1. crank arm = orange plate with cavity crank axis = x at center of black circle cavity 6 = hole in crank arm cam 7 = blue plate inside cavity in crank arm cavity generator = magenta curve on blue plate camshaft = black dot in blue plate pedal = green line centered at camshaft designer-specified pedal track = red track pedal track in a standard bicycle = black dashed track

2. crank arm = orange plate with cavity crank axis = x at center of black circle cavity 6 = hole in crank arm cam 7 = blue plate inside cavity in crank arm cavity generator = magenta curve on blue plate camshaft = black dot in blue plate pedal = green line centered at camshaft designer-specified pedal track = red track pedal track in a standard bicycle = black dashed track

37. crank arm = orange plate with cavity crank axis = x at center of black circle cavity 6 = hole in crank arm cam 7 = blue plate inside cavity in crank arm cavity generator = magenta curve on blue plate camshaft = black dot in blue plate pedal = green line centered at camshaft designer-specified pedal track = red track pedal track in a standard bicycle = black dashed track