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reverse spinning problem?(7 posts)

reverse spinning problem?zeke
Apr 21, 2002 9:01 PM
at times i spin my crank backwards when my bike is on the stand, or when i am adjusting the cranks to get onto the saddle at a red light.

at times when i do this the chain comes off the cogset.
is this normal? a problem?

i use an ultegra gruppo.

Not anything to worry aboutretro
Apr 21, 2002 10:48 PM
It happens because the derailleur isn't lined up perfectly with the cog the chain is on. If it shifts all right when you're riding, I wouldn't worry about it. Are you moving the shifter after the bike comes to a stop, or when you're coasting up to the light? If so, it may not be completing the shift--the cranks have to be turning for the chain to move over.
Not anything to worry aboutzeke
Apr 22, 2002 4:02 AM
thanks for the response. it does shift perfectly while i am riding.

i dont shift after i stop, but i may shift while i am coasting though try not to.
re: reverse spinning problem?ALBikeGuy
Apr 22, 2002 4:17 AM
As stated, might not be anything to worry about. But check the chain and cassette for wear. How old is the drive train?
re: reverse spinning problem?zeke
Apr 22, 2002 4:21 AM
actually its new (about 250 miles), thats why i was a bit concerned. its done it since i've bought it (over the winter).
Cogset or chain rings???Dave Hickey
Apr 22, 2002 6:36 AM
Chain coming off the cogset??? How can a chain come off the cogset. Is it shifting from one cog to another? Do you mean chain rings? Is your front derailleur adjusted properly? I had the same problem and it turned out to be my front derailluer was not parallel with the chain rings. When I pedalled backwards the derailleur would force the chain off the rings.
Cogset or chain rings???zeke
Apr 22, 2002 8:05 PM
i see i wasnt clear in my original message. the chain does not come off the entire cogset, but rather, as you mention, shifts from one cog to another as i pedal backwards.

i will check the front derailleur.

thanks for the info.