I do not quite remember all of the beginning so I'll give some pics w/a narrative . I decided to try to build (what I have seen thus far) what has not been done . so far it is a great success
the scaling of pics and design and pattern making , starts with a parts book and some general knowledge of compacity range as it's difficult to acquire data for these old machines . all motor scrapers have a basic shape and size according to bowl compacity . So I figured out the comparable machine in another bran such as a cat 637 to get the general dimensions . basically using the tire size to finesse the design
the patterns
the 5th wheel
the cut plates waiting to be welded
the next few pics are of the assembly . now scrapers are heavy so are these by design
the round at the goose neck is a 12000# front axle king pin
the bowl assembly
the goose neck
5th wheel and goose neck
some cab and sheet metal
grill
drive train HPI savage diffs anhime automation gear motors tried as a single speed great for loading but slow as **** for travel so playing with traxxas e-maxx 2 speed manual trans
running out off room
to be continued