YABD - vintage Bernard Carré frame, etc

[Jesper]

(06-12-2024, 05:56 PM)enkei Wrote:  I got bored of the variability in measurement using vernier calipers, so I've ordered a nice classic external micrometer. Wanted some telescopic bore gauges too but even I couldn't justify the cost of a set of Mitutoyos, LOL.

I use an antique set of "reverse" calipers for internal bore and then use a micrometer to measure the distance across the tips. Low cost and still effective since they can go about 3" into the tube. Of course, since I rarely use them they got misplaced.

[enkei]

(06-12-2024, 07:13 PM)Jesper Wrote:  Of course, since I rarely use them they got misplaced.

I properly LOLed at that.

Thanks for reminding me that I already have a few sizes of internal calipers (DOH). Methinks it's time to go through some boxes and organise my tools properly.

[Jesper]

Final consensus on the frame is that it is a pre-'80s frame; full metric tubeset. Seat post should be 26.6mm, but due to manufacturing it might only fit a 26.4mm post which, as others noted, Carré frames were often outfitted with 26.4mm posts. Of course, the post size call is yours to make, and you will be able to best determine its size, but I would ensure the binder slot looks like it is a consistent width from bottom top without showing any signs of closure towards the top.

Another possible year identifying feature is the design of the tubing decal which may have been modified in the '70s. I am not familiar with that Vitus tubing to know when or if the tubing decals were changed.

Edit: link to a very similar Carré frame. Main difference is the crown style (flatter and external lug) and no panto. I suspect fork difference made for lower cost level as the bike was badged for a different brand: "Guillier"; although it does have chrome "socks".
https://redirect.viglink.com/?format=go&jsonp=vglnk_171846377544912&key=2868964305e224e224bff6c81ebe83c5&libId=lxg8964p01000er2000UL7r7wj136&loc=https%3A%2F%2Fwww.bikeforums.net%2Fclassic-vintage-sales%2F1265818-bernard-carre-frameset-super-vitus-971-59cm.html&ccpaConsent=1YNY&v=1&opt=true&out=https%3A%2F%2Fwww.flickr.com%2Fgp%2F194633627%40N02%2F5391fz69WB&ref=https%3A%2F%2Fwww.bikeforums.net%2Fsearch.php%3Fsearchid%3D17760705%26pp​%3D50%26page%3D3&title=Bernard%20Carr%C3%A9%20Frameset%20%2F%20Super%20Vitus%20971%20%2F%2059​cm%20-%20Bike%20Forums&txt=https%3A%2F%2Fwww.flickr.com%2Fgp%2F194633627%40N02%2F5391fz69WB