Originally Posted by
Wileyone
It would also be nice to learn the types of Lugs these two companies produced (if any). or whether the Lugs were outsourced by the end builder.
Ishiwata made some bulge-formed and investment cast fork crowns, but I'm not aware of any Ishiwata lugs. At Trek, we used Nikko lugs on the early frames.
Tange made investment cast lugs and fork crowns (we used some of these on the mid-80s high-end steel frames), as well as stamped lugs. We used the short-point Champion stamped lugs on the first "170" model frames.