13
votes
Accepted
Are brifters meant to spin/slide on impact, by the choice of a low attachment-bolt torque?
I am not privy to the design philosophies of SRAM, Shimano or any manufacturer and as such my answer is based solely on my own experience.
I have crashed on bikes with both Shimano Sora and Dura-Ace ...
- 146
12
votes
Can my belt drive frame be converted to a derailleur setup?
There is no good way. One could imagine ways of contriving a low-end claw-type derailleur on. Don't do that.
Nexus hubs are usually reliable. In some places in the world, there are lot running around ...
- 88.2k
12
votes
Accepted
Why aren't derailleur hangers made into standard shapes?
SRAM introduced the Universal Derailleur Hanger, which is a standard design. I'm not sure how much of a industry-standard it is right now but many bike brands and frame manufacturers have started to ...
- 4,576
11
votes
Accepted
I lost one of the rear rear derailleur hanger screws, what could be the cause, and is it safe to ride before I replace the bolt
Yea, the QR will hold it on tighter then the screws could ever dream of.
If you ever need to remove the wheel though, be extra careful as the one remaining screw has a higher risk of breaking when it ...
- 17.3k
10
votes
Accepted
How to mount a derailleur hanger on this frame?
You have answered your own question, correctly too.
Those generic hangers are exactly what you want. The golden piece held on with the short bolt should slide up the dropout and rest against the ...
- 131k
9
votes
Accepted
Derailleur hanger built-in/cast with frame — options if misaligned?
This looks to be a steel frame which has a steel derailleur hanger. Steel is much more ductile than e.g. aluminum alloys and it can be bent/realigned (reasonably) many times before it cracks.
So don'...
- 14.4k
9
votes
Do 9 speed and 11 speed derailleurs need different hangers?
Hangers are never speed-specific. Most of the time, a frame takes a given hanger and that's the only one, regardless of what derailleur and cassette are used.
The big gap you can't do anything about ...
- 88.2k
9
votes
Can I use a vintage derailleur adapter claw on a modern derailleur
These traditional claw hangers can be purchased new for a few dollars from any good LBS. No need to wreck your vintage derailleur.
Your second photo suggests it is pressed together, not threaded. I ...
- 131k
9
votes
Accepted
Nut dents on stamped dropout
The frame has been cold-deformed because someone's used too much torque to tighten wheel nuts which has squished the metal over time. Either the dropouts are too soft/thin or someone's used an impact ...
- 131k
7
votes
What hanger is compatible with Shimano Claris RD R200?
Derailleur hangers are specific to the frame, not the derailleur. Do you not have a hanger at all or is it just broken? If it's broken, then it's usually not too hard to find a matching aftermarket ...
- 4,177
7
votes
Are brifters meant to spin/slide on impact, by the choice of a low attachment-bolt torque?
Generally you'll find that if you torque them to spec, yes they can still twist readily in a serious impact. I don't know that there's a lot of other evidence in either direction what the intent is ...
- 88.2k
7
votes
Can I use a vintage derailleur adapter claw on a modern derailleur
Can I remove this claw from the old derailleur or is the spring inside
riveted and not threaded?
The spring is not riveted. The pin holding the derailleur to the derailleur hanger is riveted (EDITED: ...
- 24.2k
7
votes
What kind of rear derailleur is compatible with hanger on my bicycle
The derailleur bolt is a standard part. Any derailleur would fit it. However, you need a derailleur that works with the rest of your drivetrain, which is a separate question. You can probably find NOS ...
- 30.4k
7
votes
What kind of rear derailleur is compatible with hanger on my bicycle
As far as I know, almost all derailers are compatible with any hanger. They just screw into the hanger using a standard M10x1 bolt. The issue most people have is with the compatibility of the hanger ...
- 2,079
7
votes
Accepted
Hanger bends from out-of-the saddle efforts?
I agree with you. I can't see any plausible way to apply a significant sideways force to the hanger just from pedalling.
Indeed, you shouldn't get much force in any direction just from your effort. ...
