Originally Posted by
goldfinch
I read just enough about the Helicomatic hub to know that it is problematic and that parts are hard to come by. The wheel does not spin nice and freely. Clearly the hub needs servicing. Is this something I can do myself? I assume the cassette needs a special tool to remove it. Can I lube the bearings from one side and skip removing the cassette?
The problem with the Helicomatic hub is that it uses smaller than standard bearings, which require more frequent than standard service. You can service the bearings without removing the cogs. If the cones are not pitted or otherwise damaged, simply replace the balls with new 5/32" balls and clean grease. If they are damaged, you will need to source usable replacements (i.e. eBay) or replace the entire wheel and cluster. If you are careful, you can remove the cluster lockring with a Channelock pliers instead of the official tool, if this becomes necessary.