Up for no reserve auction is this beautiful Klein Quantum Race Custom frame. Size is a hair over 53cm. I have never seen one like this and it says custom on the frame making it highly collectible and rare. It even has a pre-printed copy of Gary Klein's autograph on both sides of the top tube. As you can see by the stamp pictured this bike was also made in the Chehalis, Washington factory which is a big deal to Klein lovers. This auction is for the frame, fork, original Icon drop bars, original Cane Creek headset, original Icon stem, and saddle. Please contact if you have any questions.
Here is a brief history of Klein:
Klein Bikes was a bicycle company founded by Gary Klein that pioneered the use of large diameter aluminum alloy tubes for greater stiffness and lower weight.
Klein produced his first bicycle frames whilst a student at the Massachusetts Institute of Technology during the 1970s, and full production runs of frames began in the 1980s. In 1995 the company was purchased by the Trek Bicycle Corporation, and the original Klein factory at Chehalisclosed in 2002 as production moved to the Trek headquarters at Waterloo. Widespread distribution in the United States stopped in 2007, and ceased altogether in the rest of the world in 2009.
After graduating from MIT in 1974 with a degree in chemical engineering, Klein took a business course for entrepreneurs. 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. 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 the February of 1975. Gary Klein, born June 9, 1952 (age 64), attended the University of California at Davis before transferring to the Massachusetts Institute of Technology(MIT). During the Independent Activities Period in 1973, a group of students including Klein worked together under Professor Buckley to produce an aluminum framed bicycle. 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. 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.
Whilst Klein's use of aluminium for a bicycle frames was not entirely novel, his use of large diameter tubes was. Aluminium alloys have aYoung's modulus around a third that of steel, but with thicker tubes he was able to make a bicycle that weighed around 15% less than a conventional model. 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. 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. He started production runs of road bicycles in the early 1980s and mountain bikes in the mid 1980s.
In 1995, Trek bought Klein bikes, after Klein found it hard to compete without the sales network of a larger company in place.
At its peak, around 250 people worked at the Chehalis plant, but operation gradually moved to the main Trek factory in Wisconsin. In 2001, a workforce of around 70 people produced 15,000 to 20,000 frames a year. In 2002, all production moved to the Trek headquarters at Waterloo, Wisconsin. Bikes were still sold under the Klein name until around 2009 in Japan, but widespread distribution ceased circa 2007 in the United States.
Klein bicycles were famous for their paintwork, and offered a large number of custom colours and patterns. The paint used was a Durethaneenamel non-metallic paint that cost up to US$1,800 per gallon. The Klein logo was debossed into the frame by painting the frame in the colour of the logo, then applying a mask and painting the pattern.
Beginning with the MC2 frames, Klein used "Gradient tubing", where the wall thickness varied along the length and diameter of the tube. Highly manipulated chainstays on mountain bikes allowed a tighter rear triangle to accommodate large off-road tyres, and facilitated efficient transfer of power.
Welded aluminium needed heat treating to restore strength lost in welding. After the treatment, frames were required to be aligned to within 0.004 inches (0.10 mm) on all alignment surfaces, and were then machined to within 0.0002 inches (0.0051 mm).