Hello, 
The system is composed of 2 mechanism (used as sub mechanism):
- Product Motor (with 1 pilot:  rotation of small Pulley
- Gyroscope (2 pilot: rotation of yello part and Rotation of big pulley)

On each mechanism it works fine, but on the global mechanism:
- pilot fo small pulley : rotation of pulley "Reach mechanical limits of the model"
- pilot of Yellow Part : OK !!
- pilot of Gig Pulley "Reach mechanical limits of the model"

Questions:
- How can i solve this problem of "mechanical limites" ?
- How can i link pulley rotation ? (pilots are on differents mechanism)

Thanks