The aft main gear has a single large pivoting arm that retracts aft. The shock absorbing damper is connected on the inside and takes all the landing load.
Since the assembly is mostly buried inside the aft gear bay it will not be visible, so you decide how much detail you want there. The most important thing is that it is structurally strong enough to support the plane.
I added a metal paper clip to support the pivot axle to the wheels axle. Use super glue .
test fit the wheels on.
glue the inner skin on the leg. No worries about the job, it will not be seen when assemble to the plane. Get ready to paint it.
paint the leg grey
here is the leg.
now the strut/damper/ actuator. Again, say goodbye as you will not see it. However, it is a structural part and needs adjustments. It will be removed when the leg is glued on and then inserted and attached to the leg.
Install the leg
and wheels are on.
Isaac