jwcolby54 wrote:
My concern is that the jacks are typically mounted parallel to the bumper. Jack that thing up very far and if the RV does start to move in either direction, forward or backward, the jack itself would "roll" the RV the direction it is already traveling, and end up dropping the rv, ruining the jacks, and likely doing damage to the RV in the process.
Definitely a concern.
They are mounted parallel so that you can more easily access the bolt to do the raising/lowering. I completely agree with you that if the RV rolls (even just a few inches) it will likely bend the jack. I don't think it would necessarily cause any damage to the RV, but your jack would be "jacked" (aka bent/broken). Perhaps if I added these on the rear (as close to the axle as possible) it would be my protocol to ONLY have one rear actually lifted at any given time and make sure the other one is on the ground so that the RV cannot roll (because the brakes will hold the RV in place). So as far as leveling goes, they would only come in handy if just one of the rear sides needed to be lifted some. They could also be used for stabilization.
An added benefit of having, for example, one of these 9000lb scissor jacks mounted at the rear frame as close to the rear axle as possible is that it could be used to change a tire if needed. I've also had to jack up the rear to adjust valve stems, and add a flush system, and fix my black waste tank..... So it does seem to come up from time to time. :-)
I'd still like to know from those in the know if it is okay to lift the rear corner of a Class C RV from the frame I-beam as close to the rear axle as possible (maybe ~3' from the rear axle). Anyone know? From some video links I posted in a post above, it seems like this is where (seemingly) professionals have installed lifts, but I'm still interested in more feedback if some here have experience.
Happy Camping!
Chris