Schwinn paramount dating
There are necked-down parts that fit into the top tube and down tube, like internal lugs. Muller has a very detailed explanation of this process, in his superb article: , also on this site. The Typhoon probably dates from the late '50's or '60's.
If I recall, it was what Schwinn called a "cantilever" frame, where the seat stays pass by the seat cluster and continue on in a graceful curve to join the bottom of the head tube.
The Chicago Schwinns were among the most bomb-resistant bikes ever built, and they were built with unique technology .
With the exception of the Sports Tourer, Super Sport, and Superior, they are welded, not brazed.
These rims, like the Chicago frames, were among the sturdiest ever built.
The parts that say "Schwinn" were made by Schwinn in their enormous Chicago factory (which I had the pleasure of touring in the early '70's).
Parts that say "Schwinn Approved" were made elsewhere to Schwinn's specifications.
Schwinn, Ray Burch and Schwinn's marketing department to develop the "total-concept store" as well as uniform work procedures, marketing, advertising and company service schools to keep all dealers up to date.Designating the width with a fraction instead of a decimal usually signifies a straight-sided rim, not a hook-edge rim. The most common difficulty is that the Schwinn 26 x 1 3/8 (I. Fast-forward to the 1960-70's, when Italian-made road and track bikes moved in to take over much of the mid- and high-end market. was made president of the company and promptly closed down all of the Paramount operations until they could be brought up to date.After the bike-boom of the early 1970's, Paramount was in a poor state of affairs in regards to competition and advancing technologies. Marc Muller, a young new Schwinn engineer, was given the responsibility to head up the project.When 7-Eleven decided to hit the big time in racing, Schwinn went its own way due to a lack of funding.Schwinn was, however, able to recruit an up-and- coming rider named Lance Armstrong to its ranks.