Originally Posted by
woodcraft
My cassette is 11-28 (Sram RD, 34/48 rings). If I put on an 11-30 (done regularly w/ Shimano, I believe)
and used your method, I think it would fail.
But it is easy to know how to avoid the problem. Just add a full 1" link for two teeth more than the specified 28 tooth limit that the method works for, the difference between 28 and 30. Done and done.