Schwinn Airdyne model AD4 in Brown for $250.00. This bike is like new and works great. Sold new by Burgess Schwinn in Salina, Ks. I prefer these older Airdynes to the new plastic fan models selling for $700-$900 because they are more comfortable and have normal heavy duty bike pedals. They are made in the USA and are made to last a lifetime. You can still buy all parts or accessories like a rea...