I have started on the motor bogie sideframe modifications to suit the Replica Railways motorised chassis. Because there is a 1mm difference between the motor bogie wheelbase on the chassis compared to the kit sideframes (accurately modelled), I have removed approximately 0.5mm from the sideframes on either side of the central airbag and spring plank.

I file down the Replica blank sideframes to match the profile of the kit versions then glue the lot together with solvent. The Replica frames support the kit ones so there is no problem with weak joints.

Photo 1 shows the first one with the ends of the sideframes glued in place, lined up carefully to the correct axle centres. The centre section could then be trimmed carefully to fit neatly between the outer bits.

Photo 2 shows the first frame done and the second one in bits with the Replica frame behind partially filed down.