I have a 1985 Schwin Sierra. Nice early Mtn Bike. All original condition (chain and drive train never replaced,
When going up a grade , I noticed the chain slipping at the rear sprocket the middle and second to largest of the 5 rear cogs. This was on pavement and I wasnt really grinding. On the other hand, I am a Clyde at 220 or so.
- I understand this is typically a sign of a worn chain. Correct? Are there any other possible problems with these symptoms?
- Is it likely I need a new rear freewheel as well?
Finally, is it likely that also need to replace the front chain rings? Doesnt slip there.
I ask because a new chain and freewheel seem pretty easy and low cost, but looks like new front chainrings might be more costly.