A prim of any shape containing a simple script with the following LSL code: float SpinRate; default { state_entry() { llTargetOmega(<0,0,-1>,SpinRate,1.0); } } will intermittently or completely stop spinning when linked, as a child prim (in any order), to any other prim for SpinRate float values below 1.00. When the prim containing the llTargetOmega script is released from a linked set (of 2 or more prims) it will resume it's scripted SpinRate. If the prim is the root prim of a linked set, the linked set will spin at the scripted SpinRate. This has been tested at http://slurl.com/secondlife/Hong%20Kong%20Island/41/204/510 and at http://slurl.com/secondlife/Pandoria%20North/199/248/23.