chain length for SS with rear der.
Got tired of downtube shifters and shifting in general so I swapped out my cassette for a single cog and a bunch of spacers. I am also using my old rear derailleur so now I just needed to know how to decide on proper chain length.
Should I have it as tight as possible as I can while everything still works fine (with the derailleur cage rotated/pulled as far to the right as possible -looking at the bike on the right/drive side-) or should I leave a fair amount of slack in it like with a geared setup?
Thanks.