SRAM Apex 1 Rear Derailleur User Manual

1. Introducció

This manual provides essential information for the proper installation, operation, and maintenance of your SRAM Apex 1 Rear Derailleur. Designed for 1x (single chainring) drivetrains, the Apex 1 derailleur offers reliable and precise shifting performance for various cycling disciplines, including road, gravel, and cyclocross. Its long cage design accommodates a wide range of cassette sizes, and features like the Roller Bearing Clutch and Exact Actuation technology ensure consistent chain tension and crisp shifts.

2. Característiques del producte

• Pulleys have sealed cartridge bearings for smooth operation and durability.
• Roller Bearing Clutch and parallelogram design combine to minimize chain bounce, making the drivetrain safer and quieter over rough terrain.
• Not compatible with multiple chainring drivetrains; designed specifically for 1x setups.
• Aluminum cage and parallelogram construction for a balance of strength and weight.

3. Informació de seguretat

Always prioritize safety when working with bicycle components. Incorrect installation or adjustment can lead to serious injury or damage to your bicycle. If you are unsure about any step, consult a qualified bicycle mechanic.

• Utilitzeu equips de seguretat adequats, inclosa la protecció ocular, durant la instal·lació i el manteniment.
• Ensure your bicycle is stable and secure in a work stand before beginning any work.
• Keep hands and clothing clear of moving parts, especially the chain and cogs, when the wheel is spinning.
• Regularly inspect your derailleur and drivetrain for wear, damage, or loose components.

4. Contingut del paquet

Your SRAM Apex 1 Rear Derailleur package should contain the following:

• SRAM Apex 1 Rear Derailleur (Long Cage)
• Manual d'instruccions (aquest document)

Please check all contents upon receipt. If any items are missing or damaged, contact your retailer.

5. Configuració i instal·lació

Proper installation is crucial for optimal performance. This section provides general guidelines. Refer to detailed SRAM technical manuals for specific torque specifications and precise adjustment procedures.

5.1. Eines necessàries

• Hex wrenches (typically 5mm)
• Cortacables
• Clau dinamométrica (recomanada)

5.2. Mounting the Derailleur

Thread the derailleur onto the derailleur hanger. Ensure it is fully seated and tighten the mounting bolt to the manufacturer's specified torque. A torque wrench is highly recommended to prevent overtightening or undertightening.

Figura 1: Frontal view of the SRAM Apex 1 Rear Derailleur, showing the main body and cage.

5.3. Cable Routing and Attachment

Route the shift cable through the frame and housing to the derailleur. Secure the cable to the derailleur's cable anchor bolt, ensuring proper tension. Trim excess cable and install a cable end cap.

5.4. Limit Screw Adjustment

Adjust the High (H) and Low (L) limit screws to prevent the chain from shifting beyond the smallest and largest cogs, respectively. This protects the chain from falling off the cassette and prevents damage to the derailleur or spokes.

Figura 2: Primer pla view highlighting the adjustment points for the limit screws on the derailleur body.

5.5. B-Tension Adjustment

The B-tension screw adjusts the gap between the upper guide pulley and the cassette cogs. Proper B-tension is critical for smooth shifting across the entire cassette range. Adjust according to SRAM's specific guidelines for your cassette size.

Figura 3: Detallada view of the derailleur's upper body, indicating the location of the B-tension screw.

6. Instruccions de funcionament

The SRAM Apex 1 Rear Derailleur is designed for 1x drivetrains, meaning you only have a single shifter for the rear gears. Shifting is intuitive and precise.

6.1. Canvi de marxes

Use your compatible SRAM 1x shifter to change gears. Pushing the lever in one direction will shift the chain to a larger cog (easier gear), and pushing it in the other direction will shift to a smaller cog (harder gear). Always pedal forward while shifting to ensure smooth transitions and prevent damage to the drivetrain.

Figura 4: lateral view of the derailleur, illustrating the pulley wheels and cage mechanism responsible for guiding the chain.

6.2. Roller Bearing Clutch Engagement

The Roller Bearing Clutch helps manage chain tension and prevent chain slap. It is always engaged during riding. There is no manual on/off switch for this feature on the Apex 1 derailleur.

7. Manteniment

Regular maintenance extends the life of your derailleur and ensures consistent performance.

• Neteja: After each ride, especially in dirty or wet conditions, clean the derailleur body, cage, and pulleys. Use a mild degreaser and a brush, then rinse thoroughly.
• Lubricació: Apply a small amount of chain lubricant to the pivot points of the derailleur and the pulley bearings periodically. Avoid over-lubrication, which can attract dirt.
• Cable and Housing: Inspect shift cables and housing for fraying, kinks, or corrosion. Replace them if necessary, as damaged cables can significantly impair shifting performance.
• Inspecció de politges: Check the pulley wheels for wear or damage. Worn pulleys can lead to poor shifting and increased drivetrain noise. Replace them if the teeth appear sharp or hooked.
• Alineació del penjador: A bent derailleur hanger is a common cause of poor shifting. If shifting issues persist after other adjustments, have your hanger checked and aligned by a professional.

8. Solució De Problemes

Aquí teniu alguns problemes comuns i les seves possibles solucions:

• Poor Shifting / Ghost Shifting:
  - Check cable tension. Too loose or too tight can cause issues.
  - Verify limit screw settings.
  - Inspect derailleur hanger for alignment.
  - Check for worn or damaged shift cable and housing.
• Chain Skipping / Jumping Gears:
  - Incorrect B-tension adjustment.
  - Worn cassette or chain.
  - Bent derailleur hanger.
  - Damaged pulley wheels.
• Excessive Drivetrain Noise:
  - Insufficient lubrication.
  - Dirty or worn chain/cassette.
  - Incorrect B-tension.
  - Misaligned derailleur hanger.
• Derailleur Not Moving:
  - Seized pivot points (clean and lubricate).
  - Severely damaged cable or housing.
  - Derailleur is bent or broken.

If you cannot resolve an issue, consult a professional bicycle mechanic.

9. Especificacions

10. Garantia i Suport

SRAM products are manufactured to high standards and come with a limited warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the official SRAM website or contact your authorized SRAM dealer.

For technical support, detailed installation guides, or further assistance, please visit the official SRAM weblloc: www.sram.com