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Topic # 142734 22-Mar-2014 19:16
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My 15 yo son rides his bike pretty hard so the odd breakage is inevitable.
He has snapped, what I believe is called, the derailleur hanger.
We'll need take it to the shop to get fixed as it appears to need some specialist tools to remove and re-install.
I'm keen to hear from someone who knows about this sort of stuff please, to give me an idea of how much I can expect to pay for this repair.
(The bike is a GT Aggressor, if that's relevant at all.)





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  Reply # 1011112 22-Mar-2014 19:19
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Around $60. A mate of mine keen on his BMX bikes and does work on the 24/7 for people and himself reckons around that.





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  Reply # 1011179 22-Mar-2014 22:27
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Probably between $40-60 at a bike shop.  There is very little labour involved and the main cost is sourcing the part.

 
 
 
 


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  Reply # 1011183 22-Mar-2014 22:40
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Yep. A common problem but easily fixed, little more than bolt on new part. The GT Aggressor from memory has pretty basic Shimano components so parts should be readily available. Expect about $50 as already mentioned.




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  Reply # 1011212 23-Mar-2014 05:42
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Thanks all.





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  Reply # 1011223 23-Mar-2014 08:38
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Newer bikes generally have a replaceable derailleur hanger, usually involves taking the rear wheel off and undoing a 5-6mm Allen key. Older and cheaper bikes have it as part of the frame, if it's broken, you have to braze a new one on, or convert to single speed. To remove the derailleur usually it is a 5mm Allen key. To ensure the gear shifting works correctly the hanger must be aligned with the frame, often when you break one off, it bends the frame mount slightly. I always straighten them up with a large adjustable spanner, like a 12" Crescent. Get your son to do his own repairs, he'll learn a whole lot, you might save some coin, but greater than that, when he knows how it works he probably won't break it again.

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  Reply # 1011246 23-Mar-2014 09:34
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  Reply # 1011339 23-Mar-2014 13:39
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I used to have a derailleur guard when i was cycling, prevents the components from hitting the ground before the bike frame. Bolts on easily, lightweight and pretty cheap.




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  Reply # 1011458 23-Mar-2014 18:48
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All fixed.  Thanks to my 5.5mm allen key, the good advice from the nice people here, youtube,  the man at the bike shop and a $45 replacement hanger (which does seem rather a lot for a piece of metal with a couple of holes, but it costs what it costs I guess).  It has been a constructive and educational Sunday.





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  Reply # 1011459 23-Mar-2014 18:51
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well done, never had to do that with any of my bikes yet, fingers crossed.






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