Originally Posted by
70sSanO
As far as shifting, you don't do anything but set the limit screw to block out the outside (large) chainring. There is no tricking 1 becomes 2, or 2 becomes 1.. 1 is 1 and 2 is 2 and there is no 3. Apart from adjusting the front derailleur for the new setup, there is little you need to do.
John
Perhaps you should re-read my response and you would know why I suggested that method; blocking out the high shifter position with the limit stop leaves one open to jamming or damaging the shifter mechanism as a result of attempting to shift against the stop. I have had this jamming happen to me so it is a real issue. Shifting into the non-functional low position will do no harm, and will only result in a slack wire which is easily recovered by merely shifting up again.