Welcome to the Strathpeffer Junction shop. UK shipping for OO Gauge ringfield adaptor kit orders is £2.99, irrespective of how many are purchased. We also ship to Ireland, mainland Europe, USA, Canada, Australia and New Zealand.

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Hornby Ringfield Replacement 6V CD Motor & Adaptor Kit (HA2/12MM/Bo-Bo)

£15.75

Only 1 left in stock

Description

A brand new OO Gauge Hornby ringfield motor conversion kit for most Bo-Bo models, comprising:

    • a replacement 12mm thick 6Vdc high torque can motor,
    • computer-designed 3D-printed adaptor,
    • 2 x 10-tooth gears (one spare),
    • a motor insulator,
    • retainer clips, and
    • a length of heat shrink tubing.

As with all of our Hornby kits, the conversion process can be fully reversible depending how you choose to install it, so the old ringfield (pancake) motor can be reinstalled at any time. The adaptor is also reusable, meaning the motor, adaptor and/or gear can be replaced with ease, if ever the need arises.

Read more about our ringfield adaptor kits here: www.strathpefferjunction.com/ringfieldadaptors

Compatibility

Our HA2 adaptor is designed for use with most Bo-Bo models. It should be compatible with a wide range of ringfield motor versions of the UK outline models, but we cannot guarantee compatibility with every model. The following list is provided for guidance – if there is any doubt, please contact us to discuss your requirements before placing an order.

Compatible with: 

    • Class 25
    • Class 26
    • Class 29
    • Class 33
    • Class 35
    • Class 42 (Warships)
    • Class 43 (HST)
    • Class 73
    • Class 86
    • Class 91
    • Advanced Passenger Train (APT)
    • Most Diesel Multiple Units (DMUs)

Not compatible with:

    • Hornby silver seal ringfield motors

Note: Hornby produced a wide range of ringfield models, some with subtle differences in design, and we have been unable to test every single variation in person. These lists are based on both physical testing of models and careful assessment of photographs for those we do not have access to. They are not exhaustive.

We have developed the adaptor to accommodate many of the different different casting details found on  ringfield models. However, very occasionally light filing of the adaptor or the bogie may be required to perfect the fit. Please refer to our detailed installation booklet for specific fitting instructions.

★ For our Hornby 10mm/Co-Co/Tender-Drive adaptors, please click here.

Product Video

Disclaimer

We can accept no liability or responsibility for any damage or injury occurring from the installation and use of our motor replacement kits. Installation requires modifications and the use of tools, some of which have the potential to damage you and/or you models, as well as other components and equipment. Users must not commence work unless they are confident that they have the skills and experience necessary to complete it successfully, and install these kits and undertake work to their models at their own risk.

Additional information

Weight 50 g

Usage Advice

1.  Our replacement motors are low-noise DC motors designed for CD/DVD drives. The output from a DCC decoder or a DC controller can exceed their voltage rating depending on how hard hard the loco is being worked. Whilst our own tests (and those of many others before us) show that these motors are capable of handling voltages higher than their rating, in order to avoid motor burn-out, prolong motor life and achieve prototypical speeds, we recommend:

    • For DC/Analogue use, speeds are kept low manually via the controller and a diode* voltage dropper should be considered in order to reduce voltage going to the motor (as outlined in the instructions);
    • For DCC use, speeds are kept low manually via the controller, decoders should have their CV5 value reduced (if available) and, particularly where CV5 adjustment is not available, a diode* voltage dropper should be considered in order to reduce voltage going to the motor (as outlined in the instructions).

2.  With all CD-style motor conversions, it is good practice to: i) maintain very high speeds for relatively short periods only, ii) keep running on steep inclines to a minimum, iii)  avoid coupled up with excessively long rakes of coaches/wagons, and iv) where less robust 10mm motors are fitted, resist the temptation to fit additional weight to the loco.

3.  It is recommended that locomotives fitted with our 3D printed adaptor kits are not run for more than an hour continuously; this is to prevent the motor temperature from exceeding the glass transition temperature of the plastic.

4. We recommend that locomotives fitted with can-style CD motors are:

    • Not run without a DCC decoder as ‘Locomotive 0’ on a DCC model railway layout (this is will lead to over-heating and rapidly ruin the motor), and
    • Not placed on the tracks whilst a high frequency track cleaner (such as the Gaugemaster HF-1/HF-2)  is in operation. There have been some reports that the frequency can damage the motors, although it is not something that we have tested.

Instructions

The following instruction manuals are available for this product:

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Instructions for Hornby Ringfield Motor Upgrade Kits (HA1, HA2 & HA6) 3.13 MB 717 downloads

Step-by-step instructions for our Hornby HA1, HA2 & HA6 ringfield motor upgrade...
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Hornby Replacement Motor Kits Troubleshooting Guidance (OO/HO Gauge) 241.96 KB 82 downloads

We have prepared a troubleshooting guide to address some of the rare, but potential...
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Ringfield Motor Upgrade Kit Label 1.65 MB 200 downloads

Product label. ...
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Ringfield Motor Upgrade Kit Product Leaflet & Advice 4.60 MB 202 downloads

Product overview and usage advice. Last revised: 24 March 2020. ...

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