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Mounting the rear derailleur
What do I need to mount a Campagnolo Veloce derailleur on this frame ?
http://i1071.photobucket.com/albums/...pskfeeouoq.jpg |
Frames like that (horizontal dropouts) were made for single-speed / fixed-gear type drivetrains (i.e., no shifting). Without a derailleur, the only way to adjust the cable tension is to slide the wheel back and forth (thus the horizontal dropouts).
Also, the spacing on that frame is almost certainly 120mm -- you only need room for one gear. Modern rear derailleurs (for anything newer than 8-speed setups) require 130mm of spacing. So there's not only no place to put the derailleur, there's no room for the gears for the derailleur to shift through. i.e., the short answer to your question is that "you don't". |
Post #3
Originally Posted by KevinF
(Post 17857975)
Frames like that (horizontal dropouts) were made for single-speed / fixed-gear type drivetrains (i.e., no shifting). Without a derailleur, the only way to adjust the cable tension is to slide the wheel back and forth (thus the horizontal dropouts).
Also, the spacing on that frame is almost certainly 120mm -- you only need room for one gear. Modern rear derailleurs (for anything newer than 8-speed setups) require 130mm of spacing. So there's not only no place to put the derailleur, there's no room for the gears for the derailleur to shift through. i.e., the short answer to your question is that "you don't". |
Post #4
Sorry... wrong picture. I haven't received the frame yet and downloaded a picture from a different product :)
THIS is the right one (700c black), so the mounting should be straight forward ? http://i1071.photobucket.com/albums/...psmngjwqhx.jpg |
Me, I'm just moving this thread to Bike Mechanics forum (from Fitting your Bike). Carry on...
--Juha, a Forum Mod |
Mounting the derailleur should be straightforward, just be careful not to bend the B screw in the process, keep it clear of the hanger tang. I would suggest that you obtain a spare derailleur hanger (or two, they are cheap) for future use and that you check or have checked the hanger alignment before installation. The frame and/or hanger are often not perfectly straight even when new.
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Originally Posted by dsbrantjr
(Post 17858077)
Mounting the derailleur should be straightforward, just be careful not to bend the B screw in the process, keep it clear of the hanger tang. I would suggest that you obtain a spare derailleur hanger (or two, they are cheap) for future use and that you check or have checked the hanger alignment before installation. The frame and/or hanger are often not perfectly straight even when new.
Anyway, the installation of the derailleur should be easy enough. The new Campy derailleurs have a cage adjustment screw an no B-Screw. But, as dsbrantjr satys, just be careful with the stops and gently put it on. Of course, you'll also need shifters, derailleur cable, and some cable housing and housing ends. I've started tig welding my cable ends, but it is nice if you can do something to keep them from fraying. Soldering, crimps, etc (stainless is harder to solder than galvanized). |
Post #16
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