Unanswered Questions
44 questions with no upvoted or accepted answers
4
votes
0
answers
278
views
Sram AXS derailleur does not shift
Have you encountered a problem where a rear AXS derailleur stops shifting? Any suggestions?
I bought a mint 2023 GX AXS derailleur on Marketplace, it worked for the first short test ride on a road but ...
- 141
3
votes
1
answer
2k
views
What are the axle nut sizes on the brompton?
What are the exact specifications of the nuts used on the various axles of the Brompton bicycle?
Specifically, I have a 2016 M6R black, but I would appreciate it if you listed the specifications for ...
CommunityBot
- 1
2
votes
0
answers
50
views
Something like chainsuck on RD lower pulley after new crankset install?
I just switched out a Shimano M5100 crankset for a SRAM GX Eagle crankset. I am using a KMC X11-EL chain. I cleaned the chain before installing it with the new crankset. My RD is a Shimano SLX 11-...
- 2,090
2
votes
1
answer
243
views
Upgrading Shimano Acera 8 speed Rear Derailleur to 8 speed Shimano XTR derailleur
Looking for some help here. I am upgrading Shimano Acera 8 speed rear derailleur to 8 speed Shimano XTR rear derailleur and it appears that because the old 8 speed XTR derailleur has a clip for the ...
CommunityBot
- 1
2
votes
0
answers
60
views
clicking chain on 3rd gear only
Shimano DI2 11 speed XTR on my gravel bike. The 3rd from smallest gear on the cassette makes a clicking sound. Any other gear its fine. Cassette and chain are fairly new. Have reindexed, checked ...
- 21
2
votes
0
answers
416
views
Using 11-36t 9 speed derailleur with 11-40t 9 speed cassette
So I've got the shimano altus rd-m2000 and it says that it only supports 11-36t. However, I've seen people on forums say that it's possible with this derailleur. Even it I was wondering if with a ...
- 21
2
votes
0
answers
835
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 ...
2
votes
0
answers
95
views
What size rear axle and cones for 1999 Schwinn Cruiser 6?
What size rear axle and cones fit a 1999 Schwinn Cruiser 6 bicycle. I cannot find a part number or identifier, is it the same size as BMX parts?
- 75.8k
2
votes
1
answer
98
views
Old bike: replaced rear axle but the tire goes off the axis when I get on it
I just broke and then replaced my rear axle on an old timey race bike I bought online.
Everything seems to go smoothly when the bike is up on a stand or on at my side, but once I get on it and try to ...
- 47
1
vote
0
answers
28
views
Newbie biking question: Tacx flow smart trainer compatibility with Decathlon Triban RC 100/120
Complete newbie to biking and indoor biking.
I'm looking to buy the Decathlon Triban RC 100 or 120 model. I can't seem to gauge the compatibility with the Tacx flow smart trainer (wheels on).
On the ...
- 11
1
vote
0
answers
49
views
New tire tube and grinding noise?
I punctured my tire tube so i had to remove my back wheel out and replaced the tube, when reassembled, derailleurs started making grinding noises.
I checked where the sound was coming and it was ...
- 5,202
1
vote
0
answers
72
views
Not able to shift from a specific gear
I have a 9-speed rear derailleur and shifting from 1 to 9 isn’t a problem except when it is from 6 to 7, while downshifting has a bit of lag, upshifting takes forever and sometimes it doesn’t even ...
- 165
1
vote
0
answers
38
views
Compatibility Shimano rear derailleur RD-6300
I have this Shimano 600ax. Due to my stupidness I broke the body of the rear derailleur endings its life. There are other rear derailleurs (RD-6300) on ebay for example but these are very expensive ...
- 5,202
1
vote
0
answers
38
views
Chain goes slack in gear 5-10 and very noisey hum
When I’m coasting downhill >35 kph and chain is in gears 5-10 and I hit a bump the chain goes slack, a very loud irritating hum/vibration sound is emitted from the rear wheel until either I pedal ...
