Sure,

The HEng Long Sherman will come with wheels attached to the sprockets. Use those as the shaft and build the scale sprockets around them. The idler will have to be scratch built but that would be easy...sorta.

What ever material you are making them from you draw your circle, then find the center and mark and drill your mounting hole. Since this is a slow moving tank you might get away with a counter sunk machine screw, with a washer on the back as a bearing. Now cut it out close to the line. Then finish your wheel by making a shaft. Attach the wheel to the shaft and chuck it up in your drill. Putthe drill in a vice and use sandpaperto bring the wheel to final shape.

Don