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Questions tagged [derailleur-rear]

Questions referring to the derailluer responsible for moving the chain along the cassette

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2answers
33 views

Deore RD M592 with old school shimano trigger shifter

I have an old school Devinci Coyote (2002) whose Alivio rear derailleur is having trouble shifting properly. I was wondering if I could replace it with a new Deore M592 without having to change the ...
1
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2answers
43 views

What replaces Shimano Deore LX rear derailleur RD-M570?

They stopped making my current derailleur in 2003. I need to replace it. How do I choose a replacement part? A good answer will tell me a specific part (with part number) that will replace the RD-...
1
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1answer
30 views

SRAM Apex 1 doesn't upshift

I have a Boardman CXR 8.9, everything stock except for new mech hanger. It has a 11-42 cassette with a 11 speed 1x drivetrain. It's Sram Apex throughout, no mixing and matching like in other questions....
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2answers
317 views

Upgrading From a 9 Speed Sora Derailleur?

I bought a bike on Ebay which has a Sora groupset. The rear derailleur is noisy and jumps in and out of gears despite much tweaking. I've given up on it. What derailleur can I buy that will work as a ...
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3answers
129 views

Change Derailleur on CX Bike

I have a Giant 2013 TCX Advanced. It has a Rotor 3DF, 36/46 Crankset and a SRAM XG1190 11x28 cassette. I'd like to swap the cassette for an 11-40 or 11-42. The guys at Wolftooth said: "..derailleur ...
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1answer
98 views

Why did my rear derailleur fail in the middle sprocket?

Yesterday, I replaced my cassette and chain, having ridden the previous ones through the winter, and re-indexed my rear derailleur and checked the limit screws. Today, I had ridden slightly less than ...
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0answers
63 views

Can't get in first gear on Shimano ten speed block

Just replaced drive chain on mtb ... new cassette (Shimano 10 sp ) new chain (Shimano 10sp) new rear mech (Shimano 10sp long) and new (Shimano 10sp). I've set bottom stop tensioned cable and adjusted ...
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2answers
82 views

SRAM x5 derailleur fitting

So I am a complete novice when it comes to bike maintenance but working on a project mtb, old Saracen rufftrax. The rear derailleur was knackered so fitting a new SRAM x5, my question is do I need to ...
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3answers
114 views

I replaced my rear hub, but I'm not sure about how to attach the derailleur

I'm new to working on bikes and have been unable to find an answer via the internet, which, too be honest, is probably really simple. I got a bike just for riding around the city that had a cheap hub ...
2
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0answers
65 views

SRAM eTap rear derailleur chain drop issue

I’m having an issue with my chain falling off the lower pulley wheel when (1) I hit a significant bump or (2) shift from large ring to small ring. But only in cogs 6, 7, 8. Any suggestions? I’ve ...
1
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1answer
85 views

Pros and cons of long and short derailleur cage?

I'm thinking of buying a new derailleur in the future, but I don't know what type of derailleur to buy, there's long and short cage derailleurs but is there any differences? I'm not sure if this ...
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4answers
2k views

What options do I have if my rear derailleur breaks when I'm out on a trail?

I ran into an unfortunate situation earlier this week. I was out on a mountain bike trail, alone — just me and my hardtail. I'm pedaling, when I suddenly hear a CRUNCH and my bike stops. The hanger ...
6
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1answer
380 views

Eagle chain B-gap adjustment without plastic tool

SRAM makes this plastic tool for adjusting the B-gap on their Eagle derailleurs. My question is, if I want to measure this distance without this tool (say with a caliper instead), how should I go ...
3
votes
2answers
568 views

Sunrace 10 Speed 11-46T cassette rear derailleur compatibility

I would like to know: What rear derailleur (RD) was the "Sunrace 10 Speed 11-46T" designed to work with. Is there a compatibility chart ?
2
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2answers
427 views

Momentum of rear derailleur wheels?

I have new derailleur and I am somewhat surprised that when I try to spin it with hand (no chain is mounted yet) it basically has no momentum, it almost immediately stops. Almost any other spinning ...
3
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2answers
92 views

Rear derailleur has trouble switching gears on the way up, but works perfectly on the way down?

