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#1
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Rear Derailleurs
I currently have a rear derailleur on my bike which is screwed to the
frame, and then has the space for the rear axle just like the one shown in the pic (although mine is a Shimano one): http://ec3.images-amazon.com/images/...CLZZZZZZZ_.gif Looking at new ones, as shown (http://www.chainreactioncycles.com/M...?ModelID=11969) they attach differently....I assume then this style has replaced the old type its not possible to fit these new ones?? |
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#2
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Rear Derailleurs
Great Eastern wrote on 13/01/2007 14:39 +0100:
I currently have a rear derailleur on my bike which is screwed to the frame, and then has the space for the rear axle just like the one shown in the pic (although mine is a Shimano one): http://ec3.images-amazon.com/images/...CLZZZZZZZ_.gif Looking at new ones, as shown (http://www.chainreactioncycles.com/M...?ModelID=11969) they attach differently....I assume then this style has replaced the old type its not possible to fit these new ones?? The one you have is the silver metal plate called a hanger and the derailleur screwed into it. It looks like your's has a cover over the allen bolt which screws the two together and you should be able to remove that and unscrew it from the hanger and screw the new one in its place. What you remove will look like the chain reaction link picture and the allen bolt is that round hole on the top left. The hanger bit on its own will look a bit like one of these: http://www.chainreactioncycles.com/S...hanger&x=0&y=0 -- Tony "...has many omissions and contains much that is apocryphal, or at least wildly inaccurate..." Douglas Adams; The Hitchhiker's Guide to the Galaxy |
#4
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Rear Derailleurs
Rob Morley wrote:
In article , Great Eastern says... I currently have a rear derailleur on my bike which is screwed to the frame, and then has the space for the rear axle just like the one shown in the pic (although mine is a Shimano one): http://ec3.images-amazon.com/images/...CLZZZZZZZ_.gif Looking at new ones, as shown (http://www.chainreactioncycles.com/M...?ModelID=11969) they attach differently....I assume then this style has replaced the old type its not possible to fit these new ones?? The ones with the integral bracket are el cheapo - both types have been available for a long time. If the bracket on your mech isn't removable you can get a separate one that will allow the fitting of a better mech to your frame. Or those with the bracket are ancient. I have an 1980's one with a removable bracket (Shimano), supplied with the bracket. The usual (modern) fitting allen screw removes the mechanism from the bracket. Off topic link for the OP: http://www.nigelcliffe.photobook.org.uk/c310576.html -- Nigel Cliffe, Webmaster at http://www.2mm.org.uk/ |
#5
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Rear Derailleurs
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#6
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Rear Derailleurs
Rob Morley wrote:
In article , Nigel Cliffe says... Rob Morley wrote: The ones with the integral bracket are el cheapo - both types have been available for a long time. If the bracket on your mech isn't removable you can get a separate one that will allow the fitting of a better mech to your frame. Or those with the bracket are ancient. I have an 1980's one with a removable bracket (Shimano), supplied with the bracket. The usual (modern) fitting allen screw removes the mechanism from the bracket. By 'integral' I meant fixed rather than removable. OK, agree with your "el cheapo" description. - Nigel -- Nigel Cliffe, Webmaster at http://www.2mm.org.uk/ |
#7
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Rear Derailleurs
in message , Great Eastern
') wrote: I currently have a rear derailleur on my bike which is screwed to the frame, and then has the space for the rear axle just like the one shown in the pic (although mine is a Shimano one): http://ec3.images-amazon.com/images/...CLZZZZZZZ_.gif Used to be common in the 1960s, now only on the very cheapest derailleurs. Looking at new ones, as shown (http://www.chainreactioncycles.com/M...?ModelID=11969) Now almost universal. they attach differently....I assume then this style has replaced the old type its not possible to fit these new ones?? It isn't as bad as that. What's changed is that the derailleur hanger (the hooky bit at the top of the first picture) is now normally part of the frame (or else is a special fitting to the frame). This helps to make the alignment more precise. But the old style hook-on-the-axle hangers still work, and if you unbolt the one from your old derailleur you will almost certainly find that your new derailleur will bolt straight onto it. -- (Simon Brooke) http://www.jasmine.org.uk/~simon/ ;; Life would be much easier if I had the source code. |
#8
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Rear Derailleurs
In case you can't unbolt the hanger from rest of mech, you can buy another
one separately: http://www.sjscycles.co.uk/product-0...g-bolt-420.htm ~PB |
#9
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Rear Derailleurs
Simon Brooke wrote:
It isn't as bad as that. What's changed is that the derailleur hanger (the hooky bit at the top of the first picture) is now normally part of the frame (or else is a special fitting to the frame). This helps to make the alignment more precise. But the old style hook-on-the-axle hangers still work, and if you unbolt the one from your old derailleur you will almost certainly find that your new derailleur will bolt straight onto it. Thanks to everyone for the replies, I can see what you mean now regarding the parts, however I doubt I'm going to find a replacement which is suitable for a 6 speed! |
#10
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Rear Derailleurs
Great Eastern wrote:
Thanks to everyone for the replies, I can see what you mean now regarding the parts, however I doubt I'm going to find a replacement which is suitable for a 6 speed! I know that one shouldn't follow up on ones own posts but... ....I've just realised, it doesn't matter does it. an 8 or 9 speed deraileur will work on 6 no fuss...its if I were trying to do the opposite I'd have problems. |
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