I was looking at the Schwinn s-500 at the Academy sports and outdoors website, to get to and from work, and it was $299. Later I was looking for reviews of the s-500 and I came across the 500 cd, the details are the same as the s-500 (top speed, range, etc...) but it was $100 cheaper!
A: I just bought the s-500 CD. I believe the difference is that the CD is a chain-drive, and the s-500 is direct drive. Seems to me that direct drive would be more prone to wearing out the brushes in the electric drive motor faster, as it does not have the ability to freewheel.
