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Bicycle Repair/Front derailer problem..?

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Question
I had to change the cable going to the front derailer...
I'm not sure what happened
if I pull up on the back side of the derailer by hand,
the derailer extends and retracts like it is supposed to... However when I put the cable back on, it only wants to pull the derailer down and it does not move downward...  the cable  pulls downward and nothing moves..?.. Do you have any idea of what I did wrong...?

Thank you for your help Regards Rolfe

Answer
Front derailers come in two basic configurations, dictated by the direction in which the shifter cable approaches or "pulls" on the derailer actuator arm. Some derailers allow both configurations; depending on which direction the cable attaches to the anchor bolt. It sounds like you've got a "dual-pull" derailer, but that you've installed the cable incorrectly. Try reversing the direction of connection, paying attention to the cables trajectory-in some examples, the cable must first pass around a pulley-like structure on its way to the anchor bolt. Remember, regardless of the derailer pull direction, adding cable tension to the system should cause the derailer cage to move to the right (Higher) or larger chainrings, while releasing tension allows the derailer to return to the smaller chainrings.  

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James Novak

Expertise

I can answer most inquiries with respect to bicycle assembly, repair, tuning and maintenance. I am less than inclined to speak on such questions as "What kind of bike should I buy?", &/or "What is this bike worth?", etc. Any answers to these types of questions may correlate poorly to an acceptable "fact/sarcasm" ratio.

Experience

7 seasons of "Professional" bicycle service/repair, etc. 4 seasons as Instructor, Professional Bicycle Mechanic training college. n-1 seasons of riding, cracking, crushing, mutilating and breaking bikes of any & all varieties, and thus requiring intense and at-hand skills development, etc.

Education/Credentials
Certified Professional Bicycle Mechanic; Winterborne Bicycle Institute/Conestoga College

Past/Present Clients
The Hub Bicycle Shop, Hespeler Winterborne Bicycle Institute

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