The Shimano HB-6700 [paid link], part of the Ultegra series, is a high-performance front hub renowned for its durability and smooth operation. Proper installation, adjustment, and maintenance are crucial to ensure optimal performance and extend the hub’s lifespan.
Installation of the Shimano HB-6700 [paid link] Hub
Preparation
Before beginning the installation, ensure you have the following tools:
- 5 mm hexagon wrench
- Grease suitable for bicycle bearings
- Torque wrench [paid link]
Installation Steps
- Wheel Building: Incorporate the HB-6700 [paid link] hub into the wheel by lacing the spokes according to the desired pattern. Ensure even tension across all spokes to maintain wheel integrity.
- Fork Compatibility: Verify that the front fork is compatible with the hub’s over-locknut dimension (OLD) of 100 mm.
- Hub Placement: Position the hub between the fork dropouts, ensuring the axle fits snugly.
- Quick Release Skewer: Insert the quick release skewer through the hub axle. Ensure the adjusting nut is on the side opposite the quick release lever.
- Securing the Hub: Close the quick release lever, ensuring it’s tight enough to secure the wheel but not overly tight to cause damage. The lever should leave an imprint on your palm when closed properly.
Adjustment of the Shimano HB-6700 Hub
Bearing Adjustment
Proper bearing adjustment ensures smooth wheel rotation and prolongs bearing life.
- Axle Removal: Using two 5 mm hexagon wrenches, loosen and remove the left-side lock nut and cone. Carefully slide the axle out from the right side, ensuring not to lose any bearings.
- Cone Adjustment: Thread the cone back onto the axle, adjusting it to eliminate any play but ensuring it’s not too tight to hinder rotation.
- Reassembly: Reinsert the axle into the hub, place bearings appropriately, and reattach the left-side cone and lock nut. Tighten securely using the hexagon wrenches.
Maintenance of the Shimano HB-6700 Hub
Regular maintenance is vital for the longevity and performance of the hub.
Cleaning and Lubrication
- Disassembly: Remove the wheel from the bicycle. Using two 5 mm hexagon wrenches, remove the lock nuts and cones from both sides. Extract the axle carefully.
- Cleaning: Remove bearings and clean them along with the hub’s interior using a degreaser. Wipe all components dry with a clean cloth.
- Inspection: Examine bearings, cones, and races for signs of wear or damage. Replace any compromised components.
- Lubrication: Apply a generous amount of high-quality bicycle bearing grease to the bearings and the hub’s interior surfaces.
- Reassembly: Place bearings back into the hub, insert the axle, and reattach cones and lock nuts. Ensure proper bearing adjustment as previously described.
Frequency of Maintenance
It’s recommended to service the hub annually or every 5,000 kilometers, whichever comes first. However, riders frequently encountering wet or muddy conditions should consider more frequent maintenance.
Troubleshooting Common Issues with the Shimano HB-6700 Hub
Issue: Rough or Gritty Rotation
Cause: Contaminants such as dirt or water have entered the hub, or the bearings are worn.
Solution: Disassemble the hub, clean all components thoroughly, inspect and replace worn bearings, lubricate, and reassemble.
Issue: Lateral Play in the Wheel
Cause: Improper bearing adjustment or loose lock nuts.
Solution: Adjust the bearing preload by tightening the cones appropriately and ensure lock nuts are securely fastened.
Customization and Optimization for Better Performance
To enhance the performance of the HB-6700 hub:
- Bearing Upgrade: Consider upgrading to higher-grade bearings for reduced rolling resistance and increased durability.
- Regular Maintenance: Adhere to a consistent maintenance schedule to ensure optimal performance and longevity.
Comparison with Similar Models
When comparing the HB-6700 to other models:
- HB-6800 [paid link]: An updated version with improved sealing and slightly reduced weight.
- HB-5700 [paid link]: A more affordable option with similar performance but slightly heavier.
The HB-6700 strikes a balance between performance and weight, making it a preferred choice for many cyclists.
Understanding Compatibility with Other Drivetrain Components
The HB-6700 hub is compatible with:
- Spokes: Standard J-bend spokes are suitable.
- Rims: Compatible with rims designed for 100 mm OLD front hubs.
- Quick Release Skewers: Designed for standard 9 mm quick release skewers.
Always ensure compatibility when upgrading or replacing components to maintain optimal performance.
Conclusion
The Shimano HB-6700 hub is a reliable and high-performing component. Proper installation, regular maintenance, and correct adjustments are essential to maximize its lifespan and performance. By following the guidelines outlined above, cyclists can ensure a smooth and efficient riding experience.