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3-Pt Post Pounder Has 950-Lb Hammer
"It pounds posts fast. Works better than anything on the market," says Ken Coulter, Dutton, Ontario, about his 12 1/ 2-ft. high, 3-pt. post pounder equipped with a 950-lb. hammer.
Coulter used 6-in. channel iron and 1 1/4-in. sq. tubing to build the frame and mounted a home-built hydraulic cylinder at the top. The cylinder is half as long as the post pounder frame. A large pulley mounts on the end of the cylinder's pis-ton, which pushes out toward the ground. Another pulley is mounted on top of the hammer guide. A steel cable is threaded through the two pulleys and down to the hammer. A control lever on the side of the post pounder hooks up directly to the tractor's hydraulic outlets. Coulter pushes the lever to release the oil from the hydraulic cylinder and drop the hammer.
The steel cable and pulleys make the stroke of the hammer twice as long as the cylinder. It takes longer to drive to the next post than it does to drive it," says Coulter. "A metal helmet covers the top of the post and is equipped with guides that hold the post in line."
Coulter used 1 3/4-in. steel plate to make the bottom of the hammer and 1/2 in. steel plate to build a sq. steel box around it. The box is filled with molten lead. He made the hydraulic cylinder by salvaging the 6-in. dia. piston from the end of a hydraulic cylinder and built a guide to keep the piston centered inside a 7 1/4-in. dia. steel barrel. "There's just enough oil inside the barrel to lift the hammer. The cylinder doesn't displace much oil so it goes down fast," notes Coulter.
Coulter spent about $650 to build the post pounder.
Contact: FARM SHOW followup, Ken Coulter, Rt. 2, Dutton, Ontario, Canada N0L IS0 (ph 519 762-3026).


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1994 - Volume #18, Issue #6