Please Note: At present, we are only able to source suitable motors with 5mm shafts. This means that you will have to remove the redundant bronze bushing, whereas previously it was optional.
A brand new OO Gauge Hornby ringfield motor conversion kit for most Bo-Bo models, comprising:
- a replacement high torque can motor,
- computer-designed 3D-printed adaptor,
- 2 x gears (one spare),
- a motor insulator,
- retainer clips, and
- 2 x lengths of heat shrink tubing.
This kit currently uses a D/V 9.0 motor with internal components designed for up to 14Vdc. Comprehensive testing confirms that it performs reliably without voltage dropping, so no diodes are required for either DC or DCC usage, and CV5/CV6 programming is optional (depending on your preferred running characteristics).
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
Need for speed?
This motor kit is suitable for 12 volt usage and whilst it’s the best option for most situations, it will run a little slower than our 6 volt motor kits. Those seeking the fastest possible speeds for HST sets etc. may still prefer our 6V upgrade kit with a diode voltage dropper.
Our HA6 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.
- 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.
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.