QR moves RD hanger?

User avatar
MattyK
Posts: 2320
Joined: Fri Oct 01, 2010 1:07 pm
Location: Melbourne

QR moves RD hanger?

Postby MattyK » Sat May 12, 2018 6:16 pm

One for duck or anyone else. I noticed tonight while reinstalling the rear wheel that clamping up the quick release made the RD hanger bend about 3mm inwards, moving the derailleur with it.

I don’t have any shifting issues (for the moment though they have existed in the past; 5700) it’s just an observation, so I’m curious how common/normal this is.

User avatar
Duck!
Expert
Posts: 6792
Joined: Tue May 21, 2013 8:21 pm
Location: On The Tools

Re: QR moves RD hanger?

Postby Duck! » Sat May 12, 2018 6:54 pm

It means the hanger is bent at the mounting hole/s. Check for signs of fatigue around the mount bolt/s and replace if it looks dicey.
I had a thought, but it got run over as it crossed my mind.

User avatar
MattyK
Posts: 2320
Joined: Fri Oct 01, 2010 1:07 pm
Location: Melbourne

Re: QR moves RD hanger?

Postby MattyK » Sat May 12, 2018 9:18 pm

No sign of anything bent or cracked or damaged in any way. Here it is in action...
https://youtu.be/ybAAB3KNtk8

User avatar
Tim
Posts: 1922
Joined: Wed Jul 07, 2010 5:02 pm
Location: Gippsland Lakes

Re: QR moves RD hanger?

Postby Tim » Sun May 13, 2018 9:50 am

Are the screws from the derailleur to the frame tight?

User avatar
MattyK
Posts: 2320
Joined: Fri Oct 01, 2010 1:07 pm
Location: Melbourne

Re: QR moves RD hanger?

Postby MattyK » Mon May 14, 2018 10:01 am

Tim wrote:Are the screws from the derailleur to the frame tight?

I don't think so but I'll double check. Though I'm loathe to do anything as it's shifting sweeter at the moment than it ever has!

human909
Posts: 8668
Joined: Tue Dec 01, 2009 11:48 am

Re: QR moves RD hanger?

Postby human909 » Mon May 14, 2018 9:08 pm

It is kinda common in my experience, and in many respects it is to be expect to some degree.

Unless your derailleur hanger is perfectly parallel with the frame and mounting bolt then movement is to be expected. Unless you have perfectly machined surfaces then perfectly parallel is not likely. (To my knowledge neither the hangers not the frame surface is machined smooth and parallel.)

Add this to the fact that hangers can readily get knocked and slightly bent and you get this scenario.


All that said your movement does seem more common than normal but if things are shifting smoothly then I wouldn't worry about it.

User avatar
OnTrackZeD
Posts: 137
Joined: Sat Aug 03, 2013 12:35 pm

Re: QR moves RD hanger?

Postby OnTrackZeD » Tue May 15, 2018 12:48 pm

Looks like you're 12 speed ready.

Who is online

Users browsing this forum: No registered users