Should i attempt to fix this myself?

[jahlive905]

So last week this happened:

defailleur

• jahlive905
• 29 Sep 2015

I'm in no major rush to fix it and want to learn more about how to look after my bike anyway. I'm still new to cycling and bikes. I can change an inner, brake pads and the brake cable but that's about it. So my question is, using youtube and internet resources, is it safe for me as a relative newbie to fit a new derailleur in your opinion?

 

[jonny jeez]

I always like the challange of giving it a go myself, plus I really enjoy finding out more and more about my bike and how she runs.

Give it a go, you can't make it any worse.

Not much anyhow.

 

[Simpleton]

You can however:

You'll need to order a new gear hanger, I presume the one on the bike has snapped.

Check the wheel or any damaged spokes where the mech came into contact.

You'll also need some tools namely a chain tool, pliers, wire cutters, and a 5mm allen key. But a rear mech being changed can be done quite easily. I'd be more worried about the potential damage this one has done going into the wheel like that.

 

[Smurfy]

It doesn't look like a huge job, but I can't really see from the picture how the frame and mech parted company. Is the dropout snapped?

Take your time and there will be plenty on here to help.

 

[Andy_R]

The bike is now totally fekked and is a potential death trap. I'll take it of your hands for a tenner.

 

[Tim Hall]

It doesn't look like a huge job, but I can't really see from the picture how the frame and mech parted company. Is the dropout snapped?

Take your time and there will be plenty on here to help.

Looks like a bolt on hanger which has snapped to save the frame. @jahlive905 If you got the bike from Evans there might/should be a spare hanger in the green info book they gave you. Otherwise order a new one from your LBS. You won't necessarily need a chain tool, if the existing one has a quick link in it and isn't damaged.

 

[PatrickPending]

as previously stated new hanger - possibly new mech to0 - if it got bent or damaged, - something similar happened to me - hedge cutting season and a twig ended up in the back wheel and the rear mech was taken in too. I also changed the cassette and chain, rear mech cable and mech (a plate snapped on it!). not too difficult and plenty of facetube videos.

 

[MikeW-71]

I got a spare hanger for the Defy at Pedalon.

Why did it do that? I nearly had the same happen to me when the sideplate of the joining link of my chain snapped. I suspect it happened when I forced it to shift under extreme duress on a 20% climb. It ran OK for a while afterwards, then jammed in the mech. Luckilly I was pedalling very easily when it did so, or I'd have ripped the mech off just like that.

The hanger is dead easy to fit and a mech is not difficult either. Check the wheel carefully for damage though.

 

[mickle]

What a horrible thing to have happen.

 

[jahlive905]

Off to buy a new rear hanger. Cheers all.

 

[Arjimlad]

My son's mech hanger snapped last night after a little bit of twig jammed the chain into a jockey wheel.

The derailleur/cage/chain etc all look OK so I am hoping that just renewing the mech hanger will sort it out this evening.

 

[lpretro1]

Typical occurence when changing down under load....

 

[screenman]

Not one mention of needing to align the new one.

 

[Apollonius]

Let's not forget the other possibility is that the L screw was out of adjustment and the mech caught the spokes. In that case some careful adjustment will be needed after the new hanger is fitted. Almost certainly necessary whatever.

 

[Dogtrousers]

Putting the transmission back together should be fun and instructive, and you can always take it in to get it checked if you're unsure of your work and have a friendly LBS. However, if the wheel has been damaged (damaged spokes, gone out of true) then I personally would get that looked at by someone versed in wheely mysterious arts.