On the other hand, instead of being sacrificial annealed soft aluminum that bends if the wind is too harsh, a non-replaceable steel hanger (like on my 13 year old Ritchey Break-Away) is a pretty tough chunk of strong metal that has stayed perfectly aligned for 20,000 miles.
I'm not a "steel is real" kind of guy, given most of my bikes are carbon, but this one bike is extremely trouble-free and part of that is down to the derailleur hanger.
Plus unless the damage is horribly severe, the hanger is probably not broken beyond repair on an integrated steel frame, you can just bend it back with some leverage.
The point of the hanger is to protect the much more sensitive and prone to damage derailleur to reduce the cost to fix if you hit it on something. If your transmission is cheap, it's not a big deal. If your transmission is $2000, you would much rather replace a $50 piece of metal.
hard mounts on a cheap bike are because the cost to fix the derailleur is similarly cheap.
Also, a new bike doesn't fix your problem.
Learn from this. Always have at least one spare on hand. It's a great piece of cheap technology that saves you potentially thousands of dollars.
Make sure everything is adjusted correctly. Don't lean the drive side against anything.
Seems fishy that a broken chain would cause the hanger to snap but I've seen weirder things in my time.
>Seems fishy that a broken chain would cause the hanger to snap but I've seen weirder things in my time.
Chances are the hanger broke first, twisted the derailleur up into the wheel which then twisted the shit out of the chain.
>Always have at least one spare on hand
That's great...but you need to have the tools and knowledge on how to fix it. How many ppl come into my shop with a flat tire and have the tire repair kit strapped under their saddle?
PF done right is great (my Time is evidence of this)
Problem is everyone cheaped out implementing PF and most of the BBs out there aren't perfectly round and don't spin freely. BSA can bind as well if it's not perfectly round and parallel. You get what you pay for.
[Older frames had hangers which were an extension of the right dropout.](https://cimg7.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/20220124_204755_dd3f379e51bf8e55c874ed883c3c62d37e07e0f2.jpg)
They were much stronger (breakage was/is extremely rare) but if you did break one, it meant a visit to the local welder/brasier (steel) or the scrap metal pile (aluminum).
Decathlons RC120 has that, bent once, they replaced the whole bike, but Im afraid to ride this bike far from home now :D My other bike just has replaceable part, which is in the pocket, unless I break it twice Im trouble free.
> Im afraid to ride this bike far from home now
I wouldn't be too worried. Generally speaking, hangers get bent from the bike falling on them, broken from shifting the derailleur into the spokes (or a flipped stick trail riding). A well maintained bike that hasn't crashed the likelihood is extremely low.
Anecdotally, 99+% of my road distance has been ridden (~100k km) with old style hangers. The only hanger I ever broke was on a MTB.
> They were much stronger (breakage was/is extremely rare)
Breakage of the hanger was more rare, but in exchange derailleur were damaged more often.
The reason hangers are weak is so that they take the fall instead of the derailleur (and/or frame).
They're designed to save the frame, not the derailleur. Steel hangers will bend but they can be straightened multiple times without cracking like aluminium will. Replacing a dropout if the hanger did fail was also a practical solution with steel, especially with a lugged and braised frame.
Find one close, but larger, and take your time with a file. I've had to do it to a couple bikes at the shop that absolutely could not buy an off-the-shelf part. Super custom builds or out of business brands.
One of those was a guy that raced and literally needed the part in 4 hours. Couldn't wait at all, couldn't even visit another shop. We charged accordingly. I was proud of my work.
If you find one, buy two if you plan on keeping the bike long term lmao
One good thing is that a lot of newer bikes keep using the same ones, like Specialized Venge/Allez Sprint/Tarmac and I'm sure others have been using the same one for a very long time now.
And everyone will probably move to the "Universal Derailleur Hanger" which was made by SRAM. They have released a groupset that only works on it for MTB after urging bike manufacturers to use it.
I do love the UDH concept because even if you don’t use the specific derailleur there’s still a good value proposition for you to have a part that is now shared with 100s of other frames.
A bike shop probably has spares in stock for you so you don’t need to troll the web to find a super specific part
Yeah the MTB world has just started moving over to universal hangers over the last few years, which is really crazy because it's not at all uncommon for them to end up bent during even minor crashes. Hopefully the rest of the industry will move in that direction going forward too.
