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Derailleur hanger bending under normal use. Are Wheels Manufacturing hangers stiffer?

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Derailleur hanger bending under normal use. Are Wheels Manufacturing hangers stiffer?

Old 05-05-16, 06:03 AM
  #26  
JonathanGennick 
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Originally Posted by lineinthewater View Post
Hi. I was originally thinking I would swap them out for hangers that met spec, ...
Are you sure your hangers are out of spec, or could your frame be misaligned somewhat? Frames are never perfect, and I've had to sometimes align brand new hangers.
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Old 05-05-16, 06:10 AM
  #27  
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Originally Posted by JonathanGennick View Post
Are you sure your hangers are out of spec, or could your frame be misaligned somewhat? Frames are never perfect, and I've had to sometimes align brand new hangers.
I'm 99% sure. I was thinking the same as you when I first measured them - how can three brand new hangers be out of spec? How improbable is that? So, I tested all three on another identical CAAD10 frame, with the same wheel. The results were identical, same max tool rim deflection, and the orientation of the deflection. My DAG is brand new. But, to eliminate myself and the tool as possible sources of error, I even brought it by the LBS and had them measure with their tool. They came to the same conclusion.

I know some think I'm splitting hairs, but if Park says 4mm (at the rim) is enough to affect shifting (and this no doubt is more important on 10spd+ systems), and the hangers arrive 5-6mm off (at the rim), and Cannondale says DO NOT align their hangers, what do you do?

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Old 05-05-16, 06:28 AM
  #28  
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In my experience, if limits and cable tension are properly adjusted, it matters little if the hanger is moderately bent.
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Old 05-05-16, 06:45 AM
  #29  
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Originally Posted by lineinthewater View Post
I know some think I'm splitting hairs, but if Park says 4mm (at the rim) is enough to affect shifting (and this no doubt is more important on 10spd+ systems), and the hangers arrive 5-6mm off (at the rim), and Cannondale says DO NOT align their hangers, what do you do?
I'd align one anyway. That's just how I roll.

FWIW, I agree w/Park. You might get away w/4mm at the rim, or you might not. I've had plenty of cases where 4mm is enough to affect shifting. Probably it depends upon the specific mix of parts that are involved. And even Park's tool is kind of sloppy and has some wobble to it. And the newer 11-speed systems that are hitting the mountain bike world surely require a closer degree of alignment than do the older 8- and 9-speed systems.

It's up to you and the amount of risk you want to take, but I wouldn't think twice about straightening a brand new hanger. OTOH, I can understand your reluctance if you have a carbon frame road bike that could be damaged. I take maintenance risks on my own bikes, but everyone has to decide that for themselves.

Also check out derailleurhanger.com. Good source for hangers. They always have stock. They ship fast. They are my go-to source.
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Old 05-05-16, 06:56 AM
  #30  
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Originally Posted by JonathanGennick View Post
I'd align one anyway. That's just how I roll.

FWIW, I agree w/Park. You might get away w/4mm at the rim, or you might not. I've had plenty of cases where 4mm is enough to affect shifting. Probably it depends upon the specific mix of parts that are involved. And even Park's tool is kind of sloppy and has some wobble to it. And the newer 11-speed systems that are hitting the mountain bike world surely require a closer degree of alignment than do the older 8- and 9-speed systems.

It's up to you and the amount of risk you want to take, but I wouldn't think twice about straightening a brand new hanger. OTOH, I can understand your reluctance if you have a carbon frame road bike that could be damaged. I take maintenance risks on my own bikes, but everyone has to decide that for themselves.

Also check out derailleurhanger.com. Good source for hangers. They always have stock. They ship fast. They are my go-to source.
Thanks for your thoughts. I might align one, and consider it the cost of learning. The others will probably be swapped out, or I'll go with Wheels for comparison. But, again, if Cannondale says don't bend our hangers, then they should arrive straight.

The CAAD10 is an aluminum frame. My primary concern is weakening a hanger, and having it break while riding. My secondary concern is just the aggravation and cost of having to fix a recurring problem, and trying to dial in a drive train starting with a less-than-ideal foundation.

I think my best next step is to stop by the local Cannondale dealer, from who I purchased this frame, and ask about their experience with this specific hanger. Maybe they are frequently aligning new CAAD10 hangers as standard procedure. Or, maybe they recommend Wheels. Who knows.

Thanks for the website reference. I'll check it out.
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