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Chain range over sprockets(4 posts)

Chain range over sprocketsBrit
Mar 13, 2002 5:16 PM
I'm moving back into road cycling from mtb'ing and have a question.

How much my chain will accomodate my 10sp rear sprocket from my double chainrings? i.e. can I select any sprocket from the small chainring?

On my mtb I would limit the range of the chain on the rear sprocket from each chainring, so that the chain wasn't unduely bent creating it to stretch. So the lower chainring would cover the first 3 or 4 sprockets, the middle chainring 4 sprockets in the middle of the block and so on.

Kind of a daft question, but I was just wondering what the consensus is...

Standard advice is...cory
Mar 13, 2002 5:27 PM
...don't go all the way across the driveline, from the small ring to the small cog or big ring to big cog. As a rule, I try to stay toward the middle of the driveline's capacity by anticipating shifts, but I've never had any problems going to the NEXT biggest or smallest cog.
re: Chain range over sprocketsChen2
Mar 14, 2002 7:16 AM
I agree with Cory and also find that if everything is adjusted well I can reach all but one cog with no chain drag on the front derailleur.
There's really two questions here.Spoke Wrench
Mar 14, 2002 9:58 AM
The first is which gear combinations should you use or avoid? I think that that's been adequately andwered.

The second is how long should your chain be? I think it should be long enough to cover the big/big gear combination. If it's too short and you inadvertantly try to shift into that combination, you can twist your rear derailleur cage into the spokes.