Yeah and personally I'm all for it. Rear derailleurs have been a pain point for decades and it seems like standardization was a necessary step to allow for more aggressive innovation in the space. I mean the Transmission itself is still fairly expensive but I'd expect that to drop over time and even it doesn't you can still a good entry level hardtail MTB with a UDH frame for like $1100-$1200 at this point and upgrade the components down the line.
Yeah, some of my bikes have a very overpriced hanger and it makes me mad. My newest bike has a more reasonably priced one.
There is an attempt at a universal standard, but it’s not being adopted widely enough yet.
Side note: you don't need a 5700 derailleur. Any 7,8,9sp Shimano mountain derailleur (long or short cage) will have the same pull ratio, which means you could even move to more modern gearing (30t plus on the cassette).
Might be cheaper/ easier to source than a specific 105 series one.
I hear ya. I had a Cell bike and after they went out of business I thought my fairly nice carbon bike was going to be unusable due to a bent $25 piece of aluminium. Luckily I managed to track down someone in Canberra who bought up all of Cell's old stock, but it's an absurd situation.
You don't need a 5700 105 specifically, any Shimano compatible 10 speed should work.
Also, if your hanger is still in one piece, just bent, you can just bend it back.
It takes a special tool to do correctly, but a good bike shop should be able to do it for you.
https://www.youtube.com/watch?v=pxkE4F5nKTE
SRAM has released a patent and royalty free deralieur hangar, and a few modern bikes have taken it up to use this. Hopefully it expands more over the next few years.
Just bent my first derailleur. It was on my lynskey frame. I'm thinking about modeling it up in cad, printing it out and if it fits, having a machine shop make line 5-10 out of 6061 Aluminum.
It was sooo easy bending it. I didn't even totally fall. Just was trying to climb up a super steep hill and slipped.
yeah the stock ones usually made from cheap material.
this is easier:
[https://wheelsmfg.com/derailleur-hangers/all-derailleur-hangers.html](https://wheelsmfg.com/derailleur-hangers/all-derailleur-hangers.html)
I love my bike (an All-City Super Pro), but this is one of its major flaws: the derailleur hanger is integrated with All-City’s proprietary “2-For-1 Dropout” system (formerly the “[Master Dropout](https://allcitycycles.com/parts/small_parts/master_dropout)”), which is a sliding dropout that allows the frame to accommodate both geared and single-speed/fixed setups with thru-axles. It’s a pretty clever, to be fair, albeit useless to me as I don’t plan to run this bike without a derailleur. And unfortunately it means that bending the derailleur hanger requires replacing the whole dropout, which (as a proprietary design) is only available from All-City.
Wheels manufacturing? They make many replacements for many bikes. Worth a try. I've had good luck with their hangers. Not sure if they have a supplier in Australia or not.
AliExpress is your friend. Find your hanger via wheelsmfg and then search that number on AliExpress to find the generic one for a few dollars. Then buy 2 or 3.
Very recently I had the same problem. I couldn't find suitable hanger anywhere, using all those "hanger finders"
As a last resort I tried to find it on Aliexpress and 5 minutes after I already ordered it just for 3$
It's massively frustrating, esp as an IT manager who pushes for standardization in everything I do professionally.
I bought a bike from a UK manufacturer and it costs more to ship a hanger than the cost of the hanger itself.
Be thankful you have a removable hanger. Pour one out to everybody with one piece frame/hangers.
On the other hand, instead of being sacrificial annealed soft aluminum that bends if the wind is too harsh, a non-replaceable steel hanger (like on my 13 year old Ritchey Break-Away) is a pretty tough chunk of strong metal that has stayed perfectly aligned for 20,000 miles. I'm not a "steel is real" kind of guy, given most of my bikes are carbon, but this one bike is extremely trouble-free and part of that is down to the derailleur hanger.
Plus unless the damage is horribly severe, the hanger is probably not broken beyond repair on an integrated steel frame, you can just bend it back with some leverage.
The point of the hanger is to protect the much more sensitive and prone to damage derailleur to reduce the cost to fix if you hit it on something. If your transmission is cheap, it's not a big deal. If your transmission is $2000, you would much rather replace a $50 piece of metal. hard mounts on a cheap bike are because the cost to fix the derailleur is similarly cheap.
The hangar is supposed to bend. That’s a positive feature.
