Join Date: Apr 2002
Location: Montréal (Québec)
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If I understood correctly, you also shortened the chain.
While at home, you should check whether or not your chain is long enough. Do the following.
1. Use one of the middle cogs (rear gears).
2. Move the chain to the largest chainring.
3. Move the chain towards the larger cogs, one gear at a time, and check that there still is some slack in the chain. Be especially careful when you are in the second gear and try to assess that you have enough slack left to move onto the first gear (largest cog).
4. If OK, shift slowly to the first gear, but be prepared to shift down ASAP if anything seems to pull.
Normally, when you are on large-large, there should be approximately 1 link of play available to the derailleur. If things are too tight, the chain will try to pull out the derailleur, and one of these things will occur:
- derailleur pulleys will break
- derailleur will break
- derailleur or derailleur hanger will bend.
In either case, it's likely to fly into the spokes, stopping you dead right there. And repair is probably expensive.