[RBW] Re: derailleur hanger

[Lungimsam]

Wiggle it like Wiegle... Bend it like Bilenky...Nudge it like 
Nobilette...Persuade it like Petersen...Wrench it like Waterford...Tweak it 
like Toyo...

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[RBW] Re: derailleur hanger

[jeffrey kane]

Yep, everyone is right about just trying it, either yourself or at a shop 
... but aren't you in Bklyn? If so, give Johnny Coast a call. He can bend 
it or replace it for you and he does make some awfully nice bikes right 
here in the big apple.

On Wednesday, March 2, 2016 at 5:13:53 AM UTC-5, ascpgh wrote:
>
> Done with the right tool, the rear wheel mounted, a steel frame derailleur 
> hanger can usually take the adjustment. Yours seems to be on the low end of 
> the bent scale. Knackered ones are bent so much as to violate the integrity 
> of the threaded hole or show the surface fractures of having bent too far. 
>
> The tool, threaded into the derailleur mounting hole, protects its 
> integrity and the mounted rear wheel stabilizes the dropouts' spacing, 
> prevents twisting of the drive side dropout's opening while the rim 
> provides a comparative indexing surface at points around the projected 
> radius of the derailleur hanger mount. 
>
> I scan the various sources for those tools often, I've used them in the 
> shop and have a growing want for one myself now that shops are more 
> interested in selling a new hanger tab as the only fix since most of their 
> bikes are aluminum or CF with aluminum fixtures. 
>
> Andy Cheatham
> Pittsburgh 
>
>  
> On Tuesday, March 1, 2016 at 8:53:38 AM UTC-5, jandrews_nyc wrote:
>>
>> Hi
>> Looking for some advice here as what I got at a local bike shop yesterday 
>> seemed suspect.
>> A few days ago I noticed I had a broken spoke on my rear wheel.
>> I took the bike in and as it turned out, the shop replaced 5 rear spokes. 
>>  The mechanic seemed to think that the chain must've over shifted pretty 
>> hard into the wheel.  I don't remember that happening but I did wreck 
>> slightly a few weeks ago as the snow started falling and the bike went down.
>> So he fixed the wheel and trued it up.
>> I asked him about the derailleur hanger tab and he agreed that it's bent.
>> I told him that it's been bent before about 5 years ago and I had another 
>> mechanic professionally bend it back with the correct tool.  At that point 
>> he didn't want to attempt to bend it back since it's been done once before 
>> and the steel could break.
>> The rear derailleur will not shift well into either the largest cog or 
>> the smallest cog because of the bend.
>> When shifted into the smallest cog, the chain rubs on the hanger due to 
>> the inward bend and when shifting into the largest cog, the chain skates 
>> due to the angle of the pulley.  So we trimmed out both of those cogs and 
>> now my 8 speed cassette is effectively a 6 speed.  This is fine for the 
>> moment as I'm winter commuting but want to get it all sorted before spring.
>>
>>
>> What do you all think about the hanger? Will it break?  Shouldn't I just 
>> try it? Or is it better to take to a frame shop and have a new dropout put 
>> in?  I really don't want to do that and don't even know if I could get a 
>> new one from Riv.
>> Thanks in advance for your advice.
>> Jason
>> Photo below:
>>
>>
>> 
>>
>>

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[RBW] Re: derailleur hanger

[ascpgh]

Done with the right tool, the rear wheel mounted, a steel frame derailleur 
hanger can usually take the adjustment. Yours seems to be on the low end of 
the bent scale. Knackered ones are bent so much as to violate the integrity 
of the threaded hole or show the surface fractures of having bent too far. 

The tool, threaded into the derailleur mounting hole, protects its 
integrity and the mounted rear wheel stabilizes the dropouts' spacing, 
prevents twisting of the drive side dropout's opening while the rim 
provides a comparative indexing surface at points around the projected 
radius of the derailleur hanger mount. 

I scan the various sources for those tools often, I've used them in the 
shop and have a growing want for one myself now that shops are more 
interested in selling a new hanger tab as the only fix since most of their 
bikes are aluminum or CF with aluminum fixtures. 

Andy Cheatham
Pittsburgh 

 
On Tuesday, March 1, 2016 at 8:53:38 AM UTC-5, jandrews_nyc wrote:
>
> Hi
> Looking for some advice here as what I got at a local bike shop yesterday 
> seemed suspect.
> A few days ago I noticed I had a broken spoke on my rear wheel.
> I took the bike in and as it turned out, the shop replaced 5 rear spokes. 
>  The mechanic seemed to think that the chain must've over shifted pretty 
> hard into the wheel.  I don't remember that happening but I did wreck 
> slightly a few weeks ago as the snow started falling and the bike went down.
> So he fixed the wheel and trued it up.
> I asked him about the derailleur hanger tab and he agreed that it's bent.
> I told him that it's been bent before about 5 years ago and I had another 
> mechanic professionally bend it back with the correct tool.  At that point 
> he didn't want to attempt to bend it back since it's been done once before 
> and the steel could break.
> The rear derailleur will not shift well into either the largest cog or the 
> smallest cog because of the bend.
> When shifted into the smallest cog, the chain rubs on the hanger due to 
> the inward bend and when shifting into the largest cog, the chain skates 
> due to the angle of the pulley.  So we trimmed out both of those cogs and 
> now my 8 speed cassette is effectively a 6 speed.  This is fine for the 
> moment as I'm winter commuting but want to get it all sorted before spring.
>
>
> What do you all think about the hanger? Will it break?  Shouldn't I just 
> try it? Or is it better to take to a frame shop and have a new dropout put 
> in?  I really don't want to do that and don't even know if I could get a 
> new one from Riv.
> Thanks in advance for your advice.
> Jason
> Photo below:
>
>
> 
>
>

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[RBW] Re: derailleur hanger

[blakcloud]

I wouldn't hesitate to bend that back as long as you use the right tool.

