Talk:Documentation/Video

= LifeTrac Wheel Assemblies = Note that the video is out of date. While attempting to use the LifeTrac to prepare ground and perform other work to construct the HabLab, the hydraulic couplers (part of the wheel assemblies described here) were found to be deficient in design after catastrophic failure (the couplers actually ruptured, crippling the LifeTracs). New, stronger couplers were subsequently designed as a fix but are not shown nor described in this video.