Amp draw on a 8xl ?

[BrianG]

It's really hard to say. There are other factors that affect amp draw like weight, drive style, etc. I would recommend looking at a similar setup in the runtime thread, calculate the average amp draw by dividing the Ah rating of the battery used by the runtime, and then multiplying that number by 6 or 7 to get a decent estimate of the burst current draw. It's not very scientific, but seems to be a fairly good rule of thumb.