Jerry
Regina certainly was "de rigeur" but, as I recall, by the mid to
latter 1970's we were all using Sedis Sport chains. You raced on them
for a bit and, because they were so cheap, just threw them out rather
than bothering to clean them. Of course you could only do this so many
times before your freewheel and new chain no longer mated well and
started jumping on your favorite cog. I also remember one problem I
always had with SedisSport chains. Because of the narrow links they
never quite fit well into the chain tools I would use. Had to force the
links into the tool slot.
Edward Albert
Chappaqua, NY