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Winching
Guide
Mire Resistance
For recoveries in mud, sand, or snow, mire resistance becomes a factor. Mire resistance
is the added resistance that the soft terrain adds as the vehicle is submerged beneath
the ground level. The vehicle’s GVW is used to estimate the recovery load.
•
Wheel Depth = 1 x GVW
•
Fender Depth = 2 x GVW
•
Cab Depth = 3x GVW
A snatch block is a great
way to double the pulling
power of your winch.
Tackle Resistance
Each shackle that is used in the recovery rigging adds a small amount of
resistance to the winch. Each snatch block used in the recovery adds about
10% to the recovery load — add this to the recovery load on the winch.
Example: 4000 lb recovery load +10% = 4400 lb winch load
Wheel Depth Mire
Fender Depth Mire
Cab Depth Mire
