I don't see what the problem is, these hubs are as simple as can be. Of course I chunked the band brake, its a piece of crap. But if you replace the cheap chinese bearings with ceramic ones, and then order a custom sprocket from Blow By U(optional, the sprockets that come with it are decent), then these hubs are good to go for 200+ miles a day. For $50 that's not bad. I still wish Grubee would consider reversing the outrer left hand threads, that way a disc brake adapter could be used, the band brake just sucks ass. You can use the lock ring on the sprocket and just toss the entire brake out, worked for me. If you look at the cost of buying all the parts separate, you'd never get close to what they are offering in the package. If you aren't mechanically inclined, better to just buy the whole wheel assembled from bicycleengines.com or Spookytooth.