Rotary-spool Rotary-spool reels can be further subdivided into two types: single-action and multiplier. Single-action reels have a synchronous rotating action between the crank handle and the spool (hence the name, "single[-ratio] action"), and quite often the handle is mounted directly on the spool frame (in which case, the spool frame itself becomes the crank). Multiplier reels, on the other hand, have an internal gear train design that amplifies the number of spool turns for every turn of the crank handle,Henshall 1881, p. 244. A multiplying reel uses a gear system to produce two or more revolutions of the central shaft (spool) for every revolution of the crank handle. allowing much faster line retrievals. The spool on multiplier reels also spins in the opposite direction to that of single-action spools.
Rotary-spool Rotary-spool reels can be further subdivided into two types: single-action and multiplier. Single-action reels have a synchronous rotating action between the crank handle and the spool (hence the name, "single[-ratio] action"), and quite often the handle is mounted directly on the spool frame (in which case the spool frame itself becomes the crank). Multiplier reels, on the other hand, have an internal gear train design that amplifies the number of spool turns for every turn of the crank handle,Henshall 1881, p. 244. A multiplying reel uses a gear system to produce two or more revolutions of the central shaft (spool) for every revolution of the crank handle. allowing much faster line retrievals. The spool on multiplier reels also spins in the opposite direction to that of single-action spools.