Nexus 7-Speed Vs. Nexus 8-Speed

The old-fashioned enclosed gearing hub is regaining its popularity among commuting cyclists. These hubs reduce the chance of the rider getting covered in grease and allow for the selection of gearing appropriate for a daily commute. Shimano makes a series of hubs marketed under the names Nexus 7 and Nexus 8. The differences between the Nexus 7-speed and the Nexus 8-speed may be minor, but for commuters, they add up to important considerations for comfort and efficiency.

  1. Use

    • Having one more available gear in the Nexus 8-speed versus the Nexus 7-speed can make a difference for the commuting cyclist. The additional low gear in the Nexus 8 allows for more efficient pedaling on hills as the cyclist can maintain a high rate of wheel revolution to maintain speed without physical strain. If the daily commute is along a flat route, there is no need for the extra gear.

    Compatibility

    • The Nexus 7 is more compatible with different biking systems because it is smaller and more self-contained than the Nexus 8. The Nexus 8 may need new braking cables and gear shift cables, as they are not integrated with the enclosed hub, as with the Nexus 7. The Nexus 8 may also require a different wheel rim, as it is slightly wider and heavier than what most common rims may support.

    Braking

    • The Nexus 7 uses an all-weather braking system that is built into the hub, unlike the Nexus 8. With the Nexus 8, external brakes are used, which means that the brakes will become wet and slick in wet weather or become clogged with road grime, reducing the brakes' effectiveness. For commuters, the ability to stop quickly and reliably is a primary concern, and maintaining clean brakes can be a daily chore with external systems.

    Weight

    • The Nexus 8 weighs more than the Nexus 7 because of the additional internal gearing. While weight concerns may not bother commuters who travel less than 14 miles each way, long-distance riders who commute 15 or more miles each way may not want to add to the drag on the cycle, as it will increase the power needed to pedal it consistently.