Winch

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The Binford Model 5000 MegaWinch

A nitch area of ham radio that I enjoy very much is erecting and taking down towers and the associated antennas. I enjoy the mechanical challenges, the satisfaction of designing various rigging and apparatus, and climbing and working safely. I have built most of my own equipment and rigging. I designed and built the winch to help with the heavy lifts. For safety, there is no integral motor drive. The winch is intended to be driven manually by a conventional ratchet wrench or electrically by a hand held drill. When a ground crew lifts a load manually, they receive constant feedback in the tension of the rope. An increase in tension immediately signals that the rope is binding in a pulley or the load is snagging the tower. There is no feedback to the operator of a conventional motor driven winch. The first indication of trouble may be a broken cable or collapsed tower. The operator of the Mega Winch will feel the increased torque in the wrench or hand held drill should the cable or load bind.

Top view. The front is toward the bottom of the picture. The unit weighs about 200 lbs.

This is the ratchet. It prevents the drum from paying out cable during a lift. The triangular ratchet block can be lifted out of the way so the brake can be used to control a descent.

The strap brake and drive shaft. A drill fitted with a standard 13/16" socket fits the bolt head at the shaft end.

The cable drum. It's currently loaded with 500' of 3/16" galvanized cable. It has the capacity for 500' of 1/4" cable. The cable pays out through the window in front of the drum.

Coupling arrangement between the reduction gear and drum.

Rear view shows the anchor clevises. These are used to secure the winch to trees or other stationary objects.

A side view showing the 20:1 worm reduction gear.

Last Edited: 05 Dec 2005
By: Mike Murphy, WA4BPJ
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