Re: [CAD_CAM_EDM_DRO] Re: Need help to decide what rack and pinion to use in a 6'x10' table

Hi Dave,

Put the encoder on the motor. Having it after a reduction setup can
cause major problems if there is any backlash in the reduction. You
shouldn't need more than 2 stage reduction. Some stepper machines are
even direct drive. Servos will need some sort of reduction.

Les

turbulatordude wrote:

> -
> A follow-up question I have is about where to put encoders.
>
> if you have a motor on a first stage belt, then a second stage, and a
> final and third stage, assume all are 3:1, would it be advisable to
> put it on the jackshaft of the first stage instead of the motor ?
>
>