![vintage chain bike corparation bicycle serial number chart vintage chain bike corparation bicycle serial number chart](https://dl-mag-media.dlgdigitalservices.com/lib/img/How-to-prevent-your-bike-from-being-stolen.jpg)
![vintage chain bike corparation bicycle serial number chart vintage chain bike corparation bicycle serial number chart](http://onlinebicyclemuseum.co.uk/wp-content/uploads/2011/09/Elswick-Hopper-frame-dating2.jpg)
He started production runs of road bicycles in the early 1980s and mountain bikes in the mid 1980s. In 1977, he patented use of large diameter aluminum alloy tubes to increase stiffness, and in 1980, he moved from San Jose, California, to Chehalis, Washington. The next year, he relocated to some disused buildings on his parents' farm in San Martin, California, that had previously been used for dehydrating prunes. The prototypes, with larger diameter tubes and thinner walls than those produced in 1973, were displayed at the International cycle show in New York in February 1975. As a keen road racer, in 1975, he started a business project with three other people and built a limited run of aluminum alloy framed bikes at the MIT Innovation Center, using a US$20,000 grant provided by MIT and US$1,000 of capital from each partner. Īfter graduating from MIT in 1974 with a degree in chemical engineering, Klein took a business course for entrepreneurs. Faced with limited available types of aluminum alloy tubing, the students chose to construct frames from 6061 aluminium alloy seamless drawn tube alternatives such as the stronger 7075 aluminum alloy were discarded because of the tubing dimensions.
![vintage chain bike corparation bicycle serial number chart vintage chain bike corparation bicycle serial number chart](https://cimg2.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/img_20190721_073820_39f7810ab9188d8b4c5eaefa2fc9fa703467b004.jpg)
After analyzing a number of contemporary steel frames, and examining ones that had broken in use, they were able to determine the stresses placed on a bicycle frame. During the Independent Activities Period in 1973, a group of students including Klein worked together under Professor Buckley to produce an aluminum framed bicycle. Gary Klein, born ( ) J(age 69), attended the University of California at Davis before transferring to the Massachusetts Institute of Technology (MIT).