This is build of a Soviet U-19. This was a vehicle the Soviets proposed after some experiences with the concrete bunkersof the Mannerheim Line in Finland. The basic plan being to mount a 203 mm howitzer on the chassis of a KV. It got to the planning stage, drawings were produced and then it was realised that it just was not going to work.
The drawings for it (some) can be found o n the web and there are one or two model builds to be found.
I did my best to follow the availabel darwings but I also drew inspiration from some Russian modellers versions of the vehicle.
My starting point was a Taigen 1:16 KV lower hull and sprockets. I also purchased KV road wheels and tracks.
I dismantled the hull removing all the plastic. I was then left with the aluminium tub and torsion bar suspension. I covered over the suspension with a 2mm steel plate and used the plastic side walls as a template for cutting out the sidewalls from 2mm steel. I did this with chain drilling and a hacksaw. The edges were finished with draw filing.
I made a mount for some work drive motors using 2 mm steel again, brazed with brass and then the motors were mounted in that and fastened to the 2mm base plate.
I fashioned a mount for the rear axle and used #25 chains and sprockets to function as a drive mechanism. Then the rear transmission cover from the original hull was attached.
The original suspension was too weak for the weight (like the actual vehicle) and non adjustable so new clamps for the stationary edge were made from 5mm square steel stock that shortened the bar and allowed adjusting to stop it bottoming out.
The casemate started out as a sheet of 2mm steel and the hole in the middle was chain drilled out and filed to shape.
Four steel bars of appropriate length were then used to support the roof piece. The three remaining sides were then filled in with more steel sheet. For the entire model, solder was used as “glue”, silver when possible, normal lead solder for bigger pieces.
I will continue in a new post.