Multimedia Product Development

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Servo Systems Pan Tilt Turnntables Sliderails Servos Camera System Motor Controller Systems Documentation Labeling	Pololu UCTronics Sparkfun Adafruit Jerry's Servo City Robot Shop Robot Shop Turntable

Rotisserie Motor

Simple Turntable Controller.

Tow of these or dpdt swithces

How to Design a turntable drive...
Video
FMP torque calculator
Ratio times input = output torque.
2:1 with 3 kg applied = 6kg of force
Efficiency
Use timing belt and timing belt gears.
Build Table and test with scale to calculate toque required at point of drive
Ration of gears / pully with detemine force multiplier.
In your case 3 kg.cm means that a "force" of 3 kg acting at a radius of 1 cm would produce the same amount of torque as your motor.
Equally that could be 0.1 kg x 30 cm, or 10 kg x 0.3 cm or ...
Build the basic turntable, attach a string to the edge- use a spring scale to measure how much pulling force it takes to rotate the turntable.
Measure the radius from the center where the string attaches to the edge, your torque is equal to: ( force * radius )

Now divide this torque by the pulley ratio to get the motor torque required, then double that result for a safety margin.
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I believe 1/8 is too small to work with on 10 guage wires. I use 1/4 for my servo leads and 12 guage wires also.
Tip-watch a video on how to install the braiding. There is a learning curve to do it neat and painlessly without waste.
You have to burn/ melt each cut before installing or the braid will shred apart as you stretch/pull it over the wires.
Heat shrink to secure once in position. Braid will stretch and expand in diameter as needed up to a point.
Stateside

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Ebay Servo Braid

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Syncronous Motor

CW/CCW Torque 4Kg.cm

After a full stop, the drive mechanism is usually pressed against the load in the direction of the last rotation.
When the motor encounters the load, it reverses itself and gets a small running start
(with no load for a small fraction of time) to pick up speed before engaging the load again.