I need some expert opinions on this issue. I was riding this morning with a couple friends. We were just warming up and had gone 6.38 miles to be exact, when my rear deralleur broke off. I was spinning at about 16/17 miles per hour when it happened. I didn't crash either just before the derailer came off and thankfully I didn't go down after it came off. We were just going along fine, with no warning that anything was wrong or about to happen. The derailer is mangled and a survey of the damages shows that the place where the derailer was attached is bent and the threads are stripped. The derailer is still attached to the chain.
I have a Trek Madone 5.2 (the original Madone Model, purchases in 2005) and I had a new Shimano Dura-Ace 10 (double) groupo, including shifters and a compact crank put on the bike at the end of June (2007). Since that time I spent two weeks in Colorado, riding in the mountains and completed the MS 150 from Denver to Ft. Collins, and I also rode RAGRBRAI in Iowas in July. Therefore I have approximately 2000miles on the new equipment. It has been working very well, although over the past few weeks I've noticed that I was needing to shift twice at times to get it to shift. I assumed that this was just streching of the wires and had been planning to take it in for a tune up. This being said, nothing major, just not shifting as sharp as it did when first purchased.
Here athe questions that I need help with:
1.) Does the Shimano equipment have a warranty and will this equipment be under that warranty?
2.) Should the lbs that put the new equipment on the bike be able to replace the derailer and put it on the bike at no cost to me?
3.) Given the fact that the piece where the derailer attaches to the bike is bent and the threads have been stripped, can this piece be replaced or is the frame shot?
Any assistance in this area would be greatly appreciated!!!