1. Product Overview
The microSHIFT Advent Super Short Rear Derailleur is designed for 9-speed drivetrains, offering precise shifting and durability. Its compact, super short cage design is optimized for smaller wheeled bikes, providing enhanced chain retention and smooth gear transitions. Constructed with a fully metal body, it ensures rigidity and resistance to impact and wear.
Image 1: The microSHIFT Advent Super Short 9-Speed Rear Derailleur, showcasing its compact design and robust construction.
2. Key Features
- Lightweight, Durable Construction: Made from aluminum alloy for long-lasting performance and resistance to impact and corrosion.
- Advanced Clutch Technology: Features microSHIFT's ratchet-and-pawl clutch system for superior chain retention, minimizing chain slap on varied terrain.
- 9-Speed Compatibility: Designed for 20-inch wheel bikes and compatible with 9-speed drivetrains, supporting 11-34T to 11-38T cassettes.
- Super Short Cage Design: Provides responsive shifting, improved bike handling, and a sleek aesthetic for compact, performance-oriented bikes.
- Easy Maintenance: Direct cable routing and an easily adjustable clutch system ensure precise, responsive shifts with minimal upkeep.
3. Setup and Installation
3.1 Tools Required
- Hex key set (typically 4mm, 5mm)
- Cable cutters
- Torque wrench (recommended)
- Chain whip and cassette lockring tool (if replacing cassette)
- Chain tool (if adjusting chain length)
3.2 Installation Steps
- Remove Old Derailleur (if applicable): Shift to the smallest cog, loosen the cable anchor bolt, and remove the derailleur from the hanger using an appropriate hex key.
- Install New Derailleur: Thread the new microSHIFT Advent derailleur onto the derailleur hanger. Ensure it is properly seated and tighten the mounting bolt to the manufacturer's specified torque (refer to your bike's or derailleur's specific torque settings).
- Install Chain: Route the chain through the derailleur cage. Ensure the chain is correctly routed over the guide pulley and tension pulley.
- Attach Shift Cable: Route the shift cable from the shifter to the derailleur. Pull the cable taut and secure it to the derailleur's cable anchor bolt. Do not overtighten initially.
- Adjust Limit Screws:
- High Limit (H) Screw: Adjust the H-screw so that the upper guide pulley aligns with the smallest cog when the chain is on the smallest cog. This prevents the chain from shifting off the cassette towards the frame.
- Low Limit (L) Screw: Shift the chain to the largest cog. Adjust the L-screw so that the upper guide pulley aligns with the largest cog. This prevents the chain from shifting into the spokes.
- Adjust B-Tension Screw: This screw adjusts the gap between the upper guide pulley and the cassette cogs. Adjust it to achieve optimal chain wrap and smooth shifting across all gears. There should be a small, consistent gap (typically 5-6mm) between the upper pulley and the cogs.
- Fine-Tune Shifting: With the chain on the smallest cog, turn the barrel adjuster on the shifter or derailleur clockwise until the chain begins to make noise or attempts to shift to a smaller cog. Then, turn it counter-clockwise one click at a time until shifting is smooth and quiet. Test all gears to ensure proper function.
4. Operation
The microSHIFT Advent Super Short Rear Derailleur operates by moving the chain across the cassette cogs in response to input from the shifter. To shift gears, actuate your compatible 9-speed microSHIFT Advent shifter. The derailleur's precise mechanism and clutch system ensure quick, accurate, and reliable gear changes, even under load or on rough terrain. Always apply light pedal pressure when shifting to facilitate smooth transitions and prevent undue stress on the drivetrain components.
5. Maintenance
Regular maintenance is crucial for optimal performance and longevity of your derailleur.
- Cleaning: Periodically clean the derailleur, especially the pulleys and cage, to remove dirt, grime, and old lubricant. Use a degreaser and a brush, then rinse thoroughly.
- Lubrication: After cleaning, apply a suitable bicycle chain lubricant to the chain and a small amount to the pivot points of the derailleur. Wipe off any excess lubricant.
- Inspection: Regularly inspect the derailleur for any signs of damage, wear, or looseness in the mounting bolt or pivot points. Check the shift cable for fraying or corrosion.
- Clutch Adjustment: The ratchet-and-pawl clutch is designed to be easily adjustable and repairable. If chain retention decreases, consult a professional bike mechanic for clutch inspection and adjustment.
6. Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Poor or slow shifting | Incorrect cable tension, bent derailleur hanger, worn cable/housing, dirty drivetrain. | Adjust barrel adjuster, check derailleur hanger alignment, replace cable/housing, clean and lubricate drivetrain. |
| Chain skipping or jumping gears | Incorrect limit screw adjustment, worn chain/cassette, B-tension incorrect. | Re-adjust limit screws, check B-tension, inspect chain and cassette for wear and replace if necessary. |
| Excessive chain slap | Clutch not engaged or needs adjustment, chain too long. | Ensure clutch is engaged (if applicable), consult a mechanic for clutch adjustment, verify correct chain length. |
If issues persist after attempting these solutions, it is recommended to consult a professional bicycle mechanic.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | RD-M6195S |
| Brand | microSHIFT |
| Speed | 9 Speed |
| Cage Length | Super Short |
| Material | Metal (Aluminum Alloy) |
| Color | Black |
| Mounting Type | Braze-On Mount |
| Cassette Compatibility | 11-34T up to 11-38T |
| Chain Wrap Capacity | 27T |
| Special Features | Ratchet-and-pawl clutch system, direct cable routing |
8. Warranty Information
This microSHIFT Advent Super Short Rear Derailleur comes with a Limited Warranty. For specific terms, conditions, and duration of the warranty, please refer to the official microSHIFT warranty documentation provided with your purchase or visit the microSHIFT official website.
9. Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact microSHIFT customer support. Contact information can typically be found on the microSHIFT official website or in the packaging materials included with your product.
