I've done some reading and I don't believe any of my castle ESCs are capable of data logging. It seems that they didn't introduce that feature on the surface models until the x line. I emailed castle to confirm but in the meantime is anyone aware of a logger similar to the eagle tree? Apparently they are out of business and I don't see much in the way of used ones floating around. Worst case I could buy an ESC with logging but a separate unit would be much more convenient