I have been flagged for trying to figure out the problem with the Replacement ESC units sent out to those of us that have LiPo Rukus 2wd units...After doing some reading up on the power supply to this unit, I have learned that an 1800 mAh LiPo battery is not enough to supply the unit with the replacement ESC, DYNS2210. Increasing the battery power, however burns the stock motor up. It seems to me that Horizon Hobby needs to come clean and correct this issue properly...