rhagfo wrote:
The box sub frame is done all the time.
First you really need to know exactly how much you need to raise the 5er at the axles.
The best way I know of to do this is pretty easy.
1. Find a level place to do the measuring.
2. With 5er loaded as it would be to travel, and connected to the TV, then measure the height to the top of the bed rail from the ground at the pin. Call this measurement1.
3. Drop the 5er in that spot and level front to rear. Now measure at the pin the the distance to from the bottom of the overhang to the ground. Call this measurement2.
Now time for the math (measurment1 + 6") - measurement2 = amount of lift need at axles to be level. The 6" is the distance between bed rail and 5er overhang.
To Hertzog The OP!
Have you done this step yet? This is the only way you really know how much lift you need at the axles, all the rest is guess work.
