Rotatable handgrip actuating system

摘要

A twist grip cable system having a mandrel received over the handlebar of a bicycle and a pulling spool providing increased mechanical advantage which may be used for the full range of rotation or In the case of a variable mechanical advantage system, that is one with a variable radius spool, for only part of the range. To provide even greater mechanical advantage, with the spool complete dropped away, a groove or slot is provided in the mandrel into which the cable may fall.