Interesting that they chose 14 mm like the Japanese rather 15 mm like Campy. Can't remember if old TA was 14 or 15. Another set of changes I find interesting was a couple of years later, when Stronglight changed to 144 BCD chainrings about the time Campy went to 135 BCD with C-Record. And about the same time Nervar switched to the 122 BCD rings that Stronglight was making obsolete by switching to 144 BCD that Campy was making obsolete by switching to 135 BCD.
Regards,
Jerry Moos Big Spring, TX
John Thompson <JohnThompson@new.rr.com> wrote:
Jerome & Elizabeth Moos wrote:
> As we know, Stronglight switched from their old 23.35 mm extractor
> thread to the Campy 22.0 mm about 1983. But did they switch to 15 mm
> crank bolts at the same time, or did they stay with their old 16 mm
> bolts for a while? As anyone who has ever had to remove a Zeus crank
> knows, a 16 mm bolt is a very tight fit in a 22.0 mm crank, requiring
> a thin-walled wrench, but Zeus used this combination for decades, so
> maybe Stronglight did the same for a while after 1983. BTW does
> Stronglight or Campy, or anyone else still use 15 mm on modern
> cranks, or does everyone use 14 mm now?
When Stronglight switched to the 22mm extractor thread, they also switched to 14mm bolts.
--
John (john@os2.dhs.org)
Appleton WI USA