I am going to tell a story about Ariel Rider for a friend who is under gag order. Several years ago he bought a "class c" bike from them. The unit had a geared hub and center drive. The hub had no idler and the chain line was out of place. The cable leading to the hub had several sharp bends. The chain would fall off on any hit unless it was very tight. When tightened, a speck of dirt between the chain and sprocket would cause the motor to go into overload protection. It's not a good thing. Ariel could have sent new offset chain rings and instructions to reroute the cable (which, as it stood, wouldn't allow the IGH to consistantly change). The bike was pretty useless. Some owners said they were going to throw them in the trash. My friend took Ariel Rider to court because you cannot sell a consumer good in this country that is not fit for its intended use (called a guarantee of merchantability). Look it up in the Palm Beach County florida Courthouse. It was settled somehow. Ariel sold 7,500 of these, I think, and left them all hanging. The rest of the owners should start a class action lawsuit.