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WSI/Avenir Exercise Bike & Bicycle Helmet CLIENT: Bartlett Design Assoc. (See Edge in Favorite Resources) END CLIENT: Western States Importers (Avenir) PROJECT DATES: Various dates in 1989 TASKS:  Under the direction of Bill Bartlett: Bike: Mechanical Design of the chassis & various components. Part drawings. The exercise bike had an electronically controlled hysteresis resistance force and alternating handle bar and pedal movement (fixed handle bar version shown). Helmet: Created a digital database reverse-engineered from mockups. In 1989, no PC-based 3D CADD tools could handle the shape of the helmet, so I had to loft & project sections through the shape in 2D; Eventually resolving 3 views of sections to describe it. A real mind-bending exercise! ABOVE IMAGE(S): Photos of hand-fabricated mockups designed and built by Kevin Clay and Jim Hirsch.