All Questions
29
questions
0
votes
1
answer
75
views
Which rear derailleur can I put instead of Shimano Acera
My rear derailleur on Cube Aim Race 29" has broken on the holder. Except for this (and prior to the holder breakage) the derailleur has completely stopped working for some reason. It twists into ...
1
vote
1
answer
93
views
Multiple gears shifted while not pedaling
It happened again, but much worse this time. Someone shifted the front derailleur from 2 to 1 and the rear derailleur from 5 to 9 without pedaling when I was in school. Does this do any significant ...
- 165
2
votes
3
answers
797
views
HELP with derailleur upgrade question
I just bought this Aventon Level ebike https://electricbikereport.com/aventon-level-review/
I was wanting to upgrade the derailleur, but I'm not sure which one to get.
I don't want the entry level/...
- 21
1
vote
1
answer
604
views
9 speed Shimano Deore derailleur compatibility
Will a 9 speed Shimano Deore derailleur be compatible with my 13-32 tooth freewheel?
- 91
0
votes
1
answer
538
views
Can I replace a broken Alivio M410 8speed rear derailleur with Acera T3000 9speed?
Damage to a bike resulted in a broken hanger and a damaged derailleur. I can't get hold of a like-for-like replacement derailleur (Alivio M410). Have seen others state that a 9speed derailleur will ...
- 3
8
votes
1
answer
696
views
Why did Shimano change their rear derailleur design going from a torsion spring to a tension spring inside the parallelogram?
The older Shimano rear derailleurs (pre 7700) use a torsion spring inside the parallelogram. But with the release of the 7700 group they switched to a tension spring which they continued using ever ...
- 733
2
votes
1
answer
1k
views
Will a shimano acera rear derailleur work with a shimano altus cassete?
Got sick of breaking rear axles. Im going to convert to a freehub. Currently i have a shimano acera 9 speed rear derailleur. I found a shimano altus cassete which has a huge 36 tooth sprocket which is ...
0
votes
1
answer
1k
views
What thread does the b-screw on a shimano rd-6400/6401 have?
What thread does the b-screw on a shimano rd-6401 have?
I need to recut the thread but am not entirely sure if it's an M4 fine pitch or something else.
- 733
0
votes
2
answers
239
views
8 speed flat bar set up with Dura Ace RD-7700 or new Claris RD-2400
I'm buying a new drivetrain (cranks, cassette, chain) for my flatbar commuter that was mostly built of parts. I currently have a Dura Ace 7700 short cage derailleur on it, I got it from a friend a ...
- 11
3
votes
2
answers
681
views
Can someone help me identify this old Shimano derailleur?
I want to poke around online a bit and see if I can find anything out about it. It's a long cage, on an old 18 speed Univega MTB. Thanks.
2
votes
1
answer
480
views
Can I change my derailleur without changing my shifter?
I have Shimano V-Brake 8-speed shifters on my bike. These have the brakes and the shifter in one component. I'd like to change my derailleur can I put in a newer 8 speed Shimano derailleur that will ...
- 23
0
votes
1
answer
1k
views
Direct mount vs. hanger derailleur
Currently repairing a bike that I got off the road for free years ago. Around three years ago, a stuck link caused a chain jam while pedaling at high speed, causing the metal around the b-knuckle on ...
3
votes
2
answers
5k
views
Can I use Shimano 105 rear derailleur from 11-speed bike with 10-speed Tiagra shifters?
I have a 10-speed 2013 Specialized Allez Elite with Tiagra componentry (and an 11/28 105 cassette) and would like to install my old Shimano 105 rear derailleur in the back to replace the Tiagra one. ...
- 163
3
votes
3
answers
2k
views
Is my Shimano Deore SLX dérailleur a medium or long cage?
I have a Scott E-Genius 730 Plus and would like to replace the rear dérailleur (the probable cause of difficulties described in my last question). It's a Shimano Deore SLX Dyna-sys unit, it's for a 10-...
- 215
3
votes
2
answers
7k
views
Bottom jockey wheel on rear derailleur keeps skipping chain
Basically the angle between the bottom and top wheels is too great causing the chain to skip to the outside of the bottom wheel under force. If I use the higher adjustment screw on the shimano ...
- 31