I got a Lima Class 33 about 15 years ago, painted in IR orange. It was never a great runner and it is not prototypical. In October I decided to take the plunge and start my modifying and scratch building career with turning the 33 into a C class.
The first thing I did was to replace the Lima pancake motor with a Susomotor. It now runs better, but the chassis is not the best.
There is a long list of things I did to the 33 to get it as far as it is currently:
Remove moulded on detail, including grab rails, rood mouldings etc.
Fill in front three windows and make two instead
Fill driver side window and windows along body of class 33
Removed approximtely 1.5 cm from body and chassis (it is still over scale length)
Drop buffer beam (not yet completed)
Remove roof fan and replace with brass etched fan
Include some Studio Scale Models brass etched details
There is still lots to do. I am currently working on the radiator grills, but am a bit stuck as to how to pull it off. The plastic is quite thick so the brass grills will probably have to go on the outside. I am also unsure as to whether I should remove the plastic behind the grills?
The picture below shows the shortened class 33
I am happy with the roof fan. I used a bit of scrap brass from a kit to make the cowling. It was awkward to bend but it makes a nice effect I think
The SSM window frames really make it easy to shape the front windows. I used some plastic safe superglue to fix them to the milliput. I used a file to remove milliput after installing the frames rather than before so I would not remove too much.
The main tasks left are installing the radiator grills, rigging up the lights (SSM), doing something with the roof line at the front and installing the headlight, and painting, which is a long way off. I will also need to scratch build some detailing under the chassis and add as much weight as possible.