I installed a Burr lift about 12 years ago. My girlfriend has MS and is stuck using a wheelchair full time, so I modified the platform to work with a manual chair only. At one time she had a microscopic power chair it worked with, but a normal power chair creates too much cantilevered weight. No doubt the lift is slow, but it serves it's purpose. We also use short and long ramps for different purposes. After twelve years of service, I had to completely service the acme thread screw by taking it completely apart, and also had to hand rebuild the motor assembly including fabricating new brush spring studs, sanding the commutator, etc. For the original install I added a 1/2" thick x 4" wide steel vertical brace with gusseted foot on the inside surface of the wall by the door frame to stabilize the wall structure. My girlfriend is light, and I always back her onto the lift and then backwards into the trailer. She doesn't use this device by herself since there are no safety rails or stops. I like the ramp better, but it's only suitable for longer term setup. Ask any questions you want. I hope you find a workable solution.
