How to build an adjustable creeper?

[jaybeckham]

Due to my knee replacement and being older in general, I find it very difficult to work under anything including a car. I can lower myself down on the normal creeper. I have a model railroad and need to get under it for maintenance, repairs, and building new features. Below are two examples of the kind of thing I need and want to build. I would hope maybe someone on here has done this or has some ideas.

The first one is the best example of a creeper that would help my situation. I do have metal and wood working skills and tools.
Any ideas would be appreciated.
Jay Beckham

[Jon]

Moving this one into our Tools in Progress subforum so you can get some good ideas.

BTW we recently featured the Human Hoist chair. Similar concept, although I don't know if it's for sale yet, and if it is, it is most likely quite expensive. GIF below, and more details here: Human Hoist collapsible garage work chair

[Loose Ctrl]

Look at a scissor jack from a front wheel drive vehicle, then scale it up with a mobile base plate similar to a mechanics creeper. You may even be able to use a creeper and just install a modified electric scissor jack. You would only need about 20 inches of lift.

Here are some product links for reference.
https://www.amazon.com/Black-Bull-EJ...75911231e7e62b

https://www.amazon.com/USA-Made-Prof...f00053f7a4fbb8

https://www.amazon.com/Traxion-1-100...fd0d4a28ab3f65

https://www.amazon.com/Torin-TR6452-...a7e23c2dc1e95b

[love-horsepower]

I would use a fast acting linear actuator 12v DC and run it off of a 18v Milwaukee battery

[stingraygs]

Look for a used "Hospital" type bed (try Craig's list). should provide the actuators and hinges as well as control & scrap steel.

[Yaculls]

Hi Jay,
May be you could adapt this.
http://ricksfreeautorepairadvice.com...anics-creeper/