Now that the WaterBuck is gaining attention, we have been asked many times how deep the WaterBuck can pump from and how much effort is required.
The WaterBuck Pump is currently and efficiently operating in the range of 12’ – 14’ diameter windmills, therefore we now anticipate reaching depths around 700’. But how can I say this and what is this conclusion based on?
As with any original design, it takes time to test the limits of the device in real conditions. Testing the limits of our pump in real conditions and with as many applications as necessary would require about 12 wells with different static water levels. Since we started and for the past year, we are testing the maximum lift (from 80’) of the WaterBuck with a large windmill cylinder and pressure tank. Pressurizing the tank to 50 psi from 80’ with a 4” cylinder is equivalent to pumping to an elevation of 195’. These test results indicate how much deeper we can pump from with the same size cylinder with 1 or 2 operators and how much deeper we can pump from by reducing the size of the cylinder.
The charts established for water-pumping windmills have proven to be very useful for revealing the possibilities of the WaterBuck Pump. In the following chart, note the capability and depth of a 12’ windmill in gallons per hour (gph ÷ 60 = 13.8 gpm) operating a 4” cylinder.
It takes a strong machine to efficiently pump as much or more gpm than a 12’ windmill. Not only are we pumping more gpm than a 12’ diameter windmill does at the same depth, we are operating around the same maximum depth as the windmill can on the long stroke with a 4” cylinder. And this is accomplished by a 160-pound man in his 50s who is currently pumping 17.5 gpm while breaking in a new cylinder. At a static water level of 30’-40’ the effort required would be much less, yielding as much as 24 gpm by the same operator and same size cylinder. The increase of gpm is just an additional 10 cycles of the pump lever.
The WaterBuck with a 6” cylinder pumping from an elevation of 30-40’ with the same operator could yield more than 32 gpm, and more than 40 gpm with a fit, strong man.
Taking another look at the charts, the maximum depth the 12’ mill can reach with the long stroke is 420’. If the short stroke is used, elevation is increased by 1/3. We anticipate the same results by a man in his 50s with the WaterBuck.
Because of the unique mechanical advantage of the WaterBuck, the possibilities are incredible. We anticipate continuing to exceed the peak performance of 12’mills in gpm and depth and exceed 14’mills in depth with 1 and 2 operators.
A 12′ mill operating a 8″ cylinder from a static water level of 22′, can pump 55 gpm. We also anticipate the same results by a man in his 50s with the WaterBuck.
How much effort is required to pump water with the WaterBuck?
The effort effort required is being tested. Considering the pump makes an efficient use of human shape, motion, strength and weight, it is simple and easy to use. We do see that a grandmother can yield half as much water per minute than the peak performance of a 12’ mill. Therefore we anticipate she could do the same at any depth with appropriate cylinder. Stay tuned for more updates!
Field testing updates: 80′ static level, 4″ cylinder,16″ stroke, 0.87 gallons per cycle.
While they were at it, they set a new high-water mark for pump capacity by filling a 55-gallon barrel in 3 minutes and 42 seconds with 64 cycles of the pump lever.
© 2013 Well WaterBoy Products LLC ♦ WaterBuck Pump™ ♦ Pedal Powered PTO™