Originally Posted by
christo930
The problem is that I know all these wheels are not the same, I don't want to buy a rim with the wrong parts for attaching the cassette that I have which fits on my existing rim. All of the freewheel and ratchet stuff is in the rim and it is keyed to accept a particular type of cassette, but I have no idea if those cassettes conform to a or multiple standards
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You are still after all the posts in this thread using the term "rim" instead of asking about a new wheel. A rim is not a wheel. The freewheel and ratchet stuff are in the HUB, not the rim. A newer wheel will accept your older 7 speed cassette with the simple addition of a spacer