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CORRECT
EVALUATION OF WINCH USAGE
In order to
understand the correct usage procedure for all winching applications
please read the following information, Failure to understand
and execute this procedure in the use of any electric winch
will cause a considerable shorter life cycle to your new winch.
The information
provided below will help you in selecting the correct model
of winch to suit your required application.
Winches used
under certain conditions i.e salvage & recovery every day
use will require a much higher output motor than that of a less
frequently used winch which is pulling only small boats etc
from water onto a trailer.
Remember -
When a vehicles weight is approx 2t and the requirement is to
load the vehicle up ramps onto a recovery vehicle then the weight
of the vehicle is greater than its previous weight when on level
ground, the requirement of the winch is far greater due to the
fact that it obviously takes more effort to pull the same weight
up a gradient than along a flat surface. The required ratio
of a winch for this application would be minimum 9000lb (4.1t)
Please note the 9000lb rating is a maximum on the first layer
of cable on level ground.
Winches are
rated at their 'Straight line pull' capabilities and therefore
it is essential to evaluate the use of the winch prior to purchase.
The same applies in a 4x4 vehicle situation when pulling a 4x4
either up a gradient or out of 2 feet of mud!
In Plain English
- A 2ton winch would not meet with the requirement of 4x4 uphill
climbing for a vehicle weighing 2 tonnes, the requirement of
the winch for this task would be 9000lbs minimum. Any smaller
winch would inevitably prove to be both dangerous and false
economy causing premiture failure.
People often
purchase a winch rated at 2 ton which may be the same as their
vehicles weight, they are then dissapointed when the winch fails
under use due to wrongly selecting their requirement upon purchase.
Tradewinch will not supply any winch for a 4x4 of less than
9000lb Series wound specification.
Winches need
to be powerful enough to pull your vehicle whilst overcoming
the added resistance caused by obstacles such as moving water,
mud, snow or sand or on a steep hill. As a general guide the
requirement of your winch must have a maximum line pull of at
least 2.5 times the vehicles weight.
How Winches
are rated :
Load and speed
vary according to how much wire rope is on the drum, The first
layer of rope on the drum delivers the slowest speed and the
maximum load. A full drum delivers the maximum speed and the
minimum load. For this reason, all vehicle winches are rated
at their first layer capabilities
Please see
examples below
Vehicle Transporter
/ Recovery Vehicles
A vehicle
weighing 1 ton winched up the ramps of a recovery vehicle with
a 30% gradient would convert the vehicle weight whilst on the
gradient to a mass weight of 2.5 ton. Therefore using a 1 ton
winch for a 1 ton vehicle for these conditions would be totally
un-suitable. A minimum requirement of your winch would be 2.5
ton for a 1 ton vehicle + any multible thereafter. i.e a 2 ton
vehicle would require 2.5 times the line pull i.e 2.5 x 2 ton
= 5 ton minimum. Any vehicles which may have other restrictions
such as flat tyres, binding brakes or wheels missing etc would
multiply the require line immensley therefore these factors
MUST be taken into consideration when purchasing a new winch.
The use of a snatch block is strongly advised along with shortening
the cable will increase the power of your winch.
All winches
are rated at maximum power on the first layer of cable only.
All instruction booklets must be read and observed prior to
first use.
Our suggested
requirement for entry level to the above would be our 8500lb
winch with the 5.5 HP motor (Minimum)
4 x4 Vehicle
examples
A 4x4 vehicle
with a kerb weight of 2 tons requiring pulling up a gradient
of 20% in mud would convert the weight of the vehicle to 5.5
tons. Therefore a 2 ton winch would be totally unsuitable for
this application. A minimum requirement of your winch would
be 5.5 tons.
The use of a snatch block is highly recommended under these
conditions. Please note - It is strongly advised that these
factors are taken into consideration when selecting your new
winch.
Our suggested
requirement for entry level to the above would be our Platinum
Range 9,000lbs with the 5.5 HP Motor (Minimum)
IMPORTANT
NOTICE -
The use of
a winch for the lifting or transportation of persons is strictly
forbidden, the wire bond is secured only by a automatic brake
system which could fail under certain conditions risk of death
could occur.
Tradewinch
will not be held responsible for any accidents, failure of equipment
or otherwise under any misuse conditions detailed here.
Tel
01895 234400
Mobile
07801 981100
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