Hornby Class 43 HST DCC decoder installation guide

This guide is designed to help you with the installation of an R8249 or TTS Sound decoder with Class 43 HST models.  Please note that your model may not be exactly the same as the model used in this guide, and it is representative only.

As with all modifications, these are carried out at the owners risk and we cannot accept any responsibility for any damage caused.

 


 

Step 1:
Carefully remove the body by gently pulling the body sides apart and then pulling the rear of the power car down. You can refer to your locomotive service sheet for further guidance.

Step 1

 

Step 2:
Locate the motor at the rear of the power car. It will have red and black wires going to it from both the front and rear of the chassis.

 

Step 2

 

Step 3:
Unsolder the red and black wires where they are connected to the motor and capacitor. Do not cut the wires any shorter as they will be needed when installing the decoder.

 

Step 3

 

Step 3

 

Step 4:
Remove the decoder from the protective packaging, taking care not to handle the PCB directly as this will cause irreparable damage due to static electricity.

It is important to protect the decoder by wrapping the PCB with insulating tape.  To prepare the decoder, remove the plug and separate the red, black, orange and grey wires.  The rest can but cut short and insulated.  Strip the red, black, orange and grey wires and lightly “tin” them with solder.  Tinning the wires will make the installation easier.

 

Step 4: Decoder preparation

 

Step 5:
Soldering in the chip is fairly straight-forward. Solder together the 2 black wires from the wheel pickups to the black wires from the decoder.

Similarly solder together the 2 red wires from the wheel pickups to the red wire from the decoder.  The orange and grey wires from the decoder are then simply soldered to the capacitor legs as shown.  The decoder can then be attached on to the lead weight using insulating tape.  It is recommended that all solder joints are wrapped with insulating tape.

 

Step 5

 

Step 6:
Once the decoder is secured, place the locomotive on the programming track and test to make sure that the installation has been successful.

Remember that the decoder has a default number of “3” and it is recommended that you code the locomotive to the number you require and test again.  Also test that the wires and decoder cannot become caught or trapped by the gears of the motor bogie during operation.

 

Step 6

 

Step 7:
Carefully replace the body onto the chassis taking care not to trap any wires during this procedure. Test once more to ensure that the installation has been totally successful.

 

Step 7

How do I convert my turntable to DCC?

Turntable wiring guide

There are some Hornby accessories that may function better under the control of the R8249 locomotive decoder instead of the accessory decoder.  These include the Hornby R070 turntable.  The use of a Locomotive decoder will allow for fine control of the motor speed in these accessories.

Modifying the turntable for DCC operation

Please note that modifying the below accessory requires use of a soldering iron and should only be carried out by an experienced modeller who is competent with making the required modifications.

Please note with any DCC conversion or other modification, this is only a guide and we cannot accept any responsibility for any damage caused.  As with all modifications, these are carried out at the owners risk.

 

Turntable contact removal
Turntable contact removal

For operation of the Turntable, the contacts at the end of each rail must be carefully removed.  If left in place they will cause a short-circuit.

    • Locate the brass contacts at the end of each rail on the rotating Turntable section.

 

  • Gently slide the contact out from under the rail.
  • Repeat this process for the end of each rail.

 

 

Wiring the turntable

Follow these steps to wire up the turntable:

  • Cut the plug off of the R8249 Locomotive Decoder and strip the RED, BLACK, ORANGE and GREY wires ready for soldering.
  • Cut the plugs off both the BROWN and BLACK wires that protrude from the base of the Turntable and strip them ready for soldering.
  • Solder the ORANGE wire from the decoder to the BROWN wire from the Turntable and wrap the join with insulating tape. Similarly, solder the GREY wire from the decoder to the BLACK wire from the Turntable and wrap the join with insulating tape.
  • It is necessary for the RED and BLACK wires from the decoder to be connected to the track. For ease of use it is recommended that the RED and BLACK wires from the decoder are connected to RED and BLACK wire from the track are joined together using an electrical terminal block.
  • Ensure that all remaining wires from the decoder are individually wrapped with insulating tape to prevent short circuits.

This wiring guide will help you.

 

Turntable wiring guide
Turntable wiring guide

 

Please note: You must ensure that any turnouts from the modified turntable are live in order for locomotives to operate.

 


 

Buy the R8249 decoder online

How to install the Hornby Elite & E-link driver for RailMaster (Windows XP-8)

Hornby eLink and Railmaster Combination Pack

Download the instruction manual

 


 

Find out all about how to install and operate your Railmaster DCC system with this downloadable guide.

With the increasing number of different versions of Windows operating systems and the substantially different ways they work, this guide has been written to provide step-by-step guide to show you how to install the Hornby Elite and eLink USB port drivers onto your PC.

This guide will hopefully show you every scenario and should serve as the definitive document for ensuring the correct installation of the Hornby Elite and eLink driver on your PC.
Buy this item online

 


 

Download the instruction manual

Hornby Railmaster Instruction Manual (English)

Hornby eLink and Railmaster Combination Pack

Download the instruction manual

 


 

Find out all about how to install and operate your Railmaster DCC system with this downloadable guide.  Includes information on the following areas;

  • Installing RailMaster
  • Setting up your Hornby DCC Controller
  • System Settings
  • Setting up Locomotives
  • Controlling Locomotives
  • Voice Control
  • Reading and Writing Locomotive CVs
  • Programming Accessory Decoders
  • Designing a Track Schematic
  • Double Heading Locomotives
  • Programming to Automate your Layout
  • Programmable Floating Keys
  • Clock
  • Command Line Options
  • Programming Commands & Functions
  • Upgrading and Activating the Software
  • Requesting Help and backing up data
  • Important Notes on Scale Speeds and Accurate Loco Control
  • Troubleshooting Guide

Please note, this manual gives reference to Railmaster Plus add-ons but these are not available as standard with the controller pack.  Unfortunately, we cannot offer any technical support on the Plus features.

 

Buy this item online

 


 

Download the instruction manual