Mechs have many different options for locomotion. While rockets and devices capable of flight are common, they generally require a lot of energy from fuel sources, whereas a simple mechanical form of locomotion may be more reliable and less costly overall. Many mechs use a combination of flight and locomotive appendages to allow flexibility for different situations. Even among locomotive appendages, there are different strategies. Some use humanoid legs to get around, while others use wheels or tank treads. Some types of mechs use many smaller legs, much like an insect. Mechs designed for spaceflight may use appendages designed to simply precisely position propulsion devices like rockets. It all comes down to taking advantage of the environment the mech will be used in. Flexibility for many different environments is usually a tradeoff for adaptation to a specific environment.
Migrated from original Mech wiki:
APPENDAGES THAT ALLOW MOVEMENT OF THE MECH
Mechs have many different options for locomotion. While rockets and devices capable of flight are common, they generally require a lot of energy from fuel sources, whereas a simple mechanical form of locomotion may be more reliable and less costly overall. Many mechs use a combination of flight and locomotive appendages to allow flexibility for different situations. Even among locomotive appendages, there are different strategies. Some use humanoid legs to get around, while others use wheels or tank treads. Some types of mechs use many smaller legs, much like an insect. Mechs designed for spaceflight may use appendages designed to simply precisely position propulsion devices like rockets. It all comes down to taking advantage of the environment the mech will be used in. Flexibility for many different environments is usually a tradeoff for adaptation to a specific environment.