Board Thread:Speculation House/@comment-4830106-20141010002549/@comment-165.234.188.186-20141010073610

Alex T Snow wrote: About Ruby's semblance (and the same likely applies to them as a whole), she's always shown to have build up momentum to her super speed, and it also take a lot of energy. In the food fight she sort of "charged up" into it, and then with Penny she nearly couldn't get going, then passed out a few seconds later.

Taking a lot of both concentration and mental effort means it's not something she can just do all the time, like after suddenly falling through a hole. No she hasn't. In her trailer and several times in the forest and even episode 8 of this volume, she's been able to freely aplly her semblance. She might need start up tō produce torque, but certainly not to use her semblance.