Do I need a new derailler hanger?

[Maz]

On my 2011 Specialized Allez, I recently had a fall on a roundabout (diesel or something on the road). Bike went from under me and I fell on my right side. When I got up and looked at the bike , at first it seemed OK, but later noticed on an uphill, that when I was on the small chainring and on a low gear on the rear, the derailler hit the spokes of the rear wheel.

Does this mean the hanger is bent or might it be something else?

On the pic with the circles on it, I've tried to show the scuff/impact points made with the road.
I've tried to show how the derailler appears to be bent inwards.
Bike's rideable, but only on the big chainring at the moment.
Thanks

 

[Yellow Saddle]

The answer is yes.

 

[si_c]

Yep, sorry.

Also looks like the derailleur cage might be a little bend also.

Edit: @Yellow Saddle beat me to it.

 

[I like Skol]

I would happily straighten that and use it while waiting for a replacement. Then keep the straightened one as emergency spare.

 

[Maz]

I would happily straighten that and use it while waiting for a replacement. Then keep the straightened one as emergency spare.

You mean you'd straighten out the bent hanger? Would you use a hammer on it?

 

[SkipdiverJohn]

You mean you'd straighten out the bent hanger? Would you use a hammer on it?

Just grab hold of the thing in situ and see how much it will straighten using a bit of persuasion. Hammers are the next stage if hand adjustment doesn't do the job.

 

[Rusty Nails]

You mean you'd straighten out the bent hanger? Would you use a hammer on it?

I've done that as a temporary fix, but using the pressure of heavy vice jaws to straighten it.

 

[screenman]

I would use the correct tool for the job.

 

[raleighnut]

^^^^^ +1, it might realign successfully or it might not, even if you fit a new un that will need 'fine tuning' with an alignment tool

 

[Yellow Saddle]

Just grab hold of the thing in situ and see how much it will straighten using a bit of persuasion. Hammers are the next stage if hand adjustment doesn't do the job.

No, please don't do this. Stop!

https://www.cyclechat.net/threads/how-borked-is-this-frame.250221/

and

https://www.cyclechat.net/threads/fall-when-stationary.206840/#post-4456245

 

[Cycleops]

Instead of a hammer or vice you can use an adjustable spanner. Close the jaws onto the hanger and pull (or push).

 

[Yellow Saddle]

Instead of a hammer or vice you can use an adjustable spanner. Close the jaws onto the hanger and pull (or push).

Don't do that. That's very poor advice. Stop.

 

[rrarider]

I wouldn't try to straighten it whilst it is still attached to the frame. The force will be transmitted to the frame which might bend, or worse, crack.

 

[SkipdiverJohn]

I wouldn't try to straighten it whilst it is still attached to the frame. The force will be transmitted to the frame which might bend, or worse, crack.

Any bike frame which is so weak that it won't tolerate a derailleur cage being realigned whilst still fitted to the bike is not fit for purpose. It's piece of flimsy junk.

 

[Spiderweb]

Just replace the hanger, they’re not expensive, maybe £11.