Reply to thread

Message

<blockquote data-quote="Rob Timmerman" data-source="post: 43350" data-attributes="member: 172">Re: Help needed- rotating drum riserSome thoughts, in no particular order:A standard theatrical approach to turntables is to build a full base enclosing the turntable, and use casters wheel up to support the turntable.&nbsp; This greatly reduces the load on the central bearing, and allows it to be simply a positioning fixture.&nbsp; Drive is often either some variant on belt drive, and need not be motorized, or a pneumatic tire driving the edge of the turntable.&nbsp; Getting the turntable to index properly with a varying load (and probably dynamic movement on top) is a harder problem than you think, and you&#039;ll probably want to either live with the turntable never stopping in the same place each time, build in some hard stops to the rotation, or implement a real control loop.&nbsp; If you limit the rotation, you can get away with simply looping your snake under the turntable.&nbsp; You can probably get away with ~360 degrees of rotation, but no more.&nbsp; For more rotation, you&#039;ll need another approach (wireless or Whirlwind&#039;s E-snake have both been used).&nbsp; Don&#039;t forget to fasten down your drum kit and mics - they may not stay where they were put when you start to move.</blockquote>

[QUOTE="Rob Timmerman, post: 43350, member: 172"] Re: Help needed- rotating drum riser Some thoughts, in no particular order: A standard theatrical approach to turntables is to build a full base enclosing the turntable, and use casters wheel up to support the turntable. This greatly reduces the load on the central bearing, and allows it to be simply a positioning fixture. Drive is often either some variant on belt drive, and need not be motorized, or a pneumatic tire driving the edge of the turntable. Getting the turntable to index properly with a varying load (and probably dynamic movement on top) is a harder problem than you think, and you'll probably want to either live with the turntable never stopping in the same place each time, build in some hard stops to the rotation, or implement a real control loop. If you limit the rotation, you can get away with simply looping your snake under the turntable. You can probably get away with ~360 degrees of rotation, but no more. For more rotation, you'll need another approach (wireless or Whirlwind's E-snake have both been used). Don't forget to fasten down your drum kit and mics - they may not stay where they were put when you start to move. [/QUOTE]

Verification