Bike Chain Issue
Hi everyone
Before I get started, I’m very new to bikes and repairing them, so if my terminology is slightly off or my descriptions make no sense, I apologize and please let me know.
I’ve also attached photos so everything below makes sense.
I decided today that I was going to put on a new chain on my 1989 Miyata 112.
I have done very little bike repair, and I haven’t done any thing myself without the help of a family friend who used to race bikes in the 1980s.
I wanted to do the chain myself, but ran into a bit of an issue afterwards.
I followed the Park Tool videos online, resized the chain without an original to match it to and ran into these issues:
- The chain, when on the larger chain ring and on the highest cog in the back, does not fully engage with the rear derailleur.
- When the chain is on the lowest chain ring, and on the lowest cog, has an insane amount of slack.
- I also accidentally broke off the little plastic guard thing on the back derailleur. I put to much tension on the chain and it snapped it off.
I would really like to finish this project myself if possible. It’s nothing against a bike shop, I just want to do it myself if I can.
Any help would be greatly appreciated!!