleur
It's easy to calculate what capacity of a rear derailleur will be needed based on the size of the big and small chainring and the big and small cog. What about the converse question, how to calculate ...
1
vote
4answers
2k views
How do I know which derailleur I need?
The derailleur on my sons mountain bike is mangled, how do I know what to replace it with?
I understand they aren't one size fits all.
There are 6 sprockets on the rear cassette and 3 on the front.
3
votes
3answers
225 views
Gear shift adjustments
I recently had to replace the shifters on my bike. The replacement was easy enough, but now when I shift the derailleur either jumps too far or too short. I've tried using the adjustment screws on the ...
11
votes
4answers
3k views
Why has indexed shifting displaced traditional friction shifting?
I really don't like indexed shifters, at least on the front. They're harder to adjust, more sensitive to cable stretching, and limit the number of gear combinations you can use (because you can't ...
3
votes
2answers
802 views
campagnolo wheel on shimano or sram drivetrain?
I have a road wheel that has Campagnolo splined hub and 10 speed cassette. I'd like to know if anyone has any experience running a Campy wheel on Shimano/Sram drive train? I know the measurements of ...
2
votes
2answers
3k 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 ...
4
votes
2answers
394 views
Practical benefits of expensive jockey wheels?
Today I had to make a detour to the bike shop as a jockey wheel decided to fly out of a friend's derailleur. The shop were able to supply a replacement retaining bolt free of charge, however the only ...
5
votes
2answers
607 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?
4
votes
7answers
2k views
1
vote
1answer
283 views
ideal dérailleur height for a Deore on 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 ...
