You are reading a single comment by @gbj_tester and its replies.
Click here to read the full conversation.
-
The mounting bolts, swivel design and spring mount was a faint copy of the Shimano layout of the late seventies
How confident are we that this is the right conclusion? It seems to me that it's likely that both Shimano and Sachs were independently inspired by the improved Lucien Juy design then being offered by Simplex, e.g. SLJ6000 from 1975
1 Attachment
-
gbj_tester
-
To be honest nothing has changed since Lucien Juy / Simplex design, nowadays derailleurs are still a collapsible parallelogram. The lonely other improvement was indexing.
From Simplex 1975 catalogue:
https://www.velo-pages.com/main.php?g2_itemId=20151&g2_page=2
Julien1A
https://lecycleur.com/parts/history-of-sachs-new-success/