Tuning the Front Derailleur

Here is the second section on derailleur tuning - Front Derailleurs.

Stuff you'll be needing
- Screwdrivers
- Hex Tools

(1) Mounting Adjustments

Position the angle of the derailleur on the front tube, so that it is parallel with the chain.

(2) Limiters

The limiters stop the chain from jumping off the end of the cogs. The 'H' screw changes the limits on the big cog, and the 'S' screw changes the limits on the small cog. Tune in quarter turn increments, and tune it so that the chain jumps onto the cogs easily without popping off the edge or grinding against the derailleur.

(3) Cable Tension

Using the cable fixing bolt on the derailleur, you can tune the tension of the cable. If the cable is too tight, the chain will not be able to shift to the inner cog. The cable needs to be tight, so that it responds as soon as you start shifting.

(4) Final checks

Lubricate the moving parts, and go for a test ride, to make sure everything is working as intended.