Still puzzling why they would choose 23.35 mm. Why not 23.0 like TA? Zeus used 16 mm bolts with a 22.0 extractor, so Stronglight could easily have used 16 mm with 23.0. One almost thinks 23.35 must have been the translation of an English dimension, like some Italian threads, but 23.35 doesn't equal any even eighth, sixteenth or even thirty-second inch.
BTW, I wonder how many people replace Stronglight 16 mm bolts with 15 or 14 mm for convenience. Personally, I consider it a point of honor to keep the original 16 mm bolts. In fact, I even insist on keeping 16 mm Zeus bolts with the 22.0 mm extractor thread, which really is a tight fit. But then, I have a Zeus 16 mm peanut butter wrench. Once you have the proper tool, it really isn't an issue.
Regards,
Jerry Moos
Big Spring, Texas, USA
> From: John Thompson <johndthompson@gmail.com>
\r?\n> Subject: Re: [CR] PX-10 help
\r?\n> To:
\r?\n> Cc: Classicrendezvous@bikelist.org
\r?\n> Date: Saturday, September 5, 2009, 10:11 AM
\r?\n> On 09/04/2009 01:19 PM, verktyg
\r?\n> wrote:
\r?\n>
\r?\n> > Why would anyone design a system such as this? Why did
\r?\n> they use 23.35mm
\r?\n> > extractor threads!
\r?\n> >
\r?\n> > "We are French. We come from France" Beldar Conehead
\r?\n>
\r?\n> IIRC, Stronglight invented the square taper cotterless
\r?\n> crank. I suspect
\r?\n> they arbitrarily chose a 16mm bolt to hold it in place,
\r?\n> then designed
\r?\n> the extractor threading around that constraint.
\r?\n>
\r?\n> --
\r?\n>
\r?\n> -John Thompson (john@os2.dhs.org)
\r?\n> Appleton WI USA