EB
08-27-2020, 10:58 AM
This is probably on its way to the shop, but I wanted to check in here to see if anyone has encountered something like this with a Shimano hub before. I have a brand new Shimano XT M8130-B "SuperBoost" rear hub on the Evil. Like all Shimano hubs, it's a cup-and-cone bearing system.
Coasting, the hub is fine. When pedaling, it frequently emits a "grinding" sound as it turns. Also, it feels slightly draggy compared to the 148 hub I had on the old build,. though so many things have changed with this bike including the tires that it's hard to pin down whether that's the hub or something else.
It's extremely annoying after awhile, and definitely audible to riders near me. Very surprising to have this behavior with a brand new hub. The other data point is that I have washed this bike a few times with a gentle hose spray since the build was finished, but prior XTR cup-and-cone hubs I've had have had no issue with being washed from time to time.
Coasting, the hub is fine. When pedaling, it frequently emits a "grinding" sound as it turns. Also, it feels slightly draggy compared to the 148 hub I had on the old build,. though so many things have changed with this bike including the tires that it's hard to pin down whether that's the hub or something else.
It's extremely annoying after awhile, and definitely audible to riders near me. Very surprising to have this behavior with a brand new hub. The other data point is that I have washed this bike a few times with a gentle hose spray since the build was finished, but prior XTR cup-and-cone hubs I've had have had no issue with being washed from time to time.