The Lotus look-alike frame found by Robert Clair, but badged up and engrave d as an "SMG", is in fact of French origin. SMG was the brand name of the frames made by Jean Frelat, a constructeur, b ased at Pavillons-sous-Bois, just to the east of Paris. He was very well kn own in the late 70s and early 80s, a time when he built quite a lot of fram es for leading French amateur riders, on both road and track, who were from that general region of France. He also sponsored several French lady champ ions such as Isabelle Nicoloso and Valerie Simonet, both of them track ride rs. Valerie was the French sprint champion in 1981. Jean was quite an innovative builder, being well known for bronze-welded lu gless frames and internal routing of all cables. The frame that Robert has come across sounds as though it is the top-of-the -range SMG, called the SASEBO model. As such all the oval tubes - probabl y with rounded ends for easy use with lugs - oval stays and possibly fork b lades - would be from the AMR - Camus Aero 7 tube set. If the tubes are r egular aero section ie without tubular ends, then they will be Columbus Aer o ones. The frame will probably not have a rear chainstay bridge, to enable the rear wheel to be brought close to the seat tube. It's a long time since I saw this Frelat model but I think that the drop-ou ts were one of Frelat's patents, designed to enable the frame to have longe r and shorter wheelbases, depending on use. The CAMUS-tubed version was int ended for use in pursuit racing and the Columbus-tubed one for sprinting an d vitesse. As I recall he also had front fork drop-outs that gave a choice of two positions.
SMGs are quite rare frames. ..and worth buying in.
Hope that helps..
Norris Lockley, Settle Uk Just what the origin of the SMG is, I never did find out