Ball Bearing Pump

so far it is only a concept, i'll post an update if anything comes of this.
all dimensions are in centimeters.
should not be too hard to make, with the only necessary machining being the 1/8" side plates, but it would require putting a 90 degree bend in the end of the pump rod.
if you don't know what a phantom liiks like... here

Could work..... just need some really good enginners...