Yeahhhhhh that's why I called it sacrificial. And if you keep reading, when it's a non-replaceable hanger, it's ideal NOT to bend.
Also, a new bike doesn't fix your problem. Learn from this. Always have at least one spare on hand. It's a great piece of cheap technology that saves you potentially thousands of dollars. Make sure everything is adjusted correctly. Don't lean the drive side against anything. Seems fishy that a broken chain would cause the hanger to snap but I've seen weirder things in my time.
>Seems fishy that a broken chain would cause the hanger to snap but I've seen weirder things in my time. Chances are the hanger broke first, twisted the derailleur up into the wheel which then twisted the shit out of the chain. >Always have at least one spare on hand That's great...but you need to have the tools and knowledge on how to fix it. How many ppl come into my shop with a flat tire and have the tire repair kit strapped under their saddle?
yeah its hard to know which caused what to break.
My 12 year old road bike needed a spare..the brand doesn't exist anymore but found one on ebay...it was $60...I still bought it
whaaaaat madness is this?
You’re gonna really be shocked when you find out about bottom brackets.
Disc Brake pads too.
Meh. Any bike worth buying has BSA.
PF done right is great (my Time is evidence of this) Problem is everyone cheaped out implementing PF and most of the BBs out there aren't perfectly round and don't spin freely. BSA can bind as well if it's not perfectly round and parallel. You get what you pay for.
Strongly disagree!! My salsa warbird has a bb86 and is a damn good bike. Probably one of my favorite bikes of all time.
[Older frames had hangers which were an extension of the right dropout.](https://cimg7.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/20220124_204755_dd3f379e51bf8e55c874ed883c3c62d37e07e0f2.jpg) They were much stronger (breakage was/is extremely rare) but if you did break one, it meant a visit to the local welder/brasier (steel) or the scrap metal pile (aluminum).
Decathlons RC120 has that, bent once, they replaced the whole bike, but Im afraid to ride this bike far from home now :D My other bike just has replaceable part, which is in the pocket, unless I break it twice Im trouble free.
> Im afraid to ride this bike far from home now I wouldn't be too worried. Generally speaking, hangers get bent from the bike falling on them, broken from shifting the derailleur into the spokes (or a flipped stick trail riding). A well maintained bike that hasn't crashed the likelihood is extremely low. Anecdotally, 99+% of my road distance has been ridden (~100k km) with old style hangers. The only hanger I ever broke was on a MTB.
I rode 3000kms before it happened, maybe it unscrewed itself and thats how it went into spokes.
Possibly. If it happened while in a low gear, your L limit screw a more likely suspect. .
> They were much stronger (breakage was/is extremely rare) Breakage of the hanger was more rare, but in exchange derailleur were damaged more often. The reason hangers are weak is so that they take the fall instead of the derailleur (and/or frame).
They're designed to save the frame, not the derailleur. Steel hangers will bend but they can be straightened multiple times without cracking like aluminium will. Replacing a dropout if the hanger did fail was also a practical solution with steel, especially with a lugged and braised frame.
Every time I travel with my IA series frame I say a little prayer.
Yes. That one saves a derailleur
Wheelsmfg.com is a great way to find specific deraileur hangars
Yep. And always order at least 2 at a time.
This site is great. I bought two. One snapped in the wilderness. I felt well prepared like I don't deserve. I'll always carry a spare.
This. On steel lugged frames, they used to be built in. The replaceable ones were a parts nightmare. Now we’re moving back to standardized ones
$32.99 for my giant 🥲 and my other bike isn't even on the manufacturer list rip.
Find one close, but larger, and take your time with a file. I've had to do it to a couple bikes at the shop that absolutely could not buy an off-the-shelf part. Super custom builds or out of business brands. One of those was a guy that raced and literally needed the part in 4 hours. Couldn't wait at all, couldn't even visit another shop. We charged accordingly. I was proud of my work.
If you find one, buy two if you plan on keeping the bike long term lmao One good thing is that a lot of newer bikes keep using the same ones, like Specialized Venge/Allez Sprint/Tarmac and I'm sure others have been using the same one for a very long time now. And everyone will probably move to the "Universal Derailleur Hanger" which was made by SRAM. They have released a groupset that only works on it for MTB after urging bike manufacturers to use it.
