newbie question re shifting

"Richard Stanz" <[email hidden]> wrote in message
"]news:[email hidden]...

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I'm in my first season and have a question for the group

about

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shifting. I have Shimano Sora components on my Trek road

bike. When

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I shift from the small ring to the middle ring it

sometimes takes a

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while for the chain to move and, when it does, it doesn't

seem to sit

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right. The bike moves just fine, but there's a rattling

noise. I

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usually shift again to the big ring, where the chain sits

fine, and

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when I shift back down from the big ring to the middle

ring, I again

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have no problem or rattling. Its only the move from the

small ring to

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the middle ring that causes problems. Is this normal, is

it me or is

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there some adjustment I should be making?

Many thanks, Richard Stanz

Sounds like the chain may be rubbing on the FDR cage. Put it on a stand and see if you can identify
what's rubbing - try several rear sprockets too. Could be a sticking cable.

Some late model triple shifters have a trim position between granny and middle, so with those you
need to make sure you shift 'though' the trim position to avoid FDR rubbing with the smaller
sprockets - but I don't believe Sora has trim?