More info from Blue Star
We have updated our website with over 50 detail photos of the Hetzer Master/Prototype.
You asked about how much room inside the lower hull. On the website, we provide a tab with 2 CAD renderings for customers interested in RC conversion. The renderings have dimensions for the inner hull and height of drive sprocket center line. We hope you find it helpful.
We are also on Facebook and will be posting production updates there.