- 62.4k
7
votes
Compatible derailleur/hanger and going 1x
The term "direct mount" has been used to mean a few different things with rear derailleurs, and it can cause confusion.
By Shimano's definition, your frame does not have a direct mount. You ...
- 88.2k
6
votes
OK to ride with a slightly bent mech hanger?
Derailleur hangers are supposed to be, to some degree, a component that bends to save the derailleur. The hanger on one of my bikes seems to get bent at the slightest impact. I'm considering ordering ...
- 75.9k
6
votes
I replaced my rear hub, but I'm not sure about how to attach the derailleur
Compare @mike 's photo with your hanger. Yours does not show a bolt head. Mike's does, and there's a specially-shaped nut on the other side.
This semirounded nut is supposed to slide up the ...
- 131k
6
votes
How can I tighten a loose rear derailleur onto the derailleur hanger?
Most derailleurs are expected to rotate at the derailleur hanger bolt. This is to simplify rear wheel removal and installation as the derailleur can be moved away from the wheel path by hand. The ...
- 14.4k
6
votes
Can my belt drive frame be converted to a derailleur setup?
I've never tried them, but some suppliers such as Wheels offer an emergency hanger which is held in place by the clamping of the quick release. while such a solution may allow you to attach any modern ...
- 773
6
votes
Accepted
Can I put a b-link on a standard mount rear derailleur to fit my direct mount frame?
The 2004 Trek Navigator 200 and 300 features an 8 speed derailleur system drivetrain. The 200 specifically uses Shimano Alivio 8 speed. This derailleur is mounted conventionally with the derailleur ...
- 11.3k
6
votes
Anyone know where I can buy this derailleur hanger?
That's a very common design. Here are some links that appear to be compatible.
https://wheelsmfg.com/derailleur-hangers/1-fastener-derailleur-hangers/derailleur-hanger-25.html
https://...
- 1,895
5
votes
Removing Derailleur Hanger from Devinci Spartan
Welcome back. Sweet ride and I hope to read more about Devinci and their bikes. Leading a sheltered life and really have only heard of the bikes in passing. In the interest of an answer for you, a ...
- 11.3k
5
votes
Accepted
Rear derailleur hitting spokes in 4 largest cogs
Your problem is the thick sheet metal derailleur 'hanger' is in fact badly bent. On cheaper model derailleurs the hanger is built into the derailleur rather than the frame.
Don't ride it in this ...
- 75.9k
5
votes
Accepted
Trying to find Derailleur hanger for a custom road frame
I think it might be Hanger #31 from Wheels Manufacturing:
http://wheelsmfg.com/derailleur-hangers/1-fastener-derailleur-hangers/derailleur-hanger-31.html
It's a little tough to see in your photo, but ...
- 1,895
5
votes
Accepted
How can I tighten a loose rear derailleur onto the derailleur hanger?
After reading Grigory's explanation and other comments (thanks everyone!), I can answer my own question.
SRAM NX Eagle and other SRAM Eagle derailleurs indeed do normally rotate around the derailleur ...
- 746
5
votes
How to fix cross-threaded derailleur hanger?
If its a replaceable hanger, simplest option is replace it.
If not you might be able to repair it with a 10mmx1mm tap. If that does not work, a Helicoil type repair is possible. Its one of those ...
- 53.1k
5
votes
Accepted
Derailleur hanger reverse
The derailleur hanger appears to be installed correctly.
Notice there is a small bolt forward of the axle, that obviously goes in a hole in the dropout and stops the hanger falling off when the ...
- 75.9k
5
votes
I think I have installed my new rear deraileur incorrectly, can anyone give me some advice
From your picture, there are a couple of questions.
Is the B screw in the correct place.
Is the chain the correct length
Please watch this video on installing a deraillieur and 1 minute in, they ...
- 3,349
5
votes
Can someone locate my missing derailleur hanger
Your bike doesn't have a separate hanger. The hanger is integral part of your frame, and is the metal "drop" hanging down below the axle nut.
What has been lost is the bolt and spring ...
- 131k
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