38. 4 TYPES OF RESISTANCE 1) GRADE RESISTANCE 2) OVERTURNING RESISTANCE 3) MIRED RESISTANCE 4) WATER RESISTANCE = VW + C = (VW + C) x 1/2 WHEEL DEPTH = (VW + C) x 1 FENDER DEPTH = (VW + C) x 2 CAB DEPTH = (VW + C) x 3 = VW + C
39. OVERTURNING RESISTANCE Overturning resistance is that part of the weight of the vehicle which acts against the force exerted to bring it back on its wheels OVERTURNING RESISTANCE IS EQUAL TO ½ THE VEHICLES WEIGHT PLUS CARGO
40. 1. GRADE RESISTANCE Grade resistance is created when a vehicle moves up a slope and gravity affects the weight of the vehicle. GRADE RESISTANCE IS EQUAL TO 1 TIMES THE VEHICLE WEIGHT PLUS CARGO
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56. Ratchet Strap Operation The TeleCrib® Strut system comes with special Rescue 42 red 10,000 Lb. rescue straps. Hook clusters and cinch rings are also provided to increase system versatility. Straps are supplied in 27’ lengths. If you decide this is too long, you may simply cut the straps shorter and melt the ends. We recommend that you make several lengths of old fire hose slit up the side for use as edge protectors if the straps are against sharp glass or metal. Velcro may be applied on the inside edges of the hose for better operation. Straps are for use both with the struts, by themselves (example: strap two vehicles together or strap a vehicle to a fixed anchor) or in combination with the hook clusters or cinch rings. 3,335 lb working load / 10,000 lb test load, 12,000 lb impregnated strap
70. What is a Winch? NEXT A winch consists of a drum that is powered by a gear reduction system used for hauling or pulling.
71. WARNING! NEXT WARNING! DUTY CYCLE REFERS TO THE TIME THE WINCH CAN BE WORKING BEFORE IT NEEDS TO COOL DOWN. ALL POWERED WINCHES WILL BE SUBJECT TO A DUTY CYCLE. IF THE MOTOR HOUSING IS HOT TO THE TOUCH, THE WINCH SHOULD BE RESTED UNTIL THE HOUSING IS COOL.
What is a Winch? A winch is a machine that is used for hauling or pulling. A winch consists of the following: A Drum A Gear Box A Motor The drum is attached to the gear box, which is then driven by the motor.
Now that we’ve briefly covered what a winch is, lets also look at what a winch isn't. Many consumers may want to purchase a winch and use it for hoisting purposes. Hoisting is lifting a load up & lowering it down rather than pulling a load along the ground or up an incline. While a winch can be used to lift an ATV snow plow blade for example it should not be the sole means of support nor should it be stored in a holding position. Numerous standards exist for machinery used in lifting. Electric Hoists used for lifting must have, at a minimum, a 5:1 safety factor, switches to limit travel and one or more independent braking systems. Machinery used to transport people up and down are elevators and these have even higher engineering requirements. Winches are not hoists or elevators and should not be used as such. We do sell hoists, for material handling.
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