- 11
1
vote
0
answers
144
views
Chain creaks under pressure
Just adjusted my back derailleur and now the chain makes a loud creaking noise while under pressure. When on a repair stand the shifting is perfect but while biking it’s horrible and the sound & ...
- 28.4k
1
vote
0
answers
178
views
Can i use claris R2000 rd on 14-34T mega range sprocket?
I have sprocket 14-34T with mega range. I planned to change my old (maybe 1990's) shimano tourney rd to shimano claris R2000 medium cage. Some of my local bike shop said that i can replace with claris ...
- 51
1
vote
0
answers
223
views
Direct mount rear derailleur
I'm upgrading an old MTB for commuting, it had a 5 speed on the back but I'm going to be putting on a new 26" rear wheel with a 7 speed cassette because the freewheel axle wobbles, makes noises ...
- 328
1
vote
0
answers
91
views
Campagnolo rear mech screw type
My limit screws' heads have gone rusty, I want to replace them for looks and to make sure they are easy to adjust on a ride. I would love hex rather than Philips heads!
Does anyone know the type of ...
- 12.9k
1
vote
0
answers
906
views
What is the thread size/measurement of the derailleur barrel adjuster?
The barrel adjuster threads on my commuter bike's RD have been marred when the barrel adjuster got bludgeoned on a side crash and I want to chase the threads before screwing in the replacement barrel ...
- 1,305
1
vote
0
answers
298
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 ...
- 75.8k
1
vote
0
answers
789
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 ...
- 5,698
1
vote
0
answers
48
views
early 1993 Trex 4200 aluminum frame
Im having a problem with my bottom bracket fitting my bearing cups and axle.I have 68mm tapperd thread Suntour XC pro 124mm axle .I tighten up the cups and the axle still has a lot of Play .SO I ...
- 11
1
vote
1
answer
69
views
Compatibility question
I was wondering on a mountain bike what rear derailleurs work if have a 21 speed bike.
Additional information: 7 ring rear cassette and 3 in the front
Will an 8 and 9 speed rear derailleur work or ...
- 13
0
votes
0
answers
5
views
How do you stop the rubber shield from wandering unless you lock it behind the shift outer cap w/ tongue, which introduces a compressible sheath?
I installed the two parts
shift outer cap with long tongue, and
rubber shield
as shown below, but I'm not absolutely sure this is right.
If I put the rubber shield (the one on the right in the ...
- 9,576
0
votes
0
answers
3
views
Is this SRAM X7 bent?
Lower jockey wheel seems to not be in line with upper so wondering if if was in an accident or bent somehow. If so, anything likely needed besides a new derailleur?
0
votes
0
answers
16
views
Shimano Ultegra 9500 set rear mech skips 8th gear
I'm riding a stock Schwinn fastback road bike from around 2004 that came with a Shimano Ultegra 9500 set, with 2x9 speeds. I have never messed with the derailleurs as they've always worked fine. The ...
- 5,202
0
votes
0
answers
63
views
How to replace a band (hub, drum) brake with a freewheel
I am looking to convert my bicycle into a semi-electric bike by adding a freewheel. The 2 freewheels will allow me to use either pedals or an electric motor to move the bike. However, I don't have ...
- 139
0
votes
0
answers
167
views
Replacement pulleys for Shimano Deore XT RD-M739 SGS derailleur (8sp)
Wondering what replacement pulleys I should get for this type of derailleur.
All details of the derailleur can be found here: https://velobase.com/ViewComponent.aspx?ID=4f90a749-6254-4a37-840d-...
- 183
0
votes
0
answers
62
views
My derailleur doesn't go from gear 1 to gear 2 by itself but the rest does
The derailleur doesn't go from gear 1 to gear 2 by itself so I have to manually push it, it works perfectly fine shifting from 2 to 7 but when I try to change the gear to 8, it stays on 7
0
votes
0
answers
70
views
My bike won’t change out of first gear
NoI’ve tried changing the looseness of the H and L screws but my great problem remains the same. It won’t change out of first gear even when I manually put it into another gear. The back derailer is ...
