How to Build a Road Bike Step 4, Hanging the Derailleurs

This is Step 4 of a multi-part series on how to build a road bike.  There is a free eBook available that gives you instant access to the following:
  1. FREE 43 page Full Color eBook – Available in PDF and iBook Format (iPhone/iPad)
  2. 15 FREE HD Step by Step Videos
  3. 110 FREE Full Color Pictures

NOTE*  All Park Tool pictures are courtesy of Park Tool.  Thank you Park Tool!

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To see Step 1, Installing your Bottom Bracket click here.
To see Step 2, Installing your Crankset and Pedals click here.
To see Step 3, Installing your Fork, Stem and Handlebar click here.
Step 4 – Hanging the Derailleurs
What you Need
  • Torque Wrench (TW-1 or TW-5)
  • Socket and Bit Set (SBS-1)
  • Hex Set (HXS-1.2) 
  • Park Polylube 1000 Lubricant (PPL-1)
  • Front Derailleur
  • Clamp on Front Derailleur Mounting Bracket (if required)
  • Rear Derailleur
Before you Get Started
  • Make sure your derailleurs are compatible with the number of gears on your crankset and cassette.

1.  Connect the front derailleur to the front derailleur-mounting bracket (braze on or clamp on) using the front derailleur-mounting bolt. Ensure the front derailleur cage is in line with the chain rings and that there is a 1-3mm gap between the top of the chain ring and the bottom of the front derailleur (see Figure 1).  See the video for additional information.

Figure 1

2.  Connect the front derailleur bolt using a 5mm hex.  Get it finger tight (see Figure 2).

Figure 2

3.  Torque the front derailleur bolt to the manufacturers recommended value using a torque wrench (see Figure 3).

Figure 3

4.  Apply a thin layer of lubrication to the rear derailleur threads (see Figure 4).

Figure 4

5.  Connect the rear derailleur to the rear derailleur hanger using a 5mm hex (see Figure 5).  Be sure to keep the B-Adjust washer tab above ledge on your rear derailleur hanger.  Please watch the rear derailleur video for additional information.

Figure 5

6.  Once finger tight, be sure to torque the rear derailleur to the manufacturers recommended value using a torque wrench (see Figure 6).

Figure 6

7.  You have now properly hung your front and rear derailleurs.

This completes the hanging of your derailleurs.
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