This is what worked on my RV-3:
A scissor jack from a car. Has an indent or notch where the pipe can rest securely (fore/aft).
Approx 12" long 3/4" galvanized pipe.
00) Have as little fuel in the tanks as possible and otherwise lower weight on wheels.
0) Remove wheel pant.
1) Block the other wheel and tail wheel.
2) Remove "nut" from the axle if it's the type with a 1/4" nut plate or thread in the end for the wheel pant.
3) Slide pipe into axle. Put jack under pipe with about 2" clearance to pull the wheel out and allow a 2x4 under the root of the axel. Screw jack up until wheel clears the ground.
4) Pull the wheel out enough to be able to put a 2x4 on a block (4x4s or stack of 2x4s) under the now exposed axle root.
5) Lower and remove the jack.
6) Pull wheel all the way off the axle
7) Raise and lower the jack enough to put a better support under the axle as needed if the wheel will be off for a while.
Install is the reverse.
Perhaps a 2x6 or 2x8 screwed to a 2x6 would be better in step 3. Whatever you have available.
And, of course, be careful not to bump the airplane while the wheel is off. Not recommended in a hurricane or high wind conditions
There are other ways. Like a pipe clamp around the gear leg as attack point for a jack. The above was just whet I had laying around.