Signal damping

I know very well what an accelerometer measures. The problem is in our interpretation. Maybe I want to point out something, which is right, but read by another one might be very wrong, the cause being the english.

I will repeat everything just to be understood:

  1. I know what an accelerometer measures. Force. I know physics.
  2. Yes, the noise is caused by motors.
  3. What I want is to reduce in the first stage the vibrations from the sensing board. (here I observe my bad. I said noise from the motors. I was referring the vibrations)
  4. I tried already using rubber mounting on the accelerometer. I tried also the PU gel. (I got improvements, but not as much as I want)
  5. Do you know a better solution than all of these? I was advised some time ago to sink the board into some form of fluid which would reduce most of the vibrations. What do you think/know about it?

Thank you,
RobertEagle