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Broken Deraileur hanger - glueing it back together!

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Broken Deraileur hanger - glueing it back together!

Old 05-27-20, 08:01 PM
  #51  
rollagain
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Originally Posted by Toadmeister View Post
I could definitely model it in CAD. Printing in a tough material would be the next challenge

snip
If you can model it in CAD, you could just send the file to somebody with a CNC mill and have them crank you out a couple, couldn't you?
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Old 05-27-20, 08:39 PM
  #52  
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Originally Posted by rollagain View Post
If you can model it in CAD, you could just send the file to somebody with a CNC mill and have them crank you out a couple, couldn't you?
I've never costed it but I'd figure it would be too cost prohibitive for a couple parts. And the time modeling it in CAD is $ too. That said, I'd consider it if this ever came up again.
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Old 05-28-20, 06:30 AM
  #53  
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Originally Posted by blakcloud View Post
I love your enthusiasm! Weld it yourself. Check out this introductory video video on welding aluminum. You can pick up the supplies from Home Depot
That alumaweld crap is nothing more than solder. I don't know if it would be strong enough to hold a derailleur.
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Old 05-28-20, 06:35 AM
  #54  
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Originally Posted by BlazingPedals View Post
That alumaweld crap is nothing more than solder. I don't know if it would be strong enough to hold a derailleur.
My Machinist friend who helped me has also done that soldering before. His opinion is it probably wouldn't have worked well on this part, I can't disagree.

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Old 05-28-20, 06:37 AM
  #55  
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I'm now convinced I should order a spare.
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Old 05-28-20, 07:12 AM
  #56  
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Originally Posted by rollagain View Post
But it IS the manufacturer's fault that you can't get a replacement of a part that's designed to be sacrificed to save your derailleur (and maybe your wheel). They should be better about keeping a stock of those.
Sadly, in the modern economy, the manufacturer is not the branding company. You could blame Jamis, but they did not manufacture anything on that bike. The manufacturer fulfills orders. To spec. They deliver what was contracted. Nothing more, nothing less.

To the OP, it is wise to order two of these hangars, once you identify the source. I have a spare for my Chinese carbon wonder bike. I carry my spare for my mountain bike, because...crashes. PG
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Old 05-28-20, 07:50 AM
  #57  
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Neat that its back to working. I only have 1 bike with a replacable hanger and its my MTB...which i use a handful of times a year. It shipped with a bent hanger and after eyeing it straight, I still havent actually bought a replacement. Looks like thats on my list of things to do today.

So the most important thing is- whats the big gravel ride?...big miles?...big climb?...new area?
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Old 05-28-20, 07:59 AM
  #58  
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Originally Posted by mstateglfr View Post
Neat that its back to working. I only have 1 bike with a replacable hanger and its my MTB...which i use a handful of times a year. It shipped with a bent hanger and after eyeing it straight, I still havent actually bought a replacement. Looks like thats on my list of things to do today.

So the most important thing is- whats the big gravel ride?...big miles?...big climb?...new area?
Gravel ride is: Sterile Iowan- Still on like Donkey Kong

https://sterileiowan.weebly.com/

I'm a slow riding Clydesdale, so I am just doing the 50 (Taste of Sterile).

The ride organizer (Dictator) is a hoot and keeps things fun and weird, which attracted me to this ride. It's his alternative to Dirty Kanza and he bills it as the second best Gravel ride on the DK date (original before it was cancelled).
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Old 05-28-20, 08:11 AM
  #59  
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Originally Posted by Toadmeister View Post
Gravel ride is: Sterile Iowan- Still on like Donkey Kong

https://sterileiowan.weebly.com/

I'm a slow riding Clydesdale, so I am just doing the 50 (Taste of Sterile).

The ride organizer (Dictator) is a hoot and keeps things fun and weird, which attracted me to this ride. It's his alternative to Dirty Kanza and he bills it as the second best Gravel ride on the DK date (original before it was cancelled).
Very cool- didn't realize that ride was still on. Ive read about it since its on DK weekend.

Hope the weather works out!
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Old 05-28-20, 08:12 AM
  #60  
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JB Weld is pretty strong stuff in my experience. I too am rooting for you.
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Old 05-28-20, 08:54 AM
  #61  
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Originally Posted by MattTheHat View Post
JB Weld is pretty strong stuff in my experience. I too am rooting for you.
I wouldn't mind trying again sometime with JB Weld as I think I know what I did wrong. I de-greased and used rubbing alcohol on the aluminum surfaces prior to applying the JB Weld and used good clamping. What I forgot is to etch/sand/wire brush the mating surfaces. This is important to remove the thin layer of Aluminum Oxide which will result in de-bonding.

