Originally Posted by ADE
Well, sometime (most of the time) at the bottom of the railer will snag onto a spoke and the spoke will pull the bottom of the railer and break it right off. This only happens then the rear railer gets hit and is bent a little. Thats why I asked about the bash guard because I see them on other bikes right above the gear railer on the back. its like a U shape. And I thought the wheel may be pro stuff since the guy said its stronger than Titanium and lighter than aluminum (close to that-the titanium part I know is what he said).
Here is what you need to do:
1) Check your derailleur hanger. If it appears bent, I would suggest taking it to a shop to straighten it.
2) But a "dork disc" or "pie plate". It's the plastic "ring" that goes between your rear wheel's spokes and your largest cog. They'll be like $7 at your local bike shop (lbs)
3) When you install your deraiileur make sure you low limit screw is set correctly. If you are perplexed by this, take it to you lbs.