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Old 09-18-11, 02:05 PM   #1
mozad655
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fixing my shifters

By my bikes front deraileur I have 2 spiked chain rings (or whatever they are called) and by the rear derailleur I have 9 spiked chain rings. Does this mean that my shifters should only be able to shift 9 times on one side, and 2 on the other?
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Old 09-18-11, 02:09 PM   #2
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Originally Posted by mozad655 View Post
By my bikes front derailleur I have 2 spiked chain rings (or whatever they are called) and by the rear derailleur I have 9 spiked chain rings. Does this mean that my shifters should only be able to shift 9 times on one side, and 2 on the other?
If I understand you correctly, yes, that sounds right. However, the left-side shifter (which controls the front derailleur) might have additional "stops" so that you can "trim" the derailleur to avoid chain rub. It depends on the manufacturer and model of the shifters.
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Old 09-18-11, 02:25 PM   #3
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Thats exactly what happens with my left-side shifter, so thanks for clearyfying. Another thing that i'm having problems with is connecting the shifter cable to the front derailleur. How hard am i supposed to tighten the screw? and what about the small metal "stumb" by the screwer?
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Old 09-18-11, 02:29 PM   #4
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Yes, but not exactly. A 9s shifter has only 8 click to get from 1st (where it starts) to the 9th position. If you don't see this put your finger on the first knuckle of the other hand. Then count as you move to the opposite knuckle. Three moves from 1st to last of 4 knuckles.

The same applies to the front 2 positions, but only one move from one to the other.
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Old 09-18-11, 02:39 PM   #5
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Yes, but not exactly. A 9s shifter has only 8 click to get from 1st (where it starts) to the 9th position. If you don't see this put your finger on the first knuckle of the other hand. Then count as you move to the opposite knuckle. Three moves from 1st to last of 4 knuckles.

The same applies to the front 2 positions, but only one move from one to the other.
Yeh thats what i meant, thanks for correction. Any idea why the down (front derailleur) shifter only works when you press extremely hard, making a big abnormal noice? What coould this be due to? too loose or tight cable?
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Old 09-18-11, 02:50 PM   #6
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Yeh thats what i meant, thanks for correction. Any idea why the down (front derailleur) shifter only works when you press extremely hard, making a big abnormal noice? What coould this be due to? too loose or tight cable?
Neither looseness or tightness in the cable, whose proper length (tension) is set according to what gives correct trim the same as the rear.

Front shifting is always noisier for a few reasons; because it's a bigger jump, because it's on the power side of the chain loop as opposed to the return side for the RD (this is why you must ease up on pedal pressure to shift), and because rather than pulleys the FD only has a metal plat that the chain rubs against during the shift.

If the effort seems high, try it with little or no pedal pressure, and if it's still high look for a source of binding or friction along the cable run.

Also be aware that the return spring on the FD is often stiffer than that of the RD, so that alone might account for the difference.
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