Recently purchased a RadCity 5 Plus e-bike and the unit was DOA upon assembly.  Unable to get support for the unit and concerned that I made a mistake purchasing from the company.  Hearing from other forum members that the company may be in trouble.  My impression of the product is that the hardware seems reasonably well made, but the Electronics (controller and motors) may be poor quality and not properly QA'd from factory.  Very disappointed at this point with the experience and the fact that I now have to spend time advocating from myself to get support and spend more time and money on repairing a bike that was purchased new.  At this point I would caution people on purchasing a Rad Power Bike.  My adventure has not gone well so far.