Doing a spring time service on my rear wheel yesterday and noticed this damage on the cassette body when I removed it from the Hub shell. Clearly the drive ring made contact with it but I don't understand how. All necessary spacers are in place, bearings are tight and smooth.
Been running this wheel for several years with atleast yearly maintenance. This definitely wasn't on the cassette body last year.
Any mechanics have any theories about this? I'm gonna keep running it for now as a replacement cassette body is about $100 and I'm not even positive how easy it will be to find another one for the Pro4.
Also it's completely around the entire circumference of the cassette body.
by Repulsive_Site_270
1 Comment
This is like the second or third this week. Look up my posts about this. This is a problem since the ProII days and why I won’t get Hope hubs.
There is no magical theory to it: under high torque and shock loads the material around the pawls deforms in two different directions, one out due to the pawls’ tendency to move outward and then a circular deformation at the same time and this pushes the material into the ratchet ring. It will continue to work, but those pawl pockets will get a bit sloppy which usuallly isn’t an issue, but in my experience you’ll start seeing uneven wear on the pawls as the deformation becomes permanent and the pawls are no longer perpendicular to the plane of the ratchet ring teeth.
There are others in the last thread that obviously don’t have any Hope hubs and started blaming it on worn bearings and so on, but this will happen on new hubs if you put enough bio-torque into them.
My suggestion is the same as the ProII days: if you want to keep running Hope hubs, a steel cassette body is mandatory if you generate tons of torque; provided they are available.