I noticed an issue with my gears switching recently so I decided to try indexing them. I've gotten to the point where going from the smallest cog to the largest works perfectly, but in the other ...
2
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2answers
56 views

Halfway through changing rear gear out cable

I stupidly started changing the outer casing on my rear gear without having cable cutter ready. Suffice to say I've messed up the cut and now I can't get the gear cable though the outer casing. My ...
1
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1answer
66 views

Servicing/tensioning a rear mech

I have a Tiagra 4600 10 speed rear mech (mid length) which is sluggish to shift into higher gears. Shifting was all over the place, I’ve replaced the jockey wheels and checked the hanger alignment. ...
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1answer
80 views

How to keep a component “pressed” so the chain remains hooked?

I am really at a loss of words to describe my problem, so apologies in advance for the poor choice of words in the title. Basically I have this component at the rear wheel (which I think is called ...
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2answers
106 views

Installing SRAM X3 7-speed shifter with Acera derailleur : shifting stops at 4th cog

I've never installed one of these trigger shifters. Here's what I'm doing: Acera derailleur has chain on the smallest cog. Mount trigger shifter on handlebar with its gear set to 7. Run cable to and ...
1
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2answers
80 views

Will any Shimano mountain bike shift cable set work with any Shimano mountain bike derailleurs and shifters?

(Forgive me if this question has been asked before - but I don't know if I'm searching with the correct keywords to find the answer...) My rear derailleur cable is stuck hard into the side of its ...
2
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1answer
205 views

Road STI with MTB Derailleurs

Not that this question hasn't been asked to death but I'm experiencing very poor shifting, here's my setup: Shifters: ST-5700 (10-Speed Road) Derailleur: M6000-SGS (10-Speed MTN) Cassette: Sunrace ...
2
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1answer
165 views

My Shimano Tourney RD-TY22 7–21 speed bike rear derailleur mech, direct attach has broken, need a replacement, preferably newer

To cut a long story short, I have a full suspension mountain bike. Its rear derailleur mech (see title) is broken, had a trip round the spokes and age has degraded the main springs. I therefore need ...
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1answer
99 views

Shifting issues

I just finished some repairs on my bike, (Mongoose 26" 21 speed). I noticed that for some reason when I try to shift using the shifter, it won't shift to the lower gears. I can't get past seven. I ...
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2answers
135 views

Acera rear derailleur / freewheel compatibility

I'm looking at buying an e-bike conversion kit with a rear geared hub motor that requires a freewheel. On my current bicycle, I've an 8 sprocket cassette (Shimano HG CS-HG41-8an) and my rear ...
3
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2answers
195 views

What type of rear derailleur is used on my bike?

Direct mount or hanger mount? Sooo, one glance at these photos will tell you why I'm asking this... Needles to say, I need a new one and I'd like to know what I should be looking for. It's for a 21-...
1
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1answer
73 views

Replacement rear derailleur

Recently damaged the rear derailleur on my old city bike - the derailleur is a Shimano integrated 6-7 SIS Max 28t - which is no longer manufactured. I can get a used replacement via ebay but was ...
3
votes
2answers
134 views

Is it possible to service rear derailleur pulleys?

The outer pulley of my RD-M735, when spun, sounds scratchy and feels slightly grindy as if there is a tiny piece of dirt/grit that has fallen inside. I have literally soaked it in WD-40 and then 3-in-...
16
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4answers
3k views

10 gears to singlespeed

My second hand Hercules bicycle came with 10 gears. Two gears in the front and five in the back. The gearshift does not work well and since I cycle in the same gear all the time anyway, I consider ...
2
votes
2answers
343 views

Can I put a hanger derailleur on a direct mount frame?

I have a road bicycle whose threads for the direct mount derailleur are stripped in the frame. Is it possible to use a hanger derailleur instead? Are there other options?
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2answers
378 views

Rear derailleur cage hits largest cog on cassette

I got a new rear derailleur for my wife's bike after a stick turned the original one into a twisted mess of metal. The derailleur is a Shimano Acera, the cage is slightly longer than the original. ...
2
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2answers
6k views

Cannot shift into lowest gear

I've been fiddling with my rear derailleur trying to fine tune it, because I just replaced my entire drivetrain (same components, but new) The problem that I'm facing now is that I can't seem to ...
2
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2answers
187 views

New derailleur - shifts up smoothly, or down - but not both

I've just replaced the rear derailleur and cassette on my bike. I have Shimano Tiagra 9 speed shifters. The cassette is now a 9 speed 11-32 and the derailleur a Sora RD-R3000-GS. I've set the limits ...
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5answers
730 views

Remove old non-indexed levers for gear changing to make “fixed” speed bike?

