We've added a winnowing system to the impact huller using PVC pipe and put a window on the huller so the action can be seen.
This video shows how to separate the hulled and un-hulled rice using a perforated stainless steel sheet and taking advantage of specific gravity differences between the hulled and un-hulled. The metal is .05" thick with 1/8" holes. Aluminum is much less expensive than expensive the stainless steel. The video show the motor and frame suspended be bungee cords but any hanging system may work.
The impact huller can be powered with different motors. I was unable to create a method of powering the impact huller with a bike. One may need to create a 30 inch pulley which would be quite difficult to obtain 3,000 rpm. This video has building instructions.
Video our Thomas International impact huller with a DC battery powered motor instead of the AC motor
Video of a homemade grain de-huller rice, millet, canary seed, buckwheat, and hard yellow field peas
This video is of the impact huller directly attached to an electric motor
While setting up the new winnowing system we realized we could add an impact surface to split hard field peas. We replace an energy absorbing surface with a hard tile and we were able to processes the peas by only inserting this into the transfer box.
Video our Thomas International impact huller with a DC battery powered motor and a rototiller motor with the motor still mounted on the rototiller.