Last Updated: 29 June 2026

How to convert N Gauge Union Mills Class J38 to DCC

Buy Union Mills Class J38 DCC Conversion Service from £50.00

This guide covers the following models:

  • Union Mills Class J38 65932 in BR Black

Union Mills models follow a similar tender drive arrangement. It is usually possible to fit a small decoder inside the tender, however where this is not possible, the decoder can be hidden in the cab. It is technically possible to mill out some of the metal from the tender to create space, however this reduces weight and traction.

Union Mills Tender Drive Conversion

A small decoder can be fitted inside the tender without milling, for detailed instructions on how to do this, follow the Union Mills Class T9 guide.

Fit DCC to Union Mills Class J38