hi

i need cheap rice paddy irrigation pump, open source

I thought making some kind of rubber coated drum which would be friction driven by rear wheel of a motorcycle

and a centrifugal pump with toilet brush as the impeller

what do you think?

I calculate for the motorcycle to "drive" 30km/h the drum would have to have a diameter of 11cm

and I would glue a strip of inner tube in a spiral fashion over the drum to increase friction

I just wonder how to manufacture it centered enough in "kitchen" conditions

to not have problem with vibration at 24Hz

I thought if I make good DIY instructions

the poor rice farmers in Thailand could go from 1 crop per year to 3

I think everybody has a motorcycle there

and they are poor so they cannot afford buying a gasoline pump