wheelchair accessible off road pop top

Hi psm won’t it be a lot easier and cheaper to make an aluminium ramp and then when not in use store it under nit the Van or vertical on the back of the van,
Just my 2 bob

There is an Australian maker that makes caravans for the disabled.
It is called the Accessavan Made by Roadstar.

Accessavan

andHere

If nothing else it will give you food for thought.

Roadstar make a wheelchair accessible caravan.
Not cheap but may give you some ideas.

Site Link

http://www.accessavan.com.au/

Ron Dickson

had a platform on back of van ---ramp dropped down sideways so as i could drive on electric scooter----also a ramp going up to entrance doorway

hope that helps ----my wife had emphasemia

There are ways around what you want. Depends how handy you are. You can make a lifter using 12 volt hydraulics very similar to a tail gate lift on a small truck.
Used to make them for disabled buses and such that took you from the floor of a coaster bus to the footpath.
In you case instead of a slide away you could use a fold up at the rear of the van and a simple lift and lower arraignment using magnetic micro switches to limit raise and lower heights, change over relays will allow to raise when lower is tripped and vice versa.
Steel frame and aluminium plates will lower weight of assembly.