Damn it! Bent derailleur hanger: A Few Questions
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Damn it! Bent derailleur hanger: A Few Questions
Postby LM324 » Fri Feb 22, 2013 10:22 pm
1. I know that the derailleur hanger is bent but how would I know if the derailleur itself got damaged as well?
2. I would really like to ride the bike tomorrow so am thinking of bringing it to the bike shop to get it fixed. Is fixing a bent derailleur hanger a really easy and fast job, like one where I could get it fixed while I wait? How much generally should fixing a bent derailleur hanger cost?
3. I was thinking about buying a Park Tool DAG-2 to fix it myself but then I would have to wait a week for it to be delivered . Anyway are bent derailleur hangers really common? Do you think it is a good idea to buy a derailleur hanger alignment tool to use in the future? For those that have a derailleur hanger alignment tool, do you find that it is something you use regularly or something that just sits there collecting dust?
Thanks for your help,
From a very sad and annoyed cyclist/bike rider.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby Baalzamon » Fri Feb 22, 2013 11:18 pm
Alu or carbon frame, new hanger time
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby il padrone » Fri Feb 22, 2013 11:35 pm
Assuming it is a steel frame with hanger on the drop-out it's a fairly easy fix. If it's not you just need to buy a new replaceable hanger - that's why they are replaceable. I'm guessing it's not replaceable because usually the sort of bend you describe would most likely have just busted the hanger.
1. Get the hanger straightened/replaced first. If the gears still don't shift correctly the derailleur's buggered.
2. You won't be riding it happily tomorrow without a shop straightening job. Should take about 15mins max and <$20. In the good ol' days pre-indexed gears such a problem could just be bent straight with a closed shifting spanner on the hanger - an easy roadside job that I often did for fellow riders who'd stacked their bike. Indexed gears demanded a much more precise chain alignment, the spanner was no longer good enough.
3. I've been cycling for over 35 years and almost always fixing my own bikes. I virtually never use a bike shop for routine servicing. I have a substantial tool kit, but no Park derailleur straightening tool. The 2 or 3 times I have needed to get it straightened I have just taken the bike in to the LBS.
"An unjustified and unethical imposition on a healthy activity."
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby Mulger bill » Fri Feb 22, 2013 11:56 pm
But seeing as you aren't 15kms out the back o' Burke, then go see the LBS.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby LM324 » Sat Feb 23, 2013 12:44 am
The bike is a Aluminium bike with replaceable derailleur and (il padrone) you are right that the hanger should have broken or at least have a huge bend. I could have sworn that there was a bend in the hanger but I went into the garage to look at it again , well, it doesn't look too bent. But there is a definite angle in the jockey wheels causing it to hit into the spokes when in the lower gears. So either the whole hanger has bent so it looks like it is strainght but actually at an angle or the RD is stuffed.
Thanks, I will do this first and hopefully the RD is OKil padrone wrote: 1. Get the hanger straightened/replaced first. If the gears still don't shift correctly the derailleur's buggered.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby LM324 » Sat Feb 23, 2013 12:57 am
anyway I took the hanger off just then and put it on the ground ... the D hanger is definitely bent. Quite a lot actually. Hopefully this means that the RD should be ok and that when I change the hanger everything will be fine.
Generally do bike shops stock the derailleur hangers for the bikes they stock? Will I be able to just walk in and ask to buy a derailleur hanger?
Thanks for the help guys.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby Mulger bill » Sat Feb 23, 2013 6:13 am
If they don't and if they know you well enough they might pull one off a floor unit to get you rolling and order a replacement in for that.
IF they do that, pay cash at the time and a half dozen decent beers next Friday afternoon. One good turn deserves another.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby a » Sat Feb 23, 2013 1:09 pm
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby il padrone » Sat Feb 23, 2013 1:40 pm
I have a replaceable hanger from my MTB that bent on a ride - didn't break. I have straightened it but fitted a new hanger. The old one has been kept as a trail spare for an emergency where I do bust the hanger.
"An unjustified and unethical imposition on a healthy activity."
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby LM324 » Sat Feb 23, 2013 1:44 pm
Biker jk, I have already looked at the site. I have sent them a photo to try identify the derailleur hanger.
