Looking for hands-on experience with walkers (Legs/hips)

I’m looking for hands-on experience with different types of leg and hip designs for walking robots.I’m looking to find out, How do human-like legs compare to chicken legs and four-leg systems?

I’m interested in things like speed, agility, turning radius, complexity and cost.For a design large enough for a person to ride, rider fatigue is also important – how do they compare in terms of achievable ride smoothness, vibration, and so on?

Are there quantitative benefits of 3 DOF hip joints, compared to 2 DOF?
I realize other factors will come into play as well, such as actuators, joint designs and control systems. However, my interest at the moment is how basic leg designs compare to one another.

Don’t shout.

You might want to start with something scale first, since the tools and actuators required for something which a human can ride would be quite expensive and complex.
Perhaps start with the Lynxmotion Servo Erector Set: lynxmotion.com/c-73-servo-erector-set.aspx
In order to determine efficiency, you can try to develop the equations necessary and/or add sensors to measure current & voltage consumed.
Even though Lynxmotion has released a variety of different legged robots, the calculations required to determine efficiency were not done, and the efficiency is generally low.