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Old 11-12-07, 08:41 PM   #1
titi2
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Need help with Deraillers please

when my chain is on the biggest gear in front and biggest gear or second biggest gear in back, my chain slipped out of the front gear each time I pedal back. Could someone please advise why does this happen? Thanks
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Old 11-13-07, 03:33 AM   #2
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You should avoid the largest chainring/largest (and even second largest) cog combo(s). This is especially true with a triple chainring crank. The chain is put at an unnecessarily excessive angle, likely resulting in the unintentional derailing.

You can get an equivalent--or close to equiv.--gear using the middle (or inner) chainring and a smaller/higher cog.

Before I knew better, I used to always keep my all-around mountain bike in the largest chainring, since the big/big combo was low enough to start up with. I've since learned to use the middle ring most of the time and the inner/smallest ring with the largest/lowest cogs and the outer/largest ring with the smallest/highest cogs.
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Old 11-13-07, 07:54 AM   #3
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Quote:
Originally Posted by titi2 View Post
when my chain is on the biggest gear in front and biggest gear or second biggest gear in back, my chain slipped out of the front gear each time I pedal back. Could someone please advise why does this happen? Thanks
http://www.parktool.com/repair/readhowto.asp?id=75
http://www.parktool.com/repair/readhowto.asp?id=64
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