J72 chassis conversion for DCC Part 2

As the weather was quite pleasant the mill table was degreased and the vice set-up. One set of chassis frames now milled

 

 

 An 8mm hole not 5mm as first mentioned drilled where the motor brushes contact the frame. This was necessary to isolate the motor brushes from the frames.

There is now ample room to fit the chip into its new pocket and even room for some packing, and I have just received notification that my replacement 3D printed muffs and gears or on there way via UPS, I’ll post how I get on with these when they are fitted.