Originally Posted by
deadforkinglast
Does anyone know anything about Cyclone frames?
gbarchus' post is correct. It's interesting, over the years (like '78/'79) you can see the transition from CYCLONE to 3RENSHO CYCLONE. This frame is a '78 built by Yamaguchi. It features
Ishiwata 019 tubing, chromed Shimano ends, Tange lugs, Cinelli fastback seat stays
and fork crown, and a Nikko bottom bracket.