There is a previous post with info on this topic, headed 'Flat Tyre'.

I've taken some photos of the jack that came with my Australian Fournier. It was presumably made by the previous owner, Damien O'Reilly. The framework is made of simple extruded rectangular cross-section steel. Steel rod axles go through holes in the framework, and cheap wheels are held in place on the ends of these with split pins. Mounted on the frame are two standard scissor car jacks, the sort that come with most Japanese cars. You could buy a couple for pennies at your local auto wreckers. They are fixed to the framework with Tek Screws.
On the top of each jack is a steel rocking arm, held in place with a bolt.

As you can see, you merely wheel the jack under your Fournier's skids, insert the crank into each jack in turn and wind your RF4 into the air.

If you put a small weight on the tail, you can get all four wheels off the ground.

Note my old tyre is a 'racing slick'. The 'new' one is second-hand and pretty well worn too. This is for lightness, like everything else on my little aeroplane, so she will go vertically upwards long enough for me to make a quarter-roll.

I can send more details if anybody else wants to make a jack like this.

PS, you can also see that I need to insert two small blocks of wood under the fronts of my skids to make up for the worn-away wood, since I've been too lazy/busy to replace them since my wheel-up landing two (or was it three) years ago.

Yours, Bob

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