4 post system is better than 3 post for casters....
dfrank,
It sounds like your camper has only a 3 post jack system... I would be very careful using the caster idea on that since the side load on the three legs is much higher than on a 4 jack system.
On 4 jacks, with the casters, I can only raise each jack 3" to 4" before moving on to the next jack to even out the lift. any more than that and I have had the odd leg hanging in the air.:Wow1:
I'm guessing that your center post always has a lot of side load, which can quickly go out of control when adding a caster to the bottom. I would certainly be sure that the brake is set on all the wheels on a 3 post system. On my 4 post I don't even have the brakes set when raising or lowering the camper, I try to lift it that evenly. The forth leg keeps the lift from losing control, should one of the legs start to go.
This will make me think twice about posting some of my ideas in the future
![Oops! :oops: :oops:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Please, no one try this without applying some common sense.... use at your own risk.
dfrank, I'm sorry for the time you spent trying to get this to work.
Prybry