I have also called the bike shop and they said they don't have it but can order it in. I've got to call back on Monday though because they said the warehouse is closed on weekends. They said it will be $15 and will be able to be in by probably the end of the week. Which is great. Hopefully the hanger will solve the problem and that there are no issues with the RD.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby LM324 » Sat Feb 23, 2013 1:47 pm
Thanks Il padrone. I'll be buying a couple of spare ones just in case. Considering that I will be going clipless soon if I stack and the hanger gets damaged at least I will be able to change it and not have to wait for it to be ordered in again.il padrone wrote:OP has a replaceable hanger - they are designed to break first before your frame or RD. The hanger alignment tool is pretty pointless for a bike with replaceable hanger. If it's bent and you straighten, it chances are very good it will bust sometime later on a ride just shifting gear.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby trailgumby » Sat Feb 23, 2013 4:35 pm
I carry a spare in my camelbak just in case, as some of the rides I do take me quite a ways from civilisation and walking 10 clicks or more in bike shoes is not something to look forward to. But generally a restrained tweak with a multitool (5mm Allen key, I think, in the derailleur pivot bolt) until the derailleur cage is vertical again will do it.
I've only broken one off doing that, that I think had been bent and straightened quite a bit judging by the extensive fatigue marks where it failed. That was on my "new" ex-demo bike.
Buy a spare, they're handy to have, but I think straightening it will be fine.
I've only once bent a derailleur and that was from a substantial stick, at speed. Believe it or not, I managed to straighten it with the help of a soft-jawed vice and a rubber mallet but that was at home, not on the trail.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby bychosis » Sun Feb 24, 2013 8:16 am
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby warthog1 » Sun Feb 24, 2013 11:15 am
Thanks for that. Very handy.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby a » Sun Feb 24, 2013 11:45 am
1. Apparently even brand new frames and replaceable hangers often need aligning. I know mine did.il padrone wrote:OP has a replaceable hanger - they are designed to break first before your frame or RD. The hanger alignment tool is pretty pointless for a bike with replaceable hanger. If it's bent and you straighten it, chances are very good it will bust sometime later on a ride just shifting gear.
2. I have a replaceable hanger. Have made 4 alignments in its life. Once when brand new. Twice after throwing the bike down the road. The other time because I dunno. But it was a little bent. Must have looked sideways at it. They are soft. Each time the adjustment has been small. Adjustment after stacks about the same as when brand new. All required <very> little force. As I said, my hanger is soft.
Tool $50. 4 hangers ~$200. And experience suggests I'd need the tool after replacement anyway to have schmick shifting.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby LM324 » Sun Feb 24, 2013 7:57 pm
I agree!bychosis wrote:Wouldn't it be nice if there was ONE standard size replacemable derialleur hanger. Or at the least one design per brand. THat way every bike shop could stock any hanger you need.
then it wouldnt be so expensive to get a small piece of metal!
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby warthog1 » Mon Feb 25, 2013 9:59 am
Which tool are you talking about and where to get it?a wrote:Tool. And experience suggests I'd need the tool after replacement anyway to have schmick shifting.
Edit: This one? I'm guessing its not the shimano one$$
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby LM324 » Mon Feb 25, 2013 5:15 pm
Yeah I think a means that one. It's a bit cheaper on pro bike kitwarthog1 wrote:Which tool are you talking about and where to get it?a wrote:Tool. And experience suggests I'd need the tool after replacement anyway to have schmick shifting.
Edit: This one? I'm guessing its not the shimano one$$
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby Jonno » Mon Mar 18, 2013 7:11 pm
So, I'm now trying to source the hanger from a 2011 Focus Mares AX 3.0 - seemingly a difficult task.
I've tracked down a few suppliers online, does anyone have any experience with the following regarding quality?
http://www.derailleurhanger.com/focus.htm" onclick="window.open(this.href);return false;
http://www.schaltauge.com/Focus-Rear-De ... Hanger-017" onclick="window.open(this.href);return false;
http://soshanger.com/epages/box11137.sf ... ries/Focus" onclick="window.open(this.href);return false;
Cheers.
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Re: Damn it! Bent derailleur hanger: A Few Questions
Postby kukamunga » Mon Mar 18, 2013 7:45 pm
Whatever way you do (or don't) choose, the most important thing is to set your inner limit screw so your derailleur does not go within a couple of mm of the spokes - even if this means losing your large cog usability. Even with a mildly bent hanger, a bit of cable tension and limit screw adjustment could see you continue riding without to many probs
An experienced eye can often pick a bent hanger, even just from riding behind someone else. You'll be surprised at just how many bent hangers are out there riding around!!!
Mulger Bill' tip to use a solid, bolt up axle front wheel as an alignment tool is ok as long as the axle is a M10 x 1.0 thread - some axles can be 9mm or 3/8"
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