Bülk Models Velomobiles

In this section we will add videos that can help you fixing various malfunctions for “Rear wheel” zone, maintenance videos or other kind of info that can make your velomobile experience great.

Rear Wheel Maintenance Guide

Regular maintenance of the rear wheel ensures optimal performance and longevity. The maintenance process includes wheel removal, bearing inspection, and proper reassembly techniques.

Wheel Removal Process

The rear wheel removal process requires specific steps for safe disassembly. First, position the chain on the smallest rear gear to minimize tension. Remove the chain from the front chainwheel to eliminate tension completely. Using the specialized tool (available on the website and provided to ambassadors) with a 19mm wrench, turn the rear axle bolt clockwise for removal. This unconventional direction is intentional, and the bolt includes Loctite for security.

Bearing Maintenance

Bearing replacement should be considered carefully as it is rarely necessary under normal conditions. Bearings typically last 50,000 kilometers or approximately five years under normal use. However, extreme conditions such as constant exposure to moisture or improper storage can accelerate wear through rust formation. Regular maintenance includes cleaning and applying Teflon spray to extend bearing life.

Bearing Replacement Procedure

When bearing replacement is necessary, ensure proper alignment during installation. Clean all surfaces thoroughly, particularly the aluminum housing. For worn housings, apply minimal green Loctite 638 to the outer surface, being careful to prevent contamination of the bearing itself. Installation should be performed gradually and evenly, checking for proper alignment throughout the process.

Special Considerations

For bikes equipped with larger cassettes (11-52), additional steps are required for wheel removal. This includes removing the rear suspension and derailleur to create adequate clearance. Pay attention to the proper orientation of bushings during reassembly, noting the size difference between sides.

Exploded view drawings can show you the relationship between different components and how they fit together. It helps understand the order of assembly of the different parts. Below you can see different exploded views for “Rear wheel” zone.

Maintenance specifications

Required Tools:

• 19mm wrench
• Specialized rear axle tool
• Bearing installation tools
• Teflon spray
• Green Loctite 638 (for bearing housing repair)
• Basic hand tools for derailleur removal

You can order velomobile parts from dealers. Search your local or nearest dealer HERE.

Technical specifications and maintenance procedures are subject to updates. Always refer to the latest documentation for current information.
Need assistance? Contact us at sales@velomobileworld.com