- 5,202
0
votes
0
answers
315
views
Which currently available rear derailleur would work as a replacement for a Schwinn Boundary 29 Pro Shift?
I would like to change my rear derailleur. I have a Schwinn Boundary 29 inch, Pro Shift. I am not sure what year. Which currently available derailleur would mount up to the frame and operate correctly ...
- 128k
0
votes
0
answers
16
views
Claude butler urban rear derailer upgrade
Hi looking to upgrade rear derailer. Currently has shimano tourney tx30 with 3 x 7 set. Can I fit a deore instead?
- 1
0
votes
0
answers
49
views
Chain slipping at specific chainring angle
1x11 road bike suddenly starts “slipping” gears without fully jumping gears. I noticed that, only when pedaling backwards in the bike stand, it happened in 180 degree intervals at a specific part of ...
- 1
0
votes
0
answers
321
views
Rear wheel not centered
So i just noticed that my rear wheel is not centered. I think it has been like that since i sent my bike for a service 6 months ago. The wheel is brand new
I also noticed a thing which looks like a ...
0
votes
0
answers
82
views
Fixing up a rusty old Rallye mountain bike
I bought a Rallye mountain bike from Facebook Marketplace last year and did most of the major overhauling then as well. It was covered in mud, gunk, rust, had broken pedals, etc. So I had replaced the ...
- 21
0
votes
0
answers
80
views
Bracket axle for Shimano RD-2300 rear derailleur
Where can I find a bracket axle for Shimano RD-2300 rear derailleur? I searched everywhere and I didn't find one. I need to mention that the frame type is Speed Fitness Alloy and bike is a Focus ...
- 75.8k
0
votes
0
answers
51
views
What might be causing the faulty shifting on my bike?
I bought a used bike that has 8 speed cogs and 3 speed chainrings. The front shifts great but the back regularly fails on the 6th and 5th speeds. I know a bit about adjusting the shifters so I can say ...
0
votes
0
answers
37
views
Rear derailleur not shifting first time from lowest gear
I am installing new cables and trying to reconnect the rear derailleur. I can the gears indexed perfectly on the way up but when I try to shift down from the lowest gear (biggest cog) it doesn’t move ...
0
votes
0
answers
96
views
What rear axle do I need?
I had the chance to buy myself a bargain the other week. It was a Muddy Fox Courier Comp mountain bike – I had one when they first came out. The thing is I need to get a rear axle long ...
- 12.9k
0
votes
0
answers
452
views
What are my options - TA to QR conversion
I’ve just bought these wheels on gumtree and didn’t realise they were thru axle as I require quick release for my cx bike (BH RX team cross 2014 https://issuu.com/bhbikesusa/docs/bh_bikes_2014-...
-1
votes
1
answer
1k
views
Apparently too much rear derailleur cable pull
I have a Deore XT RD-M761 GS medium cage derailleur on my touring bike that
seems to move too much per shift. It shifts the chain on a 11-30 8-speed
cassette with chainrings being 36/48 and the ...
- 20.1k
-1
votes
1
answer
512
views
Rear derailleur is not working correctly
Having problems with the derailleur in an old Panasonic 10 speed.
When I shift the bike all the way up to 5th gear ( smallest in the back) the spring on the hanger of the derailleur has no tension at ...
CommunityBot
- 1
-1
votes
1
answer
203
views
Why doesn't the cassette rotate when I backpedal?
I have an old bicycle where backpedaling causes the cassette to not rotate. Instead, the cassette stays still and the rear derailleur bends, providing new chain to go around the backpedaled chainring. ...
- 20.1k
-3
votes
1
answer
254
views
How to adjust rear derailleur indexing in a mix-and-match drivetrain in the easiest manner?
I have a touring bike where the drivetrain has been built not according to Shimano's instructions. For example, the shift lever is SL-BS64-8 Ultegra 8-speed bar end shifter that according to Shimano's ...
- 20.1k