I rode to work today in snow and towards the end of the ride, the chain started skipping and I could not shift. I noticed ice and snow had built up on the chainrings and cogs. Any thoughts on how to remedy (other than SS or IGH)? I think the shifting issue could be remedied by lubricating the rear derailer.
This is a beater garage sale bike, so it could be the components are just worn out, but it hasn't skipped otherwise.