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Step 3Conceptualizing with the CAD system
Because I live in the high tech center of Silicon Valley, I use a sophisticated CAD system in planning my bikes.
CAD (Cardboard Aided Design) employs a full scale cardboard cutout of my: arm length to wrist, torso, thigh, lower leg and foot, crank and area swept bu my foot as I pedal. It has brad pivots at the shoulder joint. hip joint. knee joint and pedal axle as well as at the crank/bottom bracket axle. The movable joints let me reposition it to look at different torso angles (recumbent position or upright or crouched racer position etc. different leg extensions, knee clearance toe heel clearance etc.
A stick represents the ground line and I arrange a few bikes and parts on the ground with the CAD system to get a picture and a feel for the design possibilities, problems, and solutions.
I got the idea for the CAD system from this well thought out design method by Bikesmithdesign.com
12 steps to design a recumbent
CAD (Cardboard Aided Design) employs a full scale cardboard cutout of my: arm length to wrist, torso, thigh, lower leg and foot, crank and area swept bu my foot as I pedal. It has brad pivots at the shoulder joint. hip joint. knee joint and pedal axle as well as at the crank/bottom bracket axle. The movable joints let me reposition it to look at different torso angles (recumbent position or upright or crouched racer position etc. different leg extensions, knee clearance toe heel clearance etc.
A stick represents the ground line and I arrange a few bikes and parts on the ground with the CAD system to get a picture and a feel for the design possibilities, problems, and solutions.
I got the idea for the CAD system from this well thought out design method by Bikesmithdesign.com
12 steps to design a recumbent
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