powerballs By Home › Forum Online Discussion › General › powerballs This topic has 0 replies, 1 voice, and was last updated 16 years, 4 months ago by Jernej. Viewing 1 post (of 1 total) Author Posts August 15, 2008 at 1:06 pm #28875 Jernej ungreased gyroscope is a great way to pump up spirals projections and wei chi work working the arms without straining the heart force control at very small rotation speed can be basis for longer practise whole arm/body work but on other side burns joints and tendons if forcing, misallingment or going for high speed most are good e.g. gyrotwist trembles less then ordinary nsd powerball and metal nsd powerball the least effect is the same as rotating 10kg dumbell around its center that is fixed in a gyro frame Author Posts You must be logged in to reply to this topic.