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[RBW] Re: derailleur hanger

[Keith Muller]

That will easily straighten without an issue.  Please use a derailleur 
alignment gauge and do it correctly.  Crescent wrenches are a bad choice for 
that job.  A steel hanger can bend a good long way and still be straightened.  
I wouldn't be one bit nervous about straightening yours. 

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Re: [RBW] Re: derailleur hanger

[cyclotourist]

Yeah, that hangar is way off. This is usually  a pretty easy and rewarding
DIY job. The one-off tool is pricey, but does the job as advertised.
http://www.parktool.com/product/derailleur-hanger-alignment-gauge-dag-2-2


On Tue, Mar 1, 2016 at 1:13 PM, 'pb' via RBW Owners Bunch <
rbw-owners-bunch@googlegroups.com> wrote:

> Absolutely, positively, definitely straighten it.  No hesitation.  If, in
> fact, it has been bent so badly that it is starting to weaken, that will be
> apparent in the straightening process (it will begin to crack or obviously
> soften), but my bet is 99 to 1 for success.  Don't fall on it again, but if
> you do fall on it again, straighten it again.
>
> A big Crescent wrench is a useful down and dirty tool for straightening,
> but I'd hope that your shop will have a proper alignment tool, and that
> they will also eyeball the slot the axle slides into, to make sure the
> faces of the slot are still parallel.  If it has opened up a little, then a
> block of wood for padding, and a few taps with a hammer are the answer.
>
> Happy trails,
>
> Peter
>
>
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>



-- 
Cheers,
David

Member, Supreme Council of Cyberspace

"it isn't a contest. Just enjoy the ride." - Seth Vidal

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[RBW] Re: derailleur hanger

['pb' via RBW Owners Bunch]

Absolutely, positively, definitely straighten it.  No hesitation.  If, in 
fact, it has been bent so badly that it is starting to weaken, that will be 
apparent in the straightening process (it will begin to crack or obviously 
soften), but my bet is 99 to 1 for success.  Don't fall on it again, but if 
you do fall on it again, straighten it again.  

A big Crescent wrench is a useful down and dirty tool for straightening, 
but I'd hope that your shop will have a proper alignment tool, and that 
they will also eyeball the slot the axle slides into, to make sure the 
faces of the slot are still parallel.  If it has opened up a little, then a 
block of wood for padding, and a few taps with a hammer are the answer.   

Happy trails,

Peter  


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[RBW] Re: derailleur hanger

[Takashi]

I'm not sure if you can bend the hanger back twice, but you sure can get a 
new dropout from Riv.
It shouldn't be very expensive.
I had my Hunqa's dropout bent, and Riv sent me a new dropout:
https://groups.google.com/forum/?fromgroups#!searchin/rbw-owners-bunch/riding$20my$20hunqapillar$20again/rbw-owners-bunch/hzLhXdLnLak/PWZWM1gbBQAJ
https://www.flickr.com/photos/77318553@N08/23779095042/in/album-72157660316343503/

Good luck!

Takashi


2016年3月1日火曜日 22時53分38秒 UTC+9 jandrews_nyc:
>
> Hi
> Looking for some advice here as what I got at a local bike shop yesterday 
> seemed suspect.
> A few days ago I noticed I had a broken spoke on my rear wheel.
> I took the bike in and as it turned out, the shop replaced 5 rear spokes. 
>  The mechanic seemed to think that the chain must've over shifted pretty 
> hard into the wheel.  I don't remember that happening but I did wreck 
> slightly a few weeks ago as the snow started falling and the bike went down.
> So he fixed the wheel and trued it up.
> I asked him about the derailleur hanger tab and he agreed that it's bent.
> I told him that it's been bent before about 5 years ago and I had another 
> mechanic professionally bend it back with the correct tool.  At that point 
> he didn't want to attempt to bend it back since it's been done once before 
> and the steel could break.
> The rear derailleur will not shift well into either the largest cog or the 
> smallest cog because of the bend.
> When shifted into the smallest cog, the chain rubs on the hanger due to 
> the inward bend and when shifting into the largest cog, the chain skates 
> due to the angle of the pulley.  So we trimmed out both of those cogs and 
> now my 8 speed cassette is effectively a 6 speed.  This is fine for the 
> moment as I'm winter commuting but want to get it all sorted before spring.
>
>
> What do you all think about the hanger? Will it break?  Shouldn't I just 
> try it? Or is it better to take to a frame shop and have a new dropout put 
> in?  I really don't want to do that and don't even know if I could get a 
> new one from Riv.
> Thanks in advance for your advice.
> Jason
> Photo below:
>
>
> 
>
>

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[RBW] Re: derailleur hanger

[jandrews_nyc]

FYI
Here's the complete Bike
'08 S.H. powder-coated black



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