Again, I'm an fool who needs to make mistakes and learn the hard way! I should have known better also as I have a background in polymers, bonding and some experience doing bonding but that was many years ago and the brain gets foggy....

Ah well, it seems to all be working out with the machining, threaded tapping and fasteners. This is probably the better solution until I get a replacement part.
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Old 05-28-20, 08:00 PM
  #62  
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Riding in the woods on the east coast I carry a spare. Iíve broken two in the last 3
months. Then I have two extras in the tool box.

JB Weld is good stuff. Thought the longer curing stuff is stronger. Anyway it should hold up unless it takes another hit.
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Old 05-29-20, 07:27 AM
  #63  
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Originally Posted by biker128pedal View Post
Riding in the woods on the east coast I carry a spare. Iíve broken two in the last 3
months. Then I have two extras in the tool box.

JB Weld is good stuff. Thought the longer curing stuff is stronger. Anyway it should hold up unless it takes another hit.

Ironically, my other bike I do have a spare for, LOL. Why couldn't have that one broke? Murphy's Law is absolute.

Yeah, I need multiple spares.
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Old 05-29-20, 06:55 PM
  #64  
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If you have a strong clamp just use that. It only needs to support a few pounds and if it fails off you can reapply in no time.
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Old 05-30-20, 09:42 PM
  #65  
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UPDATE! Completed a 58 mile gravel ride today, no problemS!

except the nail in the rear tire, but that was quickly remedied. Tubeless and sealant did it’s job!

Last edited by Toadmeister; 05-31-20 at 07:18 AM.
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Old 05-31-20, 06:04 AM
  #66  
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Originally Posted by Toadmeister View Post
UPDATE! Completed a 58 mile gravel ride today, no problemS!
I suspected a quality mechanical repair wouldn't be an issue.
If and when you get a replacement, it seems the repaired one can become a spare. Or... it just might last the life of the bike.
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Old 05-31-20, 06:53 AM
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I enjoyed reading this thread and the positive outcome of your efforts....
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Old 05-31-20, 07:19 AM
  #68  
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Originally Posted by Oneder View Post
If you have a strong clamp just use that. It only needs to support a few pounds and if it fails off you can reapply in no time.
meh.....however in a pinch/on the road with no other options I could see trying this.
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Old 05-31-20, 07:20 AM
  #69  
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Originally Posted by Speedway2 View Post
I enjoyed reading this thread and the positive outcome of your efforts....
in a world of turmoil, gotta appreciate life’s little victories
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Old 06-01-20, 12:10 PM
  #70  
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Interesting thread. I was rooting for your first fix although it seemed like it wouldn't work.

Mostly I'm chiming in to say that I had a Wow moment when I saw the Macross Veritech plane in your first set of pics! I hadn't seen those in years!
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Old 06-01-20, 12:15 PM
  #71  
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Originally Posted by highrpm View Post
Interesting thread. I was rooting for your first fix although it seemed like it wouldn't work.

Mostly I'm chiming in to say that I had a Wow moment when I saw the Macross Veritech plane in your first set of pics! I hadn't seen those in years!
​​​​​​LOL. Yes model building is my indoor hobby! Won't get worked on again till a rainy day.
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Old 06-01-20, 05:26 PM
  #72  
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Hope this helps...

Goops and glues will have their day, but nuts and bolts are here to stay

Last edited by 40degreerake; 06-01-20 at 05:33 PM.
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Old 06-02-20, 05:20 PM
  #73  
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Originally Posted by dedhed View Post
I personally would have drilled & tapped it as well as glue. Or minimum wrapped it in wire embedded in glue on the outside as well. I suspect you won't be going far.
I thought of that as well, however the holes for screws or rivets would be sources for fatigue cracks.

There is decent area there on the fracture line, and unusually the fracture plane is parallel to the hanger, not perpendicular. An adhesive bond may work. So would a weld if the material is rated for weldability, such as 6061.

This is the point where a homegrown 3D printer would be awesome, the manufacturer emails you a file and you print it out. A high strength plastic such as delrin might work. However elastic stiffness ("Young's mudulus") is an issue, not just strength, for shift precision.
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Old 06-16-20, 06:05 PM
  #74  
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Update!

Deraileur showed up today, installed just fine and will test ride tonight!

Actually showed up at LBS (80 miles away) Thursday last week and they mailed to me arrived today.
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