Unfortunately I have not yet the elements to build it.
https://kitewinder.fr/ has some materials comprising propellers and rope-drive elements. All that is missing is a SuperTurbine ™ shaft driving the propellers.
This picture allows to understand better my previous comment. When the belt hub (seen from the front in the picture, between the propeller hub and the return pulley) causing the return pulley is mounted in the other side, the belt turns in the same direction while the connected propellers rotate in the opposite direction.