that model exist in 1/72...( this is the easy way)
but if you want the hard and painful way...
at the german books i show in the pics you can find xxxcellent pics about that railgun.
actually im doing the late version of that in a kurze bruno
will upload pics of the actual advance
to start to work with a line drawing is to have a piece or section of well known dimension and thwen make calculus and adjust to a final dimensions as you want,
you can make a model with the linedrawings and with the help of a set of pics, escaner or digital camera, graphic filters and then make arrangements on images to fit the scale as you want.
this is the railgun you want? right...
you need the railtransport of a karl morser to make more easy the boogies work, because you will destroy all the pieces to adjust it to the design... i call this a deep surgery...
the book skoda heavy guns and german heavy 24 cms cannon from schiffer are BASIC to work on ancient railguns because shows all about mounting the gun, the guns, movements etc
i will make faster the progress on this to show it more early than xpected, i will finish this railgun on early february. then wil share the pics
Ups... at this moment I just discover i did more profiles of boogies for another member of the brunos railguns and then i just had the xtravagant idea to start another project more... 38 cms S.K.L. eisenbahngeschutze Langer Max, you must let flow the inspiration when arrives, so dont try to stop the ideas, because then will convert a knot your brain, simple enjoy the ideas and try to make thn reality...
enjoy scratching... its easy