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It has to be somewhere you put your hands to lift the bike. Check out the wheel rims. They can collect all sorts of grime when you ride in the wet. Some of it will be ground rubber from your brakes, but most is road dirt. Motor vehicles drop oil and grease, and lots of rubber on the road. If you find that is the cause, the solution is to clean them after ...


What you know right now is that there's quite a lot of it and it's quite greasy. Which is useful, but not especially useful. One thing that occurs to me is to question whether someone else might have oiled the belt for you? Has it been in a shop, or do you have someone else in your house who maintains a bike? Is there a source of fumes where you store your ...


From an engineers point of view, if any of the balls were deformed or fractured, I would suggest that the cups and cones would be shot also. If they have just one visible line, crater or flat on the bearing contact surface, then new balls will not last very long in any case. When in doubt, use white lithium grease preferred or Castrol boat trailer grease.

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