There are different types of pulley block, but use only the one in the centre
On the left is a cheap, useless and weak long-link chain - not good enough. On the right is a special Grade 80 alloy - short-link chain
There are different types of pulley block, but use only the one in the centre |
On the left is a cheap, useless and weak long-link chain - not good enough. On the right is a special Grade 80 alloy - short-link chain |
You might well ask, is all this effort worth it? In a nutshell - yes. It is imperative that the wire rope is pulled on to the drum very evenly across it.
Don't continue to winch if the layers open out on the drum
Pulling lots of wire rope on to only one end of the drum is no good at all. By loading only one end of the drum, all good procedure goes to pot!
Remember the gearing principle of the winch. The smaller the diameter of the drum, the stronger the pull. As the rope builds up on one side of the drum, not only are you going to lose about 10 per cent of pulling capacity for each layer but you run a real risk in damaging the wire rope as it tries to pull through the many layers.
Also, you could guillotine the wire rope as it gets trapped between the built-up layers and the winch support rails or fitting kit. The answer is always winch with the wire rope being pulled in square to the vehicle.
(c)Goodwinch Limited 2006
