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1

For mounting, servo tape (strong double sided sticky tape designed for mounting lightweight servos) to a tile works fine in many cases.


5

I don't think it would be practical to evaluate every LEGO motors sound output, almost all LEGO motors are fairly noisy so I think it is best to address the problem of a noisy motor in general. My first suggestion would be to remove the source of the noise first, by using a purely manually operated dolly, if this isn't an option (perhaps you would prefer to ...


2

There are numerous solutions over internet for attaching SG90 servo with LEGO. However I remember this particular video, which fit your need to attach/control Technic beams/liftarms. It also features required parts for this build at 7:48.


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