1977 - Volume #1, Issue #2, Page #25[ Sample Stories From This Issue | List of All Stories In This Issue | Print this story | Read this issue]
Farmstar Gun Travels At Constan Speed
It's driven by cable and cable buildup on the drum, which controls the drive ratio for constant ground travel speed. A sensor arm constantly "reads" diameter of the cable take-up drum. As diameter of the drum increases as more cable is wrapped around it, the sensor automatically adjusts the size of the drive fully accordingly, providing a constant travel speed on hilly terrain, or in rugged terrain, such as wet or plowed fields.
The Farmstar travels 1 to 5 ft. per min. It'll cover 8 to 10 acres in a pass and operates efficiently on lower pressure since none of the water pressure is used to power the unit. "There is no slowdown in travel as the gun reaches the end of the run and is dragging up to an eighth-mile of hose behind it," Grahn points out.
He notes that the automatic speed control regulator can be over-ridden to increase or decrease the rate of travel. The unit is equipped with a Nelson gun which handles liquid manure without having to be modified. Power is provided by a one cylinder, 8 hp., air-cooled Duetz Diesel engine which runs all day on one gallon of fuel, says Grahn.
Click here to download page story appeared in.
Click here to read entire issue
To read the rest of this story, download this issue below or click here to register with your account number.