|Help solve my sluggish shifting problem||rtyszko|
Aug 11, 2002 3:54 PM
|I just replaced my chain and now I've noticed that between some of my middle and upper gears (going up and down the cassette) that I have a very sluggish response. What do I need to do to solve this problem? It's not a limit screw problem (I don't think) because I can shift fairly easily to the big cog and the little cog. Help if you can...
Aug 11, 2002 5:52 PM
|1) Your cassette cogs may be worn, and the new chain may not be meshing well with them. 2) You may just need a slight turn of the barrel adjuster on your rear derailleur. Number two is obviously the preferred problem - test it by turning it counterclockwise (1/4 turn at a time) if things are slow going to the next bigger cog, or turning it clockwise if it is slow going to the next smaller cog. An outside shot at a third or fourth possibility is that 3) the chain is a Shimano and came with that nasty shipping wax on it, which may impede shifting or 4) you have bought a chain that is not compatible with your drive train (HIGHLY unlikely).|
|I'd try fresh cables and housings.||Spoke Wrench|
Aug 11, 2002 6:45 PM
|If it was working to your satisfaction just prior to replacing the chain, however, I'd have to think that the problem is related to that. Sometimes a new chain needs a new cassette in order to work properly.|
Aug 11, 2002 8:32 PM
|Since the problems started with a new chain I would start there. What model number cassette (how many rear speeds?), rear derailleur, and chain do you have on the bike? Shimano is very specific about matching the right chain to the right group. The model number of the chain should be on the box and stamped on each outer link of the chain.
Do the cassette and old chain have extremely high mileage, or did you skip regular chain lubing? If so, the old chain may have worn out the sprockets. The middle ones will be the most worn.
Is the new chain the same length (number of links) as the old chain? The length of the chain must be correct for best shifting. Is there a tight link in the new chain, perhaps where it was joined?
|I tried to adjust the rear derailleur barrel, what next?||rtyszko|
Aug 12, 2002 5:28 PM
|I still have trouble both shifting up and down. The cassette is an old one off of my mtn. bike which I'm sure could use an upgrade. Any thoughts????
Aug 13, 2002 5:05 PM
|"an old one off my MTB" is the wrong cassette. Get a new one.|| |