First off, I apologize in advance for any incorrect terminology. I'm still learning.
1997 Trek 820 Mountain Track. Specs
HERE
New to me for a few weeks now.
Third front gear (outer chainring) has 2 broken teeth, next to each other. They appear to be well worn, indicating that they have been broken for a while. There appear to be more worn teeth on the 2nd gear also.
When standing on the petals in 3rd gear, the chain would occasionally skip.
The rear cassette has a few shiny spots, but I don't know enough about the geometry of the teeth to know if they are supposed to be like that or not.
The chain is not worn out, per the 12" measurement test.
I am tight on money, and I can turn a wrench pretty well, so my questions are:
1. What all needs to be replaced? Cassette, chain, chainrings, complete crankset, etc.???
2. What special tools do I need?
Chain whip and correct size tool to remove the cassette. A chain break. A 5mm allen wrench to remove the chain rings.
3. Where and how much are the parts?
Your LBS can get the parts for you.
4. Should I find a good LBS to do it for me, and how much am I looking at there? (the Bicycles, Inc. by the house charged me $15 to tighten a loose hub, which I later found out was very expensive.)
Find another LBS and get an estimate BEFORE you give them the bike to repair.
Thanks in advance,
FIN