I recently got an old bicycle for the sole purpose of using it on a trainer. It has old non-indexed levers for gear changing and they don't seem to work OK. The front one slips into lower after a ...
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2answers
1k views

Why is cross chaining 'bad', but 1x is OK?

When you run 1x, aren't you basically force to cross chain?
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3answers
362 views

What are the causes of rear derailleur chain noise?

My rear derailleur is making some noise and I'm having trouble diagnosing the cause. It seems like it's coming from the rear cogs and sounds similar to chain noise. I'm re-building my bike after an ...
3
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2answers
232 views

Best Way to Upgrade My Bike

About three months ago I bought a second hand bike for £70; to be honest it is reasonably good. Current setup for gears is a 2 x 18 (38-48 front, 13-28 rear). As far as I can tell it's not a branded ...
13
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2answers
876 views

Bike chain slips in a strange way

I bought a new bike about a month ago. And it made a strange sound from the first ride , I thought the sound was because it was new and will disappear with time but it didn't. The sound is like a ...
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2answers
251 views

Is this regular chain/pulley noise or is there someting I should check/adjust?

Extra images I'm 99% certain the noise is coming off one or both of the derailleur pulleys, but not sure if it's to be expected or if it's irregular and something that should be fixed? Edit Just ...
2
votes
1answer
2k views

Ultegra 6800 shifter with R8000 rear derailleur?

I'd like to replace a Shimano 105 5800 11-28 cassette on one of my bikes (CAADX 2016) with a CS-HG800-11 11-34 to get a wider range of gears. My rear derailleur is Ultegra RD-6800-SS, which can't ...
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3answers
143 views

Rear derailleur moves to much for each click - tried everything

Two years ago I build a bike (flat bar) with SRAM 1x11. Around a month ago the rear-derailleur broke (guide pulley broke). I bought a new rear derailleur: Shimano 105 RD-5800-GS. After installation ...
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1answer
68 views

Derailleur tension causing chain friction?

I have a foldie which recently seemed a bit harder to pedal. Specifically back pedaling seems harder than it should be (if I kick the pedal back, it barely travels a quarter or half turn. I noticed ...
3
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3answers
81 views

Replacing Spark 720 2015 derailleur + hanger using markings

Broke my rear derailleur a week ago along with the hanger. On my Spark 720 year 2015, the old hanger said 142-RWS12 IDS-SL so I ordered a new one from eBay: https://www.ebay.com/itm/SCOTT-23528...-/...
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2answers
399 views

Bike shifts well for low gears OR high gears - but not both

I have been having issues with my 9-speed rear derailleur and was hoping somebody could help shine some light on it. Thanks in advance! I can adjust my rear cable tension such that either the few top ...
3
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1answer
305 views

Parking rear-wheel first: which sprocket to put rear derailleur in?

So, I want to keep this from happening: To that end, I like to park my bicycle rear-wheel first, which was discussed in answers to this question, where I'm taking the images from. Since almost ...
3
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1answer
468 views

Will Shimano M6000 Rear Derailleur SG (medium cage) work with cassette other then 42t?

I was thinking about buying Shimano Deore groupset to upgrade my ride, checking both older M610s and newer M6000s. The hitch is I want 2x10 set commuter flavor. That means narrow ratio cassette, like ...
2
votes
1answer
83 views

Can I upgrade a Hercules Dirtrider 26" with gears and a disk brake?

I found that dropouts are needed for derailleur setup & fork space>120mm...can I install any hanger or weld a dropout to the frame?...and also the fork end gap was around 105mm in wheel fitted ...
4
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2answers
276 views

DX derailleur 1990 maximum teeth?

I'm trying to upgrade my cassette on a (commuter road bike) bike that uses a Shimano rear DX derailleur from ca 1990. What would the maximum tooth count be for this RD? The model says rd-m650 but I'm ...
4
votes
1answer
128 views

XT derailleur 1995 maximum teeth?

I'm trying to upgrade my cassette for lower gearing on a Nishiki Continental. The previous owner put on a (NOS) Shimano XT rear derailleur. I use friction shifters. I looked on the back of the cage ...
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0answers
211 views

Why do SRAM rear derailleur not have a parallel movement

My SRAM rear derailleur (Rival 22 circa 2016) has a non parallel movement. When it is in the lowest gear, the cage and pulley sprockets align with the cassette sprockets, but when it's in the highest ...