Update:
After discussing the brake bosses over at
Bicycle Mechanics,
This affirms that despite being made for 700C wheels my Camus-built frame was indeed a juvenile model. As
Andy mentioned over there, Jacky was kind of a "kids' version" of the Criterium that I was going to replace them with, once I figure out the "post issue".
Speaking of which, the alternatives are
1. replace/respace/reposition the bosses according to whatever brake/wheel combo I'd end up with and repaint the seatstays
2. Fit the existing bosses with M6 canti studs made for RockShox/Magura etc. suspension forks (this will most likely be my initial, at least temporary solution)
3. Cut off the welds on the M6 nuts integrated in the Jacky bosses and replace them with M8 nuts (that might fit). This would allow the use of standard canti studs/posts.
4. Scavenge a set of canti studs, cut off the male threaded part, screw in M6 bolts like removable BMX brake posts
5. Speaking of BMX, these or something similar might be used to replace the thread-in Jacky posts, if the critical dimensions happened to match
https://www.flybikes.com/storage/pro...10c1639759.jpg
This NOS Solida 150mm 116BCD 3-arm crankset from French boutique Cycling-Vintage would be a good fit, but it's priced for its rarity, not its quality (or the lack of, in this case)
There was also a comparable product from Ofmega on eBay, but despite how much I enjoy the look of 3-arm cranks, affordable replacement rings for 116BCD are becoming increasing scarce, so I'll probably settle with a clear anodized taiwanese 5-arm set.
With much of the "good stuff" in my stash on the Rossin, I think I'll dissassemble the Mercier mixte to build up this frame and probably put the Mercier frameset for sale. I always felt kind of unstable on it. Regardless of saddle height it's probably just a tad too big (and flexy).