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Deltic in 4mm, By Accurascale

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Today Accurascale announces the launch of its first British outline locomotive in 4mm scale at the Warley 2018 exhibition at the NEC, Birmingham; the Class BR 55 ‘Deltic’ locomotive.

A total of 22 locomotives were built by English Electric at their Vulcan Foundry works between 1961 and 1962 to operate high speed express passenger workings on the East Coast Main Line between London Kings Cross and Edinburgh, a service they dominated until the introduction of the HST from 1978.


They continued working East Coast semi-fast passenger services and parcel workings as well as cross country trains until they were finally withdrawn between January 1980 and December 1981, with three retained for a much heralded ‘farewell special’ on January 2nd, 1982 which drew enthusiasts out in their thousands to witness the final services utilising Deltic power in BR service. This was supposed to be the end of these iconic locomotives on the mainline, but the quirks of railway privatisation and the efforts of preservationists such as the Deltic Preservation Society has seen these twin-engine beasts return to the mainline, on scheduled passenger, freight and railtour duties. 


The Deltic is Accurascale’s first locomotive and will be designed to the highest standards as seen in previous Accurascale releases. Accurascale were very kindly facilitated by the DPS at their facility in Barrow Hill, where D9009 Alycidon and D9015 Tulyar were extensively surveyed in Spring 2018. CAD design work has been exhaustive in capturing the distinct shape of these complex locomotives and is now complete with several authorities on Deltics assisting in this process. Accurascale’s factory is due to begin tooling in the coming weeks ahead of a Q4 2019 release, with 17 different models initially offered across several liveries and guises, with further special editions to be announced.


Accurascale, in association with ESU and the DPS, has also conducted a whole new sound recording for the release, utilising 55019 ‘Royal Highland Fusilier’ on the Spa Valley Railway in August 2018 to ensure the best possible replication of the distinctive Deltic drone in 4mm scale. The locomotives will incorporate the very latest in ESU technology. Accurascale is also actively investigating offering EM and P4 wheelsets as an additional option for customers who model those respective scales. All locomotives will come with Shawplan nameplates and regimental crests included in the detailing packs where applicable.


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The models will also reflect the whole lifetime of the real locomotives to date, featuring detail differences from their introduction into BR service, in-service modifications as well as modifications during their return to the mainline. These include:

  • Differing headcode panel arrangements
  • Windscreen wiper arrangements
  • Multiple steam heat boiler port modifications
  • Introduction of ETS with correct placing of connections
  • Filling in of cabside windows
  • Sandbox Hatches variations
  • Cab air vents
  • Different placing of horns
  • Cast and fabricated bogies
  • Fully functional high intensity and wipac lights as seen in mainline runs in the privatisation era 

The technical specification of the locomotive will be industry leading, with

  • Separately applied metal detail parts, including grab handles, steps, wipers and more
  • Correct height mini-tension-lock couplers with correct height NEM socket as well as a fully detailed buffer beam
  • High Performance traction, to include;
    • Five-Pole motor with two flywheels
    • Metal Helical Gear box for maximum performance and slow speed running
    • Gearing arranged so locomotive can achieve a scale top speed of 100 mph
    • DCC ready with 21pin interface
  • Fully detailed Lighting Pack, including:
  • Directional lighting, DC and DCC
  • Marker lights can be turned off when train is coupled to loco
  • Separately switched cab lighting and illuminated, detailed driver’s console, auto off on movement
  • RP25-110 wheels OO wheels with provision for re-gauging to p4 and EM gauge
  • Two quality speakers with large sound capsules for best possible sound in DCC sound versions
  • Fully sprung metal buffers
  • Extra fine factory-fitted pipework
  • Minimum Radius 438mm (2nd Radius Set-track)



The locomotives for initial release by Accurascale are as follows:




Prices for the Deltic begin at £160 for the DCC Ready version and £250 for the digital sound fitted version and will be available to pre-order and purchase via the Accurascale website https://accurascale....class-55-deltic. Customers can pay in full for their locomotives or pay a £30 deposit per locomotive and pay by instalments between now and delivery should they wish to make payment more manageable. The deposit scheme can be availed of by if they select ‘Bank Deposit’ at the payment stage on the Accurascale website.


Accurascale would like to extend its sincere thanks to the Deltic Preservation Society, Brian Hanson, The Spa Valley Railway and ESU for their invaluable assistance in this project.

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3 minutes ago, Horsetan said:

Ambitious. Going to out-Bachmann Bachmann?

Any chance of a DP1 and DP2?

Good to see more use of crossed-helical low-resistance gearboxes if that's what you're doing.

It is indeed horsetan, we're using the same chassis technology as the A Class.

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27 minutes ago, enniscorthyman said:

I think I might be tempted to get one at some stage.

Ditto. I'm getting rid of my British outline stock, but one of these Deltics in green might do nicely hauling a single rake of coaches that I might retain (i.e. maroon BR ex-LMS or ex-GWR coaching stock).

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Richard of Everard Junction fame posted a video of his trip to Warley including footage of AS new Deltic on their stand. (clip below should start 13m in)


Edited by Noel
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8 hours ago, DJ Dangerous said:

Are the preserved versions only being sold by DPS etc, or also by Accurascale?

Glad you like the sounds! Still have that Napier drone ringing in our ears after the recording session.

The Rails/NRM and Rails/DPS special editions are available exclusively from those outlets. 

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20 hours ago, Garfield said:

Glad you like the sounds! Still have that Napier drone ringing in our ears after the recording session.

The Rails/NRM and Rails/DPS special editions are available exclusively from those outlets. 


I think that I will have to have one of those when they hit the shelves.

Just gorgeous in every way.

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