P
Paul
Guest
I recently had the chain on my bike changed at my LBS and immediately noticed much smoother shifting
and a all-round general drive chain improvement.
I've ridden a few hundred miles on it since the change over without problems.
Today, whilst cleaning and lubing the chain, I moved through all the gears just to check general
shifting and found that when I shifted onto the largest sprocket whilst on the largest chainring the
derailleur seems overstretch and the chain is extremly taught with no give at all. The pedals will
rotate but the whole thing grinds terribly. It seems as if the chain is a link or two too short.
Since largest sprocket, largest chainring is not a gear combination that is ever used is this
something I need worry about, all other gear combos are fine and, as I have mentioned, the whole
drivetrain seems to function much better with this chain.
I'm pretty inexperienced and new to cycling (as you might guess from the fact that I got the LBS to
change the chain!) so I'm not sure whether I need to do anything. The mechanic at the shop is very
experienced so I doubt whether it's a mistake.
I have an 8 speed drivechain with 28,38,48 chainrings and a cheap 11-34 tooth Shimano Megarange
cassette, the new chain is a SRAM PC58.
Thanks in advance for any thoughts,
Paul.
and a all-round general drive chain improvement.
I've ridden a few hundred miles on it since the change over without problems.
Today, whilst cleaning and lubing the chain, I moved through all the gears just to check general
shifting and found that when I shifted onto the largest sprocket whilst on the largest chainring the
derailleur seems overstretch and the chain is extremly taught with no give at all. The pedals will
rotate but the whole thing grinds terribly. It seems as if the chain is a link or two too short.
Since largest sprocket, largest chainring is not a gear combination that is ever used is this
something I need worry about, all other gear combos are fine and, as I have mentioned, the whole
drivetrain seems to function much better with this chain.
I'm pretty inexperienced and new to cycling (as you might guess from the fact that I got the LBS to
change the chain!) so I'm not sure whether I need to do anything. The mechanic at the shop is very
experienced so I doubt whether it's a mistake.
I have an 8 speed drivechain with 28,38,48 chainrings and a cheap 11-34 tooth Shimano Megarange
cassette, the new chain is a SRAM PC58.
Thanks in advance for any thoughts,
Paul.