Originally Posted by
T-Mar
Given the era, it almost certainly a repaired shell but I wouldn't necessarily rule out Italian threading for Brazilian bicycles. After all, Italian threading was the standard in Mexico during the pre-ISO era. I've also seen vintage bicycles from Argentina and Chile with Italian threading. It all seems to come down to the native country of the immigrants or companies who developed the bicycle industry in the particular country. If they were from Italy, the traditional threading standard could be Italian. It would be interesting to know the threading standard on a pre-ISO era, Brazilian manufactured bicycle, such as a Caloi. Neither French nor Italian would surprise me.
Yes T-Mar, you are right ! Here in Brazil, bicycles like Monark, Phillips, Goricke, Peugeot and Caloi were major players on the bicycle industry. Caloi was a huge brand during the 70´s, 80´s and 90´s (I´ve had several road and MTB models, as a kid and teenager). Monark and Peugeot were good brands with a loyal following, there are a lot of classic bikes still around.
Old Caloi framesets have 34,7mm bottom brackets, with hellish cotter pins cranksets (one-piece cranks were common too) and italian threading. Some Caloi framesets (so called "Professionals") were actually made in Italy, with Gipiemme and Campagnolo pieces. Only professional cycling teams got them, they are really nice and very well made.
Regards,
Rod