Originally Posted by
RH Clark
When I set "H" and "L" limits on my derailleurs, I remove the chain and the cable, and simply move the derailleur by hand and adjust the screws until I have the derailleur pulleys aligned with the H and L cassette gears. I've never seen anyone else adjust a derailleur H and L screws without the chain or cable attached. Is there any reason my method won't work with any derailleur?
A reasonable approach when initially setting the H and L limits on a newly installed derailleur. That’s what I do. Obviously setting up the indexing will require chain and cable installed. Once the indexing is dialed in, I’ll readjust the H and L limits to align them with the high and low sprockets