Here is my scratch built 1:16 RC Hetzer although not perfect , I made this some time ago I just need to alter the gearing and spray her (once I get another compressor) , oh wobbely wheels sorted .This has working leaf spring suspension.
Oh as for Pz.III tracks the Hetzer tracks have a double guide horn , I used 1:25 Academy early Panther tracks . However Im making a RSO 01 with Pz.III tracks . These are not perfect but Im removing the single guide horn and gluing on a double one made from styrene.
Size comparison next to my Tamiya Kingtiger
And my first attempt at a Pz.III double guide horn track link for my styer RSO 01, still needs improving
Rivet counting done going to hang up my anorak