D.E.Bishop wrote:
The owners manual for our 1990 Bounder had instructions for building the three level ramps discussed earlier in this post. They worked well for me. There was a little problem, however, they were darn heavy....
Yes, they can be heavy. My thoughts on that, though, is it makes for good, forced exercise. My fat butt needs the exercise, haha.
When the kids come with us, I just have them lug those large blocks of wood. The exercise sure won't hurt them, either. :)
That said, all the examples here deal with FRONT of the RV being low. The manuals for the Bounder and the Winnie note that when leveling when the rear is low, that blocks must go under all the rear tires not just one on each side.
I've wondered about that, too, and seem to recall some discussions some time ago about whether or not both dually tires (inner and outer) need to be supported.
What I've found (through many discussions, and many years experience doing it this way) is that NO, you do not need to support both the inner and outer dually tire when pulling the back end up on blocks. The outers are enough. That is, as long as you deploy your jacks as well.
Main reason being, the rear jacks will be supporting a good bit of the weight. Especially since you would typically raise it a good bit more with the jacks even after putting back end on blocks, if you are that far off level.
The tires will not have the entire weight of the back end on them. The jacks will be shouldering a good bit. You are mainly using the blocks under the outer tires to provide more lateral stability. One tire on each side gives you that in the back, just like it will in the front.
Now, you *DO* need to get the entire (outer) tire tread supported/covered on the block, you don't want even a little bit hanging off the edge of the block. That can cause some premature tire failure. That is true for both the rear outer tire as well as the front tire, if you're raising the front.
While it wouldn't be a bad idea to support both the inner and outer dually and would make things even more solid.....Not sure it'd be worth it to lug that many heavy pieces of wood around.