Why Use Three Jacks To Level And
Lift a Motor home?
One Point determines A POINT, Two points determine a LINE, Three
points Determine a PLANE.
Four POINTS DETERMINE CONFUSION (such as a four legged
table with one short leg)
A three point system can be compared to a CAMERA TRIPOD.
THREE POINTS ARE THE FASTEST, SIMPLEST, SAFEST METHOD
Axle capacity of the average entry level class "A" chassis is generally
rated at about 6000 lbs front axle and 12000 lbs rear axle with one
jack in front and two in the rear .
-THE JACK SIZE REQUIREMENTS ARE APPROXIMATELY EQUAL
A four point jack system using two jacks to level in the front and two to
level in the rear could lead to undesirable loading and stress of the
chassis. Studies have indicated that both the coach and the chassis
construction are not as rigid in the front as they are in the rear.
THEREFORE USING THE REAR TO LEVEL A MOTOR HOME(WHICH IS INCORPORATED ONLY IN THREE POINTS) IS THE
SAFEST FOR THE VEHICLE.
What Keeps The Vehicle From Tipping Over
When You Mount The Entry Step?
Because the center of gravity (THE POINT THROUGH WHICH THE
RESULTANT GRAVITATIONAL FORCES ON A BODY PASSES) or
center of mass (THE POINT AT WHICH THE ENTIRE MASS OF A BODY MAY BE CONSIDERED CONCENTRATED) resides in the
rear portion of the coach (VISUALIZE A TRAVEL TRAILER)- it is not
possible to tip the motor home over by stepping upon the entry step,UNLESS YOUR BODY WEIGHT IS GREATER THAN THE TOTAL
WEIGHT OF THE MOTOR HOME.