It doesn't appear that Bachmann has the Large Scale Heisler technical drawings available at https://www.bachmanntrains.com/home-usa/references.php
I've scanned these pages from a #81799 Unpainted Unlettered Large Scale Heisler and can provide these pages to forum members as either a set of JPG images or a single PDF.
If Bachmann would like a copy of the PDF to add to their technical library for owners to have access to, I can provide upon request.
I've scanned these pages from a #81799 Unpainted Unlettered Large Scale Heisler and can provide these pages to forum members as either a set of JPG images or a single PDF.
If Bachmann would like a copy of the PDF to add to their technical library for owners to have access to, I can provide upon request.