The suspension is some kind of variant of the Christie suspension I think, called the Hara system or something. Its a bell crank system pulling on horizontally mounted springs along the side of the hull.
Its only a bunch of tubes and rods so its amenable to cobbling together.
Here are the bits and pieces. The spring tubes are just brass tube and rod and you can see how the springs go in. The linkage on the rod is then connected to a bell crank which is located on top of the swing arms. These were a bit fiddly to make as its hard to hand craft multiple bits that are all identical. After much trial and error and scrapping of bits, I ended up with enough similar looking bell cranks.
You will notice a KV road wheel. I will get back to that.
The swing arms were simply brass centre drilled discs connect together using a bit of silber steel for strength.
The bogies or whatever they are called were just steel filed to shap and then mounted on a hub made from brass and then attached to the lower end of the swing arm.
And this is what they looked like mounted. The suspension actually works quite well although at some point the springs will have to be fine tuned to get it to where I want it to be.
A simple shroud was then made out of brass sheet to cover the springtubes.
I neede the ability to adjust the tracks and make getting them on and off easier so I made a track tensioner. I have no idea what the system on the real tank was but I neede one and it wont be visible behind the idler. It was simply a crude but effective blind bolt in a housing with the idler axle riding along it.
P