began his bicycle and components manufacturing in 1950.
located in the Seebach Jungholzstrasse 43rd,
and his retail outlet was one Örlikon
Baumackerstrasse next to the police station. It appears
they ceased production in 1971.
Caironi called his bikes 'SKS Caironi Cycles'.
He also produced wheels and brakes under the brand
'Duralca' which meant "products of hard
He was also a successful bicycle racer, being a
contemporary of Paul Egli, Hans Martin and others of the
amateur road world championships in Paris. Jacob
participated in the 1928 Olympic Games in Amsterdam and
was 9th in road race. In 193os he sponsored a
professional team under the name 'Caironi ' and under
the 'Duralca' name in the late 1940s-mid '50s. Hugo
Koblet was on a Duralca team in 1948, and Reg Harris was
on the Raleigh-Duralca team 1953-55
The wide-profile Duralca rims were popular with 6-day
riders. And Caironi's company also manufactured brake
calipers and brake pads.
Special thanks to Peter Adler Background info