What is the difference between Nexus and Alfine 8?
The main difference between Nexus and Alfine groups is that Alfine is designed for disc brakes, and Nexus is designed for roller brakes. Disc brakes are better for riding in hilly terrain. Alfine 8 speed disc hub with centerlock disc attached. The disc doesn’t come with the hub, but are sold separately.
What are roller brakes?
A roller brake is a modular cable-operated drum brake manufactured by Shimano for use on specially splined front and rear hubs. Unlike a traditional drum brake, the Roller Brake can be easily removed from the hub. Drum brakes provide consistent braking in wet or dirty conditions since the mechanism is fully enclosed.
Are roller brakes good?
Roller brakes are good at working the same in all weathers, not needed much attention, not wearing the rim, looking neat, not really having any consumable parts to replace (new unit £38 if you need one (you probably won’t for your bikes lifetime) and just generally being good as slowing you down without fuss or bother.
What kind of hub does a Shimano Nexus use?
The ‘A’ versions are ‘two-roller’ internals, i.e. they use a pawl drive on the right-hand side (in 1-4) and the main (body center) roller clutch is preloaded by a drag spring that is set into the hub shell (as also found in most of the coaster brake versions as well as Nexus hubs with pawl drive e.g., SG-8R25, SG-8R27).
What is the spacing of the Nexus 8 speed hub?
The Nexus 8-speed hubs have a overlocknut spacing ranging of 132 to 135 mm, as sold: see Shimano’s overlocknut spacing chart. It is possible to reduce the spacing of the Nexus Rollerbrake/freewheeling models to as little as 126 mm by leaving off the Rollerbrake and using a narrower locknut.
Which is better nexus or Shimano 8 speed?
The Nexus and Alfine 8-speeds are more rugged than at least the older 7-speeds, but it have some well-known failure modes, and there are also well-known ways to prevent failure. Aaron Goss, of Aaron’s Bicycle Repair, reports: A “clunk” now and again on a Shimano 8 speed hub is normal.
What are the overlocknuts on a Nexus 8 speed?
Instead, shift down and spin. Probably the most common failure, though, is due to insufficient lubrication, leading to contamination by water and dirt. The Nexus 8-speed hubs have a overlocknut spacing ranging of 132 to 135 mm, as sold: see Shimano’s overlocknut spacing chart.