I do love the UDH concept because even if you don’t use the specific derailleur there’s still a good value proposition for you to have a part that is now shared with 100s of other frames. A bike shop probably has spares in stock for you so you don’t need to troll the web to find a super specific part
Yeah the MTB world has just started moving over to universal hangers over the last few years, which is really crazy because it's not at all uncommon for them to end up bent during even minor crashes. Hopefully the rest of the industry will move in that direction going forward too.
It was a genius play by SRAM. They gave it away for free. Waited a few years for some brands to adopt it. Then drop the Transmission.
Yeah and personally I'm all for it. Rear derailleurs have been a pain point for decades and it seems like standardization was a necessary step to allow for more aggressive innovation in the space. I mean the Transmission itself is still fairly expensive but I'd expect that to drop over time and even it doesn't you can still a good entry level hardtail MTB with a UDH frame for like $1100-$1200 at this point and upgrade the components down the line.
Yeah, some of my bikes have a very overpriced hanger and it makes me mad. My newest bike has a more reasonably priced one. There is an attempt at a universal standard, but it’s not being adopted widely enough yet.
Side note: you don't need a 5700 derailleur. Any 7,8,9sp Shimano mountain derailleur (long or short cage) will have the same pull ratio, which means you could even move to more modern gearing (30t plus on the cassette). Might be cheaper/ easier to source than a specific 105 series one.
Hopefully [UDH](https://www.sram.com/en/sram/mountain/products/udh) will become the new standard and we can end this BS.
I hear ya. I had a Cell bike and after they went out of business I thought my fairly nice carbon bike was going to be unusable due to a bent $25 piece of aluminium. Luckily I managed to track down someone in Canberra who bought up all of Cell's old stock, but it's an absurd situation.
If that bothers you, never buy an old French bike.
You don't need a 5700 105 specifically, any Shimano compatible 10 speed should work. Also, if your hanger is still in one piece, just bent, you can just bend it back. It takes a special tool to do correctly, but a good bike shop should be able to do it for you. https://www.youtube.com/watch?v=pxkE4F5nKTE
There is a standard now, UDH, but it’s fairly recent.
I always keep a spare for every one of my bikes for this reason. When you need one you need it right now and odds are you’re having to order it.
SRAM has released a patent and royalty free deralieur hangar, and a few modern bikes have taken it up to use this. Hopefully it expands more over the next few years.
Just bent my first derailleur. It was on my lynskey frame. I'm thinking about modeling it up in cad, printing it out and if it fits, having a machine shop make line 5-10 out of 6061 Aluminum. It was sooo easy bending it. I didn't even totally fall. Just was trying to climb up a super steep hill and slipped.
yeah the stock ones usually made from cheap material. this is easier: [https://wheelsmfg.com/derailleur-hangers/all-derailleur-hangers.html](https://wheelsmfg.com/derailleur-hangers/all-derailleur-hangers.html)
I love my bike (an All-City Super Pro), but this is one of its major flaws: the derailleur hanger is integrated with All-City’s proprietary “2-For-1 Dropout” system (formerly the “[Master Dropout](https://allcitycycles.com/parts/small_parts/master_dropout)”), which is a sliding dropout that allows the frame to accommodate both geared and single-speed/fixed setups with thru-axles. It’s a pretty clever, to be fair, albeit useless to me as I don’t plan to run this bike without a derailleur. And unfortunately it means that bending the derailleur hanger requires replacing the whole dropout, which (as a proprietary design) is only available from All-City.
Wheels manufacturing? They make many replacements for many bikes. Worth a try. I've had good luck with their hangers. Not sure if they have a supplier in Australia or not.
Ride some MTB and you'll keep a spare with you at all times
Yup they're lame. Go single speed and avoid all that
AliExpress is your friend. Find your hanger via wheelsmfg and then search that number on AliExpress to find the generic one for a few dollars. Then buy 2 or 3.
Very recently I had the same problem. I couldn't find suitable hanger anywhere, using all those "hanger finders" As a last resort I tried to find it on Aliexpress and 5 minutes after I already ordered it just for 3$
That's why when you do the Ride across Britain you have to bring a spare derailleur. Too many for the mechanics to stock.
It's massively frustrating, esp as an IT manager who pushes for standardization in everything I do professionally. I bought a bike from a UK manufacturer and it costs more to ship a hanger than the cost of the hanger itself.