VR T class (1st ser.) by BRM

Items used:

ESU 58429 LokSound 5 DCC 21-MTC decoder

Premium DCCSound speaker for BRM T class

Disassembly

1) Remove the small coupler chain/pin from the coupler box at each end of the model

2) Remove the four body mount screws and coupler assemblies from the underside 3) Gently wiggle the body up and off from the chassis

Chassis modification

To house the speaker, a small section of the chassis is removed. A Dremel tool with a # 409 cutoff wheel works well. Be sure to wear appropriate PPE.

Remove the 21 pin socket/board and main motherboard underneath it. Refit the small screw so as not to lose it.

3 cut lines are marked on the chassis and made:

1. Vertical cut on RHS

2. Horizontal cut near cut # 1

3. Small vertical cut underneath wires. This should be done about 1mm away from the small screw hole that locates the motherboard. The screw hole must be retained on the chassis. There should be about 18.5 mm between the two vertical cuts.

When making the cut under the wires, ensure the wires are not cut into. Disconnecting the model's main motherboard enables the wires to be moved further away from the cutting area.

Refit the motherboard, fixed with the small screw.

Next, place some Kapton tape over the motherboard (on the decoder side). This is good practice to prevent any possible short between the Auscision motherboard and the decoder.

Then place the speaker into position, screw the motherboard to the chassis with the small screw and then plug the decoder in.

Test operation, check no wires are in the way of the driveshaft or body as it is refitted, then reassemble the body back on to chassis along with body screws and couplers.