This reel's Dyna-Balance feature eliminates wobble during retrieve by counter balancing the rotor. The 1000 FD's Fluidrive II feature is a polishing of the gear surface, which maximizes tooth contact. This model differs from the closely related 500 FD model in that the 500 FD has only twenty-one inches of line retrieve per crank (as opposed to the 1000 FD's twenty-eight inches), has a different line capacity (2/190, 4/100, 6/60 as opposed to the 1000 FD's 2/270, 4/140, 6/110), a different power pro line capacity (5/135, 8/105, 10/65, 15/60 as opposed to the 1000 FD's 10/95, 15/85, 20/65), has only four pounds of maximum drag (as opposed to the 1000 FD's seven pounds), has a gear ratio of 4.7:1 (as opposed to the 1000 FD's 5.6:1) and weighs 5.9 ounces (as opposed to the 1000 FD's 6.9 ounces).The Shimano Sahara 1000 FD spinning reel has a Propulsion Line Management System that features a spool lip design geared toward cutting down on backlash and increasing cast distance.
