The requirements needs to be followed and all calculations shown. If more information is needed let me know these are 3 to 4 bar linkages (see CAD drawing attached with dimensions)
need stress analysis?
angular velocity - low, middle, and high end?
circumference of rotation?
RPM of rotation - low, middle, and high end?
Maximum force required to move the parts forward?
there will be a wheel on the bottom ?
torque required by each wheel?
all parts are 1/4 inch aluminum ?
force required to move the walker forward?
required MOTOR RPM?
there are 2 sets of these to make as a walker
all calculations shown?
weight can be calculated by applying material to CAD drawing and adding the total multiply by 2 (2 sets of legs)?
for reference you can use "jansen linkage system" if needed.
sample stress analysis included but may not be correct
Attachment:- CAD drawing and Preliminary Analysis.zip