Originally Posted by captnjack
And besides you still have the problem when you jack the frame that the wheel drops on the suspension and drags on the ground.
Jack (pun intended), that's the point, in effect there is no axle. The chassis & axle are effectively one unit. Jacking the chassis, jacks the axle. If you look at the photos, there isn't anywhere to jack up the wheel. When you lift the trailer, the wheel sag is minimal, due to the nature of the suspension. The only bit that moves in relation to the chassis is the small swinging arm between the end of the axle & the hub. With a wheel mounted, its virtually impossible to get a jack under there & if you could it would be very unstable. If you lower the jockey wheel (or vehicle suspension
) block up under the rear of the chassis, raise the jockey wheel/suspension, you can virtually get the wheels off the ground without using a jack, be it on a drive, roadside, or field.