Bachmann 39-800K

BR Mk1 BSO Brake Second Open 'Laboratory 10' BR RTC (Original)

Manufacturer catalogue image - please note that pre-release images may be CAD renders or CGI/AI images rather than photographs

Prototype Era
Era 8 (1983 to 1994) British Rail Sectorisation

Manufacturer description

The Bachmann Collectors Club is pleased to reveal that its next Limited Edition model is this BR Mk1 BSO Brake Second Open ‘Laboratory 10’ in BR RTC (Original) livery (39-800K). ‘Laboratory 10’ was converted from Mk1 BSO No. 9236 and was fitted with a generator and traction control equipment. This former brake vehicle was re-numbered RDB975428 and joined the Railway Technical Centre (RTC) fleet based at Derby in the early 1970s. The RTC undertook a wide range of testing from the investigation of age-old problems, such as rail adhesion, to the development of new trains, such as the High Speed Diesel Train (HSDT), which is also available from the Collectors Club (35-111K / 35-111KSF). Just 500 OO scale models have been produced, and each is supplied with a numbered certificate of authenticity. The RTC’s colourful red and blue livery is applied to the model superbly with fine printing and lining throughout.

MODEL FEATURES:
• Bachmann Branchline OO Scale
• Era 8
• Pristine BR RTC Blue & Red livery
• Running No. RDB 975428
• BR1 Bogies
• Roof Periscopes Removed
• End Steps Removed
• Accessory Pack
• NEM Coupling Pockets
• Close Coupling Mechanism
• Length 270mm (over couplings)

Service Manuals

Catalogue listing

Brand
Bachmann
Range
Branchline
Product Code
39-800K
RRP
£67.95
Release date
2026

Model details

Limited edition
Bachmann Collectors Club
Tooling date
2024
DCC status
DCC Not compatible
Livery
RTC Original Blue & Red
Finish
Pristine
Running number
RDB975428

Prototype information

Coach type
BR Mark 1
TOPS classification
(BSO) Brake Second Open

Supplier Links

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Bachmann Collectors Club presents a limited‑edition OO‑scale model of the British Rail Mk1 BSO Brake Second Open, known as “Laboratory 10”, in the original Railway Technical Centre (RTC) livery (manufacturer part number 39‑800K). Only 500 examples have been produced, each supplied with a numbered certificate of authenticity.

The prototype was converted from Mk1 BSO No 9236, fitted with a generator and traction‑control equipment, and renumbered RDB 975428 when it joined the RTC fleet at Derby in the early 1970s. The RTC carried out a wide range of tests, from rail‑adhesion studies to development work on new trains such as the High Speed Diesel Train.

The model is built to Bachmann Branchline specifications for the Era 8 period, featuring the BR1 bogies, a pristine blue and red RTC livery with fine printed lining, and a length of 270 mm over the couplings. Fitted accessories include NEM coupling pockets, a close‑coupling mechanism, and the removal of roof